stm32 24c64 通信代码
时间: 2023-09-07 07:11:04 浏览: 36
以下是基于STM32 HAL库实现的STM32与24C64的I2C通信代码,可以供您参考:
```c
#include "stm32f1xx_hal.h"
#define EEPROM_ADDR 0xA0
I2C_HandleTypeDef hi2c1;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_I2C1_Init();
uint8_t data[] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
HAL_StatusTypeDef ret;
uint16_t mem_addr = 0x00;
ret = HAL_I2C_Mem_Write(&hi2c1, EEPROM_ADDR, mem_addr, I2C_MEMADD_SIZE_16BIT, data, sizeof(data), HAL_MAX_DELAY);
if (ret != HAL_OK)
{
// 写入失败处理
}
uint8_t read_data[8];
ret = HAL_I2C_Mem_Read(&hi2c1, EEPROM_ADDR, mem_addr, I2C_MEMADD_SIZE_16BIT, read_data, sizeof(read_data), HAL_MAX_DELAY);
if (ret != HAL_OK)
{
// 读取失败处理
}
while (1)
{
// 主循环
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
}
static void MX_I2C1_Init(void)
{
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
}
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
__HAL_RCC_GPIOB_CLK_ENABLE();
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6 | GPIO_PIN_7, GPIO_PIN_SET);
GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
void Error_Handler(void)
{
while (1)
{
}
}
```
在上述代码中,我们使用了STM32 HAL库中的I2C接口函数实现与24C64的通信。代码中包含了写入和读取两个操作,您可以根据自己的需要进行修改和使用。