modify

1/owi.c

@@ -0,0 +1,596 @@
+#include "owi.h"
+/*
+ * Test 1: bit-period-only variant.
+ * This local override keeps the replacement self-contained in owi.c.
+ * TBIT and all timing macros in owi.h expand from this value at use time.
+ */
+#undef OWI_BIT_PERIOD_US
+#define OWI_BIT_PERIOD_US 2000u
+
+#include "delay.h"
+#include "r_cg_wdt.h"
+#include <string.h>
+#include <stdio.h>
+#include "uart.h"
+#include "r_cg_wdt.h"
+
+#ifndef OWI_STRONG_DRIVE_HIGH_US
+#define OWI_STRONG_DRIVE_HIGH_US   5u
+#endif
+
+/* 내부 상태 */
+static uint32_t bit_period_us = OWI_BIT_PERIOD_US;
+static uint8_t  g_owi_timeout_latched = 0;
+
+static uint16_t g_owi_last_timeout_byte_index = 0xFFFFu;
+static uint8_t  g_owi_last_timeout_bit_index  = 0xFFu;
+
+static uint16_t g_owi_current_read_byte_index = 0u;
+static uint8_t  g_owi_current_read_bit_index  = 0u;
+
+/* =========================================================
+ * GPIO helpers (P70 / HW Open-Drain)
+ * - LOW  : 출력 모드 + 0
+ * - HIGH : 입력(Hi-Z)로 release
+ * ========================================================= */
+void GPIO_Clear(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   &= (uint8_t)~OWI_PIN_MASK;
+    OWI_PORT_PM  &= (uint8_t)~OWI_PIN_MASK;
+}
+
+void GPIO_Input(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PM  |= (uint8_t)OWI_PIN_MASK;
+}
+
+int GPIO_Read(void)
+{
+    return (OWI_PORT_P & (uint8_t)OWI_PIN_MASK) ? 1 : 0;
+}
+
+static void OWI_Release(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PM  |= (uint8_t)OWI_PIN_MASK;
+}
+
+static void GPIO_StrongDriveHighKick(uint32_t kick_us)
+{
+    OWI_Release();
+
+    if (!GPIO_Read()) {
+        return;
+    }
+
+    OWI_PORT_POM &= (uint8_t)~OWI_PIN_MASK;
+    OWI_PORT_P  |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PM &= (uint8_t)~OWI_PIN_MASK;
+
+    delay_us(kick_us);
+
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_Release();
+}
+
+void GPIO_ForceHighKick(void)
+{
+    GPIO_StrongDriveHighKick(OWI_STRONG_DRIVE_HIGH_US);
+}
+
+static void OWI_DriveLow(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   &= (uint8_t)~OWI_PIN_MASK;
+    OWI_PORT_PM  &= (uint8_t)~OWI_PIN_MASK;
+}
+
+/* =========================================================
+ * Diagnostics
+ * ========================================================= */
+uint8_t OWI_HasTimeout(void)
+{
+    return g_owi_timeout_latched;
+}
+
+void OWI_ClearTimeout(void)
+{
+    g_owi_timeout_latched = 0;
+    g_owi_last_timeout_byte_index = 0xFFFFu;
+    g_owi_last_timeout_bit_index  = 0xFFu;
+}
+
+uint16_t OWI_GetLastTimeoutByteIndex(void)
+{
+    return g_owi_last_timeout_byte_index;
+}
+
+uint8_t OWI_GetLastTimeoutBitIndex(void)
+{
+    return g_owi_last_timeout_bit_index;
+}
+
+/* =========================================================
+ * OWI Init
+ * ========================================================= */
+void OWI_Init(uint32_t bit_time_us)
+{
+    bit_period_us = bit_time_us;
+    (void)bit_period_us;
+
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PU &= (uint8_t)~OWI_PIN_MASK;
+
+    OWI_ClearTimeout();
+    GPIO_Input();
+}
+
+/* =========================================================
+ * Start/Stop/Secure
+ * ========================================================= */
+void OWI_Start(void)
+{
+    GPIO_Clear();
+    delay_us(TSTART_HOLD);
+
+    GPIO_Input();
+    delay_us(TBIT);
+}
+
+void OWI_Stop(void)
+{
+    GPIO_Input();
+    delay_us(TSTOP_LOW);
+    delay_us(TIDLE);
+}
+
+static void OWI_StopWrite(void)
+{
+    OWI_Release();
+    delay_us(TSTOP_LOW);
+    delay_us(TIDLE);
+}
+
+static void OWI_StopRead(void)
+{
+    OWI_DriveLow();
+    delay_us(TSTOP_LOW);
+    OWI_Release();
+    delay_us(TIDLE);
+}
+
+static uint8_t OWI_WaitFirstBitStart(void)
+{
+    int timeout;
+
+    timeout = (int)(bit_period_us * 4u);
+
+    /* 첫 번째 HIGH->LOW 시작을 기다림 */
+    while (GPIO_Read() && timeout-- > 0) {
+        delay_us(1u);
+    }
+
+    if (timeout <= 0) {
+        if (!g_owi_timeout_latched) {
+            g_owi_timeout_latched = 1;
+            g_owi_last_timeout_byte_index = 0u;
+            g_owi_last_timeout_bit_index  = 0u;
+        }
+        return 0u;
+    }
+
+    return 1u;
+}
+
+static uint8_t OWI_WaitForFallingEdge(uint16_t byte_index, uint8_t bit_index)
+{
+    int timeout = (int)(bit_period_us * 4u);
+
+    while (GPIO_Read() && timeout-- > 0) {
+        delay_us(1u);
+    }
+
+    if (timeout <= 0) {
+        if (!g_owi_timeout_latched) {
+            g_owi_timeout_latched = 1;
+            g_owi_last_timeout_byte_index = byte_index;
+            g_owi_last_timeout_bit_index  = bit_index;
+        }
+        return 0u;
+    }
+
+    return 1u;
+}
+
+static uint8_t OWI_ReadByte_StreamSynced(uint16_t byte_index)
+{
+    uint8_t data = 0;
+    int b;
+
+    for (b = 7; b >= 0; b--) {
+        uint8_t bit_index = (uint8_t)(7 - b);
+        uint8_t bit;
+
+        g_owi_current_read_byte_index = byte_index;
+        g_owi_current_read_bit_index  = bit_index;
+
+        /* 슬롯 시작 후 중앙 샘플 */
+        delay_us(bit_period_us / 2u);
+        bit = GPIO_Read() ? 1u : 0u;
+        data |= (uint8_t)(bit << b);
+
+        /* 남은 반 슬롯 대기 */
+        delay_us(bit_period_us / 2u);
+    }
+
+    return data;
+}
+
+void OWI_SecureStop(void)
+{
+    int i;
+
+    GPIO_Clear();
+    delay_us(SECURE_HIGH);
+
+    for (i = 0; i < (int)SECURE_TOGGLE_COUNT; i++) {
+        GPIO_Input();
+        delay_us(SECURE_TOGGLE_HIGH);
+
+        GPIO_Clear();
+        delay_us(SECURE_TOGGLE_LOW);
+    }
+
+    GPIO_Input();
+    delay_us(SECURE_HIGH);
+
+    GPIO_Clear();
+    delay_us(TSTART_HOLD);
+    GPIO_Input();
+}
+
+/* =========================================================
+ * Bit/Byte IO
+ * ========================================================= */
+void OWI_WriteBit(int bit)
+{
+    uint32_t t_low  = bit ? (uint32_t)TLOW_1 : (uint32_t)TLOW_0;
+    uint32_t t_high = (uint32_t)TBIT - t_low;
+
+    /* HIGH 구간 */
+    OWI_Release();
+    delay_us(t_high);
+
+    /* LOW 구간 */
+    OWI_DriveLow();
+    delay_us(t_low);
+
+    /* 다음 슬롯 시작 전 반드시 release */
+    OWI_Release();
+}
+
+void OWI_WriteByte(uint8_t data)
+{
+    int i;
+    for (i = 7; i >= 0; i--) {
+        OWI_WriteBit((data >> i) & 0x01u);
+    }
+    GPIO_Input();
+}
+
+uint8_t OWI_ReadBit(void)
+{
+    int timeout;
+    int low_width = 0;
+
+    /* 1) 라인이 HIGH가 될 때까지 정리 */
+    timeout = (int)(bit_period_us * 2u);
+    while (!GPIO_Read() && timeout-- > 0) {
+        delay_us(1u);
+    }
+
+    if (timeout <= 0) {
+        if (!g_owi_timeout_latched) {
+            g_owi_timeout_latched = 1;
+            g_owi_last_timeout_byte_index = g_owi_current_read_byte_index;
+            g_owi_last_timeout_bit_index  = g_owi_current_read_bit_index;
+        }
+        return 0u;
+    }
+
+    /* 2) 다음 LOW 시작 대기 */
+    timeout = (int)(bit_period_us * 2u);
