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Posted to commits@nuttx.apache.org by ac...@apache.org on 2021/05/16 14:36:01 UTC
[incubator-nuttx] branch master updated (a81166a -> 4a2d4c1)
This is an automated email from the ASF dual-hosted git repository.
acassis pushed a change to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git.
from a81166a Update libcxx to 12.0.0 release
new 2972e70 board: Add support for Adafruit Circuit Express
new 4a2d4c1 board/circuit-express: Add usbnsh configuration
The 2 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails. The revisions
listed as "add" were already present in the repository and have only
been added to this reference.
Summary of changes:
boards/Kconfig | 12 +
boards/arm/samd2l2/circuit-express/Kconfig | 9 +
.../samd2l2/circuit-express/configs/nsh/defconfig | 64 ++++
.../circuit-express/configs/usbnsh/defconfig | 66 ++++
boards/arm/samd2l2/circuit-express/include/board.h | 410 +++++++++++++++++++++
.../arm/samd2l2/circuit-express/scripts/Make.defs | 63 ++++
.../arm/samd2l2/circuit-express/scripts/flash.ld | 111 ++++++
boards/arm/samd2l2/circuit-express/src/Makefile | 41 +++
.../samd2l2/circuit-express/src/circuit_express.h | 102 +++++
.../arm/samd2l2/circuit-express/src/sam_appinit.c | 71 ++++
.../arm/samd2l2/circuit-express/src/sam_autoleds.c | 138 +++++++
boards/arm/samd2l2/circuit-express/src/sam_boot.c | 86 +++++
.../arm/samd2l2/circuit-express/src/sam_bringup.c | 60 +++
boards/arm/samd2l2/circuit-express/src/sam_usb.c | 87 +++++
14 files changed, 1320 insertions(+)
create mode 100644 boards/arm/samd2l2/circuit-express/Kconfig
create mode 100644 boards/arm/samd2l2/circuit-express/configs/nsh/defconfig
create mode 100644 boards/arm/samd2l2/circuit-express/configs/usbnsh/defconfig
create mode 100644 boards/arm/samd2l2/circuit-express/include/board.h
create mode 100644 boards/arm/samd2l2/circuit-express/scripts/Make.defs
create mode 100644 boards/arm/samd2l2/circuit-express/scripts/flash.ld
create mode 100644 boards/arm/samd2l2/circuit-express/src/Makefile
create mode 100644 boards/arm/samd2l2/circuit-express/src/circuit_express.h
create mode 100644 boards/arm/samd2l2/circuit-express/src/sam_appinit.c
create mode 100644 boards/arm/samd2l2/circuit-express/src/sam_autoleds.c
create mode 100644 boards/arm/samd2l2/circuit-express/src/sam_boot.c
create mode 100644 boards/arm/samd2l2/circuit-express/src/sam_bringup.c
create mode 100644 boards/arm/samd2l2/circuit-express/src/sam_usb.c
[incubator-nuttx] 01/02: board: Add support for Adafruit Circuit
Express
Posted by ac...@apache.org.
This is an automated email from the ASF dual-hosted git repository.
acassis pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
commit 2972e7015ec6a3748eedd807b902580387d0fd86
Author: Brennan Ashton <ba...@brennanashton.com>
AuthorDate: Sat May 15 22:34:10 2021 -0700
board: Add support for Adafruit Circuit Express
---
boards/Kconfig | 12 +
boards/arm/samd2l2/circuit-express/Kconfig | 9 +
.../samd2l2/circuit-express/configs/nsh/defconfig | 64 ++++
boards/arm/samd2l2/circuit-express/include/board.h | 396 +++++++++++++++++++++
.../arm/samd2l2/circuit-express/scripts/Make.defs | 63 ++++
.../arm/samd2l2/circuit-express/scripts/flash.ld | 111 ++++++
boards/arm/samd2l2/circuit-express/src/Makefile | 37 ++
.../samd2l2/circuit-express/src/circuit_express.h | 102 ++++++
.../arm/samd2l2/circuit-express/src/sam_appinit.c | 71 ++++
.../arm/samd2l2/circuit-express/src/sam_autoleds.c | 138 +++++++
boards/arm/samd2l2/circuit-express/src/sam_boot.c | 86 +++++
.../arm/samd2l2/circuit-express/src/sam_bringup.c | 60 ++++
12 files changed, 1149 insertions(+)
diff --git a/boards/Kconfig b/boards/Kconfig
index 643ccaa..de620b1 100644
--- a/boards/Kconfig
+++ b/boards/Kconfig
@@ -92,6 +92,14 @@ config ARCH_BOARD_C5471EVM
NuttX runs on the ARM core and is built with a GNU arm-nuttx-elf toolchain*.
This port is complete and verified.
+config ARCH_BOARD_CIRCUIT_EXPRESS
+ bool "Adafruit Circuit Express"
+ depends on ARCH_CHIP_SAMD21G18A
+ select ARCH_HAVE_LEDS
+ ---help---
+ This options selects the Adafruit Circuit Express board featuring the Atmel
+ ATSAMD21 MCU.
