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Distribute master OTA images to slaves over ESP-NOW.

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After UART OTA the master reads the staged partition in 4 KiB blocks (200 B ESP-NOW chunks), waits for per-slave block ACKs, and fixes the final partial block. Slaves reuse ota_uart; send pacing and logging improve reliability.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
skruecken
2026-05-19 01:00:56 +02:00
co-authored by Cursor
parent 4bf43d8a5e
commit 9b7bda8551
13 changed files with 835 additions and 33 deletions
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main/README.md
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@@ -110,6 +110,12 @@ Schema: `proto/esp_now_messages.proto`. Encode/decode: `esp_now_proto.c`. The ES
| `ESPNOW_SLAVE_INFO` | Slave → master | `EspNowSlavePresence` |
| `ESPNOW_HEARTBEAT` | Slave → master | `EspNowSlavePresence` (same fields) |
| `ESPNOW_SET_ACCEL_DEADZONE` | Master → slave | `EspNowAccelDeadzone` (`deadzone` LSB) |
| `ESPNOW_OTA_START` | Master → slave (unicast) | `EspNowOtaStart` (`total_size`) |
| `ESPNOW_OTA_PAYLOAD` | Master → slave | `EspNowOtaPayload` (`seq`, up to 200 B `data`) |
| `ESPNOW_OTA_END` | Master → slave | `EspNowOtaEnd` |
| `ESPNOW_OTA_STATUS` | Slave → master | `EspNowOtaStatus` (same status codes as UART OTA) |
After a successful UART OTA on the master, `ota_espnow.c` reads the staged image from flash in **4 KiB** blocks (sent as **200 B** ESP-NOW chunks) and waits for **block_ack** from every available slave before continuing. Slaves use the same `ota_uart` 4 KiB buffer as UART OTA.
`EspNowSlavePresence`: `network`, `mac` (6 bytes), `version`, `slave_id`, `available`, `used`.
@@ -186,9 +192,9 @@ Host and master speak nanopb-encoded `UartMessage` inside UART frames (byte 0 =
| 6 | `ACCEL_DEADZONE` | Implemented (`cmd_accel_deadzone.c`) — get/set accel filter LSB |
| 16 | `OTA_START` | Implemented (`cmd_ota.c`) — begin UART OTA on inactive slot |
| 17 | `OTA_PAYLOAD` | Implemented — up to 200 B per frame; device buffers 4 KiB |
| 18 | `OTA_END` | Implemented — flush, `esp_ota_end`, set boot partition |
| 18 | `OTA_END` | Implemented — flush, `esp_ota_end`, push image to slaves via ESP-NOW, set boot |
| 19 | `OTA_STATUS` | Device → host (prepare/ready/block ACK/success/failed) |
| 20 | `OTA_START_ESPNOW` | Planned |
| 20 | `OTA_START_ESPNOW` | Implemented — re-distribute staged image to slaves only |
Regenerate C code: