add softi2c , test failed

This commit is contained in:
2025-11-17 21:31:48 +08:00
parent 8acb95d566
commit 73733da6dd
6 changed files with 366 additions and 273 deletions

72
3rd/soft_i2c.c Normal file
View File

@@ -0,0 +1,72 @@
#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;
}