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Posted to commits@nuttx.apache.org by xi...@apache.org on 2022/07/09 15:37:41 UTC
[incubator-nuttx] 02/02: boards: add initial support for stm32l0538-disco
This is an automated email from the ASF dual-hosted git repository.
xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
commit b3e11b605ad95e08b8e2b9acf05a30e8fd3b26b1
Author: raiden00pl <ra...@railab.me>
AuthorDate: Thu Jul 7 19:22:04 2022 +0200
boards: add initial support for stm32l0538-disco
---
boards/Kconfig | 17 +-
boards/arm/stm32f0l0g0/stm32l0538-disco/Kconfig | 8 +
boards/arm/stm32f0l0g0/stm32l0538-disco/README.txt | 15 ++
.../stm32l0538-disco/configs/nsh/defconfig | 50 ++++++
.../stm32f0l0g0/stm32l0538-disco/include/board.h | 193 +++++++++++++++++++++
.../stm32f0l0g0/stm32l0538-disco/scripts/Make.defs | 41 +++++
.../stm32f0l0g0/stm32l0538-disco/scripts/ld.script | 112 ++++++++++++
.../arm/stm32f0l0g0/stm32l0538-disco/src/Makefile | 39 +++++
.../stm32l0538-disco/src/stm32_appinit.c | 71 ++++++++
.../stm32l0538-disco/src/stm32_autoleds.c | 78 +++++++++
.../stm32f0l0g0/stm32l0538-disco/src/stm32_boot.c | 77 ++++++++
.../stm32l0538-disco/src/stm32_bringup.c | 85 +++++++++
.../stm32l0538-disco/src/stm32_buttons.c | 116 +++++++++++++
.../stm32l0538-disco/src/stm32l0538-disco.h | 102 +++++++++++
14 files changed, 1002 insertions(+), 2 deletions(-)
diff --git a/boards/Kconfig b/boards/Kconfig
index 0cb6e5fed4..ce75222761 100644
--- a/boards/Kconfig
+++ b/boards/Kconfig
@@ -1880,6 +1880,15 @@ config ARCH_BOARD_STM3240G_EVAL
microcontroller (ARM Cortex-M4 with FPU). This port uses a GNU Cortex-M4
toolchain (such as CodeSourcery).
+config ARCH_BOARD_STM32L0538_DISCO
+ bool "STMicro STM32L0538-Disco board"
+ depends on ARCH_CHIP_STM32L053C8
+ select ARCH_HAVE_LEDS
+ select ARCH_HAVE_BUTTONS
+ select ARCH_HAVE_IRQBUTTONS
+ ---help---
+ STMicro STM32L0538-Disco board based on the STMicro STM32L053C8 MCU.
+
config ARCH_BOARD_STM32F051_DISCOVERY
bool "STMicro STM32F051-Discovery board"
depends on ARCH_CHIP_STM32F051R8
@@ -1887,7 +1896,7 @@ config ARCH_BOARD_STM32F051_DISCOVERY
select ARCH_HAVE_BUTTONS
select ARCH_HAVE_IRQBUTTONS
---help---
- STMicro STM32F051-Discovery board based on the STMicro ARCH_CHIP_STM32F051R8 MCU.
+ STMicro STM32F051-Discovery board based on the STMicro STM32F051R8 MCU.
config ARCH_BOARD_STM32F072_DISCOVERY
bool "STMicro STM32F072-Discovery board"
@@ -1896,7 +1905,7 @@ config ARCH_BOARD_STM32F072_DISCOVERY
select ARCH_HAVE_BUTTONS
select ARCH_HAVE_IRQBUTTONS
---help---
- STMicro STM32F072-Discovery board based on the STMicro ARCH_CHIP_STM32F072RB MCU.
+ STMicro STM32F072-Discovery board based on the STMicro STM32F072RB MCU.