+
config ARCH_BOARD_CLICKER2_STM32
bool "Mikroe Clicker2 STM32"
depends on ARCH_CHIP_STM32F407VG
@@ -2261,6 +2269,7 @@ config ARCH_BOARD
default "bambino-200e" if ARCH_BOARD_BAMBINO_200E
default "bl602evb" if ARCH_BOARD_BL602EVB
default "c5471evm" if ARCH_BOARD_C5471EVM
+ default "circuit-express" if ARCH_BOARD_CIRCUIT_EXPRESS
default "clicker2-stm32" if ARCH_BOARD_CLICKER2_STM32
default "cloudctrl" if ARCH_BOARD_CLOUDCTRL
default "demo9s12ne64" if ARCH_BOARD_DEMOS92S12NEC64
@@ -2713,6 +2722,9 @@ endif
if ARCH_BOARD_ARDUINO_M0
source "boards/arm/samd2l2/arduino-m0/Kconfig"
endif
+if ARCH_BOARD_CIRCUIT_EXPRESS
+source "boards/arm/samd2l2/circuit-express/Kconfig"
+endif
if ARCH_BOARD_FLIPNCLICK_SAM3X
source "boards/arm/sam34/flipnclick-sam3x/Kconfig"
endif
diff --git a/boards/arm/samd2l2/circuit-express/Kconfig b/boards/arm/samd2l2/circuit-express/Kconfig
new file mode 100644
index 0000000..4570cae
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/Kconfig
@@ -0,0 +1,9 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+if ARCH_BOARD_CIRCUIT_EXPRESS
+
+endif
+
diff --git a/boards/arm/samd2l2/circuit-express/configs/nsh/defconfig b/boards/arm/samd2l2/circuit-express/configs/nsh/defconfig
new file mode 100644
index 0000000..9efe3d5
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/configs/nsh/defconfig
@@ -0,0 +1,64 @@
+#
+# 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_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_DEBUG_ASSERTIONS=y
+CONFIG_DEBUG_ERROR=y
+CONFIG_DEBUG_FEATURES=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DEBUG_WARN=y
+CONFIG_DEFAULT_SMALL=y
+CONFIG_MAX_TASKS=16
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_PTHREAD_STACK_DEFAULT=1536
+CONFIG_RAM_SIZE=32768
+CONFIG_RAM_START=0x20000000
+CONFIG_RR_INTERVAL=200
+CONFIG_SAMD2L2_SERCOM4=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_USERMAIN_STACKSIZE=1536
+CONFIG_USER_ENTRYPOINT="nsh_main"
diff --git a/boards/arm/samd2l2/circuit-express/include/board.h b/boards/arm/samd2l2/circuit-express/include/board.h
new file mode 100644
index 0000000..884c305
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/include/board.h
@@ -0,0 +1,396 @@
+/****************************************************************************
+ * boards/arm/samd2l2/circuit-express/include/board.h
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_ARM_SAMD2L2_CIRCUIT_EXPRESS_INCLUDE_BOARD_H
+#define __BOARDS_ARM_SAMD2L2_CIRCUIT_EXPRESS_INCLUDE_BOARD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef __ASSEMBLY__
+# include <stdint.h>
+# ifdef CONFIG_SAMD2L2_GPIOIRQ
+# include <arch/irq.h>
+# endif
+#endif
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Clocking *****************************************************************/
+
+/* Overview
+ *
+ * OSC8M Output = 8MHz
+ * `- GCLK1 Input = 8MHz Prescaler = 1 output = 8MHz
+ * `- DFLL Input = 8MHz Multiplier = 6 output = 48MHz
+ * `- GCLK0 Input = 48MHz Prescaler = 1 output = 48MHz
+ * `- PM Input = 48Mhz CPU divider = 1 CPU frequency = 48MHz
+ * APBA divider = 1 APBA frequency = 48MHz
+ * APBB divider = 1 APBB frequency = 48MHz
+ * APBC divider = 1 APBC frequency = 48MHz
+ *
+ */
+
+/* XOSC Configuration -- Not available
+ *
+ * BOARD_XOSC_ENABLE - Boolean (defined / not defined)
+ * BOARD_XOSC_FREQUENCY - In Hz
+ * BOARD_XOSC_STARTUPTIME - See SYSCTRL_XOSC_STARTUP_* definitions
+ * BOARD_XOSC_ISCRYSTAL - Boolean (defined / not defined)
+ * BOARD_XOSC_AMPGC - Boolean (defined / not defined)
+ * BOARD_XOSC_ONDEMAND - Boolean (defined / not defined)
+ * BOARD_XOSC_RUNINSTANDBY - Boolean (defined / not defined)
+ */
+
+#undef BOARD_XOSC_ENABLE
+#define BOARD_XOSC_FREQUENCY 12000000UL
+#define BOARD_XOSC_STARTUPTIME SYSCTRL_XOSC_STARTUP_1S
+#define BOARD_XOSC_ISCRYSTAL 1
+#define BOARD_XOSC_AMPGC 1
+#define BOARD_XOSC_ONDEMAND 1
+#undef BOARD_XOSC_RUNINSTANDBY
+
+/* XOSC32 Configuration -- Not used
+ *
