RE: Custom GATT - central hangs when connecting: nRF52810 + S112 | armgcc @SDK14.2

Håkon Alseth — Thu, 18 Jan 2018 15:17:11 GMT

I see the same issue here with the latest arm-none-eabi, where it get's stuck trying to transfer data over UART (nrf_log). It looks like -flto is trigger happy and removes IRQHandler's (and links them all in the Default_Handler) with the latest arm-none-eabi:

(gdb) print UARTE0_IRQHandler
$5 = {<text variable, no debug info>} 0x1b092 <WDT_IRQHandler>
(gdb) print Default_Handler
$6 = {<text variable, no debug info>} 0x1b092 <WDT_IRQHandler>

I feel your pain. compiler issues are the worst. It looks like you're not the only person seeing this: bugs.launchpad.net/.../1743765

Humble regards, Håkon

RE: Custom GATT - central hangs when connecting: nRF52810 + S112 | armgcc @SDK14.2

sirio — Thu, 18 Jan 2018 04:41:27 GMT

The answer seems to be that the -flto flag subtly breaks the build on PCA10040e +S112 using armgcc 7-2017-q4-major

... seriously debated removing the above rant since the answer is so anticlimactic, but I'll leave it here where it might help, and in monument to the self-inflicted trivialities that can ruin a programmer's day.