Flashing a 1MB ESP-01

Posted on Sat 29th, January 2022

• #1

sammachin
I've got some ESP-01's here that I'd like to put esprunio on they're a 1MB board according to esptool:
```
esptool.py v3.3-dev
Serial port /dev/tty.usbserial-220
Connecting....
Detecting chip type... Unsupported detection protocol, switching and trying again...
Connecting...
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: a4:cf:12:c9:1f:ab
Uploading stub...
Running stub...
Stub running...
Manufacturer: 5e
Device: 4014
Detected flash size: 1MB
Hard resetting via RTS pin...
```
Can someone advise on the command I'd need to flash them with and if I can use files from the published builds, (I don't really want to get into setting up a build environment for these) Can I use (some of ) the files in https://www.espruino.com/binaries/espruino_2v11_esp8266_4mb/ with a different map?
• #2

fanoush

https://github.com/espruino/Espruino/blob/master/targets/esp8266/README_flash.txt#L23
• #3

sammachin

Thanks that worked, I had to set —flash_size 8m as well but that makes sense.

And the mode to dout for these boards.
• #4

Mfarooqi

Hello Sammachin, Could you please help me what exactly did you do if this worked for me.. I changed address as mentioned on line no. 29 ..
I also followed line 55, 56.
...
Please !
• #5

MaBe

There is info in the make file for a 1MB ESP8266 board

https://github.com/espruino/Espruino/blob/2e0502cbb721c72fcae6807ac85edd9900b60a40/make/targets/ESP8266.make#L32

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