+ * BOARD_XOSC32K_ENABLE - Boolean (defined / not defined)
+ * BOARD_XOSC32K_FREQUENCY - In Hz
+ * BOARD_XOSC32K_STARTUPTIME - See SYSCTRL_XOSC32K_STARTUP_* definitions
+ * BOARD_XOSC32K_ISCRYSTAL - Boolean (defined / not defined)
+ * BOARD_XOSC32K_AAMPEN - Boolean (defined / not defined)
+ * BOARD_XOSC32K_EN1KHZ - Boolean (defined / not defined)
+ * BOARD_XOSC32K_EN32KHZ - Boolean (defined / not defined)
+ * BOARD_XOSC32K_ONDEMAND - Boolean (defined / not defined)
+ * BOARD_XOSC32K_RUNINSTANDBY - Boolean (defined / not defined)
+ */
+
+#undef BOARD_XOSC32K_ENABLE
+#define BOARD_XOSC32K_FREQUENCY 32768 /* 32.768KHz XTAL */
+#define BOARD_XOSC32K_STARTUPTIME SYSCTRL_XOSC32K_STARTUP_2S
+#define BOARD_XOSC32K_ISCRYSTAL 1
+#define BOARD_XOSC32K_AAMPEN 1
+#undef BOARD_XOSC32K_EN1KHZ
+#define BOARD_XOSC32K_EN32KHZ 1
+#define BOARD_XOSC32K_ONDEMAND 1
+#undef BOARD_XOSC32K_RUNINSTANDBY
+
+/* OSC32 Configuration -- not used
+ *
+ * BOARD_OSC32K_ENABLE - Boolean (defined / not defined)
+ * BOARD_OSC32K_FREQUENCY - In Hz
+ * BOARD_OSC32K_STARTUPTIME - See SYSCTRL_OSC32K_STARTUP_* definitions
+ * BOARD_OSC32K_EN1KHZ - Boolean (defined / not defined)
+ * BOARD_OSC32K_EN32KHZ - Boolean (defined / not defined)
+ * BOARD_OSC32K_ONDEMAND - Boolean (defined / not defined)
+ * BOARD_OSC32K_RUNINSTANDBY - Boolean (defined / not defined)
+ */
+
+#undef BOARD_OSC32K_ENABLE
+#define BOARD_OSC32K_FREQUENCY 32768 /* 32.768kHz internal oscillator */
+#define BOARD_OSC32K_STARTUPTIME SYSCTRL_OSC32K_STARTUP_4MS
+#define BOARD_OSC32K_EN1KHZ 1
+#define BOARD_OSC32K_EN32KHZ 1
+#define BOARD_OSC32K_ONDEMAND 1
+#undef BOARD_OSC32K_RUNINSTANDBY
+
+/* OSC8M Configuration -- always enabled
+ *
+ * BOARD_OSC8M_PRESCALER - See SYSCTRL_OSC8M_PRESC_DIV* definitions
+ * BOARD_OSC8M_ONDEMAND - Boolean (defined / not defined)
+ * BOARD_OSC8M_RUNINSTANDBY - Boolean (defined / not defined)
+ */
+
+#define BOARD_OSC8M_PRESCALER SYSCTRL_OSC8M_PRESC_DIV1
+#define BOARD_OSC8M_ONDEMAND 1
+#undef BOARD_OSC8M_RUNINSTANDBY
+
+#define BOARD_OSC8M_FREQUENCY 8000000 /* 8MHz high-accuracy internal oscillator */
+
+/* OSCULP32K Configuration -- not used. */
+
+#define BOARD_OSCULP32K_FREQUENCY 32000 /* 32kHz ultra-low-power internal oscillator */
+
+/* Digital Frequency Locked Loop configuration. In closed-loop mode, the
+ * DFLL output frequency (Fdfll) is given by:
+ *
+ * Fdfll = DFLLmul * Frefclk
+ * = 6 * 8000000 = 48MHz
+ *
+ * Where the reference clock is Generic Clock Channel 0 output of GLCK1.
+ * GCLCK1 provides OSC8M, undivided.
+ *
+ * When operating in open-loop mode, the output frequency of the DFLL will
+ * be determined by the values written to the DFLL Coarse Value bit group
+ * and the DFLL Fine Value bit group in the DFLL Value register.
+ *
+ * BOARD_DFLL_OPENLOOP - Boolean (defined / not defined)
+ * BOARD_DFLL_TRACKAFTERFINELOCK - Boolean (defined / not defined)
+ * BOARD_DFLL_KEEPLOCKONWAKEUP - Boolean (defined / not defined)
+ * BOARD_DFLL_ENABLECHILLCYCLE - Boolean (defined / not defined)
+ * BOARD_DFLL_QUICKLOCK - Boolean (defined / not defined)
+ * BOARD_DFLL_ONDEMAND - Boolean (defined / not defined)
+ *
+ * Closed loop mode only:
+ * BOARD_DFLL_GCLKGEN - GCLK index
+ * BOARD_DFLL_MULTIPLIER - Value
+ * BOARD_DFLL_MAXCOARSESTEP - Value
+ * BOARD_DFLL_MAXFINESTEP - Value
+ *
+ * BOARD_DFLL_FREQUENCY - The resulting frequency
+ */
+
+#define BOARD_DFLL_ENABLE 1
+#define BOARD_DFLL_OPENLOOP 1
+#undef BOARD_DFLL_ONDEMAND
+#undef BOARD_DFLL_RUNINSTANDBY
+
+/* DFLL closed loop mode configuration */
+
+#define BOARD_DFLL_SRCGCLKGEN 1
+#define BOARD_DFLL_MULTIPLIER 6
+#define BOARD_DFLL_QUICKLOCK 1
+#define BOARD_DFLL_TRACKAFTERFINELOCK 1
+#define BOARD_DFLL_KEEPLOCKONWAKEUP 1
+#define BOARD_DFLL_ENABLECHILLCYCLE 1
+#define BOARD_DFLL_MAXCOARSESTEP (0x1f / 4)
+#define BOARD_DFLL_MAXFINESTEP (0xff / 4)
+
+#define BOARD_DFLL_FREQUENCY (48000000)
+
+/* GCLK Configuration
+ *
+ * Global enable/disable.
