This is an automated email from the ASF dual-hosted git repository.
xiaoxiang pushed a commit to branch master
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commit 94a62cb5a7999b333bd2eec026a159e2cf48c760
Author: Tyler Bennett <tbenn...@2g-eng.com>
AuthorDate: Tue May 6 08:07:32 2025 -0500
boards/stm32f0l0g0: Add Nucleo G0B1RE support
The Nucleo G0B1RE is a development board using the STM32G0B1RE MCU.
This commit adds a basic nsh over serial configuration.
---
boards/Kconfig | 14 ++
.../arm/stm32f0l0g0/nucleo-g0b1re/CMakeLists.txt | 23 +++
boards/arm/stm32f0l0g0/nucleo-g0b1re/Kconfig | 8 +
.../nucleo-g0b1re/configs/nsh/defconfig | 51 +++++
.../arm/stm32f0l0g0/nucleo-g0b1re/include/board.h | 210 +++++++++++++++++++++
.../stm32f0l0g0/nucleo-g0b1re/scripts/Make.defs | 41 ++++
.../stm32f0l0g0/nucleo-g0b1re/scripts/ld.script | 115 +++++++++++
.../stm32f0l0g0/nucleo-g0b1re/src/CMakeLists.txt | 41 ++++
boards/arm/stm32f0l0g0/nucleo-g0b1re/src/Make.defs | 43 +++++
.../stm32f0l0g0/nucleo-g0b1re/src/nucleo-g0b1re.h | 92 +++++++++
.../stm32f0l0g0/nucleo-g0b1re/src/stm32_appinit.c | 77 ++++++++
.../stm32f0l0g0/nucleo-g0b1re/src/stm32_autoleds.c | 81 ++++++++
.../arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_boot.c | 85 +++++++++
.../stm32f0l0g0/nucleo-g0b1re/src/stm32_bringup.c | 155 +++++++++++++++
.../stm32f0l0g0/nucleo-g0b1re/src/stm32_buttons.c | 118 ++++++++++++
15 files changed, 1154 insertions(+)
diff --git a/boards/Kconfig b/boards/Kconfig
index 17dbbd4d03..52dbfc2af7 100644
--- a/boards/Kconfig
+++ b/boards/Kconfig
@@ -1806,6 +1806,16 @@ config ARCH_BOARD_NUCLEO_G071RB
This is a minimal configuration that supports low-level test of
the
Nucleo G071RB in the NuttX source tree.
+config ARCH_BOARD_NUCLEO_G0B1RE
+ bool "STM32G0B1 Nucleo G0B1RE"
+ depends on ARCH_CHIP_STM32G0B1RE
+ select ARCH_HAVE_LEDS
+ select ARCH_HAVE_BUTTONS
+ select ARCH_HAVE_IRQBUTTONS
+ ---help---
+ This is a minimal configuration that supports low-level test of
the
+ Nucleo G0B1RE in the NuttX source tree.
+
config ARCH_BOARD_WEACT_STM32H743
bool "WeAct Studio STM32H743"
depends on ARCH_CHIP_STM32H743VI
@@ -3552,6 +3562,7 @@ config ARCH_BOARD
default "stm32g071b-disco" if ARCH_BOARD_STM32G071B_DISCO
default "nucleo-g070rb" if ARCH_BOARD_NUCLEO_G070RB
default "nucleo-g071rb" if ARCH_BOARD_NUCLEO_G071RB
+ default "nucleo-g0b1re" if ARCH_BOARD_NUCLEO_G0B1RE
default "weact-stm32h743" if ARCH_BOARD_WEACT_STM32H743
default "nucleo-h743zi" if ARCH_BOARD_NUCLEO_H743ZI
default "nucleo-h743zi2" if ARCH_BOARD_NUCLEO_H743ZI2
@@ -4216,6 +4227,9 @@ endif
if ARCH_BOARD_NUCLEO_G071RB
source "boards/arm/stm32f0l0g0/nucleo-g071rb/Kconfig"
endif
+if ARCH_BOARD_NUCLEO_G0B1RE
+source "boards/arm/stm32f0l0g0/nucleo-g0b1re/Kconfig"
+endif
if ARCH_BOARD_NUCLEO_L073RZ
source "boards/arm/stm32f0l0g0/nucleo-l073rz/Kconfig"
endif
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/CMakeLists.txt
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/CMakeLists.txt
new file mode 100644
index 0000000000..f161ea4448
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/CMakeLists.txt
@@ -0,0 +1,23 @@
+#
##############################################################################
+# boards/arm/stm32f0l0g0/nucleo-g0b1re/CMakeLists.txt
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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.
