initial public release of FreeRTOS port (does still need some cleanup)
Joel Bodenmann
parent
2a0dfcf1c1
commit
0bb6473f88
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/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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/**
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* @file include/gos/freertos.h
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* @brief GOS - Operating System Support header file for FreeRTOS.
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*/
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#ifndef _GOS_FREERTOS_H
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#define _GOS_FREERTOS_H
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#if GFX_USE_OS_FREERTOS
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#include "freertos/FreeRTOS.h"
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#include "config/FreeRTOSConfig.h"
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#include "freertos/semphr.h"
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#include "freertos/task.h"
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/*===========================================================================*/
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/* Type definitions */
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/*===========================================================================*/
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/**
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* bool_t,
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* int8_t, uint8_t,
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* int16_t, uint16_t,
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* int32_t, uint32_t,
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* size_t
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* TRUE, FALSE
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* are already defined by FreeRTOS
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*/
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#define TIME_IMMEDIATE 0
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#define TIME_INFINITE ((delaytime_t)-1)
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typedef int8_t bool_t;
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typedef uint32_t delaytime_t;
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typedef portTickType systemticks_t;
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typedef int32_t semcount_t;
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typedef void threadreturn_t;
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typedef portBASE_TYPE threadpriority_t;
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#define MAX_SEMAPHORE_COUNT ((semcount_t)(((unsigned long)((semcount_t)(-1))) >> 1))
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#define LOW_PRIORITY 0
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#define NORMAL_PRIORITY configMAX_PRIORITIES/2
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#define HIGH_PRIORITY configMAX_PRIORITIES-1
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/* FreeRTOS will allocate the stack when creating the thread, so pass the size instead of a working area */
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#define DECLARE_THREAD_STACK(name, sz) size_t *name = (size_t *)sz
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#define DECLARE_THREAD_FUNCTION(fnName, param) threadreturn_t fnName(void *param)
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portTickType MS2ST(portTickType ms);
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typedef struct {
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xSemaphoreHandle sem;
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semcount_t limit;
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semcount_t counter;
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} gfxSem;
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typedef xSemaphoreHandle gfxMutex;
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typedef xTaskHandl* gfxThreadHandle;
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/*===========================================================================*/
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/* Function declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define gfxHalt(msg) {}
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#define gfxExit() {}
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#define gfxAlloc(sz) pvPortMalloc(sz)
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#define gfxFree(ptr) vPortFree(ptr)
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#define gfxYield() taskYIELD()
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#define gfxSystemTicks() xTaskGetTickCount()
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#define gfxMillisecondsToTicks(ms) MS2ST(ms)
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#define gfxSystemLock() {}
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#define gfxSystemUnlock() {}
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static inline void gfxMutexInit(xSemaphoreHandle *s)
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{
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*s = xSemaphoreCreateMutex();
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vTraceSetMutexName(*s,"uGFXMutex"); // for FreeRTOS+Trace debug
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}
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#define gfxMutexDestroy(pmutex) vSemaphoreDelete(*pmutex)
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#define gfxMutexEnter(pmutex) xSemaphoreTake(*pmutex,portMAX_DELAY)
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#define gfxMutexExit(pmutex) xSemaphoreGive(*pmutex)
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void *gfxRealloc(void *ptr, size_t oldsz, size_t newsz);
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void gfxSleepMilliseconds(delaytime_t ms);
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void gfxSleepMicroseconds(delaytime_t ms);
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void gfxSemInit(gfxSem* psem, semcount_t val, semcount_t limit);
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void gfxSemDestroy(gfxSem* psem);
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bool_t gfxSemWait(gfxSem* psem, delaytime_t ms);
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void gfxSemSignal(gfxSem* psem);
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void gfxSemSignalI(gfxSem* psem);
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#define gfxSemCounterI(psem) ((psem)->counter)
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#define gfxSemCounter(psem) ((psem)->counter)
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gfxThreadHandle gfxThreadCreate(void *stackarea, size_t stacksz, threadpriority_t prio, DECLARE_THREAD_FUNCTION((*fn),p), void *param);
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#define gfxThreadWait(thread) {} // never used, not imlpemented
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#define gfxThreadMe() {} // never used, not implemented
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#define gfxThreadClose(thread) {}
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#ifdef __cplusplus
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}
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#endif
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#endif /* GFX_USE_OS_FREERTOS */
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#endif /* _GOS_CHIBIOS_H */
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@ -0,0 +1,151 @@
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/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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/**
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* @file src/gos/freertos.c
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* @brief GOS FreeRTOS Operating System support.
