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/*
* ===========================================================================================
*
* Filename: hal_sem.c
*
* Description: sem impl for hal driver.
*
* Version: Melis3.0
* Create: 2019-11-27 14:20:53
* Revision: none
* Compiler: GCC:version 7.2.1 20170904 (release),ARM/embedded-7-branch revision 255204
*
* Author: [email protected]
* Organization: BU1-PSW
* Last Modified: 2019-11-27 17:51:06
*
* ===========================================================================================
*/
#include <hal_sem.h>
#include <rtdef.h>
#include <log.h>
hal_sem_t hal_sem_create(unsigned int cnt)
{
return (hal_sem_t) rt_sem_create("hal_layer", cnt, RT_IPC_FLAG_FIFO);
}
int hal_sem_delete(hal_sem_t sem)
{
if (sem == NULL)
{
__err("fatal error, parameter is invalid.");
return -1;
}
rt_sem_delete(sem);
return 0;
}
int hal_sem_getvalue(hal_sem_t sem, int *val)
{
if (sem == NULL || val == NULL)
{
__err("fatal error, parameter is invalid.");
return -1;
}
rt_sem_control(sem, RT_IPC_CMD_GET_STATE, val);
return 0;
}
int hal_sem_post(hal_sem_t sem)
{
if (sem == NULL)
{
__err("fatal error, parameter is invalid.");
return -1;
}
// must be success.
rt_sem_release(sem);
return 0;
}
int hal_sem_timedwait(hal_sem_t sem, int ticks)
{
rt_err_t ret;
if (sem == NULL)
{
__err("fatal error, parameter is invalid.");
return -1;
}
ret = rt_sem_take(sem, ticks);
if (ret != RT_EOK)
{
// timeout.
return -2;
}
return 0;
}
int hal_sem_trywait(hal_sem_t sem)
{
rt_err_t ret;
if (sem == NULL)
{
__err("fatal error, parameter is invalid.");
return -1;
}
ret = rt_sem_trytake(sem);
if (ret != RT_EOK)
{
// timeout.
return -2;
}
return 0;
}
int hal_sem_wait(hal_sem_t sem)
{
rt_err_t ret;
if (sem == NULL)
{
__err("fatal error, parameter is invalid.");
return -1;
}
ret = rt_sem_take(sem, RT_WAITING_FOREVER);
if (ret != RT_EOK)
{
// timeout.
return -2;
}
return 0;
}
int hal_sem_clear(hal_sem_t sem)
{
rt_err_t ret;
if (sem == NULL)
{
__err("fatal error, parameter is invalid.");
return -1;
}
ret = rt_sem_control(sem, RT_IPC_CMD_RESET, NULL);
if (ret != RT_EOK) {
__err("rt_sem_control fail\n");
return -1;
}
return 0;
}
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