ESP32 Forum

Dear ESP32 Members,

Does anyone know the schematic for this Dev board ?
https://www.aliexpress.com/item/Esp32-e ... 0.0.XFeuL2

And where can I find the original flash code ?
Any examples for it ?
Thanks

I got this on hello world example :

rst:0xc (SW_CPU_RESET),boot:0x17 (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:5556
load:0x40078000,len:0
load:0x40078000,len:13716
entry 0x40078fb4
I (28) boot: ESP-IDF v3.1-dev-162-geb659e4 2nd stage bootloader
I (29) boot: compile time 14:33:09
I (29) boot: Enabling RNG early entropy source...
I (35) boot: SPI Speed : 40MHz
I (39) boot: SPI Mode : DIO
I (43) boot: SPI Flash Size : 4MB
I (47) boot: Partition Table:
I (50) boot: ## Label Usage Type ST Offset Length
I (58) boot: 0 nvs WiFi data 01 02 00009000 00006000
I (65) boot: 1 phy_init RF data 01 01 0000f000 00001000
I (73) boot: 2 factory factory app 00 00 00010000 00100000
I (80) boot: End of partition table
I (84) esp_image: segment 0: paddr=0x00010020 vaddr=0x3f400020 size=0x04eb4 ( 20148) map
I (100) esp_image: segment 1: paddr=0x00014edc vaddr=0x3ffb0000 size=0x02140 ( 8512) load
I (105) esp_image: segment 2: paddr=0x00017024 vaddr=0x40080000 size=0x00400 ( 1024) load
I (111) esp_image: segment 3: paddr=0x0001742c vaddr=0x40080400 size=0x08444 ( 33860) load
I (134) esp_image: segment 4: paddr=0x0001f878 vaddr=0x400c0000 size=0x00000 ( 0) load
I (134) esp_image: segment 5: paddr=0x0001f880 vaddr=0x00000000 size=0x00790 ( 1936)
I (141) esp_image: segment 6: paddr=0x00020018 vaddr=0x400d0018 size=0x13340 ( 78656) map
I (182) boot: Loaded app from partition at offset 0x10000
I (182) boot: Disabling RNG early entropy source...
I (182) cpu_start: Pro cpu up.
I (186) cpu_start: Starting app cpu, entry point is 0x40080fe4
I (178) cpu_start: App cpu up.
I (197) heap_init: Initializing. RAM available for dynamic allocation:
I (203) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM
I (209) heap_init: At 3FFB2948 len 0002D6B8 (181 KiB): DRAM
I (216) heap_init: At 3FFE0440 len 00003BC0 (14 KiB): D/IRAM
I (222) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (228) heap_init: At 40088844 len 000177BC (93 KiB): IRAM
I (235) cpu_start: Pro cpu start user code
I (253) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
Hello world!
This is ESP32 chip with 2 CPU cores, WiFi/BT/BLE, silicon revision 1, 4MB external flash
Restarting in 10 seconds...
Restarting in 9 seconds...
Restarting in 8 seconds...
Restarting in 7 seconds...
Restarting in 6 seconds...
Restarting in 5 seconds...

This dev board uses the standard Wroom32 module from espressif.

The code that is currently loaded into the Chip is the standdard hello world application in the espressif ESP-IDF on githib.

You should be able to load and program all the standard examples to this board.

You can find the pinout of the Espressif module here:



The schematic of the boards varies with the vendor of the boards.

The best way is to search google images.

Hi !

Try this: https://www.hackster.io/johnnyfrx/esp32 ... ted-07ac5d
Not the schematics but definitely a good starting point.

Regards,


STB

Try to contact the seller, they usually can provide useful links.
And please share what you get