+    while (GPIO_Read() && timeout-- > 0) {
+        delay_us(1u);
+    }
+
+    if (timeout <= 0) {
+        if (!g_owi_timeout_latched) {
+            g_owi_timeout_latched = 1;
+            g_owi_last_timeout_byte_index = g_owi_current_read_byte_index;
+            g_owi_last_timeout_bit_index  = g_owi_current_read_bit_index;
+        }
+        return 0u;
+    }
+
+    /* 3) LOW가 유지되는 시간을 직접 측정 */
+    while (!GPIO_Read() && low_width < (int)(bit_period_us * 2u)) {
+        delay_us(1u);
+        low_width++;
+    }
+
+    /* 4) LOW 폭 기준으로 판정
+       - 짧으면 1
+       - 길면 0
+       threshold ~= TBIT/2
+    */
+    return (low_width < (int)(bit_period_us / 2u)) ? 1u : 0u;
+}
+
+uint8_t OWI_ReadByte(void)
+{
+    uint8_t data = 0;
+    int i;
+
+    for (i = 7; i >= 0; i--) {
+        g_owi_current_read_bit_index = (uint8_t)(7 - i);
+        data |= (uint8_t)(OWI_ReadBit() << i);
+        if (OWI_HasTimeout()) {
+            break;
+        }
+    }
+    return data;
+}
+
+/* =========================================================
+ * Debug Print
+ * ========================================================= */
+void OWI_T_ReadBytesAndPrint(int length)
+{
+    uint8_t buf[129];
+    int i;
+    char uart_buf[8];
+    char tmp_buf[8];
+    uint8_t va0, va1;
+
+    if (length > 129) length = 129;
+    if (length <= 0) return;
+
+    OWI_ClearTimeout();
+
+    for (i = 0; i < length; i++) {
+        R_WDT_Restart();
+        g_owi_current_read_byte_index = (uint16_t)i;
+        buf[i] = OWI_ReadByte();
+        if (OWI_HasTimeout()) {
+            i++;
+            break;
+        }
+    }
+
+    sprintf(uart_buf, "%02X ", buf[0]);
+    strcpy(tmp_buf, uart_buf);
+    HOST_PRINT(tmp_buf);
+
+    for (i = 1; i < length; i += 2) {
+        va0 = buf[i];
+        va1 = (uint8_t)((i + 1 < length) ? buf[i + 1] : 0u);
+
+        delay_us(200);
+        sprintf(uart_buf, "%02X%02X ", va0, va1);
+        strcpy(tmp_buf, uart_buf);
+        HOST_PRINT(tmp_buf);
+        delay_us(200);
+    }
+}
+
+/* =========================================================
+ * Raw helpers
+ * ========================================================= */
+static void owi_result_init(owi_io_result_t *r)
+{
+    if (!r) return;
+    memset(r, 0, sizeof(*r));
+    r->ok = 1;
+    r->timeout_byte_index = 0xFFFFu;
+    r->timeout_bit_index  = 0xFFu;
+}
+
+static void owi_result_latch_timeout(owi_io_result_t *r)
+{
+    if (!r) return;
+
+    if (OWI_HasTimeout()) {
+        r->ok = 0;
+        r->timeout = 1;
+        r->timeout_byte_index = OWI_GetLastTimeoutByteIndex();
+        r->timeout_bit_index  = OWI_GetLastTimeoutBitIndex();
+    }
+}
+
+void OWI_T_CommandModeRaw(const uint8_t *tx_data, uint8_t tx_len, uint8_t id, owi_io_result_t *r)
+{
+    int i;
+
+    owi_result_init(r);
+
+    //delay_us(200);
+    OWI_Init(OWI_BIT_PERIOD_US);
+    OWI_ClearTimeout();
+
+    R_WDT_Restart();
+    OWI_SecureStop();
+    R_WDT_Restart();
+    OWI_WriteByte((uint8_t)(id << 1));
+    R_WDT_Restart();
+
+    for (i = 0; i < (int)tx_len; i++) {
+        R_WDT_Restart();
+        OWI_WriteByte(tx_data[i]);
+        R_WDT_Restart();
+    }
+
+    OWI_Stop();
+    R_WDT_Restart();
+    owi_result_latch_timeout(r);
+}
+
+void OWI_CommandModeRaw(const uint8_t *tx_data, uint8_t tx_len, uint8_t id, owi_io_result_t *r)
+{
+    int i;
+
+    owi_result_init(r);
+    OWI_Init(OWI_BIT_PERIOD_US);
+    OWI_ClearTimeout();
+
+    R_WDT_Restart();
+    OWI_SecureStop();
+    R_WDT_Restart();
+    OWI_WriteByte((uint8_t)(id << 1));
+    R_WDT_Restart();
+
+    for (i = 0; i < (int)tx_len; i++) {
+        R_WDT_Restart();
+        OWI_WriteByte(tx_data[i]);
+        R_WDT_Restart();
+    }
+
+    OWI_Stop();
+    R_WDT_Restart();
+    owi_result_latch_timeout(r);
+}
+
+void OWI_ReadBytesRaw(int length, uint8_t id, owi_io_result_t *r)
+{
+    int i;
+    int max_len;
+    uint8_t is_long_read;
+
+    if (!r) return;
+
+    owi_result_init(r);
+    OWI_Init(OWI_BIT_PERIOD_US);
+
+    if (length <= 0) {
+        r->ok = 0;
+        return;
+    }
+
+    max_len = (int)OWI_IO_MAX_BYTES;
+    if (length > max_len) {
+        length = max_len;
+    }
+
+    r->read_len = (uint16_t)length;
+    OWI_ClearTimeout();
+
+    /* Only 119 keeps the established mid-stream sync. */
+    is_long_read = (length == 119) ? 1u : 0u;
+
+    R_WDT_Restart();
+    OWI_SecureStop();
+    OWI_WriteByte((uint8_t)((id << 1) | 1u));
+
+    /*
+     * For 129 bytes, wait for the first edge immediately after the read ID.
+     * The old 100us delay could enter an already-started first pulse.
+     * Preserve the established delay for every other read length.
+     */
+    if (length != 129) {
+        delay_us(100u);
+    }
+
+    R_WDT_Restart();
+    if (!OWI_WaitForFallingEdge(0u, 0u)) {
+        owi_result_latch_timeout(r);
+        OWI_StopRead();
+        return;
+    }
+
+    for (i = 0; i < length; i++) {
+        R_WDT_Restart();
+
+        /* Preserve the existing mid-stream sync for the 119-byte path only. */
+        if (is_long_read && i == (length - 50)) {
+            R_WDT_Restart();
+            if (!OWI_WaitForFallingEdge((uint16_t)i, 0u)) {
+                owi_result_latch_timeout(r);
+                break;
+            }
+        }
+
+        r->data[i] = OWI_ReadByte_StreamSynced((uint16_t)i);
+
+        if (OWI_HasTimeout()) {
+            owi_result_latch_timeout(r);
+            break;
+        }
+    }
+
+    OWI_StopRead();
+}
+
+void OWI_disable(void)
+{
+    HOST_PRINT("51\r\n");
+}
+
+void OWI_T_CommandMode(const uint8_t *tx_data, uint8_t tx_len, uint8_t id)
+{
+    owi_io_result_t r;
+    (void)r;
+
+    OWI_T_CommandModeRaw(tx_data, tx_len, id, &r);
+    HOST_PRINT("51\r\n");
+}
+
+void OWI_CommandMode(const uint8_t *tx_data, uint8_t tx_len, uint8_t id)
+{
+    owi_io_result_t r;
+    (void)r;
+
+    OWI_CommandModeRaw(tx_data, tx_len, id, &r);
+    HOST_PRINT("51\r\n");
+}
+
+void OWI_ReadBytesAndPrint(int length, uint8_t id)
+{
+    owi_io_result_t r;
+    char out[(2 * OWI_IO_MAX_BYTES) + 40];
+    int i;
+    uint16_t p = 0;
+
+    if (length <= 0) {
+        HOST_PRINT("Err:read_len_nonzero\r\n");
+        return;
+    }
+
+    OWI_ReadBytesRaw(length, id, &r);
+
+    if (r.read_len == 0) {
+        HOST_PRINT("Err:read_len_nonzero\r\n");
+        return;
+    }
+
+    for (i = 0; i < (int)r.read_len; i++) {
+        uint8_t b = r.data[i];
+        out[p++] = "0123456789ABCDEF"[b >> 4];
+        out[p++] = "0123456789ABCDEF"[b & 0x0F];
+    }
+
+    if (r.timeout) {
+        p += (uint16_t)sprintf(&out[p], " !TO(B%u b%u)",
+                               (unsigned)r.timeout_byte_index,
+                               (unsigned)r.timeout_bit_index);
+    }
+
+    out[p++] = '\r';
+    out[p++] = '\n';
+    out[p] = '\0';
+
+    HOST_PRINT(out);
+}

