SDK 2.2.1-develop, enable MIDI, add IRQ slots

Fixes #3189

Increase the shared IRQ handler slots by 2 to account for the RP2350
doorbells taking up 2 of them (since we want to allow users to have their
own doorbell handlers).

Move to the latest -develop version of the SDK since we need to rebuild
the SDK anyway.

Enable TinyUSB MIDI support.  Right now there's not a library for it. but
with this folks like @madias123 or others who have asked for it can start
the work.

Author: earlephilhower

cores/rp2040/RP2040Support.h

@@ -72,7 +72,6 @@ class _MFIFO {
 
     void registerCore() {
 #ifndef __FREERTOS
-        multicore_doorbell_clear_current_core(_doorbell);
         uint32_t irq = multicore_doorbell_irq_num(_doorbell);
         irq_add_shared_handler(irq, _irq, 128);
         irq_set_enabled(irq, true);

include/rp2040/pico_base/pico/version.h

@@ -13,7 +13,7 @@
 
 #define PICO_SDK_VERSION_MAJOR    2
 #define PICO_SDK_VERSION_MINOR    2
-#define PICO_SDK_VERSION_REVISION 0
-#define PICO_SDK_VERSION_STRING   "2.2.0"
+#define PICO_SDK_VERSION_REVISION 1
+#define PICO_SDK_VERSION_STRING   "2.2.1-develop"
 
 #endif

include/rp2350/pico_base/pico/version.h

@@ -13,7 +13,7 @@
 
 #define PICO_SDK_VERSION_MAJOR    2
 #define PICO_SDK_VERSION_MINOR    2
-#define PICO_SDK_VERSION_REVISION 0
-#define PICO_SDK_VERSION_STRING   "2.2.0"
+#define PICO_SDK_VERSION_REVISION 1
+#define PICO_SDK_VERSION_STRING   "2.2.1-develop"
 
 #endif

include/tusb_config.h

@@ -73,7 +73,7 @@
 #define CFG_TUD_HID              (2)
 #define CFG_TUD_CDC              (1)
 #define CFG_TUD_MSC              (1)
-#define CFG_TUD_MIDI             (0)
+#define CFG_TUD_MIDI             (1)
 #define CFG_TUD_VENDOR           (0)
 
 #define CFG_TUD_CDC_RX_BUFSIZE  (256)
@@ -84,6 +84,10 @@
 // HID buffer size Should be sufficient to hold ID (if any) + Data
 #define CFG_TUD_HID_EP_BUFSIZE  (64)
 
+// MIDI
+#define CFG_TUD_MIDI_RX_BUFSIZE (64)
+#define CFG_TUD_MIDI_TX_BUFSIZE (64)
+
 #ifdef __cplusplus
  }
 #endif

lib/platform_def.txt

@@ -70,6 +70,7 @@
 -DPICO_RP2040_USB_DEVICE_UFRAME_FIX=1
 -DPICO_USE_BLOCKED_RAM=0
 -DPICO_XOSC_STARTUP_DELAY_MULTIPLIER=64
+-DPICO_MAX_SHARED_IRQ_HANDLERS=6
 
 -DPICO_CYW43_ARCH_HEADER=stdint.h
 -DCYW43_TASK_STACK_SIZE=1024