bq24780s和stm32通讯充电代码

以下是一个基本的BQ24780S和STM32通信充电的代码示例，仅供参考：

#include "stm32f4xx.h"
#include "stm32f4xx_i2c.h"

#define BQ24780S_ADDR 0x12 //BQ24780S的I2C地址

void I2C1_Init(void)
{
    I2C_InitTypeDef I2C_InitStructure;

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);

    GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_I2C1);
    GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_I2C1);

    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
    I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
    I2C_InitStructure.I2C_OwnAddress1 = 0x00;
    I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
    I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
    I2C_InitStructure.I2C_ClockSpeed = 100000;

    I2C_Init(I2C1, &I2C_InitStructure);
    I2C_Cmd(I2C1, ENABLE);
}

void BQ24780S_SetChargeCurrent(uint16_t current_mA)
{
    uint8_t data[2];

    data[0] = 0x02; //控制寄存器2
    data[1] = (current_mA >> 1) & 0xFF; //设置充电电流

    I2C_StartTransmission(I2C1, BQ24780S_ADDR, I2C_Direction_Transmitter);
    I2C_SendData(I2C1, data[0]);
    I2C_SendData(I2C1, data[1]);
    I2C_StopTransmission(I2C1);
}

void BQ24780S_SetChargeVoltage(uint16_t voltage_mV)
{
    uint8_t data[2];

    data[0] = 0x03; //控制寄存器3
    data[1] = (voltage_mV >> 4) & 0xFF; //设置充电电压

    I2C_StartTransmission(I2C1, BQ24780S_ADDR, I2C_Direction_Transmitter);
    I2C_SendData(I2C1, data[0]);
    I2C_SendData(I2C1, data[1]);
    I2C_StopTransmission(I2C1);
}

int main(void)
{
    I2C1_Init();

    BQ24780S_SetChargeCurrent(1000); //设置充电电流为1000mA
    BQ24780S_SetChargeVoltage(12000); //设置充电电压为12V

    while (1)
    {
        //其他代码
    }
}

需要注意的是，以上代码仅供参考，具体的实现需要根据BQ24780S的数据手册进行具体的调整和优化。同时，在实际应用中，应当注意在通讯时避免出现冲突和误操作，以确保充电管理的稳定和安全。