2/owi.c

@@ -0,0 +1,602 @@
+#include "owi.h"
+#include "delay.h"
+#include "r_cg_wdt.h"
+#include <string.h>
+#include <stdio.h>
+#include "uart.h"
+#include "r_cg_wdt.h"
+
+#ifndef OWI_STRONG_DRIVE_HIGH_US
+#define OWI_STRONG_DRIVE_HIGH_US   5u
+#endif
+
+/*
+ * Test 2 hardware time base
+ * -------------------------
+ * Project clock: fCLK = 32 MHz
+ * TAU0 channel 5: CK03 = fCLK / 32 = 1 MHz (one count per microsecond)
+ *
+ * Channel 5 and CK03 are otherwise unused by this project.  Only the CK03
+ * field of TPS0 is changed, so CK00 to CK02 remain untouched.
+ */
+#define OWI_TIMER_CHANNEL_MASK       0x0020u
+#define OWI_TIMER_CK03_DIV32         0x5000u
+#define OWI_TIMER_TMR_CK03_INTERVAL  0xC000u
+
+/* 내부 상태 */
+static uint32_t bit_period_us = OWI_BIT_PERIOD_US;
+static uint8_t  g_owi_timeout_latched = 0;
+
+static uint16_t g_owi_last_timeout_byte_index = 0xFFFFu;
+static uint8_t  g_owi_last_timeout_bit_index  = 0xFFu;
+
+static uint16_t g_owi_current_read_byte_index = 0u;
+static uint8_t  g_owi_current_read_bit_index  = 0u;
+static uint16_t g_owi_next_sample_tick = 0u;
+
+static void OWI_TimerStart1MHz(void)
+{
+    TAU0EN = 1U;
+    NOP();
+    NOP();
+    NOP();
+    NOP();
+
+    TT0 |= (uint16_t)OWI_TIMER_CHANNEL_MASK;
+    TMMK05 = 1U;
+    TMIF05 = 0U;
+    TOE0 &= (uint16_t)~OWI_TIMER_CHANNEL_MASK;
+
+    TPS0 = (uint16_t)((TPS0 & 0x0FFFu) | OWI_TIMER_CK03_DIV32);
+    TMR05 = OWI_TIMER_TMR_CK03_INTERVAL;
+    TDR05 = 0xFFFFu;
+    TS0 |= (uint16_t)OWI_TIMER_CHANNEL_MASK;
+}
+
+static void OWI_TimerStop(void)
+{
+    TT0 |= (uint16_t)OWI_TIMER_CHANNEL_MASK;
+    TMIF05 = 0U;
+}
+
+static uint16_t OWI_TimerNow(void)
+{
+    return (uint16_t)(0xFFFFu - TCR05);
+}
+
+static void OWI_TimerWaitUntil(uint16_t deadline)
+{
+    while ((int16_t)(uint16_t)(OWI_TimerNow() - deadline) < 0) {
+        NOP();
+    }
+}
+
+/* =========================================================
+ * GPIO helpers (P70 / HW Open-Drain)
+ * - LOW  : 출력 모드 + 0
+ * - HIGH : 입력(Hi-Z)로 release
+ * ========================================================= */
+void GPIO_Clear(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   &= (uint8_t)~OWI_PIN_MASK;
+    OWI_PORT_PM  &= (uint8_t)~OWI_PIN_MASK;
+}
+
+void GPIO_Input(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PM  |= (uint8_t)OWI_PIN_MASK;
+}
+
+int GPIO_Read(void)
+{
+    return (OWI_PORT_P & (uint8_t)OWI_PIN_MASK) ? 1 : 0;
+}
+
+static void OWI_Release(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PM  |= (uint8_t)OWI_PIN_MASK;
+}
+
+static void GPIO_StrongDriveHighKick(uint32_t kick_us)
+{
+    OWI_Release();
+
+    if (!GPIO_Read()) {
+        return;
+    }
+
+    OWI_PORT_POM &= (uint8_t)~OWI_PIN_MASK;
+    OWI_PORT_P  |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PM &= (uint8_t)~OWI_PIN_MASK;
+
+    delay_us(kick_us);
+
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_Release();
+}
+
+void GPIO_ForceHighKick(void)
+{
+    GPIO_StrongDriveHighKick(OWI_STRONG_DRIVE_HIGH_US);
+}
+
+static void OWI_DriveLow(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   &= (uint8_t)~OWI_PIN_MASK;
+    OWI_PORT_PM  &= (uint8_t)~OWI_PIN_MASK;
+}
+
+/* =========================================================
+ * Diagnostics
+ * ========================================================= */
+uint8_t OWI_HasTimeout(void)
+{
+    return g_owi_timeout_latched;
+}
+
+void OWI_ClearTimeout(void)
+{
+    g_owi_timeout_latched = 0;
+    g_owi_last_timeout_byte_index = 0xFFFFu;
+    g_owi_last_timeout_bit_index  = 0xFFu;
+}
+
+uint16_t OWI_GetLastTimeoutByteIndex(void)
+{
+    return g_owi_last_timeout_byte_index;
+}
+
+uint8_t OWI_GetLastTimeoutBitIndex(void)
+{
+    return g_owi_last_timeout_bit_index;
+}
+
+/* =========================================================
+ * OWI Init
+ * ========================================================= */
+void OWI_Init(uint32_t bit_time_us)
+{
+    bit_period_us = bit_time_us;
+    (void)bit_period_us;
+
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PU &= (uint8_t)~OWI_PIN_MASK;
+
+    OWI_ClearTimeout();
+    GPIO_Input();
+}
+
+/* =========================================================
+ * Start/Stop/Secure
+ * ========================================================= */
+void OWI_Start(void)
+{
+    GPIO_Clear();
+    delay_us(TSTART_HOLD);
+
+    GPIO_Input();
+    delay_us(TBIT);
+}
+
+void OWI_Stop(void)
+{
+    GPIO_Input();
+    delay_us(TSTOP_LOW);
+    delay_us(TIDLE);
+}
+
+static void OWI_StopWrite(void)
+{
+    OWI_Release();
+    delay_us(TSTOP_LOW);
+    delay_us(TIDLE);
+}
+
+static void OWI_StopRead(void)
+{
+    OWI_DriveLow();
+    delay_us(TSTOP_LOW);
+    OWI_Release();
+    delay_us(TIDLE);
+}
+
+static uint8_t OWI_WaitFirstBitStart(void)
+{
+    int timeout;
+
+    timeout = (int)(bit_period_us * 4u);
+
+    /* 첫 번째 HIGH->LOW 시작을 기다림 */
+    while (GPIO_Read() && timeout-- > 0) {
+        delay_us(1u);
+    }
+
+    if (timeout <= 0) {
+        if (!g_owi_timeout_latched) {
+            g_owi_timeout_latched = 1;
+            g_owi_last_timeout_byte_index = 0u;
+            g_owi_last_timeout_bit_index  = 0u;
+        }
+        return 0u;
+    }
+
+    return 1u;
+}
+
+static uint8_t OWI_ReadByte_StreamSynced(uint16_t byte_index)
+{
+    uint8_t data = 0;
+    int b;
+
+    for (b = 7; b >= 0; b--) {
+        uint8_t bit_index = (uint8_t)(7 - b);
+        uint8_t bit;
+
+        g_owi_current_read_byte_index = byte_index;
+        g_owi_current_read_bit_index  = bit_index;
+
+        /*
+         * The deadline is advanced from the R-bit end reference, never from
+         * the end of the previous CPU delay.  Per-byte processing time
+         * therefore cannot accumulate as sampling drift.
+         */
+        OWI_TimerWaitUntil(g_owi_next_sample_tick);
+        bit = GPIO_Read() ? 1u : 0u;
+        data |= (uint8_t)(bit << b);
+        g_owi_next_sample_tick =
+            (uint16_t)(g_owi_next_sample_tick + (uint16_t)bit_period_us);
+    }
+
+    return data;
+}
+
+void OWI_SecureStop(void)
+{
+    int i;
+
+    GPIO_Clear();
+    delay_us(SECURE_HIGH);
+
+    for (i = 0; i < (int)SECURE_TOGGLE_COUNT; i++) {
+        GPIO_Input();
+        delay_us(SECURE_TOGGLE_HIGH);
+
+        GPIO_Clear();
+        delay_us(SECURE_TOGGLE_LOW);
+    }
+
+    GPIO_Input();
+    delay_us(SECURE_HIGH);
+
+    GPIO_Clear();
+    delay_us(TSTART_HOLD);
+    GPIO_Input();
+}
+
+/* =========================================================
+ * Bit/Byte IO
+ * ========================================================= */
+void OWI_WriteBit(int bit)
+{
+    uint32_t t_low  = bit ? (uint32_t)TLOW_1 : (uint32_t)TLOW_0;
+    uint32_t t_high = (uint32_t)TBIT - t_low;
+
+    /* HIGH 구간 */
+    OWI_Release();
+    delay_us(t_high);
+
+    /* LOW 구간 */
+    OWI_DriveLow();
+    delay_us(t_low);
+
+    /* 다음 슬롯 시작 전 반드시 release */
+    OWI_Release();
+}
+
+void OWI_WriteByte(uint8_t data)
+{
+    int i;
