mirror of
https://github.com/apache/nuttx.git
synced 2026-06-06 16:50:55 +08:00
Add board support to test Microchip MCP2515 driver
This commit is contained in:
Alan Carvalho de Assis
@@ -0,0 +1,113 @@
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############################################################################
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# configs/stm32f103-minimum/nsh/Make.defs
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#
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# Copyright (C) 2016 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <gnutt@nuttx.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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include ${TOPDIR}/.config
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include ${TOPDIR}/tools/Config.mk
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include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
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LDSCRIPT = ld.script
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ifeq ($(WINTOOL),y)
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# Windows-native toolchains
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DIRLINK = $(TOPDIR)/tools/copydir.sh
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DIRUNLINK = $(TOPDIR)/tools/unlink.sh
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MKDEP = $(TOPDIR)/tools/mkwindeps.sh
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ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
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ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
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ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
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else
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# Linux/Cygwin-native toolchain
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MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
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ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
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ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
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ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
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endif
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CC = $(CROSSDEV)gcc
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CXX = $(CROSSDEV)g++
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CPP = $(CROSSDEV)gcc -E
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LD = $(CROSSDEV)ld
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AR = $(CROSSDEV)ar rcs
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NM = $(CROSSDEV)nm
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OBJCOPY = $(CROSSDEV)objcopy
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OBJDUMP = $(CROSSDEV)objdump
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ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
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ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
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ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
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ARCHOPTIMIZATION = -g
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endif
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ifneq ($(CONFIG_DEBUG_NOOPT),y)
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ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
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endif
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ARCHCFLAGS = -fno-builtin
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ARCHCXXFLAGS = -fno-builtin -fno-exceptions -fcheck-new
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ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
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ARCHWARNINGSXX = -Wall -Wshadow -Wundef
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ARCHDEFINES =
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ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
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CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
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CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
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CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
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CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
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CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
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AFLAGS = $(CFLAGS) -D__ASSEMBLY__
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NXFLATLDFLAGS1 = -r -d -warn-common
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NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
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LDNXFLATFLAGS = -e main -s 2048
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ASMEXT = .S
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OBJEXT = .o
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LIBEXT = .a
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EXEEXT =
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ifneq ($(CROSSDEV),arm-nuttx-elf-)
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LDFLAGS += -nostartfiles -nodefaultlibs
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endif
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ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
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LDFLAGS += -g
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endif
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HOSTCC = gcc
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HOSTINCLUDES = -I.
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HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
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HOSTLDFLAGS =
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File diff suppressed because it is too large
Load Diff
@@ -69,6 +69,10 @@ ifeq ($(CONFIG_AUDIO_TONE),y)
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CSRCS += stm32_tone.c
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endif
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ifeq ($(CONFIG_CAN_MCP2515),y)
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CSRCS += stm32_mcp2515.c
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endif
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ifeq ($(CONFIG_CL_MFRC522),y)
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CSRCS += stm32_mfrc522.c
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endif
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@@ -151,6 +151,13 @@ int stm32_bringup(void)
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}
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#endif
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#ifdef CONFIG_CAN_MCP2515
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ret = stm32_mcp2515initialize("/dev/can0");
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: stm32_mcp2515initialize() failed: %d\n", ret);
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}
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#endif
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#ifdef CONFIG_CL_MFRC522
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ret = stm32_mfrc522initialize("/dev/rfid0");
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@@ -0,0 +1,240 @@
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/************************************************************************************
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* configs/stm32f4discovery/src/stm32_mcp2515.c
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*
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* Copyright (C) 2015 Alan Carvalho de Assis. All rights reserved.
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* Author: Alan Carvalho de Assis <acassis@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/can/mcp2515.h>
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#include "stm32.h"
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#include "stm32_spi.h"
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#include "stm32f103_minimum.h"
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#if defined(CONFIG_SPI) && defined(CONFIG_STM32_SPI1) && defined(CONFIG_CAN_MCP2515)
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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#define MCP2515_SPI_PORTNO 1 /* On SPI1 */
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct stm32_mcp2515config_s
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{
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/* Configuration structure as seen by the MCP2515 driver */
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struct mcp2515_config_s config;
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/* Additional private definitions only known to this driver */
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MCP2515_HANDLE handle; /* The MCP2515 driver handle */
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mcp2515_handler_t handler; /* The MCP2515 interrupt handler */
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FAR void *arg; /* Argument to pass to the interrupt handler */
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};
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/****************************************************************************
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* Static Function Prototypes
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****************************************************************************/
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/* IRQ/GPIO access callbacks. These operations all hidden behind callbacks
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* to isolate the MCP2515 driver from differences in GPIO interrupt handling
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* by varying boards and MCUs.
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*
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* attach - Attach the MCP2515 interrupt handler to the GPIO interrupt
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*/
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static int mcp2515_attach(FAR struct mcp2515_config_s *state,
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mcp2515_handler_t handler, FAR void *arg);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* A reference to a structure of this type must be passed to the MCP2515
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* driver. This structure provides information about the configuration
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* of the MCP2515 and provides some board-specific hooks.
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*
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* Memory for this structure is provided by the caller. It is not copied
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* by the driver and is presumed to persist while the driver is active. The
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* memory must be writable because, under certain circumstances, the driver
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* may modify frequency or X plate resistance values.