+ *
+ * BOARD_GCLK_ENABLE - Boolean (defined / not defined)
+ *
+ * For n=1-7:
+ * BOARD_GCLKn_ENABLE - Boolean (defined / not defined)
+ *
+ * For n=0-8:
+ * BOARD_GCLKn_RUN_IN_STANDBY - Boolean (defined / not defined)
+ * BOARD_GCLKn_CLOCK_SOURCE - See GCLK_GENCTRL_SRC_* definitions
+ * BOARD_GCLKn_PRESCALER - Value
+ * BOARD_GCLKn_OUTPUT_ENABLE - Boolean (defined / not defined)
+ */
+
+#define BOARD_GCLK_ENABLE 1
+
+/* GCLK generator 0 (Main Clock) - Source is the DFLL */
+
+#undef BOARD_GCLK0_RUN_IN_STANDBY
+#define BOARD_GCLK0_CLOCK_SOURCE GCLK_GENCTRL_SRC_DFLL48M
+#define BOARD_GCLK0_PRESCALER 1
+#undef BOARD_GCLK0_OUTPUT_ENABLE
+#define BOARD_GCLK0_FREQUENCY (BOARD_DFLL_FREQUENCY / BOARD_GCLK0_PRESCALER)
+
+/* Configure GCLK generator 1 - Drives the DFLL */
+
+#define BOARD_GCLK1_ENABLE 1
+#undef BOARD_GCLK1_RUN_IN_STANDBY
+#define BOARD_GCLK1_CLOCK_SOURCE GCLK_GENCTRL_SRC_OSC8M
+#define BOARD_GCLK1_PRESCALER 1
+#undef BOARD_GCLK1_OUTPUT_ENABLE
+#define BOARD_GCLK1_FREQUENCY (BOARD_OSC8M_FREQUENCY / BOARD_GCLK1_PRESCALER)
+
+/* Configure GCLK generator 2 (RTC) */
+
+#undef BOARD_GCLK2_ENABLE
+#undef BOARD_GCLK2_RUN_IN_STANDBY
+#define BOARD_GCLK2_CLOCK_SOURCE GCLK_GENCTRL_SRC_OSC32K
+#define BOARD_GCLK2_PRESCALER 32
+#undef BOARD_GCLK2_OUTPUT_ENABLE
+#define BOARD_GCLK2_FREQUENCY (BOARD_OSC8M_FREQUENCY / BOARD_GCLK2_PRESCALER)
+
+/* Configure GCLK generator 3 */
+
+#undef BOARD_GCLK3_ENABLE
+#undef BOARD_GCLK3_RUN_IN_STANDBY
+#define BOARD_GCLK3_CLOCK_SOURCE GCLK_GENCTRL_SRC_OSC8M
+#define BOARD_GCLK3_PRESCALER 1
+#undef BOARD_GCLK3_OUTPUT_ENABLE
+#define BOARD_GCLK3_FREQUENCY (BOARD_OSC8M_FREQUENCY / BOARD_GCLK3_PRESCALER)
+
+/* Configure GCLK generator 4 */
+
+#undef BOARD_GCLK4_ENABLE
+#undef BOARD_GCLK4_RUN_IN_STANDBY
+#define BOARD_GCLK4_CLOCK_SOURCE GCLK_GENCTRL_SRC_OSC8M
+#define BOARD_GCLK4_PRESCALER 1
+#undef BOARD_GCLK4_OUTPUT_ENABLE
+#define BOARD_GCLK4_FREQUENCY (BOARD_OSC8M_FREQUENCY / BOARD_GCLK4_PRESCALER)
+
+/* Configure GCLK generator 5 */
+
+#undef BOARD_GCLK5_ENABLE
+#undef BOARD_GCLK5_RUN_IN_STANDBY
+#define BOARD_GCLK5_CLOCK_SOURCE GCLK_GENCTRL_SRC_OSC8M
+#define BOARD_GCLK5_PRESCALER 1
+#undef BOARD_GCLK5_OUTPUT_ENABLE
+#define BOARD_GCLK5_FREQUENCY (BOARD_OSC8M_FREQUENCY / BOARD_GCLK5_PRESCALER)
+
+/* Configure GCLK generator 6 */
+
+#undef BOARD_GCLK6_ENABLE
+#undef BOARD_GCLK6_RUN_IN_STANDBY
+#define BOARD_GCLK6_CLOCK_SOURCE GCLK_GENCTRL_SRC_OSC8M
+#define BOARD_GCLK6_PRESCALER 1
+#undef BOARD_GCLK6_OUTPUT_ENABLE
+#define BOARD_GCLK6_FREQUENCY (BOARD_OSC8M_FREQUENCY / BOARD_GCLK6_PRESCALER)
+
+/* Configure GCLK generator 7 */
+
+#undef BOARD_GCLK7_ENABLE
+#undef BOARD_GCLK7_RUN_IN_STANDBY
+#define BOARD_GCLK7_CLOCK_SOURCE GCLK_GENCTRL_SRC_OSC8M
+#define BOARD_GCLK7_PRESCALER 1
+#undef BOARD_GCLK7_OUTPUT_ENABLE
+#define BOARD_GCLK7_FREQUENCY (BOARD_OSC8M_FREQUENCY / BOARD_GCLK7_PRESCALER)
+
+/* The source of the main clock is always GCLK_MAIN. Also called GCLKGEN[0],
+ * this is the clock feeding the Power Manager.
+ * The Power Manager, in turn, generates main clock which is divided down to
+ * produce the CPU, AHB, and APB clocks.
+ *
+ * The main clock is initially OSC8M divided by 8.
