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Add the ability to be called back when the device is about to reset #1012

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Merged
merged 1 commit into from Nov 15, 2015
Merged

Add the ability to be called back when the device is about to reset #1012

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8 changes: 8 additions & 0 deletions cores/esp8266/core_esp8266_postmortem.c
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,11 @@ static void uart1_write_char_d(char c);
static void print_stack(uint32_t start, uint32_t end);
//static void print_pcs(uint32_t start, uint32_t end);

extern void __custom_crash_callback( struct rst_info * rst_info, uint32_t stack, uint32_t stack_end ) {
}

extern void custom_crash_callback( struct rst_info * rst_info, uint32_t stack, uint32_t stack_end ) __attribute__ ((weak, alias("__custom_crash_callback")));
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I've aped the style used elsewhere in this project, though I must admit I don't know the reason for the alias (my guess is that it makes for less confusion when looking at stack dumps).


void __wrap_system_restart_local() {
register uint32_t sp asm("a1");

Expand Down Expand Up @@ -92,6 +97,9 @@ void __wrap_system_restart_local() {

// print_pcs(sp + offset, stack_end);
print_stack(sp + offset, stack_end);

custom_crash_callback( &rst_info, sp + offset, stack_end );

delayMicroseconds(10000);
__real_system_restart_local();
}
Expand Down