update readme to include max3421 support

.github/workflows/build_arm.yml

@@ -38,7 +38,6 @@ jobs:
         - 'lpc11 lpc13 lpc15 lpc17'
         - 'lpc51 lpc54'
         - 'mm32 msp432e4'
-        - 'nrf'
         - 'samd11 same5x saml2x'
         - 'stm32f2 stm32f3'
         - 'stm32l0 stm32u5 stm32wb'

.github/workflows/cmake_arm.yml

@@ -38,6 +38,7 @@ jobs:
           - 'lpc18 lpc40 lpc43'
           - 'lpc55'
           - 'mcx'
+          - 'nrf'
           - 'ra'
           - 'rp2040'
           - 'samd21'

README.rst

@@ -33,6 +33,7 @@ Supported MCUs
 The stack supports the following MCUs:
 
 - **Allwinner:** F1C100s/F1C200s
+- **Analog:** MAX3421e (aka Arduino usb host shield)
 - **Broadcom:** BCM2837, BCM2711
 - **Dialog:** DA1469x
 - **Espressif:** ESP32-S2, ESP32-S3
@@ -46,12 +47,13 @@ The stack supports the following MCUs:
   - iMX RT Series: RT10xx, RT11xx
   - Kinetis: KL25, K32L2
   - LPC Series: 11u, 13, 15, 17, 18, 40, 43, 51u, 54, 55
+  - MCX: N9x
 
 - **Raspberry Pi:** RP2040
 - **Renesas:**
 
-  - RX Series: 63N, 65N, 72N
-  - RA Series: RA4M1, RA4M3
+  - RX Series: 63n, 65n, 72n
+  - RA Series: 4m1, 4m3, 6m1, 6m5
 
 - **Silabs:** EFM32GG
 - **Sony:** CXD56
@@ -87,6 +89,8 @@ Host Stack
 
 - Human Interface Device (HID): Keyboard, Mouse, Generic
 - Mass Storage Class (MSC)
+- Communication Device Class: CDC-ACM
+- Vendor serial over USB: FTDI, CP210x
 - Hub with multiple-level support
 
 Similar to the Device Stack, if you have a special requirement, `usbh_app_driver_get_cb()` can be used to write your own class driver without modifying the stack.

hw/bsp/nrf/boards/feather_nrf52840_express/board.cmake

@@ -2,5 +2,8 @@ set(MCU_VARIANT nrf52840)
 #set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/../../linker/nrf52840_s140_v6.ld)
 set(LD_FILE_GNU ${NRFX_DIR}/mdk/nrf52840_xxaa.ld)
 
+# enable max3421 host driver for this board
+set(MAX3421_HOST 1)
+
 function(update_board TARGET)
 endfunction()

hw/bsp/nrf/boards/feather_nrf52840_express/board.mk

@@ -1,6 +1,9 @@
 MCU_VARIANT = nrf52840
 CFLAGS += -DNRF52840_XXAA
 
+# enable max3421 host driver for this board
+#MAX3421_HOST = 1
+
 # All source paths should be relative to the top level.
 LD_FILE = hw/bsp/nrf/linker/nrf52840_s140_v6.ld