Hi,
I recently bricked a couple of MCUs playing with low power modes.
I'm still not sure what happened, but enabling LPM on my board makes JTAG
inoperant.
I spent a lot of time trying to save these dead MCUs.
To avoid this situation, I added some kind of recovery mode at boot :
board.c
void board_init(void)
...
// Safeguard: Infinite loop if board started with buttons pushed
gpio_init(BTN0_PIN, GPIO_IN_PU);
gpio_init(BTN1_PIN, GPIO_IN_PU);
if (!gpio_read(BTN0_PIN) || !gpio_read(BTN1_PIN) ) {
gpio_set(LED0_PIN);
gpio_set(LED1_PIN);
while(1){}
}
Did I reinvent the wheel ?
Do Riot have already mecanisms to delay boot , or other way to protect from
bad images ?
Thanks
Olivier Fauchon
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