stc15w4k32s4通过串口发送ADC采集数值代码
时间: 2023-08-06 22:04:14 浏览: 155
以下是stc15w4k32s4通过串口发送ADC采集数值的代码示例:
```c
#include <reg52.h>
#include <stdio.h>
sbit LED = P1^0;
void init_serial() {
TMOD = 0x20; // Use timer 1 for serial communication
TH1 = 0xFD; // Set baud rate to 9600 baud
SCON = 0x50; // Enable serial communication using 8-bit data and 1 stop bit
TR1 = 1; // Start timer 1
}
void init_adc() {
ADC_RES = 0; // Set ADC resolution to 10 bits
ADC_CONTR = 0xE0; // Enable ADC and set ADC clock frequency to Fosc/32
}
unsigned int read_adc(unsigned char channel) {
unsigned int result;
ADC_CONTR = ADC_POWER | ADC_SPEED | channel | ADC_START;
while (!(ADC_CONTR & ADC_FLAG));
ADC_CONTR &= ~ADC_FLAG;
result = ADC_RES;
result |= (ADC_RESL << 8);
return result;
}
void main() {
unsigned int adc_value;
char buffer[16];
init_serial();
init_adc();
while (1) {
adc_value = read_adc(0); // Read ADC value from channel 0
sprintf(buffer, "%u\r\n", adc_value);
printf(buffer); // Send ADC value through serial communication
if (adc_value > 512) {
LED = 1; // Turn on LED if ADC value is greater than 512
} else {
LED = 0; // Turn off LED if ADC value is less than or equal to 512
}
}
}
```
在上面的代码中,我们使用了 STC15W4K32S4 单片机的内置 ADC 模块来读取电压信号,并通过串口将 ADC 值发送出去。与之前的例子不同,我们在串口通信函数 `printf()` 中的缓冲区 `buffer` 中只存储了数字,而没有包含其他字符,这样可以使输出更简洁。同时,我们还需要在程序中调用 `init_serial()` 函数来初始化串口,以便于单片机与计算机之间进行通信。
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