Added user setup for Pico Explorer Base. (#2397)

Co-authored-by: Anders Årstrand <anders.arstrand@Neonode.com>

User_Setup_Select.h

@@ -116,6 +116,8 @@
 //#include <User_Setups/Setup136_LilyGo_TTV.h>       // Setup file for ESP32 and Lilygo TTV ST7789 SPI bus TFT  135x240
 //#include <User_Setups/Setup137_LilyGo_TDisplay_RP2040.h>  // Setup file for Lilygo T-Display RP2040 (ST7789 on SPI bus with 135x240 TFT)
 
+//#include <User_Setups/Setup138_Pico_Explorer_Base_RP2040_ST7789.h> // Setup file for Pico Explorer Base by Pimoroni for RP2040 (ST7789 on SPI bus with 240x240 TFT)
+
 //#include <User_Setups/Setup200_GC9A01.h>           // Setup file for ESP32 and GC9A01 240 x 240 TFT
 
 //#include <User_Setups/Setup201_WT32_SC01.h>        // Setup file for ESP32 based WT32_SC01 from Seeed

User_Setups/Setup138_Pico_Explorer_Base_RP2040_ST7789.h

+// Pico Explorer Base by Pimoroni (RP2040) (ST7789 on SPI bus with 240x240 TFT)
+#define USER_SETUP_ID 138
+
+#define ST7789_DRIVER     // Configure all registers
+
+#define TFT_WIDTH  240
+#define TFT_HEIGHT 240
+
+#define CGRAM_OFFSET      // Library will add offsets required
+
+// For Pico Explorer Base (PR2040)
+#define TFT_CS 17   // Chip Select pin
+#define TFT_DC 16   // Data Command control pin 
+#define TFT_RST -1  // No Reset pin
+#define TFT_MOSI 19
+#define TFT_SCLK 18
+
+
+#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
+
+#define SMOOTH_FONT
+
+#define SPI_FREQUENCY       40000000
+#define SPI_READ_FREQUENCY  20000000
+#define SPI_TOUCH_FREQUENCY  2500000