Other RP2040 boards • Re: SPI not working

Code:

// We must use hardware SPI, a minimum of 3 GPIO pins is needed.// Typical setup for the RP2040 is ://// Display SDO/MISO  to RP2040 pin D0 (or leave disconnected if not reading TFT)// Display LED       to RP2040 pin 3V3 or 5V// Display SCK       to RP2040 pin D2// Display SDI/MOSI  to RP2040 pin D3// Display DC (RS/AO)to RP2040 pin D18 (can use another pin if desired)// Display RESET     to RP2040 pin D19 (can use another pin if desired)// Display CS        to RP2040 pin D20 (can use another pin if desired, or GND, see below)// Display GND       to RP2040 pin GND (0V)// Display VCC       to RP2040 5V or 3.3V (5v if display has a 5V to 3.3V regulator fitted)//// The DC (Data Command) pin may be labelled AO or RS (Register Select)//// With some displays such as the ILI9341 the TFT CS pin can be connected to GND if no more// SPI devices (e.g. an SD Card) are connected, in this case comment out the #define TFT_CS// line below so it is NOT defined. Other displays such at the ST7735 require the TFT CS pin// to be toggled during setup, so in these cases the TFT_CS line must be defined and connected.// For the Pico use these #define lines#define TFT_MISO  0#define TFT_MOSI  3#define TFT_SCLK  2#define TFT_CS   20  // Chip select control pin#define TFT_DC   18  // Data Command control pin#define TFT_RST  19  // Reset pin (could connect to Arduino RESET pin)//#define TFT_BL     // LED back-light#define TOUCH_CS 21     // Chip select pin (T_CS) of touch screen// ##################################################################################//// Section 3. Define the fonts that are to be used here//// ##################################################################################// Comment out the #defines below with // to stop that font being loaded// The ESP8366 and ESP32 have plenty of memory so commenting out fonts is not// normally necessary. If all fonts are loaded the extra FLASH space required is// about 17Kbytes. To save FLASH space only enable the fonts you need!#define LOAD_GLCD   // Font 1. Original Adafruit 8 pixel font needs ~1820 bytes in FLASH#define LOAD_FONT2  // Font 2. Small 16 pixel high font, needs ~3534 bytes in FLASH, 96 characters#define LOAD_FONT4  // Font 4. Medium 26 pixel high font, needs ~5848 bytes in FLASH, 96 characters#define LOAD_FONT6  // Font 6. Large 48 pixel font, needs ~2666 bytes in FLASH, only characters 1234567890:-.apm#define LOAD_FONT7  // Font 7. 7 segment 48 pixel font, needs ~2438 bytes in FLASH, only characters 1234567890:-.#define LOAD_FONT8  // Font 8. Large 75 pixel font needs ~3256 bytes in FLASH, only characters 1234567890:-.//#define LOAD_FONT8N // Font 8. Alternative to Font 8 above, slightly narrower, so 3 digits fit a 160 pixel TFT#define LOAD_GFXFF  // FreeFonts. Include access to the 48 Adafruit_GFX free fonts FF1 to FF48 and custom fonts// Comment out the #define below to stop the SPIFFS filing system and smooth font code being loaded// this will save ~20kbytes of FLASH#define SMOOTH_FONT// ##################################################################################//// Section 4. Other options//// ##################################################################################// For the RP2040 processor define the SPI port channel used, default is 0// #define TFT_SPI_PORT 1 // Set to 0 if SPI0 pins are used, or 1 if spi1 pins used// Define the SPI clock frequency, this affects the graphics rendering speed. Too// fast and the TFT driver will not keep up and display corruption appears.// With an ILI9341 display 40MHz works OK, 80MHz sometimes fails// With a ST7735 display more than 27MHz may not work (spurious pixels and lines)// With an ILI9163 display 27 MHz works OK.// #define SPI_FREQUENCY   1000000// #define SPI_FREQUENCY   5000000// #define SPI_FREQUENCY  10000000// #define SPI_FREQUENCY  20000000// #define SPI_FREQUENCY  32000000 #define SPI_FREQUENCY  70000000// Optional reduced SPI frequency for reading TFT#define SPI_READ_FREQUENCY  20000000// The XPT2046 requires a lower SPI clock rate of 2.5MHz so we define that here:#define SPI_TOUCH_FREQUENCY  2500000