#include <SoftwareSerial.h> // Pin10接HC05的TXD // Pin11接HC05的RXD SoftwareSerial BT(10, 11); char val; const int TrigPin = 2; const int EchoPin = 3; float cm; #define L LOW #define H HIGH int flag; void setup() {
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const int TrigPin = 2; const int EchoPin = 3; float cm; #define L LOW #define H HIGH int flag; void setup() { Serial.begin(9600); Serial.println("bluetooth is ready!"); BT.begin(9600); pinMode(TrigPin,OUTPUT);// pinMode(EchoPin,INPUT); } void loop() { if (Serial.available...
const int TrigPin = 2; const int EchoPin = 3; float cm; #define L LOW #define H HIGH int flag; void setup() { Serial.begin(9600); Serial.println("bluetooth is ready!"); BT.begin(9600); pinMode(TrigPin,OUTPUT);// pinMode(EchoPin,INPUT); } void loop() { if (Serial.available...