The offical µGFX repository.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

171 lines
3.4 KiB

/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
#include "gfx.h"
#include <string.h>
#if GFX_USE_OS_FREERTOS
#if INCLUDE_vTaskDelay != 1
#error "GOS: INCLUDE_vTaskDelay must be defined in FreeRTOSConfig.h"
#endif
#if configUSE_MUTEXES != 1
#error "GOS: configUSE_MUTEXES must be defined in FreeRTOSConfig.h"
#endif
#if configUSE_COUNTING_SEMAPHORES != 1
#error "GOS: configUSE_COUNTING_SEMAPHORES must be defined in FreeRTOSConfig.h"
#endif
void _gosInit(void)
{
#if !GFX_OS_NO_INIT
#error "GOS: Operating System initialization for FreeRTOS is not yet implemented in uGFX. Please set GFX_OS_NO_INIT to TRUE in your gfxconf.h"
#endif
#if !GFX_OS_INIT_NO_WARNING
#warning "GOS: Operating System initialization has been turned off. Make sure you call vTaskStartScheduler() before gfxInit() in your application!"
#endif
}
void _gosDeinit(void)
{
}
void* gfxRealloc(void *ptr, size_t oldsz, size_t newsz)
{
void *np;
if (newsz <= oldsz)
return ptr;
np = gfxAlloc(newsz);
if (!np)
return 0;
if (oldsz) {
memcpy(np, ptr, oldsz);
vPortFree(ptr);
}
return np;
}
void gfxSleepMilliseconds(delaytime_t ms)
{
const portTickType ticks = ms / portTICK_PERIOD_MS;
vTaskDelay(ticks);
}
void gfxSleepMicroseconds(delaytime_t ms)
{
const portTickType ticks = (ms / 1000) / portTICK_PERIOD_MS;
// delay milli seconds
vTaskDelay(ticks);
// microsecond resolution delay is not supported in FreeRTOS
// vUsDelay(ms%1000);
}
portTickType MS2ST(portTickType ms)
{
return (ms / portTICK_PERIOD_MS);
}
void gfxMutexInit(xSemaphoreHandle *s)
{
*s = xSemaphoreCreateMutex();
#if GFX_FREERTOS_USE_TRACE
vTraceSetMutexName(*s,"uGFXMutex"); // for FreeRTOS+Trace debug
#endif
}
void gfxSemInit(gfxSem* psem, semcount_t val, semcount_t limit)
{
if (val > limit)
val = limit;
psem->counter = val;
psem->limit = limit;
psem->sem = xSemaphoreCreateCounting(limit,val);
#if GFX_FREERTOS_USE_TRACE
vTraceSetSemaphoreName(psem->sem, "uGFXSema"); // for FreeRTOS+Trace debug
#endif
}
void gfxSemDestroy(gfxSem* psem)
{
vSemaphoreDelete(psem->sem);
}
bool_t gfxSemWait(gfxSem* psem, delaytime_t ms)
{
psem->counter--;
if (xSemaphoreTake(psem->sem, MS2ST(ms)) == pdPASS)
return TRUE;
psem->counter++;
return FALSE;
}
bool_t gfxSemWaitI(gfxSem* psem)
{
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
psem->counter--;
if (xSemaphoreTakeFromISR(psem->sem,&xHigherPriorityTaskWoken) == pdTRUE)
return TRUE;
psem->counter++;
return FALSE;
}
void gfxSemSignal(gfxSem* psem)
{
taskENTER_CRITICAL();
if (psem->counter < psem->limit) {
psem->counter++;
xSemaphoreGive(psem->sem);
}
taskYIELD();
taskEXIT_CRITICAL();
}
void gfxSemSignalI(gfxSem* psem)
{
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
if (psem->counter < psem->limit) {
psem->counter++;
xSemaphoreGiveFromISR(psem->sem,&xHigherPriorityTaskWoken);
}
}
gfxThreadHandle gfxThreadCreate(void *stackarea, size_t stacksz, threadpriority_t prio, DECLARE_THREAD_FUNCTION((*fn),p), void *param)
{
xTaskHandle task = NULL;
stacksz = (size_t)stackarea;
if (stacksz < configMINIMAL_STACK_SIZE)
stacksz = configMINIMAL_STACK_SIZE;
if (xTaskCreate(fn, "uGFX_TASK", stacksz, param, prio, &task )!= pdPASS) {
for (;;);
}
return task;
}
#endif /* GFX_USE_OS_FREERTOS */