+    for (i = 7; i >= 0; i--) {
+        OWI_WriteBit((data >> i) & 0x01u);
+    }
+    GPIO_Input();
+}
+
+uint8_t OWI_ReadBit(void)
+{
+    int timeout;
+    int low_width = 0;
+
+    /* 1) 라인이 HIGH가 될 때까지 정리 */
+    timeout = (int)(bit_period_us * 2u);
+    while (!GPIO_Read() && timeout-- > 0) {
+        delay_us(1u);
+    }
+
+    if (timeout <= 0) {
+        if (!g_owi_timeout_latched) {
+            g_owi_timeout_latched = 1;
+            g_owi_last_timeout_byte_index = g_owi_current_read_byte_index;
+            g_owi_last_timeout_bit_index  = g_owi_current_read_bit_index;
+        }
+        return 0u;
+    }
+
+    /* 2) 다음 LOW 시작 대기 */
+    timeout = (int)(bit_period_us * 2u);
+    while (GPIO_Read() && timeout-- > 0) {
+        delay_us(1u);
+    }
+
+    if (timeout <= 0) {
+        if (!g_owi_timeout_latched) {
+            g_owi_timeout_latched = 1;
+            g_owi_last_timeout_byte_index = g_owi_current_read_byte_index;
+            g_owi_last_timeout_bit_index  = g_owi_current_read_bit_index;
+        }
+        return 0u;
+    }
+
+    /* 3) LOW가 유지되는 시간을 직접 측정 */
+    while (!GPIO_Read() && low_width < (int)(bit_period_us * 2u)) {
+        delay_us(1u);
+        low_width++;
+    }
+
+    /* 4) LOW 폭 기준으로 판정
+       - 짧으면 1
+       - 길면 0
+       threshold ~= TBIT/2
+    */
+    return (low_width < (int)(bit_period_us / 2u)) ? 1u : 0u;
+}
+
+uint8_t OWI_ReadByte(void)
+{
+    uint8_t data = 0;
+    int i;
+
+    for (i = 7; i >= 0; i--) {
+        g_owi_current_read_bit_index = (uint8_t)(7 - i);
+        data |= (uint8_t)(OWI_ReadBit() << i);
+        if (OWI_HasTimeout()) {
+            break;
+        }
+    }
+    return data;
+}
+
+/* =========================================================
+ * Debug Print
+ * ========================================================= */
+void OWI_T_ReadBytesAndPrint(int length)
+{
+    uint8_t buf[129];
+    int i;
+    char uart_buf[8];
+    char tmp_buf[8];
+    uint8_t va0, va1;
+
+    if (length > 129) length = 129;
+    if (length <= 0) return;
+
+    OWI_ClearTimeout();
+
+    for (i = 0; i < length; i++) {
+        R_WDT_Restart();
+        g_owi_current_read_byte_index = (uint16_t)i;
+        buf[i] = OWI_ReadByte();
+        if (OWI_HasTimeout()) {
+            i++;
+            break;
+        }
+    }
+
+    sprintf(uart_buf, "%02X ", buf[0]);
+    strcpy(tmp_buf, uart_buf);
+    HOST_PRINT(tmp_buf);
+
+    for (i = 1; i < length; i += 2) {
+        va0 = buf[i];
+        va1 = (uint8_t)((i + 1 < length) ? buf[i + 1] : 0u);
+
+        delay_us(200);
+        sprintf(uart_buf, "%02X%02X ", va0, va1);
+        strcpy(tmp_buf, uart_buf);
+        HOST_PRINT(tmp_buf);
+        delay_us(200);
+    }
+}
+
+/* =========================================================
+ * Raw helpers
+ * ========================================================= */
+static void owi_result_init(owi_io_result_t *r)
+{
+    if (!r) return;
+    memset(r, 0, sizeof(*r));
+    r->ok = 1;
+    r->timeout_byte_index = 0xFFFFu;
+    r->timeout_bit_index  = 0xFFu;
+}
+
+static void owi_result_latch_timeout(owi_io_result_t *r)
+{
+    if (!r) return;
+
+    if (OWI_HasTimeout()) {
+        r->ok = 0;
+        r->timeout = 1;
+        r->timeout_byte_index = OWI_GetLastTimeoutByteIndex();
+        r->timeout_bit_index  = OWI_GetLastTimeoutBitIndex();
+    }
+}
+
+void OWI_T_CommandModeRaw(const uint8_t *tx_data, uint8_t tx_len, uint8_t id, owi_io_result_t *r)
+{
+    int i;
+
+    owi_result_init(r);
+
+    //delay_us(200);
+    OWI_Init(OWI_BIT_PERIOD_US);
+    OWI_ClearTimeout();
+
+    R_WDT_Restart();
+    OWI_SecureStop();
+    R_WDT_Restart();
+    OWI_WriteByte((uint8_t)(id << 1));
+    R_WDT_Restart();
+
+    for (i = 0; i < (int)tx_len; i++) {
+        R_WDT_Restart();
+        OWI_WriteByte(tx_data[i]);
+        R_WDT_Restart();
+    }
+
+    OWI_Stop();
+    R_WDT_Restart();
+    owi_result_latch_timeout(r);
+}
+
+void OWI_CommandModeRaw(const uint8_t *tx_data, uint8_t tx_len, uint8_t id, owi_io_result_t *r)
+{
+    int i;
+
+    owi_result_init(r);
+    OWI_Init(OWI_BIT_PERIOD_US);
+    OWI_ClearTimeout();
+
+    R_WDT_Restart();
+    OWI_SecureStop();
+    R_WDT_Restart();
+    OWI_WriteByte((uint8_t)(id << 1));
+    R_WDT_Restart();
+
+    for (i = 0; i < (int)tx_len; i++) {
+        R_WDT_Restart();
+        OWI_WriteByte(tx_data[i]);
+        R_WDT_Restart();
+    }
+
+    OWI_Stop();
+    R_WDT_Restart();
+    owi_result_latch_timeout(r);
+}
+
+void OWI_ReadBytesRaw(int length, uint8_t id, owi_io_result_t *r)
+{
+    int i;
+    int max_len;
+
+    if (!r) return;
+
+    owi_result_init(r);
+    OWI_Init(OWI_BIT_PERIOD_US);
+
+    if (length <= 0) {
+        r->ok = 0;
+        return;
+    }
+
+    max_len = (int)OWI_IO_MAX_BYTES;
+    if (length > max_len) {
+        length = max_len;
+    }
+
+    r->read_len = (uint16_t)length;
+    OWI_ClearTimeout();
+
+    R_WDT_Restart();
+    OWI_SecureStop();
+    OWI_TimerStart1MHz();
+    OWI_WriteByte((uint8_t)((id << 1) | 1u));
+
+    /*
+     * OWI_WriteByte() returns at the end of the R bit.  Every sample deadline
+     * is an absolute 1 MHz timer value derived from this one reference.
+     */
+    g_owi_next_sample_tick =
+        (uint16_t)(OWI_TimerNow() + (uint16_t)(bit_period_us / 2u));
+
+    for (i = 0; i < length; i++) {
+        R_WDT_Restart();
+
+        r->data[i] = OWI_ReadByte_StreamSynced((uint16_t)i);
+
+        if (OWI_HasTimeout()) {
+            owi_result_latch_timeout(r);
+            break;
+        }
+    }
+
+    OWI_TimerStop();
+    OWI_StopRead();
+}
+
+void OWI_disable(void)
+{
+    HOST_PRINT("51\r\n");
+}
+
+void OWI_T_CommandMode(const uint8_t *tx_data, uint8_t tx_len, uint8_t id)
+{
+    owi_io_result_t r;
+    (void)r;
+
+    OWI_T_CommandModeRaw(tx_data, tx_len, id, &r);
+    HOST_PRINT("51\r\n");
+}
+
+void OWI_CommandMode(const uint8_t *tx_data, uint8_t tx_len, uint8_t id)
+{
+    owi_io_result_t r;
+    (void)r;
+
+    OWI_CommandModeRaw(tx_data, tx_len, id, &r);
+    HOST_PRINT("51\r\n");
+}
+
+void OWI_ReadBytesAndPrint(int length, uint8_t id)
+{
+    owi_io_result_t r;
+    char out[(2 * OWI_IO_MAX_BYTES) + 40];
+    int i;
+    uint16_t p = 0;
+
+    if (length <= 0) {
+        HOST_PRINT("Err:read_len_nonzero\r\n");
+        return;
+    }
+
+    OWI_ReadBytesRaw(length, id, &r);
+
+    if (r.read_len == 0) {
+        HOST_PRINT("Err:read_len_nonzero\r\n");
+        return;
+    }
+
+    for (i = 0; i < (int)r.read_len; i++) {
+        uint8_t b = r.data[i];
+        out[p++] = "0123456789ABCDEF"[b >> 4];
+        out[p++] = "0123456789ABCDEF"[b & 0x0F];
+    }
+
+    if (r.timeout) {
+        p += (uint16_t)sprintf(&out[p], " !TO(B%u b%u)",
+                               (unsigned)r.timeout_byte_index,
+                               (unsigned)r.timeout_bit_index);
+    }
+
+    out[p++] = '\r';
+    out[p++] = '\n';
+    out[p] = '\0';
+
+    HOST_PRINT(out);
+}