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*/
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#include "heivs/config.h"
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#include "gfx.h"
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#include "heivs/delay.h"
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#include "freertos/FreeRTOS.h"
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#include "config/FreeRTOSConfig.h"
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#include <string.h>
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#if configUSE_MUTEXES != 1
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#error "GOS: configUSE_MUTEXES must be defined in FreeRTOSConfig.h"
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#endif
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#if configUSE_COUNTING_SEMAPHORES != 1
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#error "GOS: configUSE_COUNTING_SEMAPHORES must be defined in FreeRTOSConfig.h"
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#endif
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void _gosInit(void)
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{
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// IMPORTANT: Check for already started scheduler here!!!
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vTaskStartScheduler();
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}
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void* gfxRealloc(void *ptr, size_t oldsz, size_t newsz)
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{
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void *np;
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if (newsz <= oldsz)
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return ptr;
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np = gfxAlloc(newsz);
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if (!np)
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return 0;
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if (oldsz) {
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memcpy(np, ptr, oldsz);
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vPortFree(ptr);
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}
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return np;
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}
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void gfxSleepMilliseconds(delaytime_t ms)
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{
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if(ms == TIME_IMMEDIATE) {
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taskYIELD();
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} else {
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vTaskDelay(ms);
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}
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}
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void gfxSleepMicroseconds(delaytime_t ms)
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{
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delay_wait_us(ms);
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}
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portTickType MS2ST(portTickType ms)
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{
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uint64_t val;
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if(configTICK_RATE_HZ == 1000) { // gain time because no test to do in most case
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return ms;
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}
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val = ms;
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val *= configTICK_RATE_HZ;
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val += 999;
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val /= 1000;
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return val;
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}
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void gfxSemInit(gfxSem* psem, semcount_t val, semcount_t limit)
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{
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if (val > limit)
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val = limit;
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psem->counter = val;
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psem->limit = limit;
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psem->sem = xSemaphoreCreateCounting(limit,val);
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vTraceSetSemaphoreName(psem->sem, "uGFXSema"); // for FreeRTOS+Trace debug
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}
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void gfxSemDestroy(gfxSem* psem)
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{
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vSemaphoreDelete(psem->sem);
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}
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bool_t gfxSemWait(gfxSem* psem, delaytime_t ms)
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{
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psem->counter--;
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if(xSemaphoreTake(psem->sem, MS2ST(ms)) == pdPASS)
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return TRUE;
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psem->counter++;
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return FALSE;
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}
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void gfxSemSignal(gfxSem* psem)
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{
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taskENTER_CRITICAL();
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if(psem->counter < psem->limit) {
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psem->counter++;
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xSemaphoreGive(psem->sem);
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}
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taskYIELD();
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taskEXIT_CRITICAL();
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}
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void gfxSemSignalI(gfxSem* psem)
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{
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portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
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if(psem->counter < psem->limit) {
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psem->counter++;
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xSemaphoreGiveFromISR(psem->sem,&xHigherPriorityTaskWoken);
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}
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}
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gfxThreadHandle gfxThreadCreate(void *stackarea, size_t stacksz, threadpriority_t prio, DECLARE_THREAD_FUNCTION((*fn),p), void *param)
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{
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xTaskHandle task = NULL;
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stacksz = (size_t)stackarea;
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if (stacksz < configMINIMAL_STACK_SIZE)
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stacksz = configMINIMAL_STACK_SIZE;
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if (xTaskCreate(fn, (signed char*)"uGFX_TASK", stacksz, param, prio, &task )!= pdPASS) {
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for (;;);
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}
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return task;
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}
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#endif /* GFX_USE_OS_FREERTOS */
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/** @} */
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#endif /* USE_UGFX */
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