xu min

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6 years, 2 months ago.

rawSerial inte rrupt

#include "mbed.h"
 
DigitalOut led1(LED1);
DigitalOut led2(LED2);
 
RawSerial pc(USBTX, USBRX);
 
void callback_ex() {
	// Note: you need to actually read from the serial to clear the RX interrupt
	//pc.putc(pc.getc());  // This is ok, 
	int c = pc.getc();  
	//pc.putc(c); 
	pc.putc(0x00000041); // display AAA in PC's sscom

	led2 = !led2;
}
 
int main() {
    pc.attach(&callback_ex);
 
    while (1) {
        led1 = !led1;
        wait(0.5);
    }
}

when i input A from PC's sscom uart tools， PC's sscom uart tools display AAA， help pls.

the answer is that PC's sscom tools send A followed by "\r\n", so enter the interrupt 3 times

posted by xu min 06 Sep 2018

1 Answer

Earl Manning
6 years, 2 months ago.

Hello Xu Min,

Thank you for the follow up with the answer. I will post it here so that the question gets marked as answer and other will find this answer easier.

Xu Min writes:

Quote:

the answer is that PC's sscom tools send A followed by "\r\n", so enter the interrupt 3 times

Best regards,

Earl, team Mbed