Arduino通过串行端口传递多个参数

Question

For my project i have two servos and i need to set them to the right angle every time the program loops. In order do this i use a serial usb connection and send a number to set one of the servos. But for the second servo i need to pass two numbers in one message. I was thinking about a string "X,Y" that i could send and split it between the comma on the arduino, but it seems that i can only send numbers and only 1 number at that over the serial port? How would i go about doing this.

Serial.write("90,90");//does not work...

Answer 1

According to the documentation , a call such as Serial.write("90,90"); should work and will result in the given string being sent. There's no mention of the comma having some separate meaning.

You should probably check the return value.

Answer 2

You can do:

Serial.write(90);
Serial.write(90);

Or:

 byte buf[] = {90, 90};
 Serial.write(buf, sizeof buf);