6 years, 7 months ago.

mbed_interface_reset() with OS5 not resetting the semihost interface

I have been developing with mbed with an LPC1768 for a good few years now and for convenience have developed a serial interface framework for s/w development that uses mbed_interface_reset() to invoke a software controlled reset rather than having to press the reset button - it all works really well.

Problem I have: I am just starting to migrate to OS5 to utilise threading and have ported the bare minimum code to get my basic serial framework (above) working with continued use of mbed_interface_reset() and it no longer works. I have printf debugged and the call to the function returns -1 suggesting the mbed_interface_connected() is NOT connected (Github code snippet below). I am receiving and handshaking serial commands through the Serial(USBTX, USBRX) interface so it's definitely connected in some context at least.

## Github library code snippet

int mbed_interface_reset(void) { if (mbed_interface_connected()) { semihost_reset(); return 0; } else { return -1; } }

If anyone can provide any pointers that would be greatly helpful.