[question] how to flash mongoose using esptool.py? (as workaround)

[Harvie]

Hello, because of #20 i can't currently flash my board using mos flash so i have to use esptool.py shipped with arduino which works fine. But i don't know what addresses to specify in order to get it to flash mongoose.

I've unzipped images in build/fw directory and tried to flash it like this:

esptool.py --port /dev/ttyUSB3 write_flash 65536 display.bin 32768 partitions_mgos.bin

But it didn't really worked. Can you please tell me what files i need to flash to what memory offsets, so i can flash mongoose to esp32 using espressif's esptool.py as workaround until #20 gets resolved?

Thanks!

---

I have following files:

bootloader.bin
display.bin
fs.img
manifest.json
otadata.bin
partitions_mgos.bin

manifest.json:

{
  "build_id": "20190813-200053/v2.4.1-62-g2e8ce4b-master-dirty",
  "build_timestamp": "2019-08-13T20:00:53Z",
  "name": "display",
  "parts": {
    "app": {
      "addr": 65536,
      "cs_sha1": "0ff43eccbd7cec0e7f84df3c3ae97b797cdd46bd",
      "encrypt": true,
      "ptn": "app_0",
      "size": 874624,
      "src": "display.bin",
      "type": "app"
    },
    "boot": {
      "addr": 4096,
      "cs_sha1": "2cb1d70d873db1d35b6461ba629d625a02e99b2f",
      "encrypt": true,
      "size": 22848,
      "src": "bootloader.bin",
      "type": "boot",
      "update": false
    },
    "fs": {
      "cs_sha1": "f92e21335e1d013a9ad3b60e1c8945477b7e1e5d",
      "fs_size": 262144,
      "ptn": "fs_0",
      "size": 262144,
      "src": "fs.img",
      "type": "fs"
    },
    "nvs": {
      "addr": 36864,
      "encrypt": false,
      "fill": 255,
      "size": 16384,
      "type": "nvs"
    },
    "otadata": {
      "addr": 53248,
      "cs_sha1": "471af83fac6e5bd49355879b3acbed10bab6f423",
      "encrypt": true,
      "size": 8192,
      "src": "otadata.bin",
      "type": "otadata"
    },
    "pt": {
      "addr": 32768,
      "cs_sha1": "1d31498bef0ca43611e2c095836ce6b8d777419c",
      "encrypt": true,
      "size": 3072,
      "src": "partitions_mgos.bin",
      "type": "pt"
    }
  },
  "platform": "esp32",
  "version": "1.0"
}

[rojer]

you are on the right path, addr is the address to flash and you just need to flash all the parts and that's all.

[rojer]

however, i'm not sure esptool supports dtr/rts swap as your board requires

[Harvie]

however, i'm not sure esptool supports dtr/rts swap as your board requires

i am sure, i've managed to start flashing process using esptool.py (with default settings BTW). Both directly from commandline and through the arduino ide. I've succesfully uploaded sketches from arduino ide (eg. Blink example), but not the mongoose os.

you are on the right path, addr is the address to flash and you just need to flash all the parts and that's all.

Do i need to flash all the files? Even bootloader.bin? Will that overwrite default esp32 serial bootloader? What about fs.img? It does not have any addr specified in manifest.

But if i do esptool.py --port /dev/ttyUSB3 write_flash 65536 display.bin it says there's not enough space on flash. While with mos flash there's no such problem (on different board, with same module, which can be currently flashed by mos). I will check, but i am pretty sure, both have 4MB flash.