3/owi.c

@@ -0,0 +1,666 @@
+#include "owi.h"
+#include "delay.h"
+#include "r_cg_wdt.h"
+#include <string.h>
+#include <stdio.h>
+#include "uart.h"
+#include "r_cg_wdt.h"
+
+#ifndef OWI_STRONG_DRIVE_HIGH_US
+#define OWI_STRONG_DRIVE_HIGH_US   5u
+#endif
+
+/*
+ * Test 3 hardware time base
+ * -------------------------
+ * Project clock: fCLK = 32 MHz
+ * TAU0 channel 5: CK03 = fCLK / 32 = 1 MHz (one count per microsecond)
+ *
+ * Channel 5 and CK03 are otherwise unused by this project.  Only the CK03
+ * field of TPS0 is changed, so CK00 to CK02 remain untouched.
+ */
+#define OWI_TIMER_CHANNEL_MASK       0x0020u
+#define OWI_TIMER_CK03_DIV32         0x5000u
+#define OWI_TIMER_TMR_CK03_INTERVAL  0xC000u
+
+/* 내부 상태 */
+static uint32_t bit_period_us = OWI_BIT_PERIOD_US;
+static uint8_t  g_owi_timeout_latched = 0;
+
+static uint16_t g_owi_last_timeout_byte_index = 0xFFFFu;
+static uint8_t  g_owi_last_timeout_bit_index  = 0xFFu;
+
+static uint16_t g_owi_current_read_byte_index = 0u;
+static uint8_t  g_owi_current_read_bit_index  = 0u;
+static uint16_t g_owi_next_bit_start_tick = 0u;
+
+static void OWI_TimerStart1MHz(void)
+{
+    TAU0EN = 1U;
+    NOP();
+    NOP();
+    NOP();
+    NOP();
+
+    TT0 |= (uint16_t)OWI_TIMER_CHANNEL_MASK;
+    TMMK05 = 1U;
+    TMIF05 = 0U;
+    TOE0 &= (uint16_t)~OWI_TIMER_CHANNEL_MASK;
+
+    TPS0 = (uint16_t)((TPS0 & 0x0FFFu) | OWI_TIMER_CK03_DIV32);
+    TMR05 = OWI_TIMER_TMR_CK03_INTERVAL;
+    TDR05 = 0xFFFFu;
+    TS0 |= (uint16_t)OWI_TIMER_CHANNEL_MASK;
+}
+
+static void OWI_TimerStop(void)
+{
+    TT0 |= (uint16_t)OWI_TIMER_CHANNEL_MASK;
+    TMIF05 = 0U;
+}
+
+static uint16_t OWI_TimerNow(void)
+{
+    return (uint16_t)(0xFFFFu - TCR05);
+}
+
+static uint8_t OWI_TimerDeadlineReached(uint16_t deadline)
+{
+    return ((int16_t)(uint16_t)(OWI_TimerNow() - deadline) >= 0) ? 1u : 0u;
+}
+
+static void OWI_TimerWaitUntil(uint16_t deadline)
+{
+    while (!OWI_TimerDeadlineReached(deadline)) {
+        NOP();
+    }
+}
+
+static void OWI_LatchReadTimeout(uint16_t byte_index, uint8_t bit_index)
+{
+    if (!g_owi_timeout_latched) {
+        g_owi_timeout_latched = 1u;
+        g_owi_last_timeout_byte_index = byte_index;
+        g_owi_last_timeout_bit_index = bit_index;
+    }
+}
+
+static uint8_t OWI_MeasureFallingEdge(uint16_t bit_start,
+                                      uint16_t byte_index,
+                                      uint8_t bit_index,
+                                      uint16_t *edge_tick)
+{
+    uint16_t bit_end =
+        (uint16_t)(bit_start + (uint16_t)bit_period_us);
+    uint16_t edge;
+
+    OWI_TimerWaitUntil(bit_start);
+
+    /*
+     * Each OWI bit starts HIGH.  First discard a possible LOW remainder at
+     * the exact boundary, then capture the next HIGH-to-LOW transition.
+     */
+    while (!GPIO_Read()) {
+        if (OWI_TimerDeadlineReached(bit_end)) {
+            OWI_LatchReadTimeout(byte_index, bit_index);
+            return 0u;
+        }
+    }
+
+    while (GPIO_Read()) {
+        if (OWI_TimerDeadlineReached(bit_end)) {
+            OWI_LatchReadTimeout(byte_index, bit_index);
+            return 0u;
+        }
+    }
+
+    edge = OWI_TimerNow();
+    if ((uint16_t)(edge - bit_start) >= (uint16_t)bit_period_us) {
+        OWI_LatchReadTimeout(byte_index, bit_index);
+        return 0u;
+    }
+
+    *edge_tick = edge;
+    return 1u;
+}
+
+/* =========================================================
+ * GPIO helpers (P70 / HW Open-Drain)
+ * - LOW  : 출력 모드 + 0
+ * - HIGH : 입력(Hi-Z)로 release
+ * ========================================================= */
+void GPIO_Clear(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   &= (uint8_t)~OWI_PIN_MASK;
+    OWI_PORT_PM  &= (uint8_t)~OWI_PIN_MASK;
+}
+
+void GPIO_Input(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PM  |= (uint8_t)OWI_PIN_MASK;
+}
+
+int GPIO_Read(void)
+{
+    return (OWI_PORT_P & (uint8_t)OWI_PIN_MASK) ? 1 : 0;
+}
+
+static void OWI_Release(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PM  |= (uint8_t)OWI_PIN_MASK;
+}
+
+static void GPIO_StrongDriveHighKick(uint32_t kick_us)
+{
+    OWI_Release();
+
+    if (!GPIO_Read()) {
+        return;
+    }
+
+    OWI_PORT_POM &= (uint8_t)~OWI_PIN_MASK;
+    OWI_PORT_P  |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PM &= (uint8_t)~OWI_PIN_MASK;
+
+    delay_us(kick_us);
+
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_Release();
+}
+
+void GPIO_ForceHighKick(void)
+{
+    GPIO_StrongDriveHighKick(OWI_STRONG_DRIVE_HIGH_US);
+}
+
+static void OWI_DriveLow(void)
+{
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_P   &= (uint8_t)~OWI_PIN_MASK;
+    OWI_PORT_PM  &= (uint8_t)~OWI_PIN_MASK;
+}
+
+/* =========================================================
+ * Diagnostics
+ * ========================================================= */
+uint8_t OWI_HasTimeout(void)
+{
+    return g_owi_timeout_latched;
+}
+
+void OWI_ClearTimeout(void)
+{
+    g_owi_timeout_latched = 0;
+    g_owi_last_timeout_byte_index = 0xFFFFu;
+    g_owi_last_timeout_bit_index  = 0xFFu;
+}
+
+uint16_t OWI_GetLastTimeoutByteIndex(void)
+{
+    return g_owi_last_timeout_byte_index;
+}
+
+uint8_t OWI_GetLastTimeoutBitIndex(void)
+{
+    return g_owi_last_timeout_bit_index;
+}
+
+/* =========================================================
+ * OWI Init
+ * ========================================================= */
+void OWI_Init(uint32_t bit_time_us)
+{
+    bit_period_us = bit_time_us;
+    (void)bit_period_us;
+
+    OWI_PORT_POM |= (uint8_t)OWI_PIN_MASK;
+    OWI_PORT_PU &= (uint8_t)~OWI_PIN_MASK;
+
+    OWI_ClearTimeout();
+    GPIO_Input();
+}
+
+/* =========================================================
+ * Start/Stop/Secure
+ * ========================================================= */
+void OWI_Start(void)
+{
+    GPIO_Clear();
+    delay_us(TSTART_HOLD);
+
+    GPIO_Input();
+    delay_us(TBIT);
+}
+
+void OWI_Stop(void)
+{
+    GPIO_Input();
+    delay_us(TSTOP_LOW);
+    delay_us(TIDLE);
+}
+
+static void OWI_StopWrite(void)
+{
+    OWI_Release();
+    delay_us(TSTOP_LOW);
+    delay_us(TIDLE);
+}
+
+static void OWI_StopRead(void)
+{
+    OWI_DriveLow();
+    delay_us(TSTOP_LOW);
+    OWI_Release();
+    delay_us(TIDLE);
+}
+
+static uint8_t OWI_WaitFirstBitStart(void)
+{
+    int timeout;
+
+    timeout = (int)(bit_period_us * 4u);
+
+    /* 첫 번째 HIGH->LOW 시작을 기다림 */
+    while (GPIO_Read() && timeout-- > 0) {
+        delay_us(1u);
+    }
+
+    if (timeout <= 0) {
+        if (!g_owi_timeout_latched) {
+            g_owi_timeout_latched = 1;
+            g_owi_last_timeout_byte_index = 0u;
+            g_owi_last_timeout_bit_index  = 0u;
+        }
+        return 0u;
+    }
+
+    return 1u;
+}
+
+static uint8_t OWI_ReadByte_StreamSynced(uint16_t byte_index)
+{
+    uint8_t data = 0;
+    int b;
+
+    for (b = 7; b >= 0; b--) {
+        uint8_t bit_index = (uint8_t)(7 - b);
+        uint8_t bit;
+        uint16_t edge_tick;
+        uint16_t edge_position;
+
+        g_owi_current_read_byte_index = byte_index;
+        g_owi_current_read_bit_index  = bit_index;
+
+        if (!OWI_MeasureFallingEdge(g_owi_next_bit_start_tick,
+                                    byte_index,
+                                    bit_index,
+                                    &edge_tick)) {
+            break;
+        }
+
+        edge_position =
+            (uint16_t)(edge_tick - g_owi_next_bit_start_tick);
+
+        /*
+         * OWI write timing is HIGH first and LOW second:
+         *   0: falling edge near TBIT/4
+         *   1: falling edge near 3*TBIT/4
+         */
+        bit = (edge_position < (uint16_t)(bit_period_us / 2u)) ? 0u : 1u;
+        data |= (uint8_t)(bit << b);
+        g_owi_next_bit_start_tick =
+            (uint16_t)(g_owi_next_bit_start_tick +
+                       (uint16_t)bit_period_us);