+#
+#
##############################################################################
+
+add_subdirectory(src)
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/Kconfig
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/Kconfig
new file mode 100644
index 0000000000..edfb735f24
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/Kconfig
@@ -0,0 +1,8 @@
+#
+# For a description of the syntax of this configuration file,
+# see the kconfig-language reference.
+#
+
+if ARCH_BOARD_NUCLEO_G0B1RE
+
+endif
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/configs/nsh/defconfig
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/configs/nsh/defconfig
new file mode 100644
index 0000000000..175461f04b
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/configs/nsh/defconfig
@@ -0,0 +1,51 @@
+#
+# 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_LIBC_LONG_LONG is not set
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_STM32F0G0L0_USE_LEGACY_PINMAP is not set
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="nucleo-g0b1re"
+CONFIG_ARCH_BOARD_NUCLEO_G0B1RE=y
+CONFIG_ARCH_CHIP="stm32f0l0g0"
+CONFIG_ARCH_CHIP_STM32G0=y
+CONFIG_ARCH_CHIP_STM32G0B1RE=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARD_LOOPSPERMSEC=4164
+CONFIG_BUILTIN=y
+CONFIG_DISABLE_ENVIRON=y
+CONFIG_DISABLE_MOUNTPOINT=y
+CONFIG_DISABLE_MQUEUE=y
+CONFIG_DISABLE_POSIX_TIMERS=y
+CONFIG_DISABLE_PSEUDOFS_OPERATIONS=y
+CONFIG_EXAMPLES_HELLO=y
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INIT_STACKSIZE=1536
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LINE_MAX=64
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=64
+CONFIG_NSH_READLINE=y
+CONFIG_NUNGET_CHARS=0
+CONFIG_POSIX_SPAWN_DEFAULT_STACKSIZE=1536
+CONFIG_PTHREAD_MUTEX_UNSAFE=y
+CONFIG_PTHREAD_STACK_DEFAULT=1536
+CONFIG_RAM_SIZE=147456
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_START_DAY=19
+CONFIG_START_MONTH=5
+CONFIG_START_YEAR=2013
+CONFIG_STDIO_DISABLE_BUFFERING=y
+CONFIG_STM32F0L0G0_PWR=y
+CONFIG_STM32F0L0G0_USART2=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_USART2_SERIAL_CONSOLE=y
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/include/board.h
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/include/board.h
new file mode 100644
index 0000000000..01f004fe4a
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/include/board.h
@@ -0,0 +1,210 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/nucleo-g0b1re/include/board.h
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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_STM32F0L0G0_NUCLEO_G0B1RE_INCLUDE_BOARD_H
+#define __BOARDS_ARM_STM32F0L0G0_NUCLEO_G0B1RE_INCLUDE_BOARD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef __ASSEMBLY__
+# include <stdint.h>
+# include <stdbool.h>
+#endif
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Clocking *****************************************************************/
+
+/* HSI - Internal 16 MHz RC Oscillator
+ * LSI - 32 KHz RC
+ * HSE - 8 MHz from MCO output of ST-LINK (disabled by default)
+ * LSE - 32.768 kHz
+ */
+
+#define STM32_BOARD_XTAL 8000000ul
+
+#define STM32_HSI_FREQUENCY 16000000ul
+#define STM32_LSI_FREQUENCY 32000 /* Between 30kHz and 60kHz */
+#define STM32_HSE_FREQUENCY STM32_BOARD_XTAL
+#define STM32_LSE_FREQUENCY 32768 /* X2 on board */
+
+/* Main PLL Configuration.
