.

build/.gitignore

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+*
+!.gitignore
+!system_same54.c
+!Makefile
+!gcc/*

build/Makefile

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+################################################################################
+# Automatically-generated file. Do not edit!
+################################################################################
+
+ifdef SystemRoot
+	SHELL = cmd.exe
+	MK_DIR = mkdir
+else
+	ifeq ($(shell uname), Linux)
+		MK_DIR = mkdir -p
+	endif
+
+	ifeq ($(shell uname | cut -d _ -f 1), CYGWIN)
+		MK_DIR = mkdir -p
+	endif
+
+	ifeq ($(shell uname | cut -d _ -f 1), MINGW32)
+		MK_DIR = mkdir -p
+	endif
+
+	ifeq ($(shell uname | cut -d _ -f 1), MINGW64)
+		MK_DIR = mkdir -p
+	endif
+
+	ifeq ($(shell uname | cut -d _ -f 1), DARWIN)
+		MK_DIR = mkdir -p
+	endif
+endif
+
+# List the subdirectories for creating object files
+SUB_DIRS +=  \
+ \
+hpl/pm \
+build \
+hpl/osc32kctrl \
+hpl/ramecc \
+hpl/dmac \
+hal/src \
+hpl/mclk \
+hpl/systick \
+hal/utils/src \
+hpl/sercom \
+examples \
+hpl/gclk \
+hpl/oscctrl \
+build/gcc \
+hpl/core \
+hpl/cmcc \
+shared \
+shared/devices \
+shared/drivers \
+shared/util
+
+# List the object files
+OBJS +=  \
+hal/src/hal_io.o \
+hpl/systick/hpl_systick.o \
+hpl/core/hpl_core_m4.o \
+hal/utils/src/utils_syscalls.o \
+hal/src/hal_spi_m_sync.o \
+build/system_same54.o \
+hal/src/hal_delay.o \
+hpl/pm/hpl_pm.o \
+hpl/core/hpl_init.o \
+hpl/gclk/hpl_gclk.o \
+hal/utils/src/utils_list.o \
+hal/utils/src/utils_assert.o \
+hpl/dmac/hpl_dmac.o \
+hpl/oscctrl/hpl_oscctrl.o \
+hal/src/hal_usart_sync.o \
+hpl/mclk/hpl_mclk.o \
+hpl/ramecc/hpl_ramecc.o \
+hal/src/hal_init.o \
+build/gcc/startup_same54.o \
+main.o \
+hpl/osc32kctrl/hpl_osc32kctrl.o \
+examples/driver_examples.o \
+driver_init.o \
+hpl/sercom/hpl_sercom.o \
+hal/src/hal_gpio.o \
+hal/utils/src/utils_event.o \
+hal/src/hal_sleep.o \
+hal/src/hal_cache.o \
+hpl/cmcc/hpl_cmcc.o \
+atmel_start.o \
+hal/src/hal_atomic.o \
+shared/util/pdebug.o
+
+OBJS_AS_ARGS +=  \
+"hal/src/hal_io.o" \
+"hpl/systick/hpl_systick.o" \
+"hpl/core/hpl_core_m4.o" \
+"hal/utils/src/utils_syscalls.o" \
+"hal/src/hal_spi_m_sync.o" \
+"build/system_same54.o" \
+"hal/src/hal_delay.o" \
+"hpl/pm/hpl_pm.o" \
+"hpl/core/hpl_init.o" \
+"hpl/gclk/hpl_gclk.o" \
+"hal/utils/src/utils_list.o" \
+"hal/utils/src/utils_assert.o" \
+"hpl/dmac/hpl_dmac.o" \
+"hpl/oscctrl/hpl_oscctrl.o" \
+"hal/src/hal_usart_sync.o" \
+"hpl/mclk/hpl_mclk.o" \
+"hpl/ramecc/hpl_ramecc.o" \
+"hal/src/hal_init.o" \
+"build/gcc/startup_same54.o" \
+"main.o" \
+"hpl/osc32kctrl/hpl_osc32kctrl.o" \
+"examples/driver_examples.o" \
+"driver_init.o" \
+"hpl/sercom/hpl_sercom.o" \
+"hal/src/hal_gpio.o" \
+"hal/utils/src/utils_event.o" \
+"hal/src/hal_sleep.o" \
+"hal/src/hal_cache.o" \
+"hpl/cmcc/hpl_cmcc.o" \
+"atmel_start.o" \
+"hal/src/hal_atomic.o" \
+"shared/util/pdebug.o"
+
+
+# List the directories containing header files
+DIR_INCLUDES +=  \
+-I"../" \
+-I"../config" \
+-I"../examples" \
+-I"../hal/include" \
+-I"../hal/utils/include" \
+-I"../hpl/cmcc" \
+-I"../hpl/core" \
+-I"../hpl/dmac" \
+-I"../hpl/gclk" \
+-I"../hpl/mclk" \
+-I"../hpl/osc32kctrl" \
+-I"../hpl/oscctrl" \
+-I"../hpl/pm" \
+-I"../hpl/port" \
+-I"../hpl/ramecc" \
+-I"../hpl/sercom" \
+-I"../hpl/systick" \
+-I"../hri" \
+-I"../" \
+-I"../CMSIS/Core/Include" \
+-I"../include" \
+-I"../shared" \
+-I"../shared/drivers" \
+-I"../shared/devices" \
+-I"../shared/util"
+
+# List the dependency files
+DEPS := $(OBJS:%.o=%.d)
+
+DEPS_AS_ARGS +=  \
+"hal/utils/src/utils_event.d" \
+"hal/src/hal_io.d" \
+"hpl/ramecc/hpl_ramecc.d" \
+"hpl/systick/hpl_systick.d" \
+"hpl/core/hpl_core_m4.d" \
+"hal/utils/src/utils_syscalls.d" \
+"hal/src/hal_spi_m_sync.d" \
+"hal/utils/src/utils_list.d" \
+"hpl/cmcc/hpl_cmcc.d" \
+"hpl/dmac/hpl_dmac.d" \
+"hal/utils/src/utils_assert.d" \
+"hal/src/hal_delay.d" \
+"hpl/core/hpl_init.d" \
