tobiasvandyk / pico-mcu-from-raspberry-pi Goto Github PK

ST7789 LCD Macropad and TFT_eSP V2.5.43 fix:
Newer fixes: Use the 3files or 2files fix when using TFT_eSPI-Bodmer version 2.5.43 and also read this

Working2Files.zip
WorkingFiles3Files.zip

Old fix: To obtain a working Touch-Macropad for the the Waveshare IPS ST7789 LCD Pico Board 320x240 2.8 inch using Bodmer TFT_eSPI version 2.5.43 replace the file Processors/TFT_eSPI_RP2040.h with the same file from the previous version V2.5.34.

Choosing an LCD Touch Display: Of the 5 different LCD displays tested here, with the firmware as attached below, my favourite is the fast Waveshare 3.5 inch Type C 125MHz LCD display (even though it is not an IPS screen). It is available here.

Win11 24H2 new icon-bar with labels is good!
Old Win11 22H2:

New Win11 24H2:

July 2024: The Pico Evaluation Board was was modified by adding 3 connecting wires to convert the SDCard SDIO interface to a standard 1-bit SD interface. Remove pins GP5 GP18 GP19 from the Pico MCU male header. Then use the female Pico SMD header connections on the display board to connect the three wires as indicated below:

D3 CS GP22 stay as is
CLK GP5 disconnect from Pico and connect to GP10 SPI-1 CLK
CMD GP18 disconnect from Pico and connect to GP11 SPI-1 MOSI
D0 GP19 disconnect from Pico and connect to GP12 SPI-1 MISO

As an alternative implement SPI using PIO is also a solution - three sources that I know of:
(1) PioSpiTest.zip available here

(2) PIO-SPI the code is in the drivers/sdcard subdirectory - based on the comments here

(3) PIOSpi - Arduino spi driver over PIO to enable SPI over any GPIO

June 2024: From the description here, which
is also applicable to the Waveshare Eval Board, this can be made to have a functional SDCard using PIO SDIO:

You'll have to modify the PIO code:
You need SDIO_CLK offset from D0 by -14, which is 18 in mod32 arithmetic.
(19 + 18) % 32 = 5

In rp2040_sdio.pio you'll need to change this line:
.define PUBLIC SDIO_CLK_PIN_D0_OFFSET 30 ; (-2 in mod32 arithmetic) 
to 
.define PUBLIC SDIO_CLK_PIN_D0_OFFSET 18    ; (-14 in mod32 arithmetic)

Store a collection of PC editable macro definitions or music files or picture files on the SDCard and then have the Pico read it on power-up. This Waveshare IPS ST7789 LCD Pico Board 320x240 2.8 inch hardwired the LCD, Touch controller and SDCard to SPI-1 which makes the SDCard usable. But this Waveshare IPS ILI9488 Pico Evaluation Board Touch LCD 480x320 3.5 inch has the SDCard hardwired to SDIO pins which are not in the correct sequence for the current PIO drivers. The RPi SDK example is a wip (https://github.com/raspberrypi/pico-extras/tree/master/src/rp2_common/pico_sd_card)

Sep 2022: There is an implementation for the RP2040 here:
https://github.com/ZuluSCSI/ZuluSCSI-firmware/tree/main/lib/ZuluSCSI_platform_RP2040
Also see here:
https://forums.raspberrypi.com/viewtopic.php?t=337143
https://forums.raspberrypi.com/viewtopic.php?t=356274
https://forums.raspberrypi.com/viewtopic.php?t=361335&start=50

And this could be a solution: https://github.com/carlk3/no-OS-FatFS-SD-SDIO-SPI-RPi-Pico or https://github.com/carlk3/no-OS-FatFS-SD-SPI-RPi-Pico/tree/sdio - D0 to D3 are offset correctly (each D0 + 1) but SDIO-CLK is not at the required D0 - 2 offset.

There is a note that "For SDIO, data lines D0 - D3 must be on consecutive GPIOs, with D0 being the lowest numbered GPIO. Furthermore, the CMD signal must be on GPIO D0 GPIO number - 2, modulo 32. (This can be changed in the PIO code.)"

Similarly at Visrealm it notes: Six GPIOs for signal pins, and, optionally, another for CD (Card Detect). Four pins must be at fixed offsets from D0 (which itself can be anywhere):
CLK_gpio = D0_gpio - 2.
D1_gpio = D0_gpio + 1;
D2_gpio = D0_gpio + 2;
D3_gpio = D0_gpio + 3;

Great that you made this together. We have developed a Music player for people with Dementia based on Rpi's. However, the Rpi 's are difficult toe get. So we want to use the Pico in combinatie with the VS1053. ( wi use the adafruit music maker).
Will build test in next weeks.
Any recommendations?
Thanks
Olaf
Ps we are a foundation and have an open source approach.