# SDR-PICO V2

![rp2350_board](images/oled.jpg "rp2350_board")

## Schematics

![schematics](schematics/baliseHF_pico2350.png "schematics")

## PCB
![PCB_QRP20](images/PCB_QRP20.png "PCB_QRP20")

## RPI PICO ZERO PINOUT

![rp2350_lcd](images/rp2350_lcd.png "rp2350_lcd")

![rp2350_lcd_pinout](images/rp2350_lcd_pinout.png "rp2350_lcd_pinout")


## Raspberry Pi Pico RP2350 Specifications

### Core Features
- **Microcontroller**: RP2350, designed by Raspberry Pi
- **Processor**: Dual-core ARM Cortex-M33 running at up to 150 MHz (with optional RISC-V core depending on variant)
- **Memory**: Up to 520 KB of SRAM and external QSPI Flash support (typically 2 MB or more depending on board)
- **Security**: Arm TrustZone support and enhanced security features
- **USB**: USB 1.1 with device and host support

### GPIO and Connectivity
- **GPIO Pins**: Up to 30 multi-function GPIO pins, including:
  - SPI, I2C, UART, ADC, PWM (enhanced capabilities compared to RP2040)
- **Programmable I/O (PIO)**: 3 PIO blocks with multiple state machines for advanced custom peripherals
- **Analog**: Improved ADC performance
- **Debugging**: SWD debug interface available

## testing  SDR-PICO V2 board

## Configuration in putty (115200 bauds)

It is now necessary to access the configuration menu. 
To do this, hold down the push button “bp menu” while connecting the USB connector to the Raspberry Pi Pico Zero. 
At this point, a serial communication port such as COMx should appear on Windows, or /dev/ttyACM0 on Linux.


```console

>help
Available commands
Set transmission frequency             : freq 7040100
Set offset value                       : offset -200
Set callsign                           : call F4XYZ
Set locator                            : loc JN07
Set mode  wspr rtty ft8 hell cw iambic : mode wspr
Set band 160,80m,60m,40m,30m,20m,freq  : band 40m
Set modulo in minutes                  : minute 10
Set follow mode                        : follow 1
Set cw words per minute                : wpm 15
Set iambic mode                        : iambic B
Set transmission power (dBm)           : dbm 10
Set email address                      : mail f4xyz at example.com
Set gps baud rate                      : gpsbaud 9600
Scan I2C bus                           : scan
Show nmea frame                        : nmea 1
Save current configuration to EEPROM   : save
Display current configuration          : show
Reset all parameters to default        : raz
Restart RPI pico                       : restart
Show this help message                 : help
Exit menu                              : exit
```
The minimum first setup for a quick WSPR test is:

```console

>raz             Initialize parameters
>band 60m        Set band
>call F4XYZ      Enter callsign
>loc JN07        Enter locator
>mode wspr       Select transmission mode
>minute 2        Transmit every two minutes
>dbm 10          Set power level information for WSPR
>save            Save configuration
>show            Display configuration

>show
Current configuration :
  freq           : 5288700 Hz
  offset         : -200
  call           : F4GOH
  locator        : JN07
  dbm            : 10 dBm
  mode           : WSPR
  band           : 60m
  wpm            : 16
  iambic mode    : A
  mail           : none@example.com
  minute         : 2 min
  Gps baud rate  : 9600
  Nmea debug  is : OFF
  Follow  is     : OFF
> exit

```

![rp2350_60m](images/band60m.png "rp2350_60m")

To enable iambic mode and vand mode the 1st time is :

```console
>raz
>mode iambic
Mode set to: IAMBIC
>band 60m
>wpm 15
>iambic B
>save
>exit
>
```

![rp2350_cw](images/board_cw.jpg "rp2350_cw")

---

## Usefull links for wspr reports

- [WSPRnet (site officiel)](https://wsprnet.org/drupal/wsprnet/map)
- [WSPR Live Map](https://www.wsprnet.org/drupal/wsprnet/map)
- [WSPR Database Query](https://wsprnet.org/drupal/wsprnet/spots)
- [PSKreporter (inclut WSPR et autres modes)](https://pskreporter.info/pskmap.html)
- [WSPR Rocks](https://wsprocks.com/)
- [QRP Labs WSPR viewer](https://www.qrp-labs.com/ultimate3/wsprview.html)

## Usefull links for wspr

- [Code correcteur — Wikipédia](https://fr.wikipedia.org/wiki/Code_correcteur)
- [WSPR Coding Process (PDF)](http://www.g4jnt.com/wspr_coding_process.pdf)

## Usefull links for filter design

- [Tonnesoftware SVC Download](http://tonnesoftware.com/svcdownload.html)
- [Mini Ring Core Calculator – Software Informer](https://mini-ring-core-calculator.software.informer.com/1.2/)