config ARCH_BOARD_STM32F3_DISCOVERY
bool "STMicro STM32F3-Discovery board"
@@ -2654,6 +2663,7 @@ config ARCH_BOARD
default "pnev5180b" if ARCH_BOARD_PNEV5180B
default "stm32butterfly2" if ARCH_BOARD_STM32_BUTTERFLY2
default "stm32_tiny" if ARCH_BOARD_STM32_TINY
+ default "stm32l0538-disco" if ARCH_BOARD_STM32L0538_DISCO
default "stm32f051-discovery" if ARCH_BOARD_STM32F051_DISCOVERY
default "stm32f072-discovery" if ARCH_BOARD_STM32F072_DISCOVERY
default "stm32f103-minimum" if ARCH_BOARD_STM32F103_MINIMUM
@@ -3059,6 +3069,9 @@ endif
if ARCH_BOARD_STM32F051_DISCOVERY
source "boards/arm/stm32f0l0g0/stm32f051-discovery/Kconfig"
endif
+if ARCH_BOARD_STM32L0538_DISCO
+source "boards/arm/stm32f0l0g0/stm32l0538-disco/Kconfig"
+endif
if ARCH_BOARD_STM32F072_DISCOVERY
source "boards/arm/stm32f0l0g0/stm32f072-discovery/Kconfig"
endif
diff --git a/boards/arm/stm32f0l0g0/stm32l0538-disco/Kconfig b/boards/arm/stm32f0l0g0/stm32l0538-disco/Kconfig
new file mode 100644
index 0000000000..f7e10a7921
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/Kconfig
@@ -0,0 +1,8 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+if ARCH_BOARD_STM32L0538_DISCO
+
+endif
diff --git a/boards/arm/stm32f0l0g0/stm32l0538-disco/README.txt b/boards/arm/stm32f0l0g0/stm32l0538-disco/README.txt
new file mode 100644
index 0000000000..3a7c0da3b8
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/README.txt
@@ -0,0 +1,15 @@
+README
+======
+
+ This README discusses issues unique to NuttX configurations for the
+ STMicro STM32L0538-DISO development board. The STM32L0538-DISO board
+ is based on the STM32L053C8 MCU (64Kbytes FLASH, 8Kbytes of SRAM and
+ 6Kbytes of EEPROM).
+
+ The board features:
+
+ - An ST-LINK/V2-1 embedded debug tool interface,
+ - 2.13" E-paper display, 122×250 pixels
+ - USB 2.0 FS
+ - One linear touch sensor or four touchkeys
+ - IDD current measurement
diff --git a/boards/arm/stm32f0l0g0/stm32l0538-disco/configs/nsh/defconfig b/boards/arm/stm32f0l0g0/stm32l0538-disco/configs/nsh/defconfig
new file mode 100644
index 0000000000..a593c3b222
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/configs/nsh/defconfig
@@ -0,0 +1,50 @@
+#
+# 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_ARCH="arm"
+CONFIG_ARCH_BOARD="stm32l0538-disco"
+CONFIG_ARCH_BOARD_STM32L0538_DISCO=y
+CONFIG_ARCH_CHIP="stm32f0l0g0"
+CONFIG_ARCH_CHIP_STM32L053C8=y
+CONFIG_ARCH_CHIP_STM32L053XX=y
+CONFIG_ARCH_CHIP_STM32L0=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARD_LOOPSPERMSEC=2796
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_FULLOPT=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DEFAULT_TASK_STACKSIZE=1024
+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_EXPERIMENTAL=y
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NUNGET_CHARS=0
+CONFIG_PREALLOC_TIMERS=0
+CONFIG_PTHREAD_MUTEX_UNSAFE=y
+CONFIG_RAM_SIZE=8192
+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_USART1=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_TLS_NELEM=0
+CONFIG_USART1_SERIAL_CONSOLE=y
diff --git a/boards/arm/stm32f0l0g0/stm32l0538-disco/include/board.h b/boards/arm/stm32f0l0g0/stm32l0538-disco/include/board.h
new file mode 100644
index 0000000000..c21ae58ad1
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/include/board.h
@@ -0,0 +1,193 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/stm32l0538-disco/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_STM32F0L0G0_STM32L0538_DISCO_INCLUDE_BOARD_H
+#define __BOARDS_ARM_STM32F0L0G0_STM32L0538_DISCO_INCLUDE_BOARD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Clocking *****************************************************************/
+
+/* HSI - Internal 16 MHz RC Oscillator
+ * LSI - 32 KHz RC
+ * HSE - 8 MHz from MCO output of ST-LINK
+ * LSE - 32.768 kHz
+ */
+
+#define STM32_BOARD_XTAL 8000000ul
+
+#define STM32_HSEBYP_ENABLE
+#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 */
+
+/* PLL source is HSE/1, PLL multipler is 8:
+ * PLL frequency is 8MHz (XTAL) x 8 = 64MHz
+ */
+
+#define STM32_CFGR_PLLSRC RCC_CFGR_PLLSRC
