STM32F1與BQ4050的通訊源碼分享

ID:524634 · 發表于 2021-4-28 16:08

學習STM32的時候，應用STM32F1與BQ4050做通訊，經過各種調試，以及網上查找資料，IIC通訊等待應答的時間需要拉長，IIC通訊的調試，通過示波器查看波形真的很重要

單片機源程序如下:

#include "led.h"
#include "delay.h"
#include "sys.h"
#include "usart.h"
#include "myiic.h"
#include "key.h"
//#define BQ4050_REG_TEMP 0x08 //Temperature U2
//#define BQ4050_REG_VOLT 0x09 //Voltage U2#define BQ4050_REG_CURRENT 0x0A //CURRENT I2
//#define BQ4050_REG_RSOC 0x0D //RelativeStateOfCharge U1
//#define BQ4050_REG_FCC 0x10 //FullChargeCapacity U2
//#define BQ4050_REG_RTE 0x11 //run time to empty
//#define BQ4050_REG_TTE 0x12 //TimeToEmpty U2
//#define BQ4050_REG_TTF 0x13 //TimeToFull U2
//#define BQ4050_REG_RMC 0x0F ///* Remaining Capacity */
u8 DLHR_DATA[2] = {0x00};
u8 buff[4] = {0x00};
uint16_t Read_BQ4050(uint8_t Commond)
{
uint16_t data=0,data1=0;
u8 I2c_Address = 0x16;
//u8 Read_Commond = 0x09;
IIC_Start();
IIC_Send_Byte(I2c_Address);//write
IIC_Wait_Ack();
IIC_Send_Byte(Commond);//
IIC_Wait_Ack();
IIC_Start();
IIC_Send_Byte((I2c_Address)+1);//read
IIC_Wait_Ack();
data = IIC_Read_Byte(1);//STATUS[7:0]
data1 = IIC_Read_Byte(0);//PRESSURE[23:16]
IIC_Stop();
data=data|data1<<8;
return data;
}
int main(void)
{
u8 t=0;
u8 d=0;
uint16_t data1=0,data2=0;
delay_init(); //延時函數初始化
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);// 設置中斷優先級分組2
uart_init(9600); //串口初始化為9600
LED_Init(); //初始化與LED連接的硬件接口
KEY_Init();
IIC_Init();
while(1)
{
//data=Read_BQ4050(0x09)&0x7fff;
data1=Read_BQ4050(0x09);
data2=Read_BQ4050(0x0d);
delay_ms(300);
printf("val= %d\r\n",data1);
printf("Cap= %d\r\n",data2);
GPIO_ResetBits(GPIOA,GPIO_Pin_8);
}
}