Amosense_Firmware/dipSwitch.c

#include "dipSwitch.h"

/*
 * ȸ�ε� ����:
 * ADD_1..ADD_5 = P8.1..P8.5
 * Pull-up to VCC5, DIP ON -> GND(LOW) => Active-Low
 */
#define DIP_PORT   P8
#define DIP_PM     PM8
#define DIP_MASK   (0x3Eu)   // b0011_1110 = P8.1~P8.5
#define DIP_SHIFT  (1u)      // P8.1�� bit0�� ������

void DipSwitch_Init(void)
{
    // �Է� ����: PM bit=1 => input
    DIP_PM |= DIP_MASK;
}

uint8_t DipSwitch_ReadAddr_0to31(void)
{
    uint8_t raw = (uint8_t)(DIP_PORT & DIP_MASK);

    // Active-Low�̹Ƿ� ���� ��, ����ũ ����
    uint8_t v = (uint8_t)((~raw) & DIP_MASK);

    // P8.1~P8.5 -> bit0~bit4
    v = (uint8_t)(v >> DIP_SHIFT);

    return (uint8_t)(v & 0x1Fu); // 0~31
}