+#define STM32_CFGR_PLLXTPRE 0
+#define STM32_CFGR_PLLMUL RCC_CFGR_PLLMUL_CLKx8
+#define STM32_PLL_FREQUENCY (8*STM32_BOARD_XTAL)
+
+/* Use the PLL and set the SYSCLK source to be the PLL/2 (32MHz) */
+
+#define STM32_SYSCLK_SW RCC_CFGR_SW_PLL
+#define STM32_SYSCLK_SWS RCC_CFGR_SWS_PLL
+#define STM32_CFGR_PLLDIV RCC_CFGR_PLLDIV_2
+#define STM32_SYSCLK_FREQUENCY STM32_PLL_FREQUENCY/2
+
+/* AHB clock (HCLK) is SYSCLK (32MHz) */
+
+#define STM32_RCC_CFGR_HPRE RCC_CFGR_HPRE_SYSCLK
+#define STM32_HCLK_FREQUENCY STM32_SYSCLK_FREQUENCY
+
+/* APB2 clock (PCLK2) is HCLK (32MHz) */
+
+#define STM32_RCC_CFGR_PPRE2 RCC_CFGR_PPRE2_HCLK
+#define STM32_PCLK2_FREQUENCY STM32_HCLK_FREQUENCY
+#define STM32_APB2_CLKIN (STM32_PCLK2_FREQUENCY)
+
+/* APB1 clock (PCLK1) is HCLK/2 (16MHz) */
+
+#define STM32_RCC_CFGR_PPRE1 RCC_CFGR_PPRE1_HCLKd2
+#define STM32_PCLK1_FREQUENCY (STM32_HCLK_FREQUENCY/2)
+
+/* 48MHz clock configuration */
+
+#if defined(CONFIG_STM32F0L0G0_USB) || defined(CONFIG_STM32F0L0G0_RNG)
+# define STM32_USE_CLK48 1
+# define STM32_CLK48_SEL RCC_CCIPR_CLK48SEL_HSI48
+# define STM32_HSI48_SYNCSRC SYNCSRC_NONE
+#endif
+
+/* TODO: timers */
+
+/* LED definitions **********************************************************/
+
+/* The STM32L0538-DISCO board has three LEDs. Two 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.
+ * LD3 PWR: red LED indicates that the board is powered.
+ *
+ * And one can be controlled by software:
+ *
+ * User LD2: green LED is a user LED connected to the I/O PA5 of the
+ * STM32L053C8T6.
+ *
+ * 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 LD2 */
+#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 STM32L0538-DISCO. 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 STM32L0538-DISCO supports two buttons; only one button is controllable
+ * by software:
+ *
+ * B1 USER: user button connected to the I/O PA0 of the STM32L053C8T6.
+ * B2 RESET: push button connected to NRST is used to RESET the
+ * STM32L053C8T6.
+ */
+
+#define BUTTON_USER 0
+#define NUM_BUTTONS 1
+
+#define BUTTON_USER_BIT (1 << BUTTON_USER)
+
+/* Alternate function pin selections ****************************************/
+
+/* USART */
+
+/* By default the USART1 is connected to STLINK Virtual COM Port:
+ * USART1_RX - PA10
+ * USART1_TX - PA9
+ */
+
+#define GPIO_USART1_RX GPIO_USART1_RX_1 /* PA10 */
+#define GPIO_USART1_TX GPIO_USART1_TX_1 /* PA9 */
+
+/* SPI1 - E-papper display:
+ * SPI1_MISO - not used
+ * SPI1_MOSI - PB5
+ * SPI1_SCK - PB3
+ */
+
+#undef GPIO_SPI1_MISO /* Not used */
+#define GPIO_SPI1_MOSI GPIO_SPI1_MOSI_3 /* PB5 */
+#define GPIO_SPI1_SCK GPIO_SPI1_SCK_2 /* PB3 */
+
+/* SPI2 - NFC connector:
+ * SPI2_MISO - PB14
+ * SPI2_MOSI - PB15
+ * SPI2_SCK - PB13
+ */
+
+#define GPIO_SPI2_MISO GPIO_SPI2_MISO_1 /* PB14 */
+#define GPIO_SPI2_MOSI GPIO_SPI2_MOSI_1 /* PB15 */
+#define GPIO_SPI2_SCK GPIO_SPI2_SCK_3 /* PB13 */
+
+#endif /* __BOARDS_ARM_STM32F0L0G0_STM32L0538_DISCO_INCLUDE_BOARD_H */
diff --git a/boards/arm/stm32f0l0g0/stm32l0538-disco/scripts/Make.defs b/boards/arm/stm32f0l0g0/stm32l0538-disco/scripts/Make.defs
new file mode 100644
index 0000000000..f00ff5ea9e
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/scripts/Make.defs
@@ -0,0 +1,41 @@
+############################################################################
+# boards/arm/stm32f0l0g0/stm32l0538-disco/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 = ld.script
+ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
+
+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
diff --git a/boards/arm/stm32f0l0g0/stm32l0538-disco/scripts/ld.script b/boards/arm/stm32f0l0g0/stm32l0538-disco/scripts/ld.script
new file mode 100644
index 0000000000..b0ec49a950
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/scripts/ld.script
@@ -0,0 +1,112 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/stm32l0538-disco/scripts/ld.script
+ *
+ * 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 STM32L0538-DISCO has 64Kb of FLASH beginning at address 0x0800:0000.
