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I managed to flash the device but I am ending up with this on the serial interface:
Code: Select all
rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0018,len:4
load:0x3fff001c,len:4332
load:0x40078000,len:0
load:0x40078000,len:10992
entry 0x4007a6c4
I (344) cpu_start: Pro cpu up.
I (344) cpu_start: Single core mode
I (345) heap_init: Initializing. RAM available for dynamic allocation:
I (348) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM
I (354) heap_init: At 3FFDCD68 len 00003298 (12 KiB): DRAM
I (360) heap_init: At 3FFE0440 len 00003BC0 (14 KiB): D/IRAM
I (367) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (373) heap_init: At 4008FC7C len 00010384 (64 KiB): IRAM
I (379) cpu_start: Pro cpu start user code
I (173) cpu_start: Starting scheduler on PRO CPU.
Brownout detector was triggered
Guru Meditation Error of type IllegalInstruction occurred on core 0. Exception was unhandled.
Is the reason because the power is not sufficient or just not stable? how do I fix this?