+    }
+
+    return data;
+}
+
+void OWI_SecureStop(void)
+{
+    int i;
+
+    GPIO_Clear();
+    delay_us(SECURE_HIGH);
+
+    for (i = 0; i < (int)SECURE_TOGGLE_COUNT; i++) {
+        GPIO_Input();
+        delay_us(SECURE_TOGGLE_HIGH);
+
+        GPIO_Clear();
+        delay_us(SECURE_TOGGLE_LOW);
+    }
+
+    GPIO_Input();
+    delay_us(SECURE_HIGH);
+
+    GPIO_Clear();
+    delay_us(TSTART_HOLD);
+    GPIO_Input();
+}
+
+/* =========================================================
+ * Bit/Byte IO
+ * ========================================================= */
+void OWI_WriteBit(int bit)
+{
+    uint32_t t_low  = bit ? (uint32_t)TLOW_1 : (uint32_t)TLOW_0;
+    uint32_t t_high = (uint32_t)TBIT - t_low;
+
+    /* HIGH 구간 */
+    OWI_Release();
+    delay_us(t_high);
+
+    /* LOW 구간 */
+    OWI_DriveLow();
+    delay_us(t_low);
+
+    /* 다음 슬롯 시작 전 반드시 release */
+    OWI_Release();
+}
+
+void OWI_WriteByte(uint8_t data)
+{
+    int i;
+    for (i = 7; i >= 0; i--) {
+        OWI_WriteBit((data >> i) & 0x01u);
+    }
+    GPIO_Input();
+}
+
+uint8_t OWI_ReadBit(void)
+{
+    int timeout;
+    int low_width = 0;
+
+    /* 1) 라인이 HIGH가 될 때까지 정리 */
+    timeout = (int)(bit_period_us * 2u);
+    while (!GPIO_Read() && timeout-- > 0) {
+        delay_us(1u);
+    }
+
+    if (timeout <= 0) {
+        if (!g_owi_timeout_latched) {
+            g_owi_timeout_latched = 1;
+            g_owi_last_timeout_byte_index = g_owi_current_read_byte_index;
+            g_owi_last_timeout_bit_index  = g_owi_current_read_bit_index;
+        }
+        return 0u;
+    }
+
+    /* 2) 다음 LOW 시작 대기 */
+    timeout = (int)(bit_period_us * 2u);
+    while (GPIO_Read() && timeout-- > 0) {
+        delay_us(1u);
+    }
+
+    if (timeout <= 0) {
+        if (!g_owi_timeout_latched) {
+            g_owi_timeout_latched = 1;
+            g_owi_last_timeout_byte_index = g_owi_current_read_byte_index;
+            g_owi_last_timeout_bit_index  = g_owi_current_read_bit_index;
+        }
+        return 0u;
+    }
+
+    /* 3) LOW가 유지되는 시간을 직접 측정 */
+    while (!GPIO_Read() && low_width < (int)(bit_period_us * 2u)) {
+        delay_us(1u);
+        low_width++;
+    }
+
+    /* 4) LOW 폭 기준으로 판정
+       - 짧으면 1
+       - 길면 0
+       threshold ~= TBIT/2
+    */
+    return (low_width < (int)(bit_period_us / 2u)) ? 1u : 0u;
+}
+
+uint8_t OWI_ReadByte(void)
+{
+    uint8_t data = 0;
+    int i;
+
+    for (i = 7; i >= 0; i--) {
+        g_owi_current_read_bit_index = (uint8_t)(7 - i);
+        data |= (uint8_t)(OWI_ReadBit() << i);
+        if (OWI_HasTimeout()) {
+            break;
+        }
+    }
+    return data;
+}
+
+/* =========================================================
+ * Debug Print
+ * ========================================================= */
+void OWI_T_ReadBytesAndPrint(int length)
+{
+    uint8_t buf[129];
+    int i;
+    char uart_buf[8];
+    char tmp_buf[8];
+    uint8_t va0, va1;
+
+    if (length > 129) length = 129;
+    if (length <= 0) return;
+
+    OWI_ClearTimeout();
+
+    for (i = 0; i < length; i++) {
+        R_WDT_Restart();
+        g_owi_current_read_byte_index = (uint16_t)i;
+        buf[i] = OWI_ReadByte();
+        if (OWI_HasTimeout()) {
+            i++;
+            break;
+        }
+    }
+
+    sprintf(uart_buf, "%02X ", buf[0]);
+    strcpy(tmp_buf, uart_buf);
+    HOST_PRINT(tmp_buf);
+
+    for (i = 1; i < length; i += 2) {
+        va0 = buf[i];
+        va1 = (uint8_t)((i + 1 < length) ? buf[i + 1] : 0u);
+
+        delay_us(200);
+        sprintf(uart_buf, "%02X%02X ", va0, va1);
+        strcpy(tmp_buf, uart_buf);
+        HOST_PRINT(tmp_buf);
+        delay_us(200);
+    }
+}
+
+/* =========================================================
+ * Raw helpers
+ * ========================================================= */
+static void owi_result_init(owi_io_result_t *r)
+{
+    if (!r) return;
+    memset(r, 0, sizeof(*r));
+    r->ok = 1;
+    r->timeout_byte_index = 0xFFFFu;
+    r->timeout_bit_index  = 0xFFu;
+}
+
+static void owi_result_latch_timeout(owi_io_result_t *r)
+{
+    if (!r) return;
+
+    if (OWI_HasTimeout()) {
+        r->ok = 0;
+        r->timeout = 1;
+        r->timeout_byte_index = OWI_GetLastTimeoutByteIndex();
+        r->timeout_bit_index  = OWI_GetLastTimeoutBitIndex();
+    }
+}
+
+void OWI_T_CommandModeRaw(const uint8_t *tx_data, uint8_t tx_len, uint8_t id, owi_io_result_t *r)
+{
+    int i;
+
+    owi_result_init(r);
+
+    //delay_us(200);
+    OWI_Init(OWI_BIT_PERIOD_US);
+    OWI_ClearTimeout();
+
+    R_WDT_Restart();
+    OWI_SecureStop();
+    R_WDT_Restart();
+    OWI_WriteByte((uint8_t)(id << 1));
+    R_WDT_Restart();
+
+    for (i = 0; i < (int)tx_len; i++) {
+        R_WDT_Restart();
+        OWI_WriteByte(tx_data[i]);
+        R_WDT_Restart();
+    }
+
+    OWI_Stop();
+    R_WDT_Restart();
+    owi_result_latch_timeout(r);
+}
+
+void OWI_CommandModeRaw(const uint8_t *tx_data, uint8_t tx_len, uint8_t id, owi_io_result_t *r)
+{
+    int i;
+
+    owi_result_init(r);
+    OWI_Init(OWI_BIT_PERIOD_US);
+    OWI_ClearTimeout();
+
+    R_WDT_Restart();
+    OWI_SecureStop();
+    R_WDT_Restart();
+    OWI_WriteByte((uint8_t)(id << 1));
+    R_WDT_Restart();
+
+    for (i = 0; i < (int)tx_len; i++) {
+        R_WDT_Restart();
+        OWI_WriteByte(tx_data[i]);
+        R_WDT_Restart();
+    }
+
+    OWI_Stop();
+    R_WDT_Restart();
+    owi_result_latch_timeout(r);
+}
+
+void OWI_ReadBytesRaw(int length, uint8_t id, owi_io_result_t *r)
+{
+    int i;
+    int max_len;
+
+    if (!r) return;
+
+    owi_result_init(r);
+    OWI_Init(OWI_BIT_PERIOD_US);
+
+    if (length <= 0) {
+        r->ok = 0;
+        return;
+    }
+
+    max_len = (int)OWI_IO_MAX_BYTES;
+    if (length > max_len) {
+        length = max_len;
+    }
+
+    r->read_len = (uint16_t)length;
+    OWI_ClearTimeout();
+
+    R_WDT_Restart();
+    OWI_SecureStop();
+    OWI_TimerStart1MHz();
+    OWI_WriteByte((uint8_t)((id << 1) | 1u));
+
+    /*
+     * OWI_WriteByte() returns at the end of the R bit.  Each bit slot and its
+     * falling-edge position are measured from this absolute reference.
+     */
+    g_owi_next_bit_start_tick = OWI_TimerNow();
+
+    for (i = 0; i < length; i++) {
+        R_WDT_Restart();
+
+        r->data[i] = OWI_ReadByte_StreamSynced((uint16_t)i);
+
+        if (OWI_HasTimeout()) {
+            owi_result_latch_timeout(r);
+            break;
+        }
+    }
+
+    OWI_TimerStop();
+    OWI_StopRead();
+}
+
+void OWI_disable(void)
+{
+    HOST_PRINT("51\r\n");
+}
+
+void OWI_T_CommandMode(const uint8_t *tx_data, uint8_t tx_len, uint8_t id)
+{
+    owi_io_result_t r;
+    (void)r;
+
+    OWI_T_CommandModeRaw(tx_data, tx_len, id, &r);
+    HOST_PRINT("51\r\n");
+}
+
+void OWI_CommandMode(const uint8_t *tx_data, uint8_t tx_len, uint8_t id)
+{
+    owi_io_result_t r;
+    (void)r;
+
+    OWI_CommandModeRaw(tx_data, tx_len, id, &r);
+    HOST_PRINT("51\r\n");
+}
+
+void OWI_ReadBytesAndPrint(int length, uint8_t id)
+{
+    owi_io_result_t r;
+    char out[(2 * OWI_IO_MAX_BYTES) + 40];
+    int i;
+    uint16_t p = 0;
+
+    if (length <= 0) {
+        HOST_PRINT("Err:read_len_nonzero\r\n");
+        return;
+    }
+
+    OWI_ReadBytesRaw(length, id, &r);
+
+    if (r.read_len == 0) {
+        HOST_PRINT("Err:read_len_nonzero\r\n");
+        return;
+    }
+
+    for (i = 0; i < (int)r.read_len; i++) {
+        uint8_t b = r.data[i];
+        out[p++] = "0123456789ABCDEF"[b >> 4];
+        out[p++] = "0123456789ABCDEF"[b & 0x0F];
+    }
+
+    if (r.timeout) {
+        p += (uint16_t)sprintf(&out[p], " !TO(B%u b%u)",
+                               (unsigned)r.timeout_byte_index,
+                               (unsigned)r.timeout_bit_index);
+    }
+
+    out[p++] = '\r';
+    out[p++] = '\n';
+    out[p] = '\0';
+
+    HOST_PRINT(out);
+}