+ *
+ * PLL source is HSI = 16,000,000
+ *
+ * PLL_VCOx = (STM32_HSE_FREQUENCY / PLLM) * PLLN
+ * Subject to:
+ *
+ * 1 <= PLLM <= 8
+ * 8 <= PLLN <= 86
+ * 4 MHz <= PLL_IN <= 16MHz
+ * 64 MHz <= PLL_VCO <= 344MHz
+ * SYSCLK = PLLRCLK = PLL_VCO / PLLR
+ *
+ */
+
+/* PLL source is HSI, PLLN=50, PLLM=4
+ * PLLP enable, PLLQ enable, PLLR enable
+ *
+ * 2 <= PLLP <= 32
+ * 2 <= PLLQ <= 8
+ * 2 <= PLLR <= 8
+ *
+ * PLLR <= 64MHz
+ * PLLQ <= 128MHz
+ * PLLP <= 128MHz
+ *
+ * PLL_VCO = (16,000,000 / 4) * 50 = 200 MHz
+ *
+ * PLLP = PLL_VCO/4 = 200 MHz / 4 = 40 MHz
+ * PLLQ = PLL_VCO/4 = 200 MHz / 4 = 40 MHz
+ * PLLR = PLL_VCO/4 = 200 MHz / 4 = 40 MHz
+ */
+
+#define STM32_PLLCFG_PLLSRC RCC_PLLCFG_PLLSRC_HSI
+#define STM32_PLLCFG_PLLCFG (RCC_PLLCFG_PLLPEN | \
+ RCC_PLLCFG_PLLQEN | \
+ RCC_PLLCFG_PLLREN)
+
+#define STM32_PLLCFG_PLLM RCC_PLLCFG_PLLM(4)
+#define STM32_PLLCFG_PLLN RCC_PLLCFG_PLLN(50)
+#define STM32_PLLCFG_PLLP RCC_PLLCFG_PLLP(4)
+#define STM32_PLLCFG_PLLQ RCC_PLLCFG_PLLQ(4)
+#define STM32_PLLCFG_PLLR RCC_PLLCFG_PLLR(4)
+
+#define STM32_VCO_FREQUENCY ((STM32_HSE_FREQUENCY / 2) * 50)
+#define STM32_PLLP_FREQUENCY (STM32_VCO_FREQUENCY / 4)
+#define STM32_PLLQ_FREQUENCY (STM32_VCO_FREQUENCY / 4)
+#define STM32_PLLR_FREQUENCY (STM32_VCO_FREQUENCY / 4)
+
+/* Use the PLL and set the SYSCLK source to be the PLLR (40MHz) */
+
+#define STM32_SYSCLK_SW RCC_CFGR_SW_PLL
+#define STM32_SYSCLK_SWS RCC_CFGR_SWS_PLL
+#define STM32_SYSCLK_FREQUENCY (STM32_PLLR_FREQUENCY)
+
+/* AHB clock (HCLK) is SYSCLK (40MHz) */
+
+#define STM32_RCC_CFGR_HPRE RCC_CFGR_HPRE_SYSCLK
+#define STM32_HCLK_FREQUENCY STM32_SYSCLK_FREQUENCY
+
+/* APB1 clock (PCLK1) is HCLK/2 (20MHz) */
+
+#define STM32_RCC_CFGR_PPRE1 RCC_CFGR_PPRE1_HCLKd2
+#define STM32_PCLK1_FREQUENCY (STM32_HCLK_FREQUENCY/2)
+
+/* LED definitions **********************************************************/
+
+/* The Nucleo G0B1RE board has four LEDs. Three of these are controlled by
+ * logic on the board and are not available for software control:
+ *
+ * LD1 COM: LD1 default status is red. LD1 turns to green to indicate that
+ * communications are in progress between the PC and the
+ * ST-LINK/V2-1.
+ *
+ * LD2 5V_USB_CHG: Green LED is on when board is powered by 5V source.
+ *
+ * LD3 PWR: red LED indicates that the board is powered.
+ *
+ * And one can be controlled by software:
+ *
+ * User LD4: green LED is a user LED connected to the I/O PA5 of the
+ * STM32G0B1RE.
+ *
+ * If CONFIG_ARCH_LEDS is not defined, then the user can control the LED in
+ * any way. The following definition is used to access the LED.
