Add Pimoroni Tiny2040 (#1672)

Fixes #1604.  Supports 2MB and 8MB revs

README.md

@@ -50,6 +50,8 @@ Read the [Contributing Guide](https://github.com/earlephilhower/arduino-pico/blo
 * Neko Systems BL2040 Mini
 * nullbits Bit-C PRO
 * Pimoroni PGA2040
+* Pimoroni Plasma2040
+* Pimoroni Tiny2040
 * Seeed Indicator RP2040
 * Seeed XIAO RP2040
 * Silicognition RP2040-Shim

package/package_pico_index.template.json

@@ -152,6 +152,9 @@
                   {
                      "name": "Pimoroni Plasma2040"
                   },
+                  {
+                     "name": "Pimoroni Tiny2040"
+                  },
                   {
                      "name": "Silicognition RP2040-Shim"
                   },

tools/makeboards.py

@@ -215,6 +215,9 @@ def MakeBoard(name, vendor_name, product_name, vid, pid, pwr, boarddefine, flash
         BuildFlashMenu(name, 4*1024*1024, [0, 3*1024*1024, 2*1024*1024])
         BuildFlashMenu(name, 8*1024*1024, [0, 7*1024*1024, 4*1024*1024, 2*1024*1024])
         BuildFlashMenu(name, 16*1024*1024, [0, 15*1024*1024, 14*1024*1024, 12*1024*1024, 8*1024*1024, 4*1024*1024, 2*1024*1024])
+    elif name == "pimoroni_tiny2040":
+        BuildFlashMenu(name, 2*1024*1024, fssizelist)
+        BuildFlashMenu(name, 8*1024*1024, [0, 7*1024*1024, 4*1024*1024, 2*1024*1024])
     else:
         BuildFlashMenu(name, flashsizemb * 1024 * 1024, fssizelist)
     BuildFreq(name)
@@ -408,6 +411,7 @@ MakeBoard("nullbits_bit_c_pro", "nullbits", "Bit-C PRO", "0x2e8a", "0x6e61", 500
 # Pimoroni
 MakeBoard("pimoroni_pga2040", "Pimoroni", "PGA2040", "0x2e8a", "0x1008", 250, "PIMORONI_PGA2040", 8, "boot2_w25q64jv_4_padded_checksum")
 MakeBoard("pimoroni_plasma2040", "Pimoroni", "Plasma2040", "0x2e8a", "0x100a", 500, "PIMORONI_PLASMA2040", 2, "boot2_w25q080_2_padded_checksum")
+MakeBoard("pimoroni_tiny2040", "Pimoroni", "Tiny2040", "0x2e8a", "0x100a", 500, "PIMORONI_TINY2040", 2, "boot2_w25q64jv_4_padded_checksum")
 
 # Silicognition
 MakeBoard("silicognition_rp2040_shim", "Silicognition", "RP2040-Shim", "0x1209", "0xf502", 500, "SILICOGNITION_RP2040_SHIM", 4, "boot2_generic_03h_4_padded_checksum")

variants/pimoroni_tiny2040/pins_arduino.h

+#pragma once
+
+// This is a bare board with no real predefined pins, so use generic
+
+#include "../generic/pins_arduino.h"