/*
* ======== dev_init ========
* Purpose:
* Initialize DEV's private state, keeping a reference count on each call.
*/
bool dev_init(void)
{
bool cmm_ret, dmm_ret, ret = true;
DBC_REQUIRE(refs >= 0);
if (refs == 0) {
cmm_ret = cmm_init();
dmm_ret = dmm_init();
ret = cmm_ret && dmm_ret;
if (!ret) {
if (cmm_ret)
cmm_exit();
if (dmm_ret)
dmm_exit();
}
}
if (ret)
refs++;
DBC_ENSURE((ret && (refs > 0)) || (!ret && (refs >= 0)));
return ret;
}
/*****************************************************************************
* Description:
* add funtion description here
* Parameters:
* description for each argument, new argument starts at new line
* Return:
* what does this function returned?
*****************************************************************************/
rt_err_t fh_dma_mem_init(rt_uint32_t *mem_start, rt_uint32_t size)
{
// return rt_memheap_init(&dma_heap,"dma_heap",mem_start,size);
dma_handle = cmm_init((unsigned char *)mem_start, size);
return dma_handle == 0;
}
