stm32f103vct6写一个ADS1118的驱动例程

以下是基于STM32F103VCT6的ADS1118动程序示例，使用HAL库进行SPI通信：

#includestm32f1xx_hal.h"

// ADS1118寄存器定义
#define ADS1118_REG_CONVERSION 0x00
#define ADS1118_REG_CONFIG 0x01

// ADS1118配置寄存器位定义
#define ADS1118_CFG_OS_SINGLE 0x8000
#define ADS1118_CFG_MUX_AIN0_AIN1 0x0000
#define ADS1118_CFG_PGA_4V096 0x0200
#define ADS1118_CFG_MODE_SINGLE 0x0100
#define ADS1118_CFG_DR_128SPS 0x0000

SPI_HandleTypeDef hspi;

// 初始化SPI通信
void ADS1118_Init() {
    hspi.Instance = SPI1;
    hspi.Init.Mode = SPI_MODE_MASTER;
    hspi.Init.Direction = SPI_DIRECTION_2LINES;
    hspi.Init.DataSize = SPI_DATASIZE_16BIT;
    hspi.Init.CLKPolarity = SPI_POLARITY_LOW;
    hspi.Init.CLKPhase = SPI_PHASE_1EDGE;
    hspi.Init.NSS = SPI_NSS_SOFT;
    hspi.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
    hspi.Init.FirstBit = SPI_FIRSTBIT_MSB;
    hspi.Init.TIMode = SPI_TIMODE_DISABLE;
    hspi.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
    hspi.Init.CRCPolynomial = 10;
    HAL_SPI_Init(&hspi);
}

// 向ADS1118写入配置寄存器
void ADS1118_WriteConfig(uint16_t config) {
    uint16_t txData[2];
    txData[0] = config;
    HAL_SPI_Transmit(&hspi, (uint8_t*)txData, 2, HAL_MAX_DELAY);
}

// 读取ADS1118的转换结果
int16_t ADS1118_ReadConversion() {
    uint16_t txData[2] = {ADS1118_REG_CONVERSION, 0x00};
    uint16_t rxData;
    HAL_SPI_TransmitReceive(&hspi, (uint8_t*)txData, (uint8_t*)&rxData, 2, HAL_MAX_DELAY);
    return rxData;
}

int main(void) {
    HAL_Init();
    SystemClock_Config();

    ADS1118_Init();  // 初始化ADS1118

    // 配置ADS1118
    uint16_t config = ADS1118_CFG_OS_SINGLE | ADS1118_CFG_MUX_AIN0_AIN1 |
                      ADS1118_CFG_PGA_4V096 | ADS1118_CFG_MODE_SINGLE |
                      ADS1118_CFG_DR_128SPS;
    ADS1118_WriteConfig(config);

    // 循环读取转换结果
    while (1) {
        int16_t result = ADS1118_ReadConversion();
        printf("Conversion result: %d\n", result);
        HAL_Delay(1000);  // 延时1秒
    }
}

请注意，上述示例假设您已经正确配置了STM32CubeMX和HAL库，并且已创建了一个SPI1外设。您可能需要根据您的具体硬件配置和需求进行适当的修改。

希望这个示例能够帮助您实现ADS1118的驱动程序！如有任何疑问，请随时提问。