QualityReport(multical,DefaultBuild).txt

@@ -1,7 +1,38 @@
 QualityReport
-2026년 5월 22일 금요일 오전 9:15:29
+2026년 7월 30일 목요일 오전 9:19:08
 
 ------ Start build(multical, DefaultBuild) ------
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\Bin\ccrl.exe r_main.c -cpu=S3 -o DefaultBuild\r_main.obj "-dev=C:\Program Files (x86)\Renesas Electronics\CS+\CC\Device\RL78\Devicefile\DR5F10PPJ.DVF" -g -g_line -I "..\..\Documents\카카오톡 받은 파일\IDH1.1\IDH1.1" -I ..\IDH1.1 -I . -c -msg_lang=english
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\Bin\ccrl.exe app_owi_service.c -cpu=S3 -o DefaultBuild\app_owi_service.obj "-dev=C:\Program Files (x86)\Renesas Electronics\CS+\CC\Device\RL78\Devicefile\DR5F10PPJ.DVF" -g -g_line -I "..\..\Documents\카카오톡 받은 파일\IDH1.1\IDH1.1" -I ..\IDH1.1 -I . -c -msg_lang=english
+W0511106:The folder "..\..\Documents\카카오톡 받은 파일\IDH1.1\IDH1.1" specified by the "-I" option is not found.
+W0511106:The folder "..\..\Documents\카카오톡 받은 파일\IDH1.1\IDH1.1" specified by the "-I" option is not found.
+W0511187:The evaluation period for the option "-Odefault" of CC-RL V1 has expired. It is implicitly changed to "-Olite". Please consider purchasing the product to continue using "-Odefault". By explicitly specifying "-Olite" or "-Onothing", this warning message disappears. 
+W0511187:The evaluation period for the option "-Odefault" of CC-RL V1 has expired. It is implicitly changed to "-Olite". Please consider purchasing the product to continue using "-Odefault". By explicitly specifying "-Olite" or "-Onothing", this warning message disappears. 
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(18):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(19):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(20):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(25):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(26):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(27):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(18):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(19):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(20):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(25):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(26):W0520301:Typedef name has already been declared (with same type)
+C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(27):W0520301:Typedef name has already been declared (with same type)
+i2c.h(8):W0520047:Incompatible redefinition of macro "RAM_BYTES" (declared at line 15 of "uart.h")
+r_main.c(692):W0520172:External/internal linkage conflict with previous declaration
+r_main.c(811):W0520177:Variable "dbg" was declared but never referenced
+r_main.c(1302):W0520177:Variable "dbg" was declared but never referenced
+r_main.c(1933):W0520177:Variable "total_us" was declared but never referenced
+r_main.c(1934):W0520177:Variable "idle_us" was declared but never referenced
+r_main.c(1936):W0520177:Variable "got_any" was declared but never referenced
+r_main.c(102):W0520177:Variable "s_end_pat" was declared but never referenced
+r_main.c(268):W0520177:Function "UART1_SendBytes_Safe" was declared but never referenced
+r_main.c(429):W0520177:Function "bridge_wait_until_end" was declared but never referenced
+r_main.c(770):W0520177:Function "connect_verify_reset" was declared but never referenced
+r_main.c(775):W0520177:Function "print_hex_line" was declared but never referenced
+r_main.c(1637):W0520177:Function "execute_owi_service_from_line" was declared but never referenced
 C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\Bin\ccrl.exe owi.c -cpu=S3 -o DefaultBuild\owi.obj "-dev=C:\Program Files (x86)\Renesas Electronics\CS+\CC\Device\RL78\Devicefile\DR5F10PPJ.DVF" -g -g_line -I "..\..\Documents\카카오톡 받은 파일\IDH1.1\IDH1.1" -I ..\IDH1.1 -I . -c -msg_lang=english
 W0511106:The folder "..\..\Documents\카카오톡 받은 파일\IDH1.1\IDH1.1" specified by the "-I" option is not found.
 W0511187:The evaluation period for the option "-Odefault" of CC-RL V1 has expired. It is implicitly changed to "-Olite". Please consider purchasing the product to continue using "-Odefault". By explicitly specifying "-Olite" or "-Onothing", this warning message disappears. 
@@ -12,15 +43,15 @@ C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(25
 C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(26):W0520301:Typedef name has already been declared (with same type)
 C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\inc\stdint.h(27):W0520301:Typedef name has already been declared (with same type)
 uart.h(15):W0520047:Incompatible redefinition of macro "RAM_BYTES" (declared at line 29 of "owi.h")
-owi.c(528):W0520549:Variable "r" is used before its value is set
 owi.c(537):W0520549:Variable "r" is used before its value is set
-owi.c(142):W0520177:Function "OWI_StopWrite" was declared but never referenced
-owi.c(157):W0520177:Function "OWI_WaitFirstBitStart" was declared but never referenced
+owi.c(546):W0520549:Variable "r" is used before its value is set
+owi.c(143):W0520177:Function "OWI_StopWrite" was declared but never referenced
+owi.c(158):W0520177:Function "OWI_WaitFirstBitStart" was declared but never referenced
 C:\Program Files (x86)\Renesas Electronics\CS+\CC\CC-RL\V1.15.00\Bin\rlink.exe -subcommand=DefaultBuild\multical.clnk
 W0561017:Paid license of CC-RL V1 is not found, and the evaluation period has expired. Please consider purchasing the product.
 W0561017:Paid license of CC-RL V1 is not found, and the evaluation period has expired. Please consider purchasing the product.
 Renesas Optimizing Linker Completed
------- Build ended(Error:0, Warning:15)(multical, DefaultBuild) ------
+------ Build ended(Error:0, Warning:44)(multical, DefaultBuild) ------
 
 --- CommandFile 1 ---
 DefaultBuild\multical.clnk :
@@ -75,8 +106,8 @@ DefaultBuild\multical.clnk :
 
 
 --- SHA1 hash value of output files ---
-C:\Users\temp\Desktop\new_fw\DefaultBuild\multical.abs: f5b7d3bfe164041f7c436f8167bef7cc17963bf9
-C:\Users\temp\Desktop\new_fw\DefaultBuild\multical.mot: 68fb124bcfd8d50a76d54bad4d688fa32526e99b
+C:\Users\temp\Desktop\new_fw\DefaultBuild\multical.abs: b7c6b666e469b31beca03f72cf76832a7a7fd1de
+C:\Users\temp\Desktop\new_fw\DefaultBuild\multical.mot: ea661bdc3d677102e44160d16233eb2c7f15ec1c
 
 
 --- System Information ---
@@ -87,7 +118,7 @@ C:\Users\temp\Desktop\new_fw\DefaultBuild\multical.mot: 68fb124bcfd8d50a76d54bad
 *.NET Framework Version
  Microsoft .NET Framework 4 [.NET 4.8 or later] (533325)
 *WebView2 Version
- 148.0.3967.70
+ 150.0.4078.105
 
 --- Application Information ---
 *Product Name
@@ -104,13 +135,13 @@ C:\Users\temp\Desktop\new_fw\DefaultBuild\multical.mot: 68fb124bcfd8d50a76d54bad
  C:\Program Files (x86)\Renesas Electronics\CS+\CC
 *Memory Usage
  *Private Working Set
-  366 MB
+  289 MB
  *Number of GDI Objects
-  2884
+  2840
  *Number of USER Objects
-  1851
+  1765
  *Opened Files
-  36 editors, 36 files, 254 KB
+  36 editors, 36 files, 256 KB
 
 --- Build Tool Plug-in Information ---
 RH850 Build tool CC-RH Plug-in

app_owi_service.c

@@ -4,6 +4,12 @@
 #include "r_cg_wdt.h"
 #include <string.h>
 
+#define OWI_VERIFIED_MAX_LEN       129u
+#define OWI_VERIFIED_127_ATTEMPTS    6u
+#define OWI_VERIFIED_129_ATTEMPTS    8u
+#define OWI_VERIFIED_FIRST_US     30000u
+#define OWI_VERIFIED_RETRY_US     10000u
+
 static app_owi_result_t app_owi_from_raw(const owi_io_result_t *io)
 {
     app_owi_result_t r;
@@ -29,9 +35,74 @@ static app_owi_result_t app_owi_from_raw(const owi_io_result_t *io)
     return r;
 }
 
