RE: mini project: PICO-PI programmable Lab Switch - 4: Your Homework - extra pins

shabaz — Fri, 21 Oct 2022 19:12:25 GMT

I built your code. (the version that uses UART from the previous blog), it works well : )

For anyone interested in doing it with CLion (I didn't use VS Code), the steps that worked for me are (some of these steps can be replaced with environmental variable changes if desired):

0. Install CLion and the ARM toolchain and the Pico SDK. The steps are here: /products/raspberry-pi/b/blog/posts/using-clion-for-easier-coding-with-pi-pico-and-c-c

1.Create a Pico development folder, e.g. C:\development\pico

2. In that folder place the pico programmable lab switch source code, i.e. unzip the freertos_scpi_switch.zip so the path to its contents is C:\development\pico\freertos_scpi_switch

3. Download FreeRTOS, I downloaded the full FreeRTOSv202112.00.zip from https://www.freertos.org/a00104.html

4. Unzip it. I did it in th pico folder too, although you could put it outside that folder if you wish to use it with other microcontrollers too. My path was C:\development\pico\FreeRTOSv202112.00

5. Download the scpi-parser source zip file from https://github.com/j123b567/scpi-parser/releases

6. I extracted the scpi-parser zip file to the pico library (you could extract it elsewhere if you wish to use it with other microcontrollers too). My path was C:\development\pico\scpi-parser-2.2

7. In the freertos_scpi_switch\CMakeLists.txt file, I did search-replace to change the text $ENV{SCPI_LIB_PATH} with ../scpi-parser-2.2/libscpi

8. In the C:\development\freertos_scpi_switch\FreeRTOS_Kernel_import.cmake file I added a line near the top of the file:

set(FREERTOS_KERNEL_PATH "C:/development/pico/FreeRTOSv202112.00/FreeRTOS/Source")

9. I opened the freertos_scpi_switch folder project using CLion. As part of its Open Project Wizard, it brings up a window where one line needs to be typed in this box:

The line to type is PICO_SDK_PATH=c:\development\pico\pico-sdk (this assumed you have previously installed the SDK there as discussed in the blog in step 0).

10. Click the hammer icon to build the code. CLion created a folder and the .uf2 suffix executable was available in C:\development\pico\freertos_scpi_switch\cmake-build-debug

11. The executable can be uploaded onto the Pico by first holding down the BOOTSEL button and plugging in the USB connection into the PC, and then dropping the .uf2 suffix file into the USB drive letter that appears. There are a couple of steps with CLion to enable PicoProbe if that's preferred. I can write up those steps if anyone wants help with that.

RE: mini project: PICO-PI programmable Lab Switch - 4: Your Homework - extra pins

genebren — Thu, 20 Oct 2022 20:45:13 GMT

Very well done. This was an excellent series of blogs.

RE: mini project: PICO-PI programmable Lab Switch - 4: Your Homework - extra pins

dougw — Thu, 20 Oct 2022 20:13:38 GMT

I works for me when somebody else does my homework for me. [emoticon:fbd079a1c4f748c5a234faee215de9cc]