Add semaphore example

firmware/freertos/semaphore/FreeRTOSConfig.h

@@ -0,0 +1,108 @@
+#ifndef FREERTOS_CONFIG_H
+#define FREERTOS_CONFIG_H
+
+/* Here is a good place to include header files that are required across
+your application. */
+//#include "something.h"
+
+#define configUSE_PREEMPTION                    1
+#define configUSE_PORT_OPTIMISED_TASK_SELECTION 0
+#define configUSE_TICKLESS_IDLE                 0
+#define configCPU_CLOCK_HZ                      168000000
+#define configTICK_RATE_HZ                      1000
+#define configMAX_PRIORITIES                    10
+#define configMINIMAL_STACK_SIZE                130
+#define configTOTAL_HEAP_SIZE                   (75 * 1024)
+#define configMAX_TASK_NAME_LEN                 20
+#define configUSE_16_BIT_TICKS                  0
+#define configIDLE_SHOULD_YIELD                 1
+#define configUSE_TASK_NOTIFICATIONS            1
+#define configUSE_MUTEXES                       1
+#define configUSE_RECURSIVE_MUTEXES             0
+#define configUSE_COUNTING_SEMAPHORES           1
+#define configUSE_ALTERNATIVE_API               0 /* Deprecated! */
+#define configQUEUE_REGISTRY_SIZE               10
+#define configUSE_QUEUE_SETS                    0
+#define configUSE_TIME_SLICING                  0
+#define configUSE_NEWLIB_REENTRANT              0
+#define configENABLE_BACKWARD_COMPATIBILITY     0
+#define configNUM_THREAD_LOCAL_STORAGE_POINTERS 5
+
+/* Hook function related definitions. */
+#define configUSE_IDLE_HOOK                     0
+#define configUSE_TICK_HOOK                     0
+#define configCHECK_FOR_STACK_OVERFLOW          0
+#define configUSE_MALLOC_FAILED_HOOK            0
+
+/* Run time and task stats gathering related definitions. */
+#define configGENERATE_RUN_TIME_STATS           0
+#define configUSE_TRACE_FACILITY                0
+#define configUSE_STATS_FORMATTING_FUNCTIONS    0
+
+/* Co-routine related definitions. */
+#define configUSE_CO_ROUTINES                   0
+#define configMAX_CO_ROUTINE_PRIORITIES         1
+
+/* Software timer related definitions. */
+#define configUSE_TIMERS                        1
+#define configTIMER_TASK_PRIORITY               3
+#define configTIMER_QUEUE_LENGTH                10
+#define configTIMER_TASK_STACK_DEPTH            configMINIMAL_STACK_SIZE
+
+/* Cortex-M specific definitions. */
+#ifdef __NVIC_PRIO_BITS
+	/* __BVIC_PRIO_BITS will be specified when CMSIS is being used. */
+	#define configPRIO_BITS __NVIC_PRIO_BITS
+#else
+	/* 15 priority levels */
+	#define configPRIO_BITS                 4
+#endif
+
+/* Interrupt nesting behaviour configuration. */
+#define configKERNEL_INTERRUPT_PRIORITY         (configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS))
+#define configMAX_SYSCALL_INTERRUPT_PRIORITY    (configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS))
+#define configMAX_API_CALL_INTERRUPT_PRIORITY   (configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS))
+
+/* The lowest interrupt priority that can be used in a call to a "set priority"
+function. */
+#define configLIBRARY_LOWEST_INTERRUPT_PRIORITY 0xf
+
+/* The highest interrupt priority that can be used by any interrupt service
+routine that makes calls to interrupt safe FreeRTOS API functions.  DO NOT CALL
+INTERRUPT SAFE FREERTOS API FUNCTIONS FROM ANY INTERRUPT THAT HAS A HIGHER
+PRIORITY THAN THIS! (higher priorities are lower numeric values. */
+#define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 5
+
+/* Normal assert() semantics without relying on the provision of an assert.h header file. */
+#define configASSERT( x ) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); }
+
+/* FreeRTOS MPU specific definitions. */
+#define configINCLUDE_APPLICATION_DEFINED_PRIVILEGED_FUNCTIONS 0
+
+/* Optional functions - most linkers will remove unused functions anyway. */
+#define INCLUDE_vTaskPrioritySet                1
+#define INCLUDE_uxTaskPriorityGet               1
+#define INCLUDE_vTaskDelete                     1
+#define INCLUDE_vTaskSuspend                    1
+#define INCLUDE_xResumeFromISR                  1
+#define INCLUDE_vTaskDelayUntil                 1
+#define INCLUDE_vTaskDelay                      1
+#define INCLUDE_xTaskGetSchedulerState          1
+#define INCLUDE_xTaskGetCurrentTaskHandle       1
+#define INCLUDE_uxTaskGetStackHighWaterMark     0
+#define INCLUDE_xTaskGetIdleTaskHandle          0
+#define INCLUDE_xTimerGetTimerDaemonTaskHandle  0
+#define INCLUDE_pcTaskGetTaskName               0
+#define INCLUDE_eTaskGetState                   0
+#define INCLUDE_xEventGroupSetBitFromISR        1
+#define INCLUDE_xTimerPendFunctionCall          0
+
+/* Definitions that map the FreeRTOS port interrupt handlers to their CMSIS
+standard names. */
+#define vPortSVCHandler SVC_Handler
+#define xPortPendSVHandler PendSV_Handler
+#define xPortSysTickHandler SysTick_Handler
+
+/* A header file that defines trace macro can be included here. */
+
+#endif /* FREERTOS_CONFIG_H */