+ */
+
+/* LED index values for use with board_userled() */
+
+#define BOARD_LED1 0 /* User LD4 */
+#define BOARD_NLEDS 1
+
+/* LED bits for use with board_userled_all() */
+
+#define BOARD_LED1_BIT (1 << BOARD_LED1)
+
+/* If CONFIG_ARCH_LEDs is defined, then NuttX will control the LED on board
+ * the Nucleo G0B1RE. The following definitions describe how NuttX controls
+ * the LED:
+ *
+ * SYMBOL Meaning LED1 state
+ * ------------------ ----------------------- ----------
+ * 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 No change
+ * LED_SIGNAL In a signal handler No change
+ * LED_ASSERTION An assertion failed No change
+ * LED_PANIC The system has crashed Blinking
+ * LED_IDLE STM32 is is sleep mode Not used
+ */
+
+#define LED_STARTED 0
+#define LED_HEAPALLOCATE 0
+#define LED_IRQSENABLED 0
+#define LED_STACKCREATED 1
+#define LED_INIRQ 2
+#define LED_SIGNAL 2
+#define LED_ASSERTION 2
+#define LED_PANIC 1
+
+/* Button definitions *******************************************************/
+
+/* The Nucleo G0B1RE supports two buttons; only one button is controllable
+ * by software:
+ *
+ * B1 USER: user button connected to the I/O PC13 of the MCU.
+ * B2 RESET: push button connected to NRST is used to RESET the MCU.
+ */
+
+#define BUTTON_USER 0
+#define NUM_BUTTONS 1
+
+#define BUTTON_USER_BIT (1 << BUTTON_USER)
+
+/* Alternate function pin selections ****************************************/
+
+/* USART */
+
+/* By default the USART2 is connected to STLINK Virtual COM Port:
+ * USART2_RX - PA3
+ * USART2_TX - PA2
+ */
+
+#define GPIO_USART2_RX (GPIO_USART2_RX_1|GPIO_SPEED_HIGH) /* PA3 */
+#define GPIO_USART2_TX (GPIO_USART2_TX_1|GPIO_SPEED_HIGH) /* PA2 */
+
+/* DMA channels *************************************************************/
+
+/* ADC */
+
+#define ADC1_DMA_CHAN DMACHAN_ADC1 /* DMA1_CH1 */
+
+#endif /* __BOARDS_ARM_STM32F0L0G0_NUCLEO_G0B1RE_INCLUDE_BOARD_H */
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/scripts/Make.defs
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/scripts/Make.defs
new file mode 100644
index 0000000000..e7c7c7f21a
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/scripts/Make.defs
@@ -0,0 +1,41 @@
+############################################################################
+# boards/arm/stm32f0l0g0/nucleo-g071rb/scripts/Make.defs
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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 = ld.script
+ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
+
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES)
$(ARCHDEFINES) $(EXTRAFLAGS)
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS)
$(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
+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
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/scripts/ld.script
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/scripts/ld.script
new file mode 100644
index 0000000000..e78ba1f4a3
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/scripts/ld.script
@@ -0,0 +1,115 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/nucleo-g071rb/scripts/ld.script
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 STM32GOB1RE has 512Kb of FLASH beginning at address 0x0800:0000.
+ * 128Kb (with parity) or 144Kb (without parity) of SRAM
+ *
+ * When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
+ * where the code expects to begin execution by jumping to the entry point in
+ * the 0x0800:0000 address range.
+ */
+
+MEMORY
+{
+ flash (rx) : ORIGIN = 0x08000000, LENGTH = 512K
+ sram (rwx) : ORIGIN = 0x20000000, LENGTH = 144K
+}
+
+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 : ALIGN(4) {
+ _sinit = ABSOLUTE(.);
+ KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*)
SORT_BY_INIT_PRIORITY(.ctors.*)))
+ KEEP(*(.init_array EXCLUDE_FILE(*crtbegin.o *crtbegin?.o *crtend.o
*crtend?.o) .ctors))
+ _einit = ABSOLUTE(.);
+ } > flash
+
+ .ARM.extab : ALIGN(4) {
+ *(.ARM.extab*)
+ } > flash
+
+ .ARM.exidx : ALIGN(4) {
+ __exidx_start = ABSOLUTE(.);
+ *(.ARM.exidx*)
+ __exidx_end = ABSOLUTE(.);
+ } > flash
+
+ _eronly = ABSOLUTE(.);
+
+ /* The RAM vector table (if present) should lie at the beginning of SRAM */
+
+ .ram_vectors : {
+ *(.ram_vectors)
+ } > sram
+
+ .data : ALIGN(4) {
+ _sdata = ABSOLUTE(.);
+ *(.data .data.*)
+ *(.gnu.linkonce.d.*)
+ CONSTRUCTORS
+ . = ALIGN(4);
+ _edata = ABSOLUTE(.);
+ } > sram AT > flash
+
+ .bss : ALIGN(4) {
+ _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/stm32f0l0g0/nucleo-g0b1re/src/CMakeLists.txt
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/CMakeLists.txt
new file mode 100644
index 0000000000..17b4bbcbc4
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/CMakeLists.txt
@@ -0,0 +1,41 @@
+#
##############################################################################
+# boards/arm/stm32f0l0g0/nucleo-g0b1re/src/CMakeLists.txt
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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.
