Watchdog event handler isn't called

I try to simulate system hang by adding while(1) after calling watch dog feeding function. But watchdog event handler _wdtEventHandler() isn't called.

int main(void) {

...

wdtInit();

    for (;;) {
        wdtFeed();
        while(1);

}

0 snowuyl over 3 years ago
wdt.h

Fullscreen 0486.wdt.c Download

#include "error.h" #include "nrf_log.h" #include "nrfx_wdt.h" #include "wdt.h" static bool _gWdtInitialized = false; static nrfx_wdt_channel_id _gWdtChannelID; void _wdtReboot(void) { NVIC_SystemReset(); } /* * WDT events handler. */ static void _wdtEventHandler(void) { NRF_LOG_WARNING("Watchdog timer event handler\n"); //_wdtReboot(); } int wdtInit(void) { ret_code_t errCode; nrfx_wdt_config_t wdtConfig = NRFX_WDT_DEAFULT_CONFIG; errCode = nrfx_wdt_init(&wdtConfig, _wdtEventHandler); if (errCode != NRF_SUCCESS) { NRF_LOG_WARNING("nrfx_wdt_init() failed\n"); return ERROR_WDT_INITIALIZE_FAIL; } errCode = nrfx_wdt_channel_alloc(&_gWdtChannelID); if (errCode != NRF_SUCCESS) { NRF_LOG_WARNING("nrfx_wdt_init() failed\n"); return ERROR_WDT_INITIALIZE_FAIL; } nrfx_wdt_enable(); _gWdtInitialized = true; return 0; } int wdtFeed(void) { if (!_gWdtInitialized) { return ERROR_WDT_UNINITIALIZED; } NRF_LOG_DEBUG("Watchdog timer feed\n"); nrfx_wdt_channel_feed(_gWdtChannelID); return 0; } //void WDT_IRQHandler(void) { // NRF_LOG_WARNING("Watchdog timer interrupt handler\n"); //}
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0 snowuyl over 3 years ago in reply to snowuyl

From the following log messages, nrfx_wdt_init() and nrfx_wdt_channel_alloc return NRF_SUCCESS. But why Watchdog event handler isn't called?

# SEGGER J-Link RTT Viewer V6.32i Terminal Log File
# Compiled: 15:22:50 on Jul 24 2018
# Logging started @ 04 Jul 2022 13:55:29
0> <info> PRS: Function: nrfx_prs_acquire, error code: NRF_SUCCESS.
0> <warning> UARTE: Function: nrfx_uarte_init, error code: NRF_SUCCESS.
0> <info> UARTE: Transfer rx_len: 1.
0> <info> UARTE: Function: nrfx_uarte_rx, error code: NRF_SUCCESS.
0> <info> app: ========| flash info |========
0> <info> app: erase unit: 4096 bytes
0> <info> app: program unit: 4 bytes
0> <info> app: end address: 0x7FFFF
0> <info> app: ==============================
0> <info> SAADC: Function: nrfx_saadc_init, error code: NRF_SUCCESS.
0> <info> PRS: Function: nrfx_prs_acquire, error code: NRF_SUCCESS.
0> <warning> UARTE: Function: nrfx_uarte_init, error code: NRF_SUCCESS.
0> <info> UARTE: Transfer rx_len: 1.
0> <info> UARTE: Function: nrfx_uarte_rx, error code: NRF_SUCCESS.
0> <info> app: ========| flash info |========
0> <info> app: erase unit: 4096 bytes
0> <info> app: program unit: 4 bytes
0> <info> app: end address: 0x7FFFF
0> <info> app: ==============================
0> <info> SAADC: Function: nrfx_saadc_init, error code: NRF_SUCCESS.
0> <info> SAADC: Function: nrfx_saadc_channel_init, error code: NRF_SUCCESS.
0> <info> SAADC: Function: nrfx_saadc_buffer_convert, buffer length: 1, active channels: 1.
0> <info> SAADC: Function: nrfx_saadc_buffer_convert, error code: NRF_SUCCESS.
0> SS.
0> <debug> SAADC: Event: NRF_SAADC_EVENT_END.
0> <info> app_timer: RTC: initialized.
0> <info> CLOCK: Function: nrfx_clock_init, error code: NRF_SUCCESS.
0> <debug> app: NOR_DATA_PERIOD=819
0>
0> <debug> app: NOR_RECORD_PERIOD=8192
0>
0> <info> WDT: Function: nrfx_wdt_init, error code: NRF_SUCCESS.
0> <info> WDT: Function: nrfx_wdt_channel_alloc, error code: NRF_SUCCESS.
0> <info> WDT: Enabled.
0> <debug> app: Watchdog timer feed
0>
0> <error> app: ERROR 4 [NRF_ERROR_NO_MEM] at ..\..\..\..\..\..\com<error> app: End of error report
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0 snowuyl over 3 years ago in reply to snowuyl

I am sure watchdog event handler _wdtEventHandler() is called by checking with LED. But why main() isn't called after calling NVIC_SystemReset().

int main(void) {
    log_init();
    uart_init();
    _showInfo();

...

