LPC MicrocontrollersのトピックRe: Semihosted behavior when no jtag

Semihosted behavior when no jtag

simonfourquier — Wed, 08 May 2019 12:10:53 GMT

I use semihosted (on lpcxpresso1769) for do a log of my application in a file.

That work fine when i run from mcuxpresso.

But if i reset me board I want me aplication continue to work witouth log. But my application do a hardFault in fopen()

is possible to test if we are connected in jtag or not?

converse — Wed, 08 May 2019 16:06:22 GMT

This thread should help you

BlackNight — Thu, 09 May 2019 03:55:30 GMT

You could use a modification of the hard fault handler.

Have a look at

and for McuHardFault_CONFIG_SETTING_SEMIHOSTING.

It basically continues in case you get a hard fault because no debugger is attached.

As for detecting if a debugger is attached: I think there is a bit in the ARM DWT (see Cycle Counting on ARM Cortex-M with DWT | MCU on Eclipse ), but I would have to check.

I hope this helps,

Erich

simonfourquier — Thu, 09 May 2019 17:35:16 GMT

Thanks you

if ((CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk)==CoreDebug_DHCSR_C_DEBUGEN_Msk) {
work fine