hoverboard-firmware-hack-fo.../Src/pcf8574.c

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2019-11-26 22:58:20 +00:00
/*
* pcf8574.c
*
* Created on: Dec 30, 2014
* Author: peter
*/
#include "pcf8574.h"
PCF8574_RESULT PCF8574_Init(PCF8574_HandleTypeDef* handle) {
handle->PCF_I2C_ADDRESS &= 0x07;
/*if (handle->i2c.State == HAL_I2C_STATE_RESET) {
handle->i2c.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
handle->i2c.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;
handle->i2c.Init.DutyCycle = I2C_DUTYCYCLE_2;
handle->i2c.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED;
handle->i2c.Init.OwnAddress1 = 0xFE;
if (HAL_I2C_Init(&handle->i2c) != HAL_OK) {
handle->errorCallback(PCF8574_ERROR);
return PCF8574_ERROR;
}
}*/
return PCF8574_OK;
}
PCF8574_RESULT PCF8574_DeInit(PCF8574_HandleTypeDef* handle) {
HAL_I2C_DeInit(&handle->i2c);
return PCF8574_OK;
}
PCF8574_RESULT PCF8574_Write(PCF8574_HandleTypeDef* handle, uint8_t val) {
if (HAL_I2C_Master_Transmit(&handle->i2c,
(handle->PCF_I2C_ADDRESS << 1) | PCF8574_I2C_ADDRESS_MASK, &val, 1,
handle->PCF_I2C_TIMEOUT) != HAL_OK) {
//handle->errorCallback(PCF8574_ERROR);
return PCF8574_ERROR;
}
/*if (HAL_I2C_Master_Transmit_DMA(&handle->i2c,
(handle->PCF_I2C_ADDRESS << 1) | PCF8574_I2C_ADDRESS_MASK, &val, 1) != HAL_OK) {
handle->errorCallback(PCF8574_ERROR);
//<return PCF8574_ERROR;
}*/
//HAL_I2C_Master_Transmit_DMA(&hi2c2, 0xA4, (uint8_t*)ai2cBuffer, 2);
return PCF8574_OK;
}
PCF8574_RESULT PCF8574_Read(PCF8574_HandleTypeDef* handle, uint8_t* val) {
if (HAL_I2C_Master_Receive(&handle->i2c,
(handle->PCF_I2C_ADDRESS << 1) | PCF8574_I2C_ADDRESS_MASK, val, 1,
handle->PCF_I2C_TIMEOUT) != HAL_OK) {
return PCF8574_ERROR;
}
return PCF8574_OK;
}