Add further docs for C62. Fix typos

Author: Andrej

dev_status.md

@@ -37,7 +37,8 @@ OpenRTX is currently in active development. There will be bugs as we prioritize
 | Lilygo T-TWR plus              |  ✅  |   ✅     |    ✅     | ❌  | ✅   |     ❌      | ✅  | [on GitHub](https://github.com/OpenRTX/OpenRTX/issues?q=is:open+label:T-TWR%20Plus,ALL)|
 | Radtel RT-890                  |  ✅  |   🟡     |    ✅     | ❌  | N/A |     ❌      | N/A  | [on GitHub](https://github.com/OpenRTX/OpenRTX/issues?q=is:open+label:RT-890,ALL)    |
 | Talkpod A36plus                |  ✅  |   ✅     |    ✅     | ❌  | 🟡   |     ✅     | N/A  | [on GitHub](https://github.com/OpenRTX/OpenRTX/issues?q=is:open+label:A36plus,ALL)    |
-| Connect Systems CS7000-M17     |  ✅  |   ✅     |    ✅     | ❌  | N/A  |     ✅     | ✅   | [on GitHub](https://github.com/OpenRTX/OpenRTX/issues?q=is:open+label:ALL)            |
+| Retevis C62                    |  ✅  |   ✅     |    ✅     | ❌  | ❌   |     ❌     | N/A  | [on GitHub](https://github.com/OpenRTX/OpenRTX/issues?q=is:open+label:retevis-c62,ALL)    |
+| Connect Systems CS7000-M17     |  ✅  |   ✅     |    ✅     | ❌  | N/A  |     ✅     | ✅   | [on GitHub](https://github.com/OpenRTX/OpenRTX/issues?q=is:open+label:CS7000,ALL)            |
 | Connect Systems CS7000-M17 Plus|  ✅  |   ✅     |    ✅     | ❌  | N/A  |     ✅     | ❌   | [on GitHub](https://github.com/OpenRTX/OpenRTX/issues?q=is:open+label:CS7000-Plus,ALL)|
 
 ### Modes
@@ -53,9 +54,12 @@ OpenRTX is currently in active development. There will be bugs as we prioritize
 | Lilygo T-TWR plus              |  ✅   |  ✅    |   ❌    |   ❌    |   ❌    |   ❌     |  N/A   |  N/A   |   N/A   |
 | Radtel RT-890                  |  ❌   |  ❌    |   ❌    |   ❌    |   ❌    |   ❌     |   ❌    |  ❌     |   ❌    |
 | Talkpod A36plus                |  ✅   |  ✅    |   ❌    |   ❌    |   ❌    |   ❌     |   ❌    |  ❌     |   ❌    |
+| Retevis C62                    |  ✅   |  ❌    |   ❌    |   ❌    |   ❌    |   ❌     |   ❌    |  ❌     |   ❌    |
 | Connect Systems CS7000-M17     |  ✅   |  ✅    |   ✅    |   ✅   |   ❌     |   ❌     |   ❌   |   ❌    |   ❌     |
 | Connect Systems CS7000-M17 Plus|  ✅   |  ✅    |   ✅    |   ✅   |   ❌     |   ❌     |   ❌   |   ❌    |   ❌     |
 
+
+### Notes:
 * _Tytera MD-9600 support is not yet complete, and as a result pre-made builds are not available._
 * _Similarly, Radtel RT-890 support is not yet complete either, and same as above, pre-made builds are not available._
 * _Semi-regular pre-made builds for the Talkpod A36plus can be found [here.](https://github.com/VR2TE/Talkpod-A36plus-Firmware/tree/main/A36plus%20MAX/OpenRTX)_

hardware/c62.md

@@ -2,6 +2,8 @@
 
 ## Development Status
 
+There is a functional port for OpenRTX currently in development. Right now, the main functions (boot, display, keys) function as expected. However, there has been a significant challenge in getting the DSP coprocessor to cooperate to allow for audio in/out, including for analog FM. For now, There is a workaround for FM RX (and only RX) that involves an ET3157 analog switch that is present on the board; it allows for the BK4819's "earphone output" to be piped directly to the speaker.
+
 **⚠️ Important Note: The Retevis C62 is not yet ready to run M17 protocol. While the hardware is capable of supporting M17, firmware development is currently in progress.**
 
 The C62 was identified as a candidate for M17 development after discovering an undocumented DMR-like digital mode in its factory firmware, which prompted investigation into its suitability for open-source protocol implementation.
@@ -13,8 +15,8 @@ The C62 was identified as a candidate for M17 development after discovering an u
 
 ### General Specifications
 * **Power Output**: 5W
-* **Frequency Bands**: Dual Band (UV - specific ranges TBD)
-* **Display**: TBD
+* **Frequency Bands**: Dual Band (136-174, 400-520MHz. Chip technically capable of 18-1300MHz; feasible range TBD)
+* **Display**: ST7735R display controller
 * **Battery**: TBD
 * **AI Noise Reduction**: Built-in AI noise reduction technology
 
@@ -130,4 +132,4 @@ The C62 development effort welcomes community contributions, particularly in:
 
 *Hardware analysis and development information from:*
 - *GitHub Repository: https://github.com/JKI757/C62_Teardown*
-- *Official Product Information: https://www.retevis.com/retevis-c62-5-w-long-range-uv-dual-band-ai-noise-reducation-business-radio-us*
+- *Official Product Information: https://www.retevis.com/retevis-c62-5-w-long-range-uv-dual-band-ai-noise-reducation-business-radio-us*

hardware/hardware.md

@@ -16,7 +16,7 @@ This table provides a glance on the underlying hardware of each of the supported
 | T-TWR Plus     | ESP32-S3    |   SA868S     |  AT1846S |       SH1106       |              optional microSD               | L76K       |
 | CS7000-M17     | STM32F405VG |   HR-C6000   | SKY72310 |       HX8302A      |              25Q128FV SPI flash             | MC-1010-2RE|
 | CS7000-M17 Plus| STM32H743VI |   HR-C6000   | SKY72310 |       HX8302A      |              25Q128FV SPI flash             | MC-1010-2RE|
-| C62            | CSK6011B    |   -          |  BK4819  |       TBD          |              TBD                            | -          |
+| C62            | CSK6011B    |   -          |  BK4819  |       ST7735R      |              PY25Q40HB SPI flash            | -          |
 
 ### Device documentation