+#
+#
##############################################################################
+
+set(SRCS stm32_boot.c stm32_bringup.c)
+
+if(CONFIG_ARCH_LEDS)
+ list(APPEND SRCS stm32_autoleds.c)
+else()
+ list(APPEND SRCS stm32_userleds.c)
+endif()
+
+if(CONFIG_ARCH_BUTTONS)
+ list(APPEND SRCS stm32_buttons.c)
+endif()
+
+if(CONFIG_BOARDCTL)
+ list(APPEND SRCS stm32_appinit.c)
+endif()
+
+target_sources(board PRIVATE ${SRCS})
+
+set_property(GLOBAL PROPERTY LD_SCRIPT "${NUTTX_BOARD_DIR}/scripts/ld.script")
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/Make.defs
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/Make.defs
new file mode 100644
index 0000000000..52132088ed
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/Make.defs
@@ -0,0 +1,43 @@
+############################################################################
+# boards/arm/stm32f0l0g0/nucleo-g0b1re/src/Make.defs
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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 $(TOPDIR)/Make.defs
+
+CSRCS = stm32_boot.c stm32_bringup.c
+
+ifeq ($(CONFIG_ARCH_LEDS),y)
+CSRCS += stm32_autoleds.c
+else
+CSRCS += stm32_userleds.c
+endif
+
+ifeq ($(CONFIG_ARCH_BUTTONS),y)
+CSRCS += stm32_buttons.c
+endif
+
+ifeq ($(CONFIG_BOARDCTL),y)
+CSRCS += stm32_appinit.c
+endif
+
+DEPPATH += --dep-path board
+VPATH += :board
+CFLAGS +=
${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board
\ No newline at end of file
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/nucleo-g0b1re.h
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/nucleo-g0b1re.h
new file mode 100644
index 0000000000..f80805e579
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/nucleo-g0b1re.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/nucleo-g0b1re/src/nucleo-g0b1re.h
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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_STM32F0L0G0_NUCLEO_G0B1RE_SRC_NUCLEO_G0B1RE_H
+#define __BOARDS_ARM_STM32F0L0G0_NUCLEO_G0B1RE_SRC_NUCLEO_G0B1RE_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* LED definitions **********************************************************/
+
+/* The Nucleo G0B1RE board has four LEDs, but only one is user controllable.
+ * See board.h for description of these LEDs and their functions.
+ *
+ * If CONFIG_ARCH_LEDS is not defined, then the user can control the LED in
+ * any way. The following definition is used to access the LED.
+ */
+
+#define GPIO_LED1 (GPIO_OUTPUT | GPIO_PUSHPULL | GPIO_SPEED_HIGH | \
+ GPIO_OUTPUT_CLEAR | GPIO_PORTA | GPIO_PIN5)
+
+#define LED_DRIVER_PATH "/dev/userleds"
+
+/* Button definitions *******************************************************/
+
+/* The Nucleo G0B1RE supports two buttons; only one button is controllable
+ * by software:
+ *
+ * B1 USER: user button connected to the I/O PC13 of the MCU.
+ * B2 RESET: push button connected to NRST is used to RESET the MCU.
+ *
+ * NOTE that EXTI interrupts are configured.
+ */
+
+#define MIN_IRQBUTTON BUTTON_USER
+#define MAX_IRQBUTTON BUTTON_USER
+#define NUM_IRQBUTTONS 1
+
+#define GPIO_BTN_USER (GPIO_INPUT | GPIO_FLOAT | GPIO_EXTI | GPIO_PORTC | \
+ GPIO_PIN13)
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_bringup
+ *
+ * Description:
+ * Perform architecture-specific initialization
+ *
+ * CONFIG_BOARD_LATE_INITIALIZE=y :
+ * Called from board_late_initialize().
