bt classic discoveries (starting / stopping) causes unexpected reset

[andurbal]

Development Kit: m5stack grey and m5stackcore2 used with ESPIDF
Module or chip used: ESP32 chip revision: 3
IDF version: V4.2
Build System: CMake
Compiler version : xtensa-esp32-elf-gcc (crosstool-NG esp-2020r3) 8.4.0
Operating System: WINDOWS
Using an IDE?: YES VISUAL CODE WITH ESPRESSIF EXTENSION
Power Supply: USB
##Problem Description
bluetooth classic discovery. Launching discoveries periodically on BT CLASSIC via esp_bt_gap_start_discovery(..) produces an unexpected RESET.

Our application is starting BT Classic discoveries. For example Start a Discovery of aprox 2 seconds each 3 seconds. All works OK (devices are founded, events are coming etc...), but in a not predictable time, can be 2 hours, can be 7 hours, the ESP32 Resets because of Guru Meditation Error: Core 0 panic'ed (Interrupt wdt timeout on CPU0)

I enclose a code that is crashing, and the crash LOG

Any Ideas???
Has someone encountered something similar??

Code: [Select all] [Expand/Collapse]

1.  
2. `#include <stdint.h>
3. #include <string.h>
4. #include <stdbool.h>
5. #include <stdio.h>
6. #include "nvs.h"
7. #include "nvs_flash.h"
8. #include "freertos/FreeRTOS.h"
9. #include "freertos/task.h"
10. #include "esp_system.h"
11. #include "sdkconfig.h"
12. #include "esp_log.h"
13. #include "esp_bt.h"
14. #include "esp_bt_main.h"
15. #include "esp_gap_bt_api.h"
16. #include "esp_spp_api.h"
17. #include "esp32/rom/rtc.h"
18.  
19. const char *TAG_MAIN = "MINIMAL_CODE_TEST_RESET.CPP";
20. uint32_t InqCycles = 0;
21.  
22. // Relaunch a INQUIRY in BT CLASSIC each , for example 3 seconds
23. void vTaskControlBluetooth(void* pvParameters)
24. {
25. #define INQUIRY_SECONDS_ON 1
26. #define INQUIRY_SECONDS_OFF 2
27. static int8_t InquirySlot = 0;
28. esp_err_t res;
29.  
30. for (;;) {
31.  
32.     // Start a CLASSIC DISCOVERY
33.     if (InquirySlot==0){
34.         res =  esp_bt_gap_start_discovery(ESP_BT_INQ_MODE_GENERAL_INQUIRY, 3, 0);
35.         if (res!=ESP_OK) ESP_LOGI(TAG_MAIN,"BT Launch Result %d, code %s", res, esp_err_to_name(res));
36.     }
37.     // Cancel a Classic DISCOVERY
38.     if (InquirySlot==INQUIRY_SECONDS_ON){
39.         res =  esp_bt_gap_cancel_discovery();
40.         if (res!=ESP_OK) ESP_LOGI(TAG_MAIN,"BT Stop Result %d, code %s", res, esp_err_to_name(res));
41.     }
42.     // Move Time SLOT
43.     if (++InquirySlot>=(INQUIRY_SECONDS_ON+INQUIRY_SECONDS_OFF)){
44.         InquirySlot=0;
45.         InqCycles++;
46.     }
47.            
48.     // Suspend 1sec
49.     vTaskDelay(pdMS_TO_TICKS(1000));
50. }
51. vTaskDelete(NULL);
52. }
53.  
54. // Periodic Report Last Reset Cause
55. void vTaskReportOnTerminal(void* pvParameters)
56. {
57. for (;;)
58. {
59. printf("LAST RESET CAUSED BY REASON CODE : %d (Core0) %d (Core1), Inq Cycles %d\r\n", rtc_get_reset_reason(0),rtc_get_reset_reason(1), InqCycles);
60. vTaskDelay(pdMS_TO_TICKS(60*1000));
61. }
62. vTaskDelete(NULL);
63. }
64.  
65. void NVS_InitNVS()
66. {
67. esp_err_t ret = nvs_flash_init();
68. if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
69. ESP_LOGI(TAG_MAIN, "NO FREE en NVS FLASH INIT %d", ret);
70. ESP_ERROR_CHECK(nvs_flash_erase());
71. ret = nvs_flash_init();
72. }
73. ESP_LOGI(TAG_MAIN, "NVS FLASH INIT result %d", ret);
74. }
75.  
76. extern "C" void app_main(void) {
77.  
78. BaseType_t xReturned;
79.  
80. esp_log_level_set(TAG_MAIN, ESP_LOG_INFO);          // Set LOG LEVEL
81. NVS_InitNVS();                                      // Init NVS
82.  
83.  
84. // Init Btooth
85. esp_bt_controller_config_t cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
86. ESP_ERROR_CHECK(esp_bt_controller_init(&cfg));
87. ESP_ERROR_CHECK(esp_bt_controller_enable(ESP_BT_MODE_BTDM));
