[英]arduino esp32 bluetooth recieve a whole string
有没有像 Serial.readString Serial.readString()
一样使用 esp32 BluetoothSerial 库接收消息字符串的简洁方法。 这个想法是从智能手机发送消息,接收消息并从该消息更新变量,这将影响 Arduino 的功能。 我也可以将一个字节保存为例如 255 而不是 0xFF 吗?
#include "BluetoothSerial.h"
BluetoothSerial SerialBT;
uint8_t mode = 0;
int speedDelay = 50;
byte color1r, color1g, color1b, color2r, color2g, color2b = 0; // can I save this as a number from 0-255?
String readBTString() {
return ??? // recieve a string or char from SerialBT ??
}
// this checks if a new message is available and then updates the variables accordingly
bool checkBT() {
if(SerialBT.available()) {
char data[35];
// e.g. "1::0,255,67::255,43,87::30"
String str = readBTString();
str.toCharArray(data, 35);
// update variables from message including updating mode which then effects the loop function
sscanf(data, "%d::%d,%d,%d::%d,%d,%d::%d", &mode, &color1r, &color1g, &color1b, &color2r, &color2g, &color2b, &speedDelay);
return true;
}
else return false;
}
doSomething(byte r, byte g, byte b, int speedDelay) {
for (int i = 0; i<255; i++) {
// do something
delay(speedDelay);
if (checkBT()) break; // check if a message is available
}
}
doSomethingElse(byte r, byte g, byte b, int speedDelay) {
for (int i = 0; i<255; i++) {
// do something else
delay(speedDelay);
if (checkBT()) break;
}
}
void setup() {
SerialBT.begin("BTtest");
}
void loop() {
switch (mode) // different mode values do different things
{
case 0:
doSomething(color1r,color1g,color1b, speedDelay);
break;
case 1:
doSomethingElse(color1r,color1g,color1b, speedDelay);
break;
default:
doSomething(color1r,color1g,color1b, speedDelay);
break;
}
}
实际上, BluetoothSerial
似乎有一个readString
方法......我在 Platform.io 上,带有 esp32 + Arduino 框架配置,它可以正确编译......
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