+"hpl/pm/hpl_pm.d" \
+"hpl/gclk/hpl_gclk.d" \
+"build/gcc/startup_same54.d" \
+"hal/src/hal_init.d" \
+"hal/src/hal_usart_sync.d" \
+"hpl/mclk/hpl_mclk.d" \
+"driver_init.d" \
+"hpl/osc32kctrl/hpl_osc32kctrl.d" \
+"main.d" \
+"examples/driver_examples.d" \
+"hal/src/hal_cache.d" \
+"hal/src/hal_sleep.d" \
+"hpl/sercom/hpl_sercom.d" \
+"hal/src/hal_gpio.d" \
+"hal/src/hal_atomic.d" \
+"hpl/oscctrl/hpl_oscctrl.d" \
+"build/system_same54.d" \
+"atmel_start.d" \
+"shared/util/pdebug.d"
+
+OUTPUT_FILE_NAME :=spi_sd_mmc_lib
+QUOTE := "
+OUTPUT_FILE_PATH +=$(OUTPUT_FILE_NAME).elf
+OUTPUT_FILE_PATH_AS_ARGS +=$(OUTPUT_FILE_NAME).elf
+
+vpath %.c ../
+vpath %.s ../
+vpath %.S ../
+
+# All Target
+all: $(SUB_DIRS) $(OUTPUT_FILE_PATH)
+
+# Linker target
+
+$(OUTPUT_FILE_PATH): $(OBJS)
+	@echo Building target: $@
+	@echo Invoking: ARM/GNU Linker
+	$(QUOTE)arm-none-eabi-gcc$(QUOTE) -o $(OUTPUT_FILE_NAME).elf $(OBJS_AS_ARGS) -Wl,--start-group -lm -Wl,--end-group -mthumb \
+-Wl,-Map="$(OUTPUT_FILE_NAME).map" --specs=nano.specs -Wl,--gc-sections -mcpu=cortex-m4 \
+ \
+-T"../build/gcc/same54p20a_flash.ld" \
+-L"../build/gcc"
+	@echo Finished building target: $@
+
+	"arm-none-eabi-objcopy" -O binary "$(OUTPUT_FILE_NAME).elf" "$(OUTPUT_FILE_NAME).bin"
+	"arm-none-eabi-objcopy" -O ihex -R .eeprom -R .fuse -R .lock -R .signature  \
+        "$(OUTPUT_FILE_NAME).elf" "$(OUTPUT_FILE_NAME).hex"
+	"arm-none-eabi-objcopy" -j .eeprom --set-section-flags=.eeprom=alloc,load --change-section-lma \
+        .eeprom=0 --no-change-warnings -O binary "$(OUTPUT_FILE_NAME).elf" \
+        "$(OUTPUT_FILE_NAME).eep" || exit 0
+	"arm-none-eabi-objdump" -h -S "$(OUTPUT_FILE_NAME).elf" > "$(OUTPUT_FILE_NAME).lss"
+	"arm-none-eabi-size" "$(OUTPUT_FILE_NAME).elf"
+
+
+# Compiler targets
+
+
+
+
+%.o: %.c
+	@echo Building file: $<
+	@echo ARM/GNU C Compiler
+	$(QUOTE)arm-none-eabi-gcc$(QUOTE) -x c -mthumb -DDEBUG -Os -ffunction-sections -mlong-calls -g3 -Wall -c -std=gnu99 \
+-D__SAME54P20A__ -mcpu=cortex-m4 -mfloat-abi=softfp -mfpu=fpv4-sp-d16 \
+$(DIR_INCLUDES) \
+-MD -MP -MF "$(@:%.o=%.d)" -MT"$(@:%.o=%.d)" -MT"$(@:%.o=%.o)"  -o "$@" "$<"
+	@echo Finished building: $<
+
+%.o: %.s
+	@echo Building file: $<
+	@echo ARM/GNU Assembler
+	$(QUOTE)arm-none-eabi-as$(QUOTE) -x c -mthumb -DDEBUG -Os -ffunction-sections -mlong-calls -g3 -Wall -c -std=gnu99 \
+-D__SAME54P20A__ -mcpu=cortex-m4 -mfloat-abi=softfp -mfpu=fpv4-sp-d16 \
+$(DIR_INCLUDES) \
+-MD -MP -MF "$(@:%.o=%.d)" -MT"$(@:%.o=%.d)" -MT"$(@:%.o=%.o)"  -o "$@" "$<"
+	@echo Finished building: $<
+
+%.o: %.S
+	@echo Building file: $<
+	@echo ARM/GNU Preprocessing Assembler
+	$(QUOTE)arm-none-eabi-gcc$(QUOTE) -x c -mthumb -DDEBUG -Os -ffunction-sections -mlong-calls -g3 -Wall -c -std=gnu99 \
+-D__SAME54P20A__ -mcpu=cortex-m4 -mfloat-abi=softfp -mfpu=fpv4-sp-d16 \
+$(DIR_INCLUDES) \
+-MD -MP -MF "$(@:%.o=%.d)" -MT"$(@:%.o=%.d)" -MT"$(@:%.o=%.o)"  -o "$@" "$<"
+	@echo Finished building: $<
+
+# Detect changes in the dependent files and recompile the respective object files.
+ifneq ($(MAKECMDGOALS),clean)
+ifneq ($(strip $(DEPS)),)
+-include $(DEPS)
+endif
+endif
+
+$(SUB_DIRS):
+	$(MK_DIR) "$@"
+
+clean:
+	rm -f $(OBJS_AS_ARGS)
+	rm -f $(OUTPUT_FILE_PATH)
+	rm -f $(DEPS_AS_ARGS)
+	rm -f $(OUTPUT_FILE_NAME).a $(OUTPUT_FILE_NAME).hex $(OUTPUT_FILE_NAME).bin \
+        $(OUTPUT_FILE_NAME).lss $(OUTPUT_FILE_NAME).eep $(OUTPUT_FILE_NAME).map \
+        $(OUTPUT_FILE_NAME).srec
+debug: $(OUTPUT_FILE_NAME).elf
+	@$(QUOTE)arm-none-eabi-gdb$(QUOTE) $(OUTPUT_FILE_NAME).elf -x scripts/debug.gdb
+
+push: $(OUTPUT_FILE_NAME).elf
+	@echo $(QUOTE)$(QUOTE)
+	@echo $(QUOTE)Uploading $(OUTPUT_FILE_NAME).elf...$(QUOTE)
+	@$(QUOTE)arm-none-eabi-gdb$(QUOTE) $(OUTPUT_FILE_NAME).elf -x scripts/push.gdb >/dev/null
+	@echo $(QUOTE)$(QUOTE)$(OUTPUT_FILE_NAME).elf$(QUOTE) uploaded!$(QUOTE)
+	@$(QUOTE)arm-none-eabi-size$(QUOTE) $(QUOTE)$(OUTPUT_FILE_NAME).elf$(QUOTE)
+