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*/
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static struct stm32_mcp2515config_s g_mcp2515config =
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{
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.config =
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{
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.devid = 0,
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.nfilters = 6,
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.ntxbuffers = 3,
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.attach = mcp2515_attach,
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},
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/* This is the MCP2515 Interupt handler */
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int mcp2515_interrupt(int irq, FAR void *context)
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{
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/* Verify that we have a handler attached */
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if (g_mcp2515config.handler)
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{
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/* Yes.. forward with interrupt along with its argument */
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g_mcp2515config.handler(&g_mcp2515config.config, g_mcp2515config.arg);
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}
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return OK;
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}
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static int mcp2515_attach(FAR struct mcp2515_config_s *state,
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mcp2515_handler_t handler, FAR void *arg)
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{
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FAR struct stm32_mcp2515config_s *priv =
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(FAR struct stm32_mcp2515config_s *) state;
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irqstate_t flags;
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caninfo("Saving handle %p\n", handler);
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flags = enter_critical_section();
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priv->handler = handler;
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priv->arg = arg;
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/* Configure the interrupt for falling edge*/
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(void)stm32_gpiosetevent(GPIO_MCP2515_IRQ, false, true, false, mcp2515_interrupt, NULL);
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leave_critical_section(flags);
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return OK;
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}
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: stm32_mcp2515initialize
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*
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* Description:
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* Initialize and register the MCP2515 RFID driver.
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*
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* Input parameters:
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* devpath - The full path to the driver to register. E.g., "/dev/rfid0"
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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************************************************************************************/
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int stm32_mcp2515initialize(FAR const char *devpath)
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{
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FAR struct spi_dev_s *spi;
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FAR struct can_dev_s *can;
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FAR struct mcp2515_can_s *mcp2515;
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int ret;
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/* Check if we are already initialized */
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if (!g_mcp2515config.handle)
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{
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sninfo("Initializing\n");
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/* Configure the MCP2515 interrupt pin as an input */
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(void)stm32_configgpio(GPIO_MCP2515_IRQ);
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spi = stm32_spibus_initialize(MCP2515_SPI_PORTNO);
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if (!spi)
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{
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return -ENODEV;
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}
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/* Save the SPI instance in the mcp2515_config_s structure */
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g_mcp2515config.config.spi = spi;
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/* Instantiate the MCP2515 CAN Driver */
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mcp2515 = mcp2515_instantiate(&g_mcp2515config.config);
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if (mcp2515 == NULL)
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{
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canerr("ERROR: Failed to get MCP2515 Driver Loaded\n");
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return -ENODEV;
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}
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/* Save the opaque structure */
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g_mcp2515config.handle = (MCP2515_HANDLE) mcp2515;
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/* Initialize the CAN Device with the MCP2515 operations */
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can = mcp2515_initialize(mcp2515);
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if (can == NULL)
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{
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canerr("ERROR: Failed to get CAN interface\n");
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return -ENODEV;
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}
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/* Register the CAN driver at "/dev/can0" */
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ret = can_register(devpath, can);
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if (ret < 0)
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{
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canerr("ERROR: can_register failed: %d\n", ret);
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return ret;
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}
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}
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return OK;
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}
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#endif /* CONFIG_SPI && CONFIG_CAN_MCP2515 */
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@@ -74,6 +74,10 @@ void stm32_spidev_initialize(void)
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* architecture.
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*/
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#ifdef CONFIG_CAN_MCP2515
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(void)stm32_configgpio(GPIO_MCP2515_CS); /* MCP2515 chip select */
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#endif
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#ifdef CONFIG_CL_MFRC522
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(void)stm32_configgpio(GPIO_CS_MFRC522); /* MFRC522 chip select */
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#endif
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@@ -120,6 +124,13 @@ void stm32_spidev_initialize(void)
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void stm32_spi1select(FAR struct spi_dev_s *dev, uint32_t devid,
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bool selected)
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{
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#if defined(CONFIG_CAN_MCP2515)
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if (devid == SPIDEV_CANBUS(0))
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{
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stm32_gpiowrite(GPIO_MCP2515_CS, !selected);
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}
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#endif
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#if defined(CONFIG_CL_MFRC522)
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if (devid == SPIDEV_WIRELESS(0))
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{
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@@ -86,6 +86,9 @@
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#define STM32_LCD_CS (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\
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GPIO_OUTPUT_SET|GPIO_PORTA|GPIO_PIN4)
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#define GPIO_MCP2515_CS (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\
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GPIO_OUTPUT_SET|GPIO_PORTA|GPIO_PIN4)
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#define GPIO_NRF24L01_CS (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\
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GPIO_OUTPUT_SET|GPIO_PORTA|GPIO_PIN4)
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@@ -114,6 +117,10 @@
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#define GPIO_NRF24L01_IRQ (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_PORTA|GPIO_PIN0)
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/* MCP2515 IRQ line: PB.0 */
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#define GPIO_MCP2515_IRQ (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_PORTB|GPIO_PIN0)
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/* USB Soft Connect Pullup: PC.13 */
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#define GPIO_USB_PULLUP (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\
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