void AD7689_Read_Channel(uint8_t channel, uint16_t *data) { // 先将CS引脚置低,选中AD7689 GPIO_ResetBits(AD7689_CS_PORT, AD7689_CS_PIN); // 发送配置字节和通道字节 uint16_t config = 0x8000 | (channel << 12); // 配置字节 SPI_I2S_SendData(AD7689_SPI, config); }
时间: 2024-04-13 18:29:35 浏览: 126
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The code snippet you provided is part of a function that reads data from the AD7689 ADC using SPI communication. Here's the continuation of the code:
```c
void AD7689_Read_Channel(uint8_t channel, uint16_t *data)
{
// Set the CS pin low to select AD7689
GPIO_ResetBits(AD7689_CS_PORT, AD7689_CS_PIN);
// Send configuration byte and channel byte
uint16_t config = 0x8000 | (channel << 12); // Configuration byte
SPI_I2S_SendData(AD7689_SPI, config);
// Wait until SPI transmission is complete
while (SPI_I2S_GetFlagStatus(AD7689_SPI, SPI_I2S_FLAG_BSY) != RESET);
// Receive the data from the ADC
while (SPI_I2S_GetFlagStatus(AD7689_SPI, SPI_I2S_FLAG_RXNE) == RESET);
*data = SPI_I2S_ReceiveData(AD7689_SPI);
// Set the CS pin high to deselect AD7689
GPIO_SetBits(AD7689_CS_PORT, AD7689_CS_PIN);
}
```
In this code, after configuring the `config` variable with the appropriate configuration and channel information, `SPI_I2S_SendData` is used to initiate the SPI transmission. The code then waits until the transmission is complete using `SPI_I2S_GetFlagStatus`.
After that, the received data from the ADC is obtained using `SPI_I2S_ReceiveData` and stored in the `data` variable. Finally, the CS pin is set high to deselect the AD7689 ADC.
Please note that this code assumes you have already configured the SPI interface and GPIO pins for the AD7689 ADC. Additionally, error handling and additional functionality may need to be added based on your specific requirements.
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