board/circuit-express: Add usbnsh configuration

boards/arm/samd2l2/circuit-express/configs/usbnsh/defconfig

@@ -0,0 +1,66 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_DISABLE_POSIX_TIMERS is not set
+# CONFIG_NSH_DISABLEBG is not set
+# CONFIG_NSH_DISABLESCRIPT is not set
+# CONFIG_NSH_DISABLE_CMP is not set
+# CONFIG_NSH_DISABLE_DD is not set
+# CONFIG_NSH_DISABLE_EXEC is not set
+# CONFIG_NSH_DISABLE_EXIT is not set
+# CONFIG_NSH_DISABLE_GET is not set
+# CONFIG_NSH_DISABLE_HEXDUMP is not set
+# CONFIG_NSH_DISABLE_IFCONFIG is not set
+# CONFIG_NSH_DISABLE_ITEF is not set
+# CONFIG_NSH_DISABLE_LOOPS is not set
+# CONFIG_NSH_DISABLE_LOSETUP is not set
+# CONFIG_NSH_DISABLE_MB is not set
+# CONFIG_NSH_DISABLE_MKRD is not set
+# CONFIG_NSH_DISABLE_PS is not set
+# CONFIG_NSH_DISABLE_PUT is not set
+# CONFIG_NSH_DISABLE_SEMICOLON is not set
+# CONFIG_NSH_DISABLE_WGET is not set
+# CONFIG_NSH_DISABLE_XD is not set
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="circuit-express"
+CONFIG_ARCH_BOARD_CIRCUIT_EXPRESS=y
+CONFIG_ARCH_CHIP="samd2l2"
+CONFIG_ARCH_CHIP_SAMD21G18A=y
+CONFIG_ARCH_CHIP_SAMD2X=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARD_LOOPSPERMSEC=3410
+CONFIG_BUILTIN=y
+CONFIG_CDCACM=y
+CONFIG_DEBUG_FULLOPT=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DEFAULT_SMALL=y
+CONFIG_MAX_TASKS=16
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_USBCONSOLE=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_PTHREAD_STACK_DEFAULT=1536
+CONFIG_RAM_SIZE=32768
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SAMD2L2_SERCOM4=y
+CONFIG_SAMD2L2_USB=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_STACK_COLORATION=y
+CONFIG_START_DAY=21
+CONFIG_START_MONTH=6
+CONFIG_START_YEAR=2015
+CONFIG_SYSTEM_NSH=y
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=1536
+CONFIG_USART4_RXBUFSIZE=64
+CONFIG_USART4_SERIAL_CONSOLE=y
+CONFIG_USART4_TXBUFSIZE=64
+CONFIG_USBDEV=y
+CONFIG_USERMAIN_STACKSIZE=1536
+CONFIG_USER_ENTRYPOINT="nsh_main"

boards/arm/samd2l2/circuit-express/include/board.h

@@ -349,6 +349,20 @@
 
 #define BOARD_SERCOM4_FREQUENCY      BOARD_GCLK0_FREQUENCY
 
+/* USB definitions **********************************************************/
+
+/* This is the source clock generator for the GCLK_USB clock
+ */
+
+#define BOARD_USB_GCLKGEN            0
+#define BOARD_USB_FREQUENCY          BOARD_GCLK0_FREQUENCY
+
+/* default USB Pad calibration (not used yet by USB driver) */
+
+#define BOARD_USB_PADCAL_P       29
+#define BOARD_USB_PADCAL_N       5
+#define BOARD_USB_PADCAL_TRIM    3
+
 /* LED definitions **********************************************************/
 
 /* There are 2 LEDs on board the Adafruit Circuit Express board in addition

boards/arm/samd2l2/circuit-express/src/Makefile

@@ -34,4 +34,8 @@ ifeq ($(CONFIG_LIB_BOARDCTL),y)
 CSRCS += sam_appinit.c
 endif
 
+ifeq ($(CONFIG_USBDEV),y)
+CSRCS += sam_usb.c
+endif
+
 include $(TOPDIR)/boards/Board.mk

boards/arm/samd2l2/circuit-express/src/sam_usb.c

@@ -0,0 +1,87 @@
+/****************************************************************************
+ * boards/arm/samd2l2/circuit-express/src/sam_usb.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <sched.h>
+#include <errno.h>
+#include <assert.h>
+#include <debug.h>
+
+#include <nuttx/usb/usbdev.h>
+#include <nuttx/usb/usbhost.h>
+#include <nuttx/usb/usbdev_trace.h>
+
+#include "debug.h"
+#include "chip.h"
+#include "sam_port.h"
+#include "saml_periphclks.h"
+#include "circuit_express.h"
+
+#if defined(CONFIG_SAMD2L2_USB)
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: sam_usbinitialize
+ *
+ * Description:
+ *   Called from sam_boot very early in initialization to setup
+ *   USB-related GPIO pins for the Circuit Express board.
+ *
+ * USB Ports
+ *   The SAML21 features USB device and host:
+ *
+ *
+ ****************************************************************************/
+
+void weak_function sam_usbinitialize(void)
+{
+}
+
+/****************************************************************************
+ * Name:  sam_usbsuspend
+ *
+ * Description:
+ *   Board logic must provide the sam_usbsuspend logic if the USBDEV driver
+ *   is used.
+ *   This function is called whenever the USB enters or leaves suspend mode.
+ *   This is an opportunity for the board logic to shutdown clocks, power,
+ *   etc. while the USB is suspended.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_USBDEV
+void sam_usb_suspend(FAR struct usbdev_s *dev, bool resume)
+{
+  uinfo("board: resume: %d\n", resume);
+}
+#endif
+
+#endif /* CONFIG_SAMDL_USB */