9 years, 11 months ago.

USBSerial on the FDRM-K64F

Hi,

The program below does not work on the FDRM-K64F. The program hangs and Windows reports a USB device that did not initialize properly. The program runs fine on the LPC-4088. However, if I comment out the "USBSerial serial;" line inside the usb_thread function and uncomment the global "USBSerial serial;" line, the code works on the FDRM-K64F. Any ideas why this is happening? I have updated all the libs to the most recent release.

Regards,

Tom Doyle

1. include "mbed.h"
2. include "rtos.h"
3. include "USBSerial.h"

DigitalOut led(LED2, 1);

USBSerial serial;

void usb_thread(void const *argument) { USBSerial serial;

while (true) { led = !led.read(); serial.printf("USB Thread\r\n"); Thread::wait(1000); } }

int main() { Thread usbThread(usb_thread);

while (true) { Thread::wait(10000); } }