#include "delay.h"
#include "ti_msp_dl_config.h"

void I2C_W_SCL(uint8_t BitValue) {
  DL_GPIO_writePinsVal(SOFT_I2C_PORT, SOFT_I2C_CLK_PIN, BitValue);
}

void I2C_W_SDA(uint8_t BitValue) {
  DL_GPIO_writePinsVal(SOFT_I2C_PORT, SOFT_I2C_SDA_PIN, BitValue);
}

// 读取时钟线数据
uint8_t I2C_R_SDA(void) {
  uint8_t BitValue;
  BitValue = DL_GPIO_readPins(SOFT_I2C_PORT, SOFT_I2C_SDA_PIN);

  return BitValue;
}

void I2C_Start(void) {
  I2C_W_SCL(1);
  I2C_W_SDA(1);
  I2C_W_SDA(0);
  I2C_W_SCL(0);
}

void I2C_Stop(void) {
  I2C_W_SDA(0);
  I2C_W_SCL(1);
  I2C_W_SDA(1);
}

void I2C_SendByte(uint8_t Byte) {
  uint8_t i;

  for (i = 0; i < 8; i++) {
    I2C_W_SDA(Byte & (0x80 >> i));
    I2C_W_SCL(1);
    I2C_W_SCL(0);
  }
}

uint8_t I2C_RecviveData(void) {
  uint8_t i, Byte = 0x00;
  I2C_W_SDA(1);
  for (i = 0; i < 8; i++) {
    I2C_W_SCL(1);
    if (I2C_R_SDA() == 1) {
      Byte |= (0x80 >> i);
    }
    I2C_W_SCL(0);
  }
  return Byte;
}

void I2C_SendAck(uint8_t AckBit) {

  I2C_W_SDA(AckBit);
  I2C_W_SCL(1);
  I2C_W_SCL(0);
}

uint8_t I2C_RecviveAck(void) {
  uint8_t AckBit;

  I2C_W_SDA(1);
  I2C_W_SCL(1);
  AckBit = I2C_R_SDA();
  I2C_W_SCL(0);

  return AckBit;
}