+ */
+
+#define BOARD_GCLK_MAIN_FREQUENCY BOARD_GCLK0_FREQUENCY
+
+/* Main clock dividers
+ *
+ * BOARD_CPU_DIVIDER - See PM_CPUSEL_CPUDIV_* definitions
+ * BOARD_CPU_FRQUENCY - In Hz
+ * BOARD_CPU_FAILDECT - Boolean (defined / not defined)
+ * BOARD_APBA_DIVIDER - See M_APBASEL_APBADIV_* definitions
+ * BOARD_APBA_FRQUENCY - In Hz
+ * BOARD_APBB_DIVIDER - See M_APBBSEL_APBBDIV_* definitions
+ * BOARD_APBB_FRQUENCY - In Hz
+ * BOARD_APBC_DIVIDER - See M_APBCSEL_APBCDIV_* definitions
+ * BOARD_APBC_FRQUENCY - In Hz
+ */
+
+#define BOARD_CPU_FAILDECT 1
+#define BOARD_CPU_DIVIDER PM_CPUSEL_CPUDIV_1
+#define BOARD_APBA_DIVIDER PM_APBASEL_APBADIV_1
+#define BOARD_APBB_DIVIDER PM_APBBSEL_APBBDIV_1
+#define BOARD_APBC_DIVIDER PM_APBCSEL_APBCDIV_1
+
+/* Resulting frequencies */
+
+#define BOARD_MCK_FREQUENCY (BOARD_GCLK_MAIN_FREQUENCY)
+#define BOARD_CPU_FREQUENCY (BOARD_MCK_FREQUENCY)
+#define BOARD_PBA_FREQUENCY (BOARD_MCK_FREQUENCY)
+#define BOARD_PBB_FREQUENCY (BOARD_MCK_FREQUENCY)
+#define BOARD_PBC_FREQUENCY (BOARD_MCK_FREQUENCY)
+#define BOARD_PBD_FREQUENCY (BOARD_MCK_FREQUENCY)
+
+/* FLASH wait states
+ *
+ * Vdd Range Wait states Maximum Operating Frequency
+ * ------------- -------------- ---------------------------
+ * 1.62V to 2.7V 0 14 MHz
+ * 1 28 MHz
+ * 2 42 MHz
+ * 3 48 MHz
+ * 2.7V to 3.63V 0 24 MHz
+ * 1 48 MHz
+ */
+
+#if 0 /* REVISIT -- should not be necessary */
+# define BOARD_FLASH_WAITSTATES 1
+#else
+# define BOARD_FLASH_WAITSTATES 2
+#endif
+
+/* SERCOM definitions *******************************************************/
+
+/* This is the source clock generator for the GCLK_SERCOM_SLOW clock that is
+ * common to all SERCOM modules.
+ */
+
+#define BOARD_SERCOM05_SLOW_GCLKGEN 0
+
+/* SERCOM5 USART used to Serial Console
+ *
+ * PIN PORT SERCOM FUNCTION
+ * --- ------------------ -----------
+ * 7 PB08 SERCOM4 PAD0 USART TXD
+ * 8 PB09 SERCOM4 PAD1 USART RXD
+ */
+
+#define BOARD_SERCOM4_GCLKGEN 0
+#define BOARD_SERCOM4_SLOW_GCLKGEN BOARD_SERCOM05_SLOW_GCLKGEN
+#define BOARD_SERCOM4_MUXCONFIG (USART_CTRLA_RXPAD1 | USART_CTRLA_TXPAD0_1)
+#define BOARD_SERCOM4_PINMAP_PAD0 PORT_SERCOM4_PAD0_3 /* USART 4 TXD */
+#define BOARD_SERCOM4_PINMAP_PAD1 PORT_SERCOM4_PAD1_3 /* USART 4 RXD */
+#define BOARD_SERCOM4_PINMAP_PAD2 0
+#define BOARD_SERCOM4_PINMAP_PAD3 0
+
+#define BOARD_SERCOM4_FREQUENCY BOARD_GCLK0_FREQUENCY
+
+/* LED definitions **********************************************************/
+
+/* There are 2 LEDs on board the Adafruit Circuit Express board in addition
+ * to the neopixel LEDs.
+ * The power ON LED which is connected to the 3.3V rail.
+ * D13 which is an active high user status LED.
+ *
+ * This user LED is controlled by PA17.
+ */
+
+/* LED index values for use with board_userled() */
+
+#define BOARD_STATUS_LED 0
+#define BOARD_NLEDS 1
+
+/* LED bits for use with board_userled_all() */
+
+#define BOARD_STATUS LED_BIT (1 << BOARD_STATUS_LED)
+
+/* When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
+ * control the LED as defined below. Thus if the LED is statically on, NuttX
+ * has successfully booted and is, apparently, running normally.
+ * If the LED is flashing at approximately 2Hz, then a fatal error
+ * has been detected and the system has halted.
+ */
+
+#define LED_STARTED 0 /* STATUS LED=OFF */
+#define LED_HEAPALLOCATE 0 /* STATUS LED=OFF */
+#define LED_IRQSENABLED 0 /* STATUS LED=OFF */
+#define LED_STACKCREATED 1 /* STATUS LED=ON */
+#define LED_INIRQ 2 /* STATUS LED=no change */
+#define LED_SIGNAL 2 /* STATUS LED=no change */
+#define LED_ASSERTION 2 /* STATUS LED=no change */
+#define LED_PANIC 3 /* STATUS LED=flashing */
+
+/* Button definitions *******************************************************/
+
+/* Mechanical buttons:
+ *
+ * The Adafruit Circuit Express contains 2 mechanical buttons and a switch.
+ */
+
+#define NUM_BUTTONS 3
+
+#endif /* __BOARDS_ARM_SAMD2L2_CIRCUIT_EXPRESS_INCLUDE_BOARD_H */
diff --git a/boards/arm/samd2l2/circuit-express/scripts/Make.defs b/boards/arm/samd2l2/circuit-express/scripts/Make.defs
new file mode 100644
index 0000000..dca3c45
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/scripts/Make.defs
@@ -0,0 +1,63 @@
+############################################################################
+# boards/arm/samd2l2/circuit-express/scripts/Make.defs
+#
+# 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.
