I cannot just create my own lowest priority task as FreeRTOS needs its own idle task to hover up old tasks.
I enabled legacy hooks & added vApplicationIdleHook() to profile interval between calls.
I use a flag to return from vApplicationIdleHook() until the application main is running.
On enabling the flag:
Code: Select all
I (5239) BTDM_INIT: BT controller compile version [bc0b51f]
I (5239) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (5359) phy: phy_version: 4000, b6198fa, Sep 3 2018, 15:11:06, 0, 0
I (5599) BLE_SERVER: ble_sk_server_start init bluetooth
Guru Meditation Error: Core 1 panic'ed (Cache disabled but cached memory region accessed)
Core 1 register dump:
PC : 0x400d53e4 PS : 0x00060034 A0 : 0x80093c55 A1 : 0x3ffbe890
0x400d53e4: vApplicationTickHook at C:/Users/Stuart/AppData/Roaming/SPB_16.6/esp/main/main/app_main.cpp:56
A2 : 0xf37fa0a0 A3 : 0x00000001 A4 : 0x3ffc8c34 A5 : 0x00000001
A6 : 0x00000001 A7 : 0x000000fe A8 : 0x80092f6d A9 : 0x0000abab
A10 : 0x003fffff A11 : 0x3ffdc580 A12 : 0x7fffffff A13 : 0x3f40534f
A14 : 0x00000001 A15 : 0x000000fe SAR : 0x0000001d EXCCAUSE: 0x00000007
EXCVADDR: 0x00000000 LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000
Core 1 was running in ISR context:
EPC1 : 0x40086915 EPC2 : 0x00000000 EPC3 : 0x00000000 EPC4 : 0x400d53e4
0x40086915: spi_flash_op_block_func at C:/Users/Stuart/AppData/Roaming/SPB_16.6/esp/esp-idf/components/spi_flash/cache_utils.c:82 (discriminator 1)
0x400d53e4: vApplicationTickHook at C:/Users/Stuart/AppData/Roaming/SPB_16.6/esp/main/main/app_main.cpp:56
Backtrace: 0x400d53e4:0x3ffbe890 0x40093c52:0x3ffbe8c0 0x400950cd:0x3ffbe8f0 0x400847e2:0x3ffbe900 0x40086912:0x00000000
0x400d53e4: vApplicationTickHook at C:/Users/Stuart/AppData/Roaming/SPB_16.6/esp/main/main/app_main.cpp:56
0x40093c52: xPortSysTickHandler at C:/Users/Stuart/AppData/Roaming/SPB_16.6/esp/esp-idf/components/freertos/port.c:436
0x400950cd: _frxt_timer_int at C:/Users/Stuart/AppData/Roaming/SPB_16.6/esp/esp-idf/components/freertos/portasm.S:303
0x400847e2: _xt_lowint1 at C:/Users/Stuart/AppData/Roaming/SPB_16.6/esp/esp-idf/components/freertos/xtensa_vectors.S:1105
0x40086912: spi_flash_op_block_func at C:/Users/Stuart/AppData/Roaming/SPB_16.6/esp/esp-idf/components/spi_flash/cache_utils.c:82 (discriminator 1)
The error manifests as a cache faults presumably as BLE has started a write to FLASH.
1) How would I detect cache disable & so exit (I have IRAM issues & cannot really log instrumentation into IRAM)
2) Is it really necessary for BLE to write to FLASH?
EDIT: Also looks like I am getting calls from both CPUs.
1) Are ticks common/synched on each CPU
2) How do I tell which CPU I am using at any time?