build/system_same54.c

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+/**
+ * \file
+ *
+ * \brief Low-level initialization functions called upon chip startup.
+ *
+ * Copyright (c) 2019 Microchip Technology Inc.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed 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 Licence 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.
+ *
+ * \asf_license_stop
+ *
+ */
+
+#include "same54.h"
+
+/**
+ * Initial system clock frequency. The System RC Oscillator (RCSYS) provides
+ *  the source for the main clock at chip startup.
+ */
+#define __SYSTEM_CLOCK (48000000)
+
+uint32_t SystemCoreClock = __SYSTEM_CLOCK; /*!< System Clock Frequency (Core Clock)*/
+
+/**
+ * Initialize the system
+ *
+ * @brief  Setup the microcontroller system.
+ *         Initialize the System and update the SystemCoreClock variable.
+ */
+void SystemInit(void)
+{
+	// Keep the default device state after reset
+	SystemCoreClock = __SYSTEM_CLOCK;
+	return;
+}
+
+/**
+ * Update SystemCoreClock variable
+ *
+ * @brief  Updates the SystemCoreClock with current core Clock
+ *         retrieved from cpu registers.
+ */
+void SystemCoreClockUpdate(void)
+{
+	// Not implemented
+	SystemCoreClock = __SYSTEM_CLOCK;
+	return;
+}