基于NUCLEO-U575ZI-Q开发板使用HAL库读取BQ27220电池状态信息
时间: 2023-09-17 16:12:53 浏览: 157
好的,针对您的问题,我可以为您提供如下参考代码:
``` c
#include "stm32u5xx_hal.h"
#include "stm32u5xx_nucleo_u575zi.h"
#define BQ27220_SLAVE_ADDRESS 0xAA
#define BQ27220_REG_CTRL 0x00
#define BQ27220_REG_TEMP 0x02
#define BQ27220_REG_VOLT 0x04
#define BQ27220_REG_FLAGS 0x06
#define BQ27220_REG_REM_CAP 0x08
#define BQ27220_REG_FULL_CAP 0x0A
#define BQ27220_REG_AVG_CURR 0x0C
#define BQ27220_REG_AVG_PWR 0x0E
#define BQ27220_REG_SOC 0x10
I2C_HandleTypeDef hi2c1;
void BQ27220_ReadData(uint8_t reg, uint8_t* data, uint16_t size) {
HAL_I2C_Mem_Read(&hi2c1, BQ27220_SLAVE_ADDRESS, reg, I2C_MEMADD_SIZE_8BIT, data, size, 1000);
}
uint16_t BQ27220_ReadWord(uint8_t reg) {
uint8_t buffer[2];
BQ27220_ReadData(reg, buffer, 2);
return ((uint16_t)buffer[1] << 8) | buffer[0];
}
void BQ27220_Init(void) {
uint8_t ctrl = 0x00;
HAL_I2C_Mem_Write(&hi2c1, BQ27220_SLAVE_ADDRESS, BQ27220_REG_CTRL, I2C_MEMADD_SIZE_8BIT, &ctrl, 1, 1000);
}
int main(void) {
HAL_Init();
BSP_I2C1_Init(400000);
BQ27220_Init();
uint16_t voltage = BQ27220_ReadWord(BQ27220_REG_VOLT);
uint16_t soc = BQ27220_ReadWord(BQ27220_REG_SOC);
while (1) {
// 这里可以添加你的代码
}
}
```
需要注意的是,以上代码仅供参考,具体实现可能需要根据您的实际情况进行修改。同时,您需要先在 CubeIDE 中配置好 I2C 接口,以便让开发板能够与电池进行通信。
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