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syssi / esphome-soyosource-gtn-virtual-meter

ESPHome component to simulate the current clamp to control the Soyosource GTN1200 limiter
Apache License 2.0
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Add how to flash the alternative firmware to the WiFi dongle #60

Open syssi opened 2 years ago

syssi commented 2 years ago

Extend the WiFi dongle page by a "How to flash the alternative firmware" paragraph.

  1. Backup the stock firmware
  2. Flash the alternative firmware: esphome run esp8266-wifi-dongle-example.yaml
  3. Remove all wires especially the nRESET and GPIO0 pull-down
  4. Plug the WiFi dongle back into the Soyosource inverter
  5. Enjoy!

https://github.com/syssi/esphome-soyosource-gtn-virtual-meter/blob/main/docs/wifi-dongle/README.md

mrbluebrett commented 1 year ago

I’m trying to flash the wifi 1.7 module but i cant figure out how to do it… I have a ch340 module ( https://a.aliexpress.com/_EIqwewj ) and i connect the wires to the wifi module but i cant read or flash the module. Should I connect the Rx to Rx or the Rx to Tx? also which flasher can i use? Web? Espflash? I have esphome running in docker and usually download the firmware and flash it …

syssi commented 1 year ago

Did you try this how to to backup the ESP? https://github.com/syssi/esphome-soyosource-gtn-virtual-meter/blob/main/docs/wifi-dongle/README.md#how-to-backup-the-esp8266

syssi commented 1 year ago

The CH340 based usb-to-serial converter is fine. You can use any flashing tool as soon as you have prepared the wifi dongle properly (see the how to).

mrbluebrett commented 1 year ago

Ok, I did it thank you. I was connecting the Tx and Rx to the usb board pins, not to the esp itself.

syssi commented 1 year ago

The pins of the USB-plug are connected to the MS51FB9AE. The MS51 expects the specific protocol and isn't a transparent bridge / not only acts as a level shifter. So it's required to connect RX/TX directly to the ESP.