void pp_soft_wdt_feed()
{
struct rst_info rst_info;
rst_info.exccause = RSR(EXCCAUSE);
rst_info.epc1 = RSR(EPC1);
rst_info.epc2 = RSR(EPC2);
rst_info.epc3 = RSR(EPC3);
rst_info.excvaddr = RSR(EXCVADDR);
rst_info.depc = RSR(DEPC);
rst_info.reason = WDT_RST_FLAG;
system_rtc_mem_write(0, &rst_info, sizeof(rst_info));
if(wdt_flg == true) {
Cache_Read_Disable();
Cache_Read_Enable_New();
system_restart_local();
}
else {
#if SDK_VERSION >= 1119
wDev_MacTim1Arm(soft_wdt_interval);
#else
ets_timer_disarm(SoftWdtTimer);
ets_timer_arm_new(SoftWdtTimer, soft_wdt_interval, 0, 1);
#endif
wdt_flg = true;
pp_post(12);
}
}
void pp_soft_wdt_feed_local()
{
struct rst_info rst_info;
rst_info.exccause = RSR(EXCCAUSE);
rst_info.epc1 = RSR(EPC1);
rst_info.epc2 = RSR(EPC2);
rst_info.epc3 = RSR(EPC3);
rst_info.excvaddr = RSR(EXCVADDR);
rst_info.depc = RSR(DEPC);
if(wdt_flg == true) {
rst_info.reason = REASON_SOFT_WDT_RST; // =3
system_rtc_mem_write(0, &rst_info, sizeof(rst_info));
ets_intr_lock();
Wait_SPI_Idle(flashchip);
Cache_Read_Enable_New();
system_restart_local();
}
else {
rst_info.reason = REASON_WDT_RST; // =1
system_rtc_mem_write(0, &rst_info, sizeof(rst_info));
#if DEF_SDK_VERSION >= 1119
wDev_MacTim1Arm(soft_wdt_interval);
#else
ets_timer_disarm(SoftWdtTimer);
ets_timer_arm_new(SoftWdtTimer, soft_wdt_interval, 0, 1);
#endif
wdt_flg = true;
pp_post(12);
}
}
/*
* xtos low level exception handler (in rom)
* populates an xtos_regs structure with (most) registers
* present at the time of the exception and passes it to the
* high-level handler.
*
* Note that the a1 (sp) register is clobbered (bug? necessity?),
* however the original stack pointer can be inferred from the address
* of the saved registers area, since the exception handler uses the same
* user stack. This might be different in other execution modes on the
* quite variegated xtensa platform family, but that's how it works on ESP8266.
*/
IRAM NOINSTR void esp_exception_handler(struct xtensa_stack_frame *frame) {
uint32_t cause = RSR(EXCCAUSE);
uint32_t vaddr = RSR(EXCVADDR);
fprintf(stderr, "\nTrap %d: pc=%p va=%p\n", cause, (void *) frame->pc,
(void *) vaddr);
memcpy(®s.a[2], frame->a, sizeof(frame->a));
regs.a[0] = frame->a0;
regs.a[1] = (uint32_t) frame + ESP_EXC_SP_OFFSET;
regs.pc = frame->pc;
regs.sar = frame->sar;
regs.ps = frame->ps;
regs.litbase = RSR(LITBASE);
handle_exception(®s);
fprintf(stderr, "rebooting\n");
fs_flush_stderr();
/*
* Documented `system_restart` does a lot of things (cleanup) which (seems)
* cannot be done from exc handler and only after cleanup it calls
* `system_restart_local`.
*/
system_restart_local();
}