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README clarification

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Vlastimil Slinták 2025-12-31 12:20:43 +01:00
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README.md
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@ -2,8 +2,7 @@
A complete open-source hardware and firmware project for a modern IP packet
radio modem operating on the 70 cm amateur band (420–450 MHz). Compatible with
the NPR (New Packet Radio)
[protocol by F4HDK](https://hackaday.io/project/164092-npr-new-packet-radio),
the NPR [New Packet Radio](https://hackaday.io/project/164092-npr-new-packet-radio),
but with custom hardware and improvements for easier DIY assembly.
## What is NPR70?
@ -25,7 +24,6 @@ It is a fork/derivative of the
[original NPR project by F4HDK](https://hackaday.io/project/164092-npr-new-packet-radio),
but with new custom hardware, simplified design, and refactored/cleaned firmware.
## Who is this for?
- Licensed amateur radio operators interested in high-speed IP digital modes
@ -83,11 +81,29 @@ files are in the [`pcb/`](pcb/) directory.
- Build firmware by running `make` in the `src/` directory.
- Firmware binary is in the `src/BUILD/NPR70.hex` file
- Flash firmware to the STM32 MCU using an SWD programmer
`pyocd load -t stm32l432kc BUILD/NPR70.hex`
3. **Configuration**: Adjust radio parameters (frequency, bandwidth,
master/client mode, IP addresses) as described in the
[original NPR documentation](https://cdn.hackaday.io/files/1640927020512128/NPR70_introduction_EN_v3.6.pdf)
4. **Connect**: Plug in Ethernet and power, connect antenna, and start experimenting
Basic settings to check (more details in the original NPR documentation):
* `display config`: show current configuration
* `set <param> <value>`: store value to the given parameter
* `save`: saves current configuration into the EEPROM
* `radio on`/`radio off`: turn RF on or off
* `reboot`: reboot the FW
You have to set your callsign, frequency and modulation. Rest of the parameters
is up to you and your setup.
```
set callsign AB1CDE
set frequency 434.200
set modulation 22
```
## Documentation and References
- [Original NPR project by F4HDK](https://hackaday.io/project/164092-npr-new-packet-radio)