Windows10
STM32CubeMX
Version 5.2.0
Keil5(MDK5)
Version 5.28.0.0
本例程主要讲解如何使用硬件IIC读写24C02
基础配置过程请参考 STM32CubeMx(Keil5)开发之路—配置第一个项目
根据原理图可知需要的配置的是IIC2
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
#define EE_TYPE 255 //类型
#define ADDR_24LCxx_Write 0xA0 //写指令IIC地址
#define ADDR_24LCxx_Read 0xA1 //读指令IIC地址
#define BufferSize 10 //读写大小(注意不要设置太大)
uint8_t WriteBuffer[BufferSize] = {0,1,2,3,4,5,6,7,8,9}; //需要写的数据在WriteBuffer当中
uint8_t ReadBuffer[BufferSize]; //读出来的数据放进ReadBuffer当中
int i = 0;
/* 调试打印 */
int fputc(int ch, FILE *f)
{
HAL_UART_Transmit(&huart1, (uint8_t *)&ch,1, 0xFFFF);
return ch;
}
/* USER CODE END 0 */
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USART1_UART_Init();
MX_I2C2_Init();
/* USER CODE BEGIN 2 */
/* 写数据 */
HAL_Delay(5);
if(HAL_I2C_Mem_Write(&hi2c2, ADDR_24LCxx_Write, 0, I2C_MEMADD_SIZE_8BIT,WriteBuffer,BufferSize, 0x10) != HAL_OK)
{
printf("Write fail!\n");
}
/* 读数据 */
HAL_Delay(5);
if(HAL_I2C_Mem_Read(&hi2c2, ADDR_24LCxx_Read, 0, I2C_MEMADD_SIZE_8BIT,ReadBuffer,BufferSize, 0x10) != HAL_OK)
{
printf("Read fail!\n");
}
/* 测试输出 */
for(i=0; i
STM32F103ze_IIC_24C02.rar
IIC在实际应用过程非常广泛,是嵌入式需了解的协议之一,所以一定要好好理解!
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