88. ESP_ERROR_CHECK(esp_bluedroid_init());
89. ESP_ERROR_CHECK(esp_bluedroid_enable());
90. //ESP_ERROR_CHECK(esp_spp_init(ESP_SPP_MODE_CB));       // esto no influye
91.  
92. // Launch periodic Logs on Monitor
93. xReturned = xTaskCreate(vTaskReportOnTerminal,"TASKREPORT",3*1024,NULL,tskIDLE_PRIORITY,NULL);
94. configASSERT((xReturned == pdPASS));
95.  
96. // Launch Task to Restart BT CLASSIC each XX Seconds
97. xReturned = xTaskCreate(vTaskControlBluetooth,"TASKLAUNCHBT",3*1024,NULL,tskIDLE_PRIORITY,NULL);
98. configASSERT((xReturned == pdPASS));
99. }
100.  
101. //----------------------------------------------------------------------------------------------------
102. //----------------------------------------------------------------------------------------------------
103. //----------------------------------------------------------------------------------------------------
104. //----------------------------------------------------------------------------------------------------
105. //----------------------------------------------------------------------------------------------------
106. // START STOP INQUIRY + SPP NO STARTED ----- CRASH
107. //----------------------------------------------------------------------------------------------------
108. //----------------------------------------------------------------------------------------------------
109. //----------------------------------------------------------------------------------------------------
110. //----------------------------------------------------------------------------------------------------
111. //----------------------------------------------------------------------------------------------------
112. // ASSERT_ERR(0), in lm_task.c at line 3997
113. // Guru Meditation Error: Core 0 panic'ed (Interrupt wdt timeout on CPU0).
114.  
115. // Core 0 register dump:
116. // PC : 0x40082f08 PS : 0x00060d34 A0 : 0x8005351c A1 : 0x3ffd0500
117. // A2 : 0x00000001 A3 : 0x00000000 A4 : 0x60008048 A5 : 0x3ffbdc0c
118. // A6 : 0x3ffbdc0c A7 : 0x00000001 A8 : 0x80082f08 A9 : 0x3ffd04e0
119. // A10 : 0x00000029 A11 : 0x00000029 A12 : 0x00000010 A13 : 0xffffffff
120. // A14 : 0x00000000 A15 : 0xfffffffb SAR : 0x00000004 EXCCAUSE: 0x00000005
121. // EXCVADDR: 0x00000000 LBEG : 0x40082eb0 LEND : 0x40082eb7 LCOUNT : 0x00000000
122.  
123. // Backtrace:
124. // 0x40082f05:0x3ffd0500
125. // 0x40053519:0x3ffd0520
126. // 0x40083e92:0x3ffd0540
127. // 0x40019d11:0x3ffd0570
128. // 0x40055b4d:0x3ffd0590
129. // 0x40127f4f:0x3ffd05b0
130. // 0x40128541:0x3ffd05d0
131. // 0x4008ddb5:0x3ffd0600
132. //
133. // 0x40082f05: r_assert_err at ??:?
134. // 0x40053519: ?? ??:0
135. // 0x4008ddb5: vPortTaskWrapper at C:/Users/anurb/esp/esp-idf/components/freertos/xtensa/port.c:143
136. // 0x40019d11: ?? ??:0
137. // 0x40055b4d: ?? ??:0
138. // 0x40127f4f: r_rw_schedule at ??:?
139. // 0x40128541: btdm_controller_task at ??:?
140. // 0x4008ddb5: vPortTaskWrapper at C:/Users/anurb/esp/esp-idf/components/freertos/xtensa/port.c:143
141. //
142. // Core 1 register dump:
143. // PC : 0x4015df9a PS : 0x00060034 A0 : 0x800d42ad A1 : 0x3ffbc460
144. // A2 : 0x00000000 A3 : 0x00000000 A4 : 0x00000001 A5 : 0x80000001
145. // A6 : 0x00000003 A7 : 0x00060023 A8 : 0x800d41fe A9 : 0x3ffbc430
146. // A10 : 0x00000000 A11 : 0x00060a23 A12 : 0x00060a20 A13 : 0x00060a23
147. // A14 : 0x00000001 A15 : 0x00000000 SAR : 0x00000000 EXCCAUSE: 0x00000005
148. // EXCVADDR: 0x00000000 LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000
149.  
150. // Backtrace:0x4015df97:0x3ffbc460 0x400d42aa:0x3ffbc480 0x4008e745:0x3ffbc4a0 0x4008ddb5:0x3ffbc4c0
151.  
152. // ELF file SHA256: 54387e1c21c6e4cd
153. `

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