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/*
* 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"
#if GFX_USE_OS_ECOS
void _gosInit(void)
{
#if !GFX_NO_OS_INIT
#error "GOS: Operating System initialization for eCos is not yet implemented in uGFX. Please set GFX_NO_OS_INIT to TRUE in your gfxconf.h"
#else
#warning "GOS: Operating System initialization has been turned off. Make sure you call cyg_scheduler_start() before gfxInit() in your application!"
#endif
}
void _gosDeinit(void)
{
/* ToDo */
}
void gfxSleepMilliseconds(delaytime_t ms)
{
switch(ms) {
case TIME_IMMEDIATE: cyg_thread_yield(); return;
case TIME_INFINITE: cyg_thread_suspend(cyg_thread_self()); return;
default: cyg_thread_delay(gfxMillisecondsToTicks(ms)); return;
}
}
void gfxSleepMicroseconds(delaytime_t ms)
{
switch(ms) {
case TIME_IMMEDIATE: return;
case TIME_INFINITE: cyg_thread_suspend(cyg_thread_self()); return;
default: cyg_thread_delay(gfxMillisecondsToTicks(ms/1000)); return;
}
}
void gfxSemInit(gfxSem *psem, semcount_t val, semcount_t limit)
{
if (val > limit)
val = limit;
psem->limit = limit;
cyg_semaphore_init(&psem->sem, val);
}
void gfxSemDestroy(gfxSem *psem)
{
cyg_semaphore_destroy(&psem->sem);
}
bool_t gfxSemWait(gfxSem *psem, delaytime_t ms)
{
switch(ms) {
case TIME_IMMEDIATE: return cyg_semaphore_trywait(&psem->sem);
case TIME_INFINITE: return cyg_semaphore_wait(&psem->sem);
default: return cyg_semaphore_timed_wait(&psem->sem, gfxMillisecondsToTicks(ms)+cyg_current_time());
}
}
bool_t gfxSemWaitI(gfxSem *psem)
{
return cyg_semaphore_trywait(&psem->sem);
}
void gfxSemSignal(gfxSem *psem)
{
if (psem->limit == MAX_SEMAPHORE_COUNT)
cyg_semaphore_post(&psem->sem);
else {
cyg_scheduler_lock();
if (gfxSemCounterI(psem) < psem->limit)
cyg_semaphore_post(&psem->sem);
cyg_scheduler_unlock();
}
}
void gfxSemSignalI(gfxSem *psem)
{
if (psem->limit == MAX_SEMAPHORE_COUNT || gfxSemCounterI(psem) < psem->limit)
cyg_semaphore_post(&psem->sem);
}
semcount_t gfxSemCounterI(gfxSem *psem) {
semcount_t cnt;
cyg_semaphore_peek(&psem->sem, &cnt);
return cnt;
}
gfxThreadHandle gfxThreadCreate(void *stackarea, size_t stacksz, threadpriority_t prio, DECLARE_THREAD_FUNCTION((*fn),p), void *param)
{
gfxThreadHandle th;
if (!stackarea) {
if (!stacksz) stacksz = CYGNUM_HAL_STACK_SIZE_TYPICAL;
if (!(stackarea = gfxAlloc(stacksz+sizeof(cyg_thread))))
return 0;
}
if (!stacksz)
return 0;
cyg_thread_create(prio, fn, param, "uGFX", (((cyg_thread *)stackarea)+1), stacksz, &th, (cyg_thread *)stackarea);
cyg_thread_resume(th);
return th;
}
#endif /* GFX_USE_OS_ECOS */
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