写TLC1543的固定程序
时间: 2024-02-18 15:02:05 浏览: 20
TLC1543是一款12位串行ADC(模数转换器),可以通过SPI接口进行通信。以下是TLC1543的固定程序示例:
```c
#include <SPI.h>
const int CS_PIN = 10; // Chip Select pin
byte commandByte = B00001100; // Command byte for TLC1543
byte highByte = 0; // High byte received from TLC1543
byte lowByte = 0; // Low byte received from TLC1543
int analogValue = 0; // Converted analog value
void setup() {
pinMode(CS_PIN, OUTPUT);
Serial.begin(9600);
SPI.begin();
}
void loop() {
digitalWrite(CS_PIN, LOW); // Select TLC1543
highByte = SPI.transfer(commandByte); // Send command byte and receive high byte
lowByte = SPI.transfer(0); // Send dummy byte and receive low byte
digitalWrite(CS_PIN, HIGH); // Deselect TLC1543
analogValue = (highByte << 8) | lowByte; // Combine high and low bytes
Serial.println(analogValue); // Print converted analog value
delay(1000); // Wait for 1 second
}
```
在上述程序中,我们声明了一个常量`CS_PIN`,用于设置TLC1543的片选引脚。我们还声明了三个变量`commandByte`、`highByte`和`lowByte`,用于存储发送和接收的字节。我们在`setup()`函数中初始化了SPI接口,并设置了串行数据传输的参数。在`loop()`函数中,我们首先使能TLC1543,然后发送命令字节和一个虚拟字节,接收高字节和低字节,最后关闭TLC1543。我们将高字节和低字节组合成一个16位的模拟值,并将其打印到串口监视器中。最后,我们延迟1秒钟,以便下一次转换。