写一个读写芯片hym8563时钟芯片的完整代码,用stm32f407最好使用hal库
时间: 2024-02-26 16:59:28 浏览: 20
以下是一个基于STM32F407芯片,使用HAL库进行读写HYM8563时钟芯片的完整代码示例:
```
#include "stm32f4xx_hal.h"
#include "stdio.h"
#define HYM8563_ADDRESS 0x51 // HYM8563 I2C地址
#define I2C_TIMEOUT 100 // I2C读写超时时间
I2C_HandleTypeDef hi2c1;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
void setTime(int hour, int minute, int second);
void readTime(int* hour, int* minute, int* second);
int main(void) {
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_I2C1_Init();
int hour = 0, minute = 0, second = 0;
setTime(0, 0, 0); // 初始化时间为0点0分0秒
while (1) {
readTime(&hour, &minute, &second); // 读取当前时间
printf("Current time: %d:%d:%d\r\n", hour, minute, second);
HAL_Delay(1000); // 每秒更新一次时间
}
}
void setTime(int hour, int minute, int second) {
uint8_t setTimeData[4] = {0};
setTimeData[0] = second;
setTimeData[1] = minute;
setTimeData[2] = hour;
HAL_I2C_Mem_Write(&hi2c1, HYM8563_ADDRESS, 0, I2C_MEMADD_SIZE_8BIT, setTimeData, 3, I2C_TIMEOUT);
}
void readTime(int* hour, int* minute, int* second) {
uint8_t readTimeData[3] = {0};
HAL_I2C_Mem_Read(&hi2c1, HYM8563_ADDRESS, 0, I2C_MEMADD_SIZE_8BIT, readTimeData, 3, I2C_TIMEOUT);
*second = readTimeData[0];
*minute = readTimeData[1];
*hour = readTimeData[2];
}
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_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 192;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
RCC_OscInitStruct.PLL.PLLQ = 4;
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_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != 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) {
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
void Error_Handler(void) {
__disable_irq();
while (1) {
}
}
```
该代码使用HAL库进行I2C通信,通过setTime函数设置时间,通过readTime函数读取时间。在main函数中,每秒更新一次时间并通过printf函数打印到串口上。在使用该代码时,需要先连接HYM8563时钟芯片到STM32F407的I2C总线上,并将I2C1的SCL引脚连接到PA9,SDA引脚连接到PA10上。