keys_driver.c

#include "stm32f4xx_hal.h"
 
I2C_HandleTypeDef hi2c3;
 
static void _keys_config_i2c(void){
    hi2c3.Instance = I2C3;
    hi2c3.Init.ClockSpeed = 100000;
    hi2c3.Init.DutyCycle = I2C_DUTYCYCLE_2;
    hi2c3.Init.OwnAddress1 = 0;
    hi2c3.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
    hi2c3.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
    hi2c3.Init.OwnAddress2 = 0;
    hi2c3.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
    hi2c3.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
 
    HAL_I2C_Init(&hi2c3);
}
 
void keys_init(void){
 
    _keys_config_i2c();
    char *test = "test";
    int i;
 
    if(HAL_I2C_Master_Transmit(&hi2c3, 0x70, test, 4, 10000) == HAL_OK){
        uint8_t hh = 0;
    }
 
//  for(i=0x70; i<0x80; i++){
//      if(HAL_I2C_Master_Transmit(&hi2c3, i, &test, 4, 1000) == HAL_OK){
//          uint8_t hh = 0;
//          break;
//      }
//  }
 
}