I have a ESP32-WROOM-32 module. It is solder on a breakout board and correctly power from a step down regulator.
I have been using the module for development, testing my code.
I recently run into SPI flash detection issue. The SPI flash comes up once after a long period not powered and then nothing.
Code: Select all
ets Jun 8 2016 00:22:57
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371
ets Jun 8 2016 00:22:57
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:5576
load:0x40078000,len:0
ho 12 tail 0 room 4
load:0x40078000,len:13744
entry 0x40078fc0
I (31) boot: ESP-IDF v3.1-dev-288-gdaa8cfa8-dirty 2nd stage bootloader
I (31) boot: compile time 21:15:44
I (32) boot: Enabling RNG early entropy source...
I (37) boot: SPI Speed : 40MHz
I (41) boot: SPI Mode : DIO
I (45) boot: SPI Flash Size : 4MB
I (49) boot: Partition Table:
I (53) boot: ## Label Usage Type ST Offset Length
I (60) boot: 0 nvs WiFi data 01 02 00009000 00006000
I (68) boot: 1 phy_init RF data 01 01 0000f000 00001000
I (75) boot: 2 factory factory app 00 00 00010000 00100000
I (83) boot: End of partition table
< Continues boot ........ >
ets Jun 8 2016 00:22:57
rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371
ets Jun 8 2016 00:22:57
rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371