+ *
+ * CONFIG_BOARD_LATE_INITIALIZE=y && CONFIG_BOARDCTL=y :
+ * Called from the NSH library
+ *
+ ****************************************************************************/
+
+int stm32_bringup(void);
+
+#endif /* __BOARDS_ARM_STM32F0L0G0_NUCLEO_G0B1RE_SRC_NUCLEO_G0B1RE_H */
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_appinit.c
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_appinit.c
new file mode 100644
index 0000000000..6f8bc76d69
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_appinit.c
@@ -0,0 +1,77 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_appinit.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 <syslog.h>
+
+#include <nuttx/board.h>
+#include <nuttx/leds/userled.h>
+
+#include "nucleo-g0b1re.h"
+
+/****************************************************************************
+ * 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)
+{
+#ifdef CONFIG_BOARD_LATE_INITIALIZE
+ /* Board initialization already performed by board_late_initialize() */
+
+ return OK;
+#else
+ /* Perform board-specific initialization */
+
+ return stm32_bringup();
+#endif
+}
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_autoleds.c
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_autoleds.c
new file mode 100644
index 0000000000..ffd93e3b7d
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_autoleds.c
@@ -0,0 +1,81 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_autoleds.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/board.h>
+
+#include "stm32_gpio.h"
+#include "nucleo-g0b1re.h"
+
+#include <arch/board/board.h>
+
+#ifdef CONFIG_ARCH_LEDS
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_autoled_initialize
+ ****************************************************************************/
+
+void board_autoled_initialize(void)
+{
+ /* Configure LED1 GPIO for output */
+
+ stm32_configgpio(GPIO_LED1);
+}
+
+/****************************************************************************
+ * Name: board_autoled_on
+ ****************************************************************************/
+
+void board_autoled_on(int led)
+{
+ if (led == BOARD_LED1)
+ {
+ stm32_gpiowrite(GPIO_LED1, true);
+ }
+}
+
+/****************************************************************************
+ * Name: board_autoled_off
+ ****************************************************************************/
+
+void board_autoled_off(int led)
+{
+ if (led == BOARD_LED1)
+ {
+ stm32_gpiowrite(GPIO_LED1, false);
+ }
+}
+
+#endif /* CONFIG_ARCH_LEDS */
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_boot.c
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_boot.c
new file mode 100644
index 0000000000..97a7c428eb
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_boot.c
@@ -0,0 +1,85 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_boot.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 <nuttx/board.h>
+#include <arch/board/board.h>
+
+#include "nucleo-g0b1re.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_boardinitialize
+ *
+ * Description:
+ * All STM32 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 stm32_boardinitialize(void)
+{
+#ifdef CONFIG_ARCH_LEDS
+ /* Configure on-board LEDs if LED support has been selected. */
+
+ board_autoled_initialize();
+#endif
+
+#ifdef CONFIG_STM32F0L0G0_SPI
+ /* Configure SPI chip selects */
+
+ stm32_spidev_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_initialize() 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-specific initialization */
+
+ stm32_bringup();
+}
+#endif
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_bringup.c
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_bringup.c
new file mode 100644
index 0000000000..42472f688d
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_bringup.c
@@ -0,0 +1,155 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_bringup.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 <syslog.h>
+
+#include <nuttx/board.h>
+#include <nuttx/leds/userled.h>
+
+#include "nucleo-g0b1re.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#undef HAVE_LEDS
+#undef HAVE_DAC
+
+#if !defined(CONFIG_ARCH_LEDS) && defined(CONFIG_USERLED_LOWER)
+# define HAVE_LEDS 1
+#endif
+
+#if defined(CONFIG_DAC)
+# define HAVE_DAC1 1
+# define HAVE_DAC2 1
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_bringup
+ *
+ * Description:
+ * Perform architecture-specific initialization
+ *
+ * CONFIG_BOARD_LATE_INITIALIZE=y :
+ * Called from board_late_initialize().
