STM32第7章嵌入式实时操作系统FreeRTOS 学习资料.ppt

21天学嵌入式开发 第七讲：嵌入式实时操作系统FreeRTOS 课程安排 嵌入式实时操作系统FreeRTOS简介 嵌入式操作系统基本概念 FreeRTOS的API模块 嵌入式实时操作系统FreeRTOS简介 FreeRTOS是一个可移植的、开源的小型实时内核。 FreeRTOS支持的处理器架构有如下几种： ARM7, ARM9, Cortex-M3 Atmel AVR32 Atmel AVR Microchip PICMicro PIC18 , PIC24 , dsPIC and PIC32 MSP430 ColdFire HCS12 NEC 16 and 32 bit processors Xilinx Virtex4 FPGA 嵌入式操作系统基本概念 多任务 调度 上下文切换 实时应用和调度 FreeRTOS的API模块 定制 FreeRTOSConfig.h #ifndef FREERTOS_CONFIG_H #define FREERTOS_CONFIG_H #include something.h #define configUSE_PREEMPTION 1 #define configUSE_IDLE_HOOK 0 #define configUSE_TICK_HOOK 0 #define configCPU_CLOCK_HZ #define configTICK_RATE_HZ 250 #define configMAX_PRIORITIES 5 #define configMINIMAL_STACK_SIZE 128 #define configTOTAL_HEAP_SIZE 10240 #define configMAX_TASK_NAME_LEN 16 #define configUSE_TRACE_FACILITY 0 #define configUSE_16_BIT_TICKS 0 #define configIDLE_SHOULD_YIELD 1 #define configUSE_MUTEXES 0 #define configUSE_RECURSIVE_MUTEXES 0 #define configUSE_COUNTING_SEMAPHORES 0 #define configUSE_ALTERNATIVE_API 0 #define configCHECK_FOR_STACK_OVERFLOW 0 #define configQUEUE_REGISTRY_SIZE 10 #define INCLUDE_vTaskPrioritySet 1 #define INCLUDE_uxTaskPriorityGet 1 #define INCLUDE_vTaskDelete 1 #define INCLUDE_vTaskCleanUpResources 0 #define INCLUDE_vTaskSuspend 1 #define INCLUDE_vResumeFromISR 1 #define INCLUDE_vTaskDelayUntil 1 #define INCLUDE_vTaskDelay 1 #define INCLUDE_xTaskGetSchedulerState 1 #define INCLUDE_xTaskGetCurrentTaskHandle 1 #define INCLUDE_uxTaskGetStackHighWaterMark 0 #define configUSE_CO_ROUTINES 0 #define configMAX_CO_ROUTINE_PRIORITIES 1 #define configKERNEL_INTERRUPT_PRIORITY [dependent of processor] #define co