Board markings

PLD-PZ005-V1.9.
12/13/2018

wifi module

TYWE2S

pins on flat side (bottom)

3v3
gnd
rx
tx
12
14

pins on side with components

rst
ad
13
04
05

sonoff tasmota

https://github.com/arendst/Sonoff-Tasmota/issues/3950

{"NAME":"Teckin","GPIO":[0,17,0,53,134,132,0,0,131,56,21,0,0],"FLAG":0,"BASE":52}

enable user config

dpavlin@nuc:/nuc/esp8266/Sonoff-Tasmota$ git diff
diff --git a/platformio.ini b/platformio.ini
index 59fab723..98d285fc 100755
--- a/platformio.ini
+++ b/platformio.ini
@@ -193,7 +193,7 @@ build_flags               = ${core_active.build_flags}
 ;                            -DFIRMWARE_BASIC
 ;                            -DFIRMWARE_KNX_NO_EMULATION
 ;                            -DFIRMWARE_DISPLAYS
-;                            -DUSE_CONFIG_OVERRIDE
+                            -DUSE_CONFIG_OVERRIDE
 
 ; *** Fix espressif8266@1.7.0 induced undesired all warnings
 build_unflags             = -Wall

dpavlin@nuc:/nuc/esp8266/Sonoff-Tasmota$ vi sonoff/user_config_override.h

Configure defaults for your device and build only sonoff firmware (we don't need all variants)

build

dpavlin@nuc:/nuc/esp8266/Sonoff-Tasmota$ platformio run -e sonoff

flashing

connect IO0 to GND to get in bootloader

erase flash

Flashing sonoff doesn't work for me reliably if I don't erase flash first. I suspect that config area is corrupted or something similar.

dpavlin@x200:/mnt/nuc/esp8266/esptool$ ./esptool.py --port /dev/ttyUSB2 erase_flash                                    
esptool.py v2.8-dev
Serial port /dev/ttyUSB2
Connecting....
Detecting chip type... ESP8266
Chip is ESP8285
Features: WiFi, Embedded Flash
Crystal is 26MHz
MAC: c4:4f:33:87:b1:bd
Uploading stub...
Running stub...
Stub running...
Erasing flash (this may take a while)...
Chip erase completed successfully in 6.6s
Hard resetting via RTS pin...

write_flash

dpavlin@x200:/mnt/nuc/esp8266/esptool$ ./esptool.py --port /dev/ttyUSB2 write_flash 0x0 ../Sonoff-Tasmota/.pioenvs/sonoff/firmware.bin 
esptool.py v2.8-dev
Serial port /dev/ttyUSB2
Connecting....
Detecting chip type... ESP8266
Chip is ESP8285
Features: WiFi, Embedded Flash
Crystal is 26MHz
MAC: dc:4f:22:ee:a2:4a
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 1MB
Compressed 565472 bytes to 388329...
Wrote 565472 bytes (388329 compressed) at 0x00000000 in 34.3 seconds (effective 131.8 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

Please note that 565472 is bigger than 512Kb which means that OTA update won't fit if firmware size isn't reduced.

dpavlin@x200:/mnt/nuc/esp8266/esptool$ ./esptool.py --port /dev/ttyUSB2 write_flash 0x0 ../Sonoff-Tasmota/.pioenvs/sonoff/firmware.bin
esptool.py v2.8-dev
Serial port /dev/ttyUSB2
Connecting....
Detecting chip type... ESP8266
Chip is ESP8285
Features: WiFi, Embedded Flash
Crystal is 26MHz
MAC: c4:4f:33:87:b1:bd
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 1MB
Compressed 491040 bytes to 339235...
Wrote 491040 bytes (339235 compressed) at 0x00000000 in 30.0 seconds (effective 131.0 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

Remove bridge from IO0 to GND and test module.