XBEE无线串口接收问题求助
#include <LiquidCrystal.h>LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int val;
char buffer;
void setup() {
// put your setup code here, to run once:
lcd.begin(16,2);
Serial.begin(9600);
}
void loop() {
// put your main code here, to run repeatedly:
if(Serial.available()>0){
char buffer[]={0};
Serial.readBytes(buffer, 4);
Serial.print("buffer: ");
Serial.println(buffer);
val=atoi(buffer);
Serial.print("val: ");
Serial.println(val);
if(val<10){
lcd.setCursor(0,0);
lcd.print("Front obstacle");
}
if(val>10){
lcd.setCursor(0,0);
lcd.print(" ");
}
}
}
这是代码，读取到的数据是buffer，三位数以内的，控制LCD显示屏的显示，请问问题出在哪里？
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