e2af903d05
This uses the core/dev/spi.h header and implements the spi_init()
function and the various macros for SPI operation. ssi.h contains all of
the register locations and information.
This implementation is not very versatile, mostly because I don't how to
make it flexible in the contiki system. It supports pin muxing for the
four spi pins, but other than that picks sensible defaults.
The SPI macros (like SPI_READ()) are defined in
cpu/cc2538/spi-arch.h. In order to use the SPI driver, add the following
includes to your project:
#include "spi-arch.h
#include "dev/spi.h"
91 lines
2.8 KiB
Makefile
91 lines
2.8 KiB
Makefile
CC = arm-none-eabi-gcc
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CPP = arm-none-eabi-cpp
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LD = arm-none-eabi-gcc
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AR = arm-none-eabi-ar
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OBJCOPY = arm-none-eabi-objcopy
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NM = arm-none-eabi-nm
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LDSCRIPT = $(OBJECTDIR)/cc2538.ld
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CFLAGS += -O2 -mcpu=cortex-m3 -mthumb -mlittle-endian
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CFLAGS += -fshort-enums -fomit-frame-pointer -fno-strict-aliasing
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CFLAGS += -Wall
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LDFLAGS += -mcpu=cortex-m3 -mthumb -nostartfiles
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LDFLAGS += -T $(LDSCRIPT)
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LDFLAGS += -Wl,-Map=$(@:.elf=-$(TARGET).map),--cref,--no-warn-mismatch
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OBJCOPY_FLAGS += -O binary --gap-fill 0xff
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### Are we building with code size optimisations?
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ifeq ($(SMALL),1)
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CFLAGS += -ffunction-sections -fdata-sections
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LDFLAGS += -Wl,--gc-sections
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endif
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### If the user-specified a Node ID, pass a define
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ifdef NODEID
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CFLAGS += -DIEEE_ADDR_NODE_ID=$(NODEID)
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endif
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### CPU-dependent cleanup files
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CLEAN += symbols.c symbols.h *.d *.elf
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### CPU-dependent directories
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CONTIKI_CPU_DIRS = . dev usb
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### Use the existing debug I/O in cpu/arm/common
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CONTIKI_CPU_DIRS += ../arm/common/dbg-io
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### Use usb core from cpu/cc253x/usb/common
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CONTIKI_CPU_DIRS += ../cc253x/usb/common ../cc253x/usb/common/cdc-acm
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### CPU-dependent source files
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CONTIKI_CPU_SOURCEFILES += clock.c rtimer-arch.c uart.c watchdog.c
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CONTIKI_CPU_SOURCEFILES += nvic.c cpu.c sys-ctrl.c gpio.c ioc.c spi.c
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CONTIKI_CPU_SOURCEFILES += cc2538-rf.c udma.c lpm.c
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CONTIKI_CPU_SOURCEFILES += dbg.c ieee-addr.c
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CONTIKI_CPU_SOURCEFILES += slip-arch.c slip.c
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DEBUG_IO_SOURCEFILES += dbg-printf.c dbg-snprintf.c dbg-sprintf.c strformat.c
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USB_CORE_SOURCEFILES += usb-core.c cdc-acm.c
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USB_ARCH_SOURCEFILES += usb-arch.c usb-serial.c cdc-acm-descriptors.c
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CONTIKI_SOURCEFILES += $(CONTIKI_CPU_SOURCEFILES) $(DEBUG_IO_SOURCEFILES)
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CONTIKI_SOURCEFILES += $(USB_CORE_SOURCEFILES) $(USB_ARCH_SOURCEFILES)
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### Don't treat the .elf as intermediate
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.PRECIOUS: %.elf %.bin
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### Always re-build ieee-addr.o in case the command line passes a new NODEID
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FORCE:
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$(OBJECTDIR)/ieee-addr.o: ieee-addr.c FORCE | $(OBJECTDIR)
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$(TRACE_CC)
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$(Q)$(CC) $(CFLAGS) -c $< -o $@
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### Compilation rules
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CUSTOM_RULE_LINK=1
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%.elf: $(TARGET_STARTFILES) %.co $(PROJECT_OBJECTFILES) $(PROJECT_LIBRARIES) contiki-$(TARGET).a $(LDSCRIPT)
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$(TRACE_LD)
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$(Q)$(LD) $(LDFLAGS) ${filter-out $(LDSCRIPT) %.a,$^} ${filter %.a,$^} -o $@
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%.bin: %.elf
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$(OBJCOPY) $(OBJCOPY_FLAGS) $< $@
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### We don't really need the .bin for the .$(TARGET) but let's make sure it
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### gets built
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%.$(TARGET): %.elf %.bin
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cp $< $@
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### This rule is used to generate the correct linker script
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LDGENFLAGS += $(addprefix -D,$(subst $(COMMA), ,$(DEFINES)))
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LDGENFLAGS += $(addprefix -I,$(SOURCEDIRS))
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LDGENFLAGS += -imacros "contiki-conf.h"
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LDGENFLAGS += -x c -P -E
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# NB: Assumes LDSCRIPT was not overridden and is in $(OBJECTDIR)
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$(LDSCRIPT): $(CONTIKI_CPU)/cc2538.lds FORCE | $(OBJECTDIR)
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$(TRACE_CC)
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$(Q)$(CC) $(LDGENFLAGS) $< -o $@
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