+ *
+ * CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_BOARDCTL=y :
+ * Called from the NSH library
+ *
+ ****************************************************************************/
+
+int stm32_bringup(void)
+{
+ int ret;
+
+#ifdef HAVE_LEDS
+ /* Register the LED driver */
+
+ ret = userled_lower_initialize(LED_DRIVER_PATH);
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n",
+ ret);
+ return ret;
+ }
+#endif
+
+#ifdef CONFIG_ADC
+ /* Initialize ADC and register the ADC driver. */
+
+ ret = stm32_adc_setup();
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: stm32_adc_setup failed: %d\n", ret);
+ }
+#endif
+
+#ifdef CONFIG_DAC
+ /* Initialize DAC and register the DAC driver. */
+
+ ret = stm32_dac_setup();
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: stm32_dac_setup failed: %d\n", ret);
+ }
+#endif
+
+#ifdef CONFIG_COMP
+ /* Initialize COMP and register the COMP driver. */
+
+ ret = stm32_comp_setup();
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: stm32_comp_setup failed: %d\n", ret);
+ }
+#endif
+
+#ifdef CONFIG_OPAMP
+ /* Initialize OPAMP and register the OPAMP driver. */
+
+ ret = stm32_opamp_setup();
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: stm32_opamp_setup failed: %d\n", ret);
+ }
+#endif
+
+#ifdef CONFIG_WL_NRF24L01
+ ret = stm32_wlinitialize();
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: Failed to initialize wireless driver: %d\n",
+ ret);
+ }
+#endif /* CONFIG_WL_NRF24L01 */
+
+#ifdef CONFIG_LPWAN_SX127X
+ ret = stm32_lpwaninitialize();
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: Failed to initialize wireless driver: %d\n",
+ ret);
+ }
+#endif /* CONFIG_LPWAN_SX127X */
+
+#ifdef CONFIG_CL_MFRC522
+ ret = stm32_mfrc522initialize("/dev/rfid0");
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: stm32_mfrc522initialize() failed: %d\n", ret);
+ }
+#endif /* CONFIG_CL_MFRC522 */
+
+ UNUSED(ret);
+ return OK;
+}
diff --git a/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_buttons.c
b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_buttons.c
new file mode 100644
index 0000000000..688327750b
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_buttons.c
@@ -0,0 +1,118 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/nucleo-g0b1re/src/stm32_buttons.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 <stdint.h>
+#include <stdbool.h>
+#include <errno.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/board.h>
+
+#include "stm32_gpio.h"
+#include "nucleo-g0b1re.h"
+
+#include <arch/board/board.h>
+
+#ifdef CONFIG_ARCH_BUTTONS
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_button_initialize
+ *
+ * Description:
+ * board_button_initialize() must be called to initialize button resources.
+ * After that, board_buttons() may be called to collect the current state
+ * of all buttons or board_button_irq() may be called to register button
+ * interrupt handlers.
+ *
+ ****************************************************************************/
+
+uint32_t board_button_initialize(void)
+{
+ /* Configure the single button as an input. NOTE that EXTI interrupts are
+ * also configured for the pin.
+ */
+
+ stm32_configgpio(GPIO_BTN_USER);
+ return NUM_BUTTONS;
+}
+
+/****************************************************************************
+ * Name: board_buttons
+ ****************************************************************************/
+
+uint32_t board_buttons(void)
+{
+ /* Check that state of each USER button. A LOW value means that the key is
+ * pressed.
+ */
+
+ bool released = stm32_gpioread(GPIO_BTN_USER);
+ return !released;
+}
+
+/****************************************************************************
+ * Button support.
+ *
+ * Description:
+ * board_button_initialize() must be called to initialize button resources.
+ * After that, board_buttons() may be called to collect the current state
+ * of all buttons or board_button_irq() may be called to register button
+ * interrupt handlers.
+ *
+ * After board_button_initialize() has been called, board_buttons() may be
+ * called to collect the state of all buttons. board_buttons() returns an
+ * 32-bit bit set with each bit associated with a button. See the
+ * BUTTON_*_BIT definitions in board.h for the meaning of each bit.
+ *
+ * board_button_irq() may be called to register an interrupt handler that
+ * will be called when a button is depressed or released. The ID value is a
+ * button enumeration value that uniquely identifies a button resource. See
+ * the BUTTON_* definitions in board.h for the meaning of enumeration
+ * value.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_IRQBUTTONS
+int board_button_irq(int id, xcpt_t irqhandler, void *arg)
+{
+ int ret = -EINVAL;
+
+ if (id == BUTTON_USER)
+ {
+ ret = stm32_gpiosetevent(GPIO_BTN_USER, true, true, true,
+ irqhandler, arg);
+ }
+
+ return ret;
+}
+#endif
+#endif /* CONFIG_ARCH_BUTTONS */