+ * 8Kb of SRAM and 6Kb of EEPROM
+ *
+ * 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 = 64K
+ sram (rwx) : ORIGIN = 0x20000000, LENGTH = 8K
+}
+
+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(.);
+ *(.init_array .init_array.*)
+ _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/stm32l0538-disco/src/Makefile b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/Makefile
new file mode 100644
index 0000000000..4a3cbb6dc1
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/Makefile
@@ -0,0 +1,39 @@
+############################################################################
+# boards/arm/stm32f0l0g0/stm32l0538-disco/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 $(TOPDIR)/Make.defs
+
+CSRCS = stm32_boot.c stm32_bringup.c
+
+ifeq ($(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
+
+include $(TOPDIR)/boards/Board.mk
diff --git a/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_appinit.c b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_appinit.c
new file mode 100644
index 0000000000..3bae36e748
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_appinit.c
@@ -0,0 +1,71 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_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 <sys/types.h>
+
+#include "stm32l0538-disco.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/stm32l0538-disco/src/stm32_autoleds.c b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_autoleds.c
new file mode 100644
index 0000000000..84d8e2a62d
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_autoleds.c
@@ -0,0 +1,78 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <nuttx/board.h>
+
+#include "stm32_gpio.h"
+#include "stm32l0538-disco.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/stm32l0538-disco/src/stm32_boot.c b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_boot.c
new file mode 100644
index 0000000000..f92ae77cc8
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_boot.c
@@ -0,0 +1,77 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_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 <nuttx/board.h>
+#include <arch/board/board.h>
+
+#include "stm32l0538-disco.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
+}
+
+/****************************************************************************
+ * 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/stm32l0538-disco/src/stm32_bringup.c b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_bringup.c
new file mode 100644
index 0000000000..5098c231df
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_bringup.c
@@ -0,0 +1,85 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_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 <syslog.h>
+
+#include "stm32l0538-disco.h"
+
+#ifdef CONFIG_INPUT_BUTTONS
+# include <nuttx/input/buttons.h>
+#endif
+
+#ifdef CONFIG_USERLED
+# include <nuttx/leds/userled.h>
+#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 CONFIG_INPUT_BUTTONS
+ /* Register the BUTTON driver */
+
+ ret = btn_lower_initialize("/dev/buttons");
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: btn_lower_initialize() failed: %d\n", ret);
+ }
+#endif
+
+#ifdef CONFIG_USERLED
+ /* 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
+
+ UNUSED(ret);
+ return OK;
+}
diff --git a/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_buttons.c b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_buttons.c
new file mode 100644
index 0000000000..3d8b6b6cac
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_buttons.c
@@ -0,0 +1,116 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32_buttons.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 <stdint.h>
+#include <stdbool.h>
+#include <errno.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/board.h>
+
+#include "stm32_gpio.h"
+#include "stm32l0538-disco.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 */
diff --git a/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32l0538-disco.h b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32l0538-disco.h
new file mode 100644
index 0000000000..e776f1dccf
--- /dev/null
+++ b/boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32l0538-disco.h
@@ -0,0 +1,102 @@
+/****************************************************************************
+ * boards/arm/stm32f0l0g0/stm32l0538-disco/src/stm32l0538-disco.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_STM32F0L0G0_STM32L0538_DISCO_SRC_STM32L0538_DISCO_H
+#define __BOARDS_ARM_STM32F0L0G0_STM32L0538_DISCO_SRC_STM32L0538_DISCO_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* LED definitions **********************************************************/
+
+/* The STM32L0538-DISCO board has three LEDs. Two 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 PWR: red LED indicates that the board is powered.
+ *
+ * And one can be controlled by software:
+ *
+ * User LD3: green LED is a user LED connected to the I/O PB5 of the
+ * STM32L053C8T6.
+ * User LD4: green LED is a user LED connected to the I/O PA5 of the
+ * STM32L053C8T6.
+ *
+ * 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_PORTB | GPIO_PIN5)
+#define GPIO_LED2 (GPIO_OUTPUT | GPIO_PUSHPULL | GPIO_SPEED_HIGH | \
+ GPIO_OUTPUT_CLEAR | GPIO_PORTA | GPIO_PIN5)
+
+#define LED_DRIVER_PATH "/dev/userleds"
+
+/* Button definitions *******************************************************/
+
+/* The STM32L0538-DISCO supports two buttons; only one button is controllable
+ * by software:
+ *
+ * B1 USER: user button connected to the I/O PA0 of the STM32L053C8T6.
+ * B2 RESET: push button connected to NRST is used to RESET the
+ * STM32L053C8T6 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_PORTA | \
+ GPIO_PIN0)
+
+/****************************************************************************
+ * 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_STM32L0538_DISCO_SRC_STM32L0538_DISCO_H */