mirror of https://github.com/OpenIPC/wiki.git
173 lines
5.0 KiB
Markdown
173 lines
5.0 KiB
Markdown
# IPC-RM1-BLK7202V3-M43A-WIFI
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- [Overview](#overview)
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- [Device info](#Device-info)
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- [Connectors](#Connectors)
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- [Front side](#Front-side)
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- [Back side](#Back-side)
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- [GPIOs](#GPIOs)
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- [Muxing](#Muxing)
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- [SD Card](#SD-Card)
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- [Speaker](#Speaker)
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- [Flashing](#Flashing)
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- [Flash memory layout](#Flash-memory-layout)
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- [Summary](#Summary)
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- [TODO](#TODO)
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# Overview
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Board found in cheap indoor Cootli WiFi PTZ cam. Board looks very similar to [XM IPG-G4-WR-BL](http://baike.xm030.cn:81/%E4%BA%A7%E5%93%81%E5%8F%82%E6%95%B0/English/IPG%E6%A8%A1%E7%BB%84/Parameters%20for%20IPG-G4-WR.pdf) but PCB layout a bit different.
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All tests are complete on [gk7202v300_lite_cootli_camv0103-nor](https://github.com/OpenIPC/builder/releases/download/latest/gk7202v300_lite_cootli_camv0103-nor.tgz) firmware (build Feb 8 2024).
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## Device info
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| System | Description | Comments |
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|-|-|-|
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| SoC | GK7202V300 | |
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| Flash | XMC XM25QH64CHIQ | 8MB |
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| Sensor | SmartSens SC223A* | 1920x1080 |
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| Audio | MIC + SPK | |
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| Storage | Micro SD | |
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| LAN | - | - |
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| WiFi | iComm SV6355 | UF.L (IPX) |
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| BT | +? | +? |
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| Motors | 2x Stepper | GPIO + ULN2803A |
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| Dimensions | 38 x 54 mm | |
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\* - reported by ipctool
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Front side
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Back side
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PCB markings
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# Connectors
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Connectors type JST 1.25mm
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## Front side
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| Connector | Type |
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|:-:|:-|
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| IRCUT | 2pin JST |
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| LED | 5pin JST |
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| MIC | 2pin JST |
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## Back side
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- Micro SD Card Socket
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- UART (unsoldered, to the left of SPK, pin1 RX, pin2 TX)
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| Connector | Type |
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|:-:|:-|
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| SPK | 2pin JST |
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| H | 5pin JST |
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| V | 5pin JST |
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| +5V | 2pin JST |
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| RF | UF.L (IPX) |
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# GPIOs
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| GPIO | Connector | Description |
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|:-:|:-:|:-:|
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| 0* | - | Reset button |
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| 4 | LED pin 5 | WLED |
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| 8 | WiFi module pin 3 | LO - Power ON |
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| 12 | H pin 5 | Mot H |
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| 13 | H pin 2 | Mot H |
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| 14 | H pin 4 | Mot H |
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| 15 | H pin 3 | Mot H |
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| 16 | LED pin 4 | IRLED |
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| 52 | V pin 2 | Mot V |
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| 53 | V pin 3 | Mot V |
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| 54 | V pin 4 | Mot V |
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| 55 | V pin 5 | Mot V |
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| 56 | IRCUT pin 1 | LO - IRCUT ON |
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| 57* | LED pin 3 | IRSens |
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| 58 | IRCUT pin 2 | LO - IRCUT OFF |
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| 70 | - | SD PWR (LO - Power ON) |
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| 51 | - | AUDIO AMP |
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\* - unconfirmed.
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## Muxing
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No muxing required if Majestic takes control over pins. Otherwise, muxing can be done using the following commands.
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Muxing GPIO16 for taking control over IRLED pin:
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```sh
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devmem 0x120c0020 32 0x432 # GPIO2_0 (GPIO16)
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```
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Also for motors.
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Muxing GPIO12, GPIO14, GPIO15 (motors H connector):
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```sh
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devmem 0x120c0010 32 0x1e02 # GPIO1_4 (GPIO12)
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devmem 0x120c0018 32 0x1d02 # GPIO1_6 (GPIO14)
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devmem 0x120c001c 32 0x1402 # GPIO1_7 (GPIO15)
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```
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Shortly after **Loading of kernel modules...** GPIO13 turns to HI (one of motors winding constantly powered), so maybe necesary turn it to LO:
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```sh
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gpio clear 13
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gpio unexport 13
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```
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## SD Card
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By default SD Card unpowered, so we need turn GPIO70 to LO somehow.
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To poweron SD CARD from Kernel:
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```sh
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gpio clear 70
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```
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or
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```sh
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devmem 0x120B8400 32 0x40 # turn GPIO8_6 to output mode
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devmem 0x120B8100 32 0x00 # set GPIO8_6 to LO
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```
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And reattach SD card.
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To poweron SD CARD from U-Boot:
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```sh
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mw 0x120B8400 0x40 # turn GPIO8_6 to output mode
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mw 0x120B8100 0x00 # set GPIO8_6 to LO
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mmc rescan
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```
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## Speaker
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Device supports playing PCM signed 16-bit little-endian, 8000 Hz, 1CH by sending data to http://192.168.0.10/play_audio endpoint.
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Audio file can be encoded like this:
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```sh
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ffmpeg -i input.wav -f s16le -ar 8000 -ac 1 output.pcm
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```
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And send to camera's speaker:
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```sh
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curl -v -u user:pass -H "Content-Type: application/json" -X POST --data-binary @audio.pcm http://192.168.0.10/play_audio
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```
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# Flashing
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Stock firmware is pwd locked and LAN interface does not present, so I'm guessing following methods are available to flash this board:
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- [burn](https://github.com/OpenIPC/burn) + [u-boot-gk7202v300-universal.bin](https://github.com/OpenIPC/firmware/releases/download/latest/u-boot-gk7202v300-universal.bin) and then upload FW via X/Y/ZMODEM (e.g. **loady**. Tip: use **baud** option for speed up) or from SD card (power supply required, [see above](#SD-Card))
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- load full image thru stock web interface (untested)
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- flash programmer
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- somehow get into stock bootloader
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## Flash memory layout
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| Offset | Size | Description |
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|:-|:-|:-|
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| 0x00000000 | 0x00040000 (262144 bytes) | bootloader |
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| 0x00040000 | 0x00010000 (65536 bytes) | env |
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| 0x00050000 | 0x00200000 (2097152 bytes) | kernel |
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| 0x00250000 | 0x00500000 (5242880 bytes) | rootfs |
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| 0x00750000 | 0x000B0000 (720896 bytes) | rootfs_data |
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# Summary
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- [X] WiFi works
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- [X] Video tested/streamed
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- [X] Day/night works (IRCUT and IRLED)
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- [X] MIC works
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- [X] Speaker works
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- [ ] PTZ/Motors (GPIO pins found/accessible, driver untested)
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# TODO
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- somehow patch/adapt camhi-motor.ko, so make it works on this board. |