+static uint8_t s_verified_long[OWI_VERIFIED_MAX_LEN];
+static uint8_t s_verified_long_len = 0u;
+
 static uint8_t is_long_owi_read(int length)
 {
-    return (length == 119 || length == 127) ? 1u : 0u;
+    return (length == 119) ? 1u : 0u;
+}
+
+static app_owi_result_t app_owi_read_verified_long(uint8_t id,
+                                                   uint8_t length,
+                                                   uint8_t max_attempts)
+{
+    static uint8_t samples[3][OWI_VERIFIED_MAX_LEN];
+    owi_io_result_t io;
+    uint8_t sample_count = 0u;
+    uint8_t attempt;
+    uint8_t sample;
+    uint8_t replace_index = 0u;
+
+    memset(&io, 0, sizeof(io));
+
+    for (attempt = 0u; attempt < max_attempts; attempt++) {
+        delay_us((attempt == 0u) ? OWI_VERIFIED_FIRST_US
+                                 : OWI_VERIFIED_RETRY_US);
+
+        R_WDT_Restart();
+        OWI_ReadBytesRaw((int)length, id, &io);
+        R_WDT_Restart();
+
+        if (!io.ok || io.timeout || io.read_len < length ||
+            io.data[0] != 0x26u) {
+            continue;
+        }
+
+        /* One fresh full read matching a previously verified value is enough. */
+        if (s_verified_long_len == length &&
+            memcmp(s_verified_long, io.data, length) == 0) {
+            return app_owi_from_raw(&io);
+        }
+
+        for (sample = 0u; sample < sample_count; sample++) {
+            if (memcmp(samples[sample], io.data, length) == 0) {
+                memcpy(s_verified_long, io.data, length);
+                s_verified_long_len = length;
+                return app_owi_from_raw(&io);
+            }
+        }
+
+        if (sample_count < 3u) {
+            memcpy(samples[sample_count], io.data, length);
+            sample_count++;
+        } else {
+            /* Keep recent distinct samples so a later stable pair can match. */
+            memcpy(samples[replace_index], io.data, length);
+            replace_index++;
+            if (replace_index >= 3u) {
+                replace_index = 0u;
+            }
+        }
+    }
+
+    /* Do not return a possibly corrupted long sample. */
+    memset(&io, 0, sizeof(io));
+    io.ok = 0u;
+    io.timeout = 1u;
+    io.timeout_byte_index = 0xFFFEu;
+    io.timeout_bit_index = 0xFEu;
+    return app_owi_from_raw(&io);
 }
 
 static uint8_t looks_bad_tail(const owi_io_result_t *io)
@@ -102,6 +173,16 @@ app_owi_result_t app_owi_read_basic(uint8_t id, int length)
 {
     owi_io_result_t io;
 
+    if (length == 127) {
+        return app_owi_read_verified_long(id, 127u,
+                                          OWI_VERIFIED_127_ATTEMPTS);
+    }
+
+    if (length == 129) {
+        return app_owi_read_verified_long(id, 129u,
+                                          OWI_VERIFIED_129_ATTEMPTS);
+    }
+
     R_WDT_Restart();
     OWI_ReadBytesRaw(length, id, &io);
     R_WDT_Restart();

owi.c

@@ -480,16 +480,22 @@ void OWI_ReadBytesRaw(int length, uint8_t id, owi_io_result_t *r)
     r->read_len = (uint16_t)length;
     OWI_ClearTimeout();
 
-    is_long_read = (length >= 119) ? 1u : 0u;
+    /* Only 119 keeps the established mid-stream sync. */
+    is_long_read = (length == 119) ? 1u : 0u;
 
     R_WDT_Restart();
     OWI_SecureStop();
     OWI_WriteByte((uint8_t)((id << 1) | 1u));
 
-    /* 기존 잘 되던 값 유지 */
-    delay_us(100u);
+    /*
+     * For 129 bytes, wait for the first edge immediately after the read ID.
+     * The old 100us delay could enter an already-started first pulse.
+     * Preserve the established delay for every other read length.
+     */
+    if (length != 129) {
+        delay_us(100u);
+    }
 
-    /* 첫 falling edge를 한 번 잡는다 */
     R_WDT_Restart();
     if (!OWI_WaitForFallingEdge(0u, 0u)) {
         owi_result_latch_timeout(r);
@@ -500,14 +506,14 @@ void OWI_ReadBytesRaw(int length, uint8_t id, owi_io_result_t *r)
     for (i = 0; i < length; i++) {
         R_WDT_Restart();
 
-        /* long read만 주기적 재동기화 */
+        /* Preserve the existing mid-stream sync for the 119-byte path only. */
         if (is_long_read && i == (length - 50)) {
-	    R_WDT_Restart();
-	    if (!OWI_WaitForFallingEdge((uint16_t)i, 0u)) {
-	        owi_result_latch_timeout(r);
-	        break;
-	    }
-	}
+            R_WDT_Restart();
+            if (!OWI_WaitForFallingEdge((uint16_t)i, 0u)) {
+                owi_result_latch_timeout(r);
+                break;
+            }
+        }
 
         r->data[i] = OWI_ReadByte_StreamSynced((uint16_t)i);
 

r_main.c

@@ -341,7 +341,7 @@ static unsigned char hex2byte(char h, char l)
 
 static uint8_t is_long_owi_read_len(uint8_t len)
 {
-    return (len == 119u || len == 127u);
+    return (len == 119u);
 }
 
 static app_owi_result_t do_stable_owi_read(uint8_t id, uint8_t read_len)
@@ -937,8 +937,7 @@ static int execute_connect_verify_sequence(CmdSource src, const app_job_t *job)
 
 static int execute_direct_read_sequence(CmdSource src, const app_job_t *job)
 {
-    app_owi_result_t r_write;
-    app_owi_result_t r_read;
+    app_owi_result_t r;
     uint8_t read_len = 0;
 
     if (!job) return 0;
@@ -983,21 +982,22 @@ static int execute_direct_read_sequence(CmdSource src, const app_job_t *job)
         return 0;
     }
 
-    r_write = app_owi_write_basic(0x28u, job->payload, 3);
-    if (!r_write.ok || r_write.timeout) {
+    r = app_owi_write_basic(0x28u, job->payload, 3);
+    if (!r.ok || r.timeout) {
         OUT_PRINT(src, "Fail\r\n");
         send_end_response(src);
         return 1;
     }
 
-    r_read = do_stable_owi_read(0x28u, read_len);
-    if (!r_read.ok || r_read.timeout || r_read.read_len < read_len) {
+    r = do_stable_owi_read(0x28u, read_len);
+
+    if (!r.ok || r.timeout || r.read_len < read_len) {
         OUT_PRINT(src, "Fail\r\n");
         send_end_response(src);
         return 1;
     }
 
-    print_owi_read_result(src, &r_read);
+    print_owi_read_result(src, &r);
     send_end_response(src);
     return 1;
 }
@@ -1422,32 +1422,12 @@ static int execute_shadow_write_copy_nvm_sequence(CmdSource src, const app_job_t
     return 1;
 }
 
-static int execute_owi_service_from_job(CmdSource src, const app_job_t *job)
+static int execute_basic_owi_job(CmdSource src, const app_job_t *job)
 {
     app_owi_result_t r;
 
     if (!job) return 0;
 
-    /* connect */
-    if (execute_connect_verify_sequence(src, job)) {
-        return 1;
-    }
-
-    /* nvm, shadow, outmem direct read */
-    if (execute_direct_read_sequence(src, job)) {
-        return 1;
-    }
-
-    /* write coefficient */
-    if (execute_write_coeff_sequence(src, job)) {
-        return 1;
-    }
-
-    /* shadow_write -> copy nvm */
-    if (execute_shadow_write_copy_nvm_sequence(src, job)) {
-        return 1;
-    }
-
     if (job->addr != g_fixed_addr) return 0;
 
     if (job->channel < 1 || job->channel > 20) {
@@ -1481,7 +1461,12 @@ static int execute_owi_service_from_job(CmdSource src, const app_job_t *job)
 
     if (job->type == APP_JOB_PROTO_OR) {
         r = app_owi_read_basic(job->id, (int)job->len);
-        print_owi_read_result(src, &r);
+        if ((job->len == 127u || job->len == 129u) &&
+            (!r.ok || r.timeout || r.read_len < job->len)) {
+            OUT_PRINT(src, "Fail\r\n");
+        } else {
+            print_owi_read_result(src, &r);
+        }
         send_end_response(src);
         return 1;
     }
@@ -1491,6 +1476,33 @@ static int execute_owi_service_from_job(CmdSource src, const app_job_t *job)
     return 1;
 }
 
+static int execute_owi_service_from_job(CmdSource src, const app_job_t *job)
+{
+    if (!job) return 0;
+
+    /* connect */
+    if (execute_connect_verify_sequence(src, job)) {
+        return 1;
+    }
+
+    /* nvm, shadow, outmem direct read */
+    if (execute_direct_read_sequence(src, job)) {
+        return 1;
+    }
+
+    /* write coefficient */
+    if (execute_write_coeff_sequence(src, job)) {
+        return 1;
+    }
+
+    /* shadow_write -> copy nvm */
+    if (execute_shadow_write_copy_nvm_sequence(src, job)) {
+        return 1;
+    }
+
+    return execute_basic_owi_job(src, job);
+}
+
 static void forward_line_rs485_and_bridge(const char *line)
 {
     static char txbuf[UART_RX_BUF_SIZE + 4];
@@ -1768,7 +1780,12 @@ static int execute_owi_service_from_line(CmdSource src, const char *line)
         }
 
         r = app_owi_read_basic(id, (int)byte_len);
-        print_owi_read_result(src, &r);
+        if ((byte_len == 127u || byte_len == 129u) &&
+            (!r.ok || r.timeout || r.read_len < byte_len)) {
+            OUT_PRINT(src, "Fail\r\n");
+        } else {
+            print_owi_read_result(src, &r);
+        }
         return 1;
     }
 
@@ -2297,4 +2314,4 @@ void R_MAIN_UserInit(void)
     g_fixed_addr = DipSwitch_ReadAddr_0to31();
     /* End user code. Do not edit comment generated here */
 
-}
+}

uart.c

@@ -56,7 +56,8 @@ void rs485_recover(void)
 
 /* UART1 송신용 내부 버퍼(스택 포인터 안전) */
 static uint8_t s_uart1_txbuf[1024];
-static uint8_t s_uart0_txbuf[270];
+/* 129 data bytes as HEX plus diagnostics/CRLF. */
+static uint8_t s_uart0_txbuf[320];
 static volatile uint16_t s_uart0_tx_len = 0;