这是我的第一篇文章,我知道这个主题可能非常简单或显而易见,但我不知道如何解决它。
我有一个来自 jyetech wiuch 的电容表,声称具有 8-N-1 串行输出,这是手册的链接。我只想用我的 Arduino Uno 读取输出,有人能帮帮我吗?这是我所做的代码,我得到了一些真实的数据,但也有一些奇怪的字符。
#include <stdio.h>
void setup() {
Serial.begin(38400);
Serial.println("OK");
}
char command[1024];
char commandBuffer[128];
int commandBufferSize = 0;
void readCommandBuffer(int bytesToRead) {
int i = 0;
char c = 0;
while (i < 128 && (i < bytesToRead || bytesToRead <= 0)) {
while (!Serial.available())
;
c = Serial.read();
if (c == '\r' || c == '\n') {
break;
}
commandBuffer[i] = c;
i++;
}
commandBufferSize = i;
}
void readCommand() {
command[0] = '\0';
readCommandBuffer(0);
if (strncmp(commandBuffer, "RCV", 3) == 0) {
commandBuffer[commandBufferSize] = '\0';
int expectedSize = atoi(commandBuffer + 4);
if (expectedSize <= 0 || expectedSize > 1024) {
return;
}
Serial.println("RDY");
int bytesRead = 0;
while (bytesRead < expectedSize) {
readCommandBuffer(expectedSize - bytesRead);
memcpy(command + bytesRead, commandBuffer, commandBufferSize);
bytesRead += commandBufferSize;
Serial.print("ACK ");
Serial.println(commandBufferSize);
}
command[bytesRead] = '\0';
} else {
memcpy(command, commandBuffer, commandBufferSize);
command[commandBufferSize] = '\0';
}
}
void loop() {
if (Serial.available()) {
readCommand();
// "command" now contains the full command
Serial.println(command);
}}