firmware/freertos/semaphore/Makefile

@@ -0,0 +1,115 @@
+#======================================================================#
+
+#Output files
+
+EXECUTABLE=firmware.elf
+BIN_IMAGE=firmware.bin
+
+#======================================================================#
+
+#Toolchain
+
+CC=arm-none-eabi-gcc
+OBJCOPY=arm-none-eabi-objcopy
+GDB=arm-none-eabi-gdb
+
+#======================================================================#
+
+#Flags
+
+CFLAGS=-g -mlittle-endian -mthumb \
+	-mcpu=cortex-m4 \
+	-mfpu=fpv4-sp-d16 -mfloat-abi=hard \
+	--specs=nano.specs \
+	--specs=nosys.specs
+CFLAGS+=-D USE_STDPERIPH_DRIVER
+CFLAGS+=-D STM32F4xx
+CFLAGS+=-D __FPU_PRESENT=1 \
+        -D ARM_MATH_CM4 \
+	-D __FPU_USED=1
+CFLAGS+=-I./
+
+
+#stm32-flash
+CFLAGS+=-Wl,-T,stm32_flash.ld
+
+#======================================================================#
+
+#Source code
+
+CFLAGS+=-I./lib/CMSIS/Include
+SRC=./lib/CMSIS/system_stm32f4xx.c
+
+#StdPeriph
+ST_LIB=./lib/STM32F4xx_StdPeriph_Driver
+
+CFLAGS+=-I$(ST_LIB)/inc
+CFLAGS+=-I./lib/CMSIS/ST/STM32F4xx/Include
+SRC+=$(ST_LIB)/src/misc.c \
+	$(ST_LIB)/src/stm32f4xx_rcc.c \
+	$(ST_LIB)/src/stm32f4xx_dma.c \
+	$(ST_LIB)/src/stm32f4xx_flash.c \
+	$(ST_LIB)/src/stm32f4xx_gpio.c \
+	$(ST_LIB)/src/stm32f4xx_usart.c \
+	$(ST_LIB)/src/stm32f4xx_tim.c\
+	$(ST_LIB)/src/stm32f4xx_spi.c\
+	$(ST_LIB)/src/stm32f4xx_i2c.c
+
+#FreeRTOS
+ARCH=CM4F
+FREERTOS=./lib/FreeRTOSV8.2.3/FreeRTOS
+
+CFLAGS+=-I$(FREERTOS)/Source/include \
+	-I$(FREERTOS)/Source/portable/GCC/ARM_$(ARCH)
+SRC+=$(FREERTOS)/Source/croutine.c \
+	$(FREERTOS)/Source/list.c \
+	$(FREERTOS)/Source/queue.c \
+	$(FREERTOS)/Source/tasks.c \
+	$(FREERTOS)/Source/timers.c \
+	$(FREERTOS)/Source/portable/MemMang/heap_4.c \
+	$(FREERTOS)/Source/portable/GCC/ARM_$(ARCH)/port.c
+
+#STM32 startup file
+STARTUP=./startup_stm32f4xx.s
+
+#Major programs
+SRC+=./main.c \
+	./usart.c
+
+#======================================================================#
+
+#Make rules
+
+#Compile
+all:$(BIN_IMAGE)
+
+$(BIN_IMAGE):$(EXECUTABLE)
+	$(OBJCOPY) -O binary $^ $@
+
+STARTUP_OBJ = startup_stm32f4xx.o
+
+$(STARTUP_OBJ): $(STARTUP) 
+	$(CC) $(CFLAGS) $^ -c $(STARTUP)
+
+$(EXECUTABLE):$(SRC) $(STARTUP_OBJ)
+	$(CC) $(CFLAGS) $^ -o $@
+
+#clean
+clean:
+	rm -rf $(EXECUTABLE)
+	rm -rf $(BIN_IMAGE)
+
+#Flash
+flash:
+	st-flash write $(BIN_IMAGE) 0x8000000
+
+#OpenOCD GDB server
+openocd:
+	openocd -f ./openocd.cfg
+
+#GNU Debugger
+gdbauto:
+	cgdb -d $(GDB) -x ./openocd_gdb.gdb
+
+#======================================================================
+.PHONY:all clean flash