+#
+############################################################################
+
+include $(TOPDIR)/.config
+include $(TOPDIR)/tools/Config.mk
+include $(TOPDIR)/arch/arm/src/armv6-m/Toolchain.defs
+
+LDSCRIPT = flash.ld
+
+ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
+ ARCHSCRIPT = -T "${shell cygpath -w $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)}"
+else
+ ARCHSCRIPT = -T$(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
+endif
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+ ARCHOPTIMIZATION = -g
+endif
+
+ifneq ($(CONFIG_DEBUG_NOOPT),y)
+ ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions -fcheck-new -fno-rtti
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
+ARCHWARNINGSXX = -Wall -Wshadow -Wundef
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS := $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
+AFLAGS := $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+ LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+ LDFLAGS += -g
+endif
diff --git a/boards/arm/samd2l2/circuit-express/scripts/flash.ld b/boards/arm/samd2l2/circuit-express/scripts/flash.ld
new file mode 100644
index 0000000..04c873d
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/scripts/flash.ld
@@ -0,0 +1,111 @@
+/****************************************************************************
+ * boards/arm/samd2l2/circuit-express/scripts/flash.ld
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/* The ATSAMD21G18A has 256KB of FLASH beginning at address 0x0000:0000 and
+ * 32KB of SRAM beginning at address 0x2000:0000
+ */
+
+MEMORY
+{
+ flash (rx) : ORIGIN = 0x00000000, LENGTH = 256K
+ sram (rwx) : ORIGIN = 0x20000000, LENGTH = 32K
+}
+
+OUTPUT_ARCH(arm)
+EXTERN(_vectors)
+ENTRY(_stext)
+
+SECTIONS
+{
+ .text : {
+ _stext = ABSOLUTE(.);
+ *(.vectors)
+ *(.text .text.*)
+ *(.fixup)
+ *(.gnu.warning)
+ *(.rodata .rodata.*)
+ *(.gnu.linkonce.t.*)
+ *(.glue_7)
+ *(.glue_7t)
+ *(.got)
+ *(.gcc_except_table)
+ *(.gnu.linkonce.r.*)
+ _etext = ABSOLUTE(.);
+ } > flash
+
+ .init_section : {
+ _sinit = ABSOLUTE(.);
+ *(.init_array .init_array.*)
+ _einit = ABSOLUTE(.);
+ } > flash
+
+ .ARM.extab : {
+ *(.ARM.extab*)
+ } >flash
+
+ .ARM.exidx : {
+ __exidx_start = ABSOLUTE(.);
+ *(.ARM.exidx*)
+ __exidx_end = ABSOLUTE(.);
+ } >flash
+
+ .data : {
+ _sdata = ABSOLUTE(.);
+ *(.data .data.*)
+ *(.gnu.linkonce.d.*)
+ CONSTRUCTORS
+ . = ALIGN(4);
+ _edata = ABSOLUTE(.);
+ } > sram AT > flash
+
+ _eronly = LOADADDR(.data);
+
+ .ramfunc ALIGN(4): {
+ _sramfuncs = ABSOLUTE(.);
+ *(.ramfunc .ramfunc.*)
+ _eramfuncs = ABSOLUTE(.);
+ } > sram AT > flash
+
+ _framfuncs = LOADADDR(.ramfunc);
+
+ .bss : {
+ _sbss = ABSOLUTE(.);
+ *(.bss .bss.*)
+ *(.gnu.linkonce.b.*)
+ *(COMMON)
+ . = ALIGN(4);
+ _ebss = ABSOLUTE(.);
+ } > sram
+
+ /* Stabs debugging sections. */
+
+ .stab 0 : { *(.stab) }
+ .stabstr 0 : { *(.stabstr) }
+ .stab.excl 0 : { *(.stab.excl) }
+ .stab.exclstr 0 : { *(.stab.exclstr) }
+ .stab.index 0 : { *(.stab.index) }
+ .stab.indexstr 0 : { *(.stab.indexstr) }
+ .comment 0 : { *(.comment) }
+ .debug_abbrev 0 : { *(.debug_abbrev) }
+ .debug_info 0 : { *(.debug_info) }
+ .debug_line 0 : { *(.debug_line) }
+ .debug_pubnames 0 : { *(.debug_pubnames) }
+ .debug_aranges 0 : { *(.debug_aranges) }
+}
diff --git a/boards/arm/samd2l2/circuit-express/src/Makefile b/boards/arm/samd2l2/circuit-express/src/Makefile
new file mode 100644
index 0000000..8024baf
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/src/Makefile
@@ -0,0 +1,37 @@
+############################################################################
+# boards/arm/samd2l2/circuit-express/src/Makefile
+#
+# 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.
+#
+############################################################################
+
+include $(TOPDIR)/Make.defs
+
+CSRCS = sam_boot.c sam_bringup.c
+
+ifeq ($(CONFIG_ARCH_LEDS),y)
+CSRCS += sam_autoleds.c
+endif
+
+ifeq ($(CONFIG_ARCH_BUTTONS),y)
+CSRCS += sam_buttons.c
+endif
+
+ifeq ($(CONFIG_LIB_BOARDCTL),y)
+CSRCS += sam_appinit.c
+endif
+
+include $(TOPDIR)/boards/Board.mk
diff --git a/boards/arm/samd2l2/circuit-express/src/circuit_express.h b/boards/arm/samd2l2/circuit-express/src/circuit_express.h
new file mode 100644
index 0000000..6967e17
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/src/circuit_express.h
@@ -0,0 +1,102 @@
+/****************************************************************************
+ * boards/arm/samd2l2/circuit-express/src/circuit_express.h
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_ARM_SAMD2L2_CIRCUIT_EXPRESS_SRC_CIRCUIT_EXPRESS_H
+#define __BOARDS_ARM_SAMD2L2_CIRCUIT_EXPRESS_SRC_CIRCUIT_EXPRESS_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+#include <stdint.h>
+
+#include <arch/irq.h>
+#include <nuttx/irq.h>
+
+#include "sam_config.h"
+#include "sam_pinmap.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* LEDs:
+ * There is a LED on board the Circuit Express board.
+ *
+ * This LED is controlled by PA17 and the LED can be activated by driving
+ * PA17 to High.
