rp2: Allow disabling USB via MICROPY_HW_ENABLE_USBDEV config.

Previously, setting MICROPY_HW_ENABLE_USBDEV to 0 caused build errors.  The
change affects the nrf and samd ports as well, so MICROPY_HW_ENABLE_USBDEV
had to be explicitly enabled there.

The configuration options MICROPY_HW_ENABLE_USBDEV and
MICROPY_HW_ENABLE_UART_REPL are independent, and can be enabled or disabled
by a board.

Signed-off-by: Damien George <damien@micropython.org>

ports/nrf/mpconfigport.h

@@ -141,6 +141,7 @@
 #define MICROPY_CAN_OVERRIDE_BUILTINS (1)
 #define MICROPY_USE_INTERNAL_ERRNO  (1)
 #if MICROPY_HW_USB_CDC_1200BPS_TOUCH
+#define MICROPY_HW_ENABLE_USBDEV    (1)
 #define MICROPY_ENABLE_SCHEDULER    (1)
 #define MICROPY_SCHEDULER_STATIC_NODES (1)
 #endif

ports/rp2/mpconfigport.h

@@ -36,8 +36,12 @@
 
 // Board and hardware specific configuration
 #define MICROPY_HW_MCU_NAME                     "RP2040"
+#ifndef MICROPY_HW_ENABLE_UART_REPL
 #define MICROPY_HW_ENABLE_UART_REPL             (0) // useful if there is no USB
+#endif
+#ifndef MICROPY_HW_ENABLE_USBDEV
 #define MICROPY_HW_ENABLE_USBDEV                (1)
+#endif
 
 #if MICROPY_HW_ENABLE_USBDEV
 // Enable USB-CDC serial port

ports/rp2/usbd.c

@@ -24,6 +24,10 @@
  * THE SOFTWARE.
  */
 
+#include "py/mpconfig.h"
+
+#if MICROPY_HW_ENABLE_USBDEV
+
 #include "mp_usbd.h"
 #include "string.h"
 #include "tusb.h"
@@ -42,3 +46,5 @@ void mp_usbd_port_get_serial_number(char *serial_buf) {
     }
     serial_buf[hexlen] = 0;
 }
+
+#endif

ports/samd/mpconfigport.h

@@ -60,6 +60,7 @@
 #define MICROPY_ENABLE_SCHEDULER            (1)
 #define MICROPY_SCHEDULER_STATIC_NODES      (1)
 #define MICROPY_MODULE_WEAK_LINKS           (1)
+#define MICROPY_HW_ENABLE_USBDEV            (1)
 #define MICROPY_HW_USB_CDC_1200BPS_TOUCH    (1)
 
 // Control over Python builtins

shared/tinyusb/mp_cdc_common.c

@@ -28,7 +28,7 @@
 #include "py/mphal.h"
 #include "modmachine.h"
 
-#if MICROPY_HW_USB_CDC_1200BPS_TOUCH
+#if MICROPY_HW_USB_CDC_1200BPS_TOUCH && MICROPY_HW_ENABLE_USBDEV
 
 #include "tusb.h"
 

shared/tinyusb/mp_usbd.c

@@ -26,6 +26,10 @@
 
 #include <stdlib.h>
 
+#include "py/mpconfig.h"
+
+#if MICROPY_HW_ENABLE_USBDEV
+
 #ifndef NO_QSTR
 #include "tusb.h" // TinyUSB is not avaiable when running the string preprocessor
 #include "device/usbd.h"
@@ -35,3 +39,5 @@
 void usbd_task(void) {
     tud_task_ext(0, false);
 }
+
+#endif

shared/tinyusb/mp_usbd_descriptor.c

@@ -25,7 +25,10 @@
  * THE SOFTWARE.
  */
 
-#include "mpconfigport.h"
+#include "py/mpconfig.h"
+
+#if MICROPY_HW_ENABLE_USBDEV
+
 #include "tusb.h"
 #include "mp_usbd.h"
 #include "mp_usbd_internal.h"
@@ -126,3 +129,5 @@ const uint8_t *tud_descriptor_configuration_cb(uint8_t index) {
     (void)index;
     return mp_usbd_desc_cfg_static;
 }
+
+#endif