firmware/freertos/semaphore/lib/CMSIS/DSP_Lib/Examples/Common/Include/math_helper.h

@@ -0,0 +1,53 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010 ARM Limited. All rights reserved.  
+*  
+* $Date:        29. November 2010  
+* $Revision: 	V1.0.3  
+*  
+* Project: 	    CMSIS DSP Library 
+*
+* Title:	    math_helper.h
+* 
+*
+* Description:	Prototypes of all helper functions required.  
+*
+* Target Processor: Cortex-M4/Cortex-M3
+*  
+* Version 1.0.3 2010/11/29 
+*    Re-organized the CMSIS folders and updated documentation.  
+*   
+* Version 1.0.2 2010/11/11  
+*    Documentation updated.   
+*  
+* Version 1.0.1 2010/10/05   
+*    Production release and review comments incorporated.  
+*  
+* Version 1.0.0 2010/09/20   
+*    Production release and review comments incorporated.  
+*  
+* Version 0.0.7  2010/06/10   
+*    Misra-C changes done 
+* -------------------------------------------------------------------- */
+
+
+#include "arm_math.h"
+
+#ifndef MATH_HELPER_H
+#define MATH_HELPER_H
+
+float arm_snr_f32(float *pRef, float *pTest,  uint32_t buffSize);  
+void arm_float_to_q12_20(float *pIn, q31_t * pOut, uint32_t numSamples);
+void arm_provide_guard_bits_q15(q15_t *input_buf, uint32_t blockSize, uint32_t guard_bits);
+void arm_provide_guard_bits_q31(q31_t *input_buf, uint32_t blockSize, uint32_t guard_bits);
+void arm_float_to_q14(float *pIn, q15_t *pOut, uint32_t numSamples);
+void arm_float_to_q29(float *pIn, q31_t *pOut, uint32_t numSamples);
+void arm_float_to_q28(float *pIn, q31_t *pOut, uint32_t numSamples);
+void arm_float_to_q30(float *pIn, q31_t *pOut, uint32_t numSamples);
+void arm_clip_f32(float *pIn, uint32_t numSamples);
+uint32_t arm_calc_guard_bits(uint32_t num_adds);
+void arm_apply_guard_bits (float32_t * pIn, uint32_t numSamples, uint32_t guard_bits);
+uint32_t arm_compare_fixed_q15(q15_t *pIn, q15_t * pOut, uint32_t numSamples);
+uint32_t arm_compare_fixed_q31(q31_t *pIn, q31_t *pOut, uint32_t numSamples);
+uint32_t arm_calc_2pow(uint32_t guard_bits);
+#endif
+