+ *
+ * When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
+ * control the LED as follows:
+ *
+ * SYMBOL Meaning LED
+ * ------------------- ----------------------- ------
+ * LED_STARTED NuttX has been started OFF
+ * LED_HEAPALLOCATE Heap has been allocated OFF
+ * LED_IRQSENABLED Interrupts enabled OFF
+ * LED_STACKCREATED Idle stack created ON
+ * LED_INIRQ In an interrupt N/C
+ * LED_SIGNAL In a signal handler N/C
+ * LED_ASSERTION An assertion failed N/C
+ * LED_PANIC The system has crashed FLASH
+ *
+ * Thus if the LED is statically on, NuttX has successfully booted and is,
+ * apparently, running normally. If the LED is flashing at approximately
+ * 2Hz, then a fatal error has been detected and the system has halted.
+ */
+
+#define PORT_STATUS_LED (PORT_OUTPUT | PORT_PULL_NONE | PORT_OUTPUT_SET | \
+ PORTA | PORT_PIN17)
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Functions Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: sam_bringup
+ *
+ * Description:
+ * Perform architecture-specific initialization
+ *
+ * CONFIG_BOARD_LATE_INITIALIZE=y :
+ * Called from board_late_initialize().
+ *
+ * CONFIG_BOARD_LATE_INITIALIZE=y && CONFIG_LIB_BOARDCTL=y :
+ * Called from the NSH library
+ *
+ ****************************************************************************/
+
+int sam_bringup(void);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_ARM_SAMD2L2_CIRCUIT_EXPRESS_SRC_CIRCUIT_EXPRESS_H */
diff --git a/boards/arm/samd2l2/circuit-express/src/sam_appinit.c b/boards/arm/samd2l2/circuit-express/src/sam_appinit.c
new file mode 100644
index 0000000..7730356
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/src/sam_appinit.c
@@ -0,0 +1,71 @@
+/****************************************************************************
+ * boards/arm/samd2l2/circuit-express/src/sam_appinit.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 <stdio.h>
+#include <syslog.h>
+
+#include <nuttx/board.h>
+
+#include "sam_config.h"
+#include "circuit_express.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_app_initialize
+ *
+ * Description:
+ * Perform application specific initialization. This function is never
+ * called directly from application code, but only indirectly via the
+ * (non-standard) boardctl() interface using the command BOARDIOC_INIT.
+ *
+ * Input Parameters:
+ * arg - The boardctl() argument is passed to the board_app_initialize()
+ * implementation without modification. The argument has no
+ * meaning to NuttX; the meaning of the argument is a contract
+ * between the board-specific initialization logic and the
+ * matching application logic. The value could be such things as a
+ * mode enumeration value, a set of DIP switch switch settings, a
+ * pointer to configuration data read from a file or serial FLASH,
+ * or whatever you would like to do with it. Every implementation
+ * should accept zero/NULL as a default configuration.
+ *
+ * Returned Value:
+ * Zero (OK) is returned on success; a negated errno value is returned on
+ * any failure to indicate the nature of the failure.
+ *
+ ****************************************************************************/
+
+int board_app_initialize(uintptr_t arg)
+{
+ return OK;
+}
diff --git a/boards/arm/samd2l2/circuit-express/src/sam_autoleds.c b/boards/arm/samd2l2/circuit-express/src/sam_autoleds.c
new file mode 100644
index 0000000..273a3e0
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/src/sam_autoleds.c
@@ -0,0 +1,138 @@
+/****************************************************************************
+ * boards/arm/samd2l2/circuit-express/src/sam_autoleds.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.
+ *
+ ****************************************************************************/
+
+/* There is a LED on board the Circuit Express board.
+ *
+ * When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
+ * control the LED as follows:
+ *
+ * SYMBOL Meaning LED
+ * ------------------- ----------------------- ------
+ * LED_STARTED NuttX has been started OFF
+ * LED_HEAPALLOCATE Heap has been allocated OFF
+ * LED_IRQSENABLED Interrupts enabled OFF
+ * LED_STACKCREATED Idle stack created ON
+ * LED_INIRQ In an interrupt** N/C
+ * LED_SIGNAL In a signal handler*** N/C
+ * LED_ASSERTION An assertion failed N/C
+ * LED_PANIC The system has crashed FLASH
+ *
+ * Thus if the LED is statically on, NuttX has successfully booted and is,
+ * apparently, running normally. If the LED is flashing at approximately
+ * 2Hz, then a fatal error has been detected and the system has halted.