}

static void _showInfo(void) {
    NRF_LOG_INFO("Version %d.%d.%d\n", MAJOR_VER, MINOR_VER, PATCH_VER);
}

I only " app: Version 1.0.0" one time in following log messages. It should be two times if main() is called after system reboot.

0> <info> app: Version 1.0.0
0>
0> <info> app: ========| flash info |========
0> <info> app: erase unit:   4096 bytes
0> <info> app: program unit: 4 bytes
0> <info> app: end address: 0x7FFFF
0> <info> app: ==============================
0> <info> app_timer: RTC: initialized.
0> <debug> app: NOR_DATA_PERIOD=819
0>
0> <debug> app: NOR_RECORD_PERIOD=8192
0>
0> <info> app: bsp_button_longkey_handler 0.
0> <info> app: POWER_ON.
0> <info> app: External devices initializing start
0> <info> app: Reg 0 20
0> <info> app: Reg 9 A
0> <info> app: Reg A D
0> <info> app: Reg 1 B
0> <info> app: Reg 2 D
0> <info> app: Reg D F
0> <info> app: Reg E 13
0> <info> app: Reg 36 10
0> <info> app: Reg 37 13
0> <info> app: Reg 5 11
0> <info> app: Reg 6 13
0> <info> app: Reg F 15
0> <info> app: Reg 10 19
0> <info> app: Reg 3 16
0> <info> app: Reg 4 19
0> <info> app: Reg 7 17
0> <info> app: Reg 8 19
0> <info> app: Reg 11 1B
0> <info> app: Reg 12 1F
0> <info> app: Reg 43 0
0> <info> app: Reg 44 0
0> <info> app: Reg B 1D
0> <info> app: Reg C 1F
0> <info> app: Reg 13 21
0> <info> app: Reg 14 25
0> <info> app: Reg 1D 3F
0> <info> app: Reg 64 0
0> <info> app: Reg 65 27
0> <info> app: Reg 66 0
0> <info> app: Reg 67 27
0> <info> app: Reg 68 0
0> <info> app: Reg 69 27
0> <info> app: Reg 52 2C
0> <info> app: Reg 53 2C
0> <info> app: Reg 6A 32
0> <info> app: Reg 6B 38
0> <info> app: Reg 1E 101
0> <info> app: Reg 20 3
0> <info> app: Reg 21 2
0> <info> app: Reg 22 802084
0> <info> app: Reg 23 124218
0> <info> app: Reg 4B F
0> <info> app: Reg 50 18
0> <info> app: Reg 31 20
0> <info> app: Reg 39 5
0> <info> app: Reg 4E 0
0> <info> app: Reg 4E 8
0> <info> app: Reg 45 8
0> <info> app: Reg 46 13
0> <info> app: Reg 47 14
0> <info> app: Reg 48 1F
0> <info> app: Reg 0 21
0> <warning> app: nrfx_wdt_init() return 0
0>
0> <info> app: External devices initializing finish
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0 snowuyl over 3 years ago in reply to snowuyl
Fullscreen 0636.wdt.c Download

#include "band_nctu.h" #include "error.h" #include "nrf_log.h" #include "nrfx_wdt.h" #include "wdt.h" static bool _gWdtInitialized = false; static nrfx_wdt_channel_id _gWdtChannelID; void _wdtReboot(void) { NVIC_SystemReset(); } /* * WDT events handler. */ static void _wdtEventHandler(void) { NRF_LOG_WARNING("Watchdog timer event handler\n"); _wdtReboot(); } int wdtInit(void) { ret_code_t errCode; nrfx_wdt_config_t wdtConfig = NRFX_WDT_DEAFULT_CONFIG; errCode = nrfx_wdt_init(&wdtConfig, _wdtEventHandler); if (errCode != NRF_SUCCESS) { NRF_LOG_WARNING("nrfx_wdt_init() failed\n"); return ERROR_WDT_INITIALIZE_FAIL; } errCode = nrfx_wdt_channel_alloc(&_gWdtChannelID); if (errCode != NRF_SUCCESS) { NRF_LOG_WARNING("nrfx_wdt_init() failed\n"); return ERROR_WDT_INITIALIZE_FAIL; } nrfx_wdt_enable(); _gWdtInitialized = true; NRF_LOG_WARNING("nrfx_wdt_init() return 0\n"); return 0; } int wdtFeed(void) { if (!_gWdtInitialized) { return ERROR_WDT_UNINITIALIZED; } NRF_LOG_DEBUG("Watchdog timer feed\n"); nrfx_wdt_channel_feed(_gWdtChannelID); return 0; }

6835.wdt.h
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0 Vidar Berg over 3 years ago in reply to snowuyl

Hello,

It sounds like it is working now, but that you are just missing some log messages at the beginning of main()?
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