+ */
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/board.h>
+#include <arch/board/board.h>
+
+#include "sam_port.h"
+#include "circuit_express.h"
+
+#ifdef CONFIG_ARCH_LEDS
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_autoled_initialize
+ ****************************************************************************/
+
+void board_autoled_initialize(void)
+{
+ sam_configport(PORT_STATUS_LED);
+}
+
+/****************************************************************************
+ * Name: board_autoled_on
+ ****************************************************************************/
+
+void board_autoled_on(int led)
+{
+ switch (led)
+ {
+ case 0: /* LED_STARTED: NuttX has been started STATUS LED=OFF
+ * LED_HEAPALLOCATE: Heap has been allocated STATUS LED=OFF
+ * LED_IRQSENABLED: Interrupts enabled STATUS LED=OFF
+ */
+
+ break; /* Leave ledstate == true to turn OFF */
+
+ default:
+ case 2: /* LED_INIRQ: In an interrupt STATUS LED=N/C
+ * LED_SIGNAL: In a signal handler STATUS LED=N/C
+ * LED_ASSERTION: An assertion failed STATUS LED=N/C
+ */
+
+ return; /* Return to leave STATUS LED unchanged */
+
+ case 3: /* LED_PANIC: The system has crashed STATUS LED=FLASH */
+ case 1: /* LED_STACKCREATED: Idle stack created STATUS LED=ON */
+ sam_portwrite(PORT_STATUS_LED, true);
+ break;
+ }
+}
+
+/****************************************************************************
+ * Name: board_autoled_off
+ ****************************************************************************/
+
+void board_autoled_off(int led)
+{
+ switch (led)
+ {
+ /* These should not happen and are ignored */
+
+ default:
+ case 0: /* LED_STARTED: NuttX has been started STATUS LED=OFF
+ * LED_HEAPALLOCATE: Heap has been allocated STATUS LED=OFF
+ * LED_IRQSENABLED: Interrupts enabled STATUS LED=OFF
+ */
+
+ case 1: /* LED_STACKCREATED: Idle stack created STATUS LED=ON */
+
+ /* These result in no-change */
+
+ case 2: /* LED_INIRQ: In an interrupt STATUS LED=N/C
+ * LED_SIGNAL: In a signal handler STATUS LED=N/C
+ * LED_ASSERTION: An assertion failed STATUS LED=N/C
+ */
+
+ return; /* Return to leave STATUS LED unchanged */
+
+ /* Turn STATUS LED off set driving the output high */
+
+ case 3: /* LED_PANIC: The system has crashed STATUS LED=FLASH */
+ sam_portwrite(PORT_STATUS_LED, false);
+ break;
+ }
+}
+
+#endif /* CONFIG_ARCH_LEDS */
diff --git a/boards/arm/samd2l2/circuit-express/src/sam_boot.c b/boards/arm/samd2l2/circuit-express/src/sam_boot.c
new file mode 100644
index 0000000..e45589e
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/src/sam_boot.c
@@ -0,0 +1,86 @@
+/****************************************************************************
+ * boards/arm/samd2l2/circuit-express/src/sam_boot.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 <debug.h>
+
+#include <nuttx/board.h>
+
+#include "sam_config.h"
+#include "circuit_express.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: sam_boardinitialize
+ *
+ * Description:
+ * All SAMD21 architectures must provide the following entry point.
+ * This entry point is called early in the initialization -- after all
+ * memory has been configured and mapped but before any devices have been
+ * initialized.
+ *
+ ****************************************************************************/
+
+void sam_boardinitialize(void)
+{
+ /* Configure on-board LEDs if LED support has been selected. */
+
+#ifdef CONFIG_ARCH_LEDS
+ board_autoled_initialize();
+#endif
+}
+
+/****************************************************************************
+ * Name: board_late_initialize
+ *
+ * Description:
+ * If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
+ * initialization call will be performed in the boot-up sequence to a
+ * function called board_late_initialize(). board_late_initialize() will be
+ * called immediately after up_intitialize() is called and just before the
+ * initial application is started. This additional initialization phase
+ * may be used, for example, to initialize board-specific device drivers.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_BOARD_LATE_INITIALIZE
+void board_late_initialize(void)
+{
+ /* Perform board initialization */
+
+ (void)sam_bringup();
+}
+#endif /* CONFIG_BOARD_LATE_INITIALIZE */
diff --git a/boards/arm/samd2l2/circuit-express/src/sam_bringup.c b/boards/arm/samd2l2/circuit-express/src/sam_bringup.c
new file mode 100644
index 0000000..7e281a9
--- /dev/null
+++ b/boards/arm/samd2l2/circuit-express/src/sam_bringup.c
@@ -0,0 +1,60 @@
+/****************************************************************************
+ * boards/arm/samd2l2/circuit-express/src/sam_bringup.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 <debug.h>
+
+#include <nuttx/board.h>
+
+#include "sam_config.h"
+#include "circuit_express.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: sam_bringup
+ *
+ * Description:
+ * Bring up board features
+ *
+ ****************************************************************************/
+
+int sam_bringup(void)
+{
+ int ret = OK;
+
+ return ret;
+}
[incubator-nuttx] 02/02: board/circuit-express: Add usbnsh
configuration
Posted by ac...@apache.org.
This is an automated email from the ASF dual-hosted git repository.
acassis pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
commit 4a2d4c1950e6c111daf1cf2932239547196a4d11
Author: Brennan Ashton <ba...@brennanashton.com>
AuthorDate: Sat May 15 23:45:48 2021 -0700
board/circuit-express: Add usbnsh configuration
---
.../circuit-express/configs/usbnsh/defconfig | 66 ++++++++++++++++
boards/arm/samd2l2/circuit-express/include/board.h | 14 ++++
boards/arm/samd2l2/circuit-express/src/Makefile | 4 +
boards/arm/samd2l2/circuit-express/src/sam_usb.c | 87 ++++++++++++++++++++++
4 files changed, 171 insertions(+)
diff --git a/boards/arm/samd2l2/circuit-express/configs/usbnsh/defconfig b/boards/arm/samd2l2/circuit-express/configs/usbnsh/defconfig
new file mode 100644
index 0000000..b612d05
--- /dev/null
+++ b/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"
diff --git a/boards/arm/samd2l2/circuit-express/include/board.h b/boards/arm/samd2l2/circuit-express/include/board.h
index 884c305..f55fc80 100644
--- a/boards/arm/samd2l2/circuit-express/include/board.h
+++ b/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
diff --git a/boards/arm/samd2l2/circuit-express/src/Makefile b/boards/arm/samd2l2/circuit-express/src/Makefile
index 8024baf..e210f70 100644
--- a/boards/arm/samd2l2/circuit-express/src/Makefile
+++ b/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
diff --git a/boards/arm/samd2l2/circuit-express/src/sam_usb.c b/boards/arm/samd2l2/circuit-express/src/sam_usb.c
new file mode 100644
index 0000000..eed0eca
--- /dev/null
+++ b/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 */