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git subrepo clone git@git.pcmuhely.hu:compi/f4ll_c.git components/f4ll_c

Browse source 
subrepo:
  subdir:   "components/f4ll_c"
  merged:   "7570c78"
upstream:
  origin:   "git@git.pcmuhely.hu:compi/f4ll_c.git"
  branch:   "master"
  commit:   "7570c78"
git-subrepo:
  version:  "0.4.0"
  origin:   "https://github.com/ingydotnet/git-subrepo"
  commit:   "5d6aba9"
This commit is contained in:
Attila Body 2019-11-20 21:24:52 +01:00
parent 9f225a2c9d
commit 5e44fa81ac
15 changed files with 1079 additions and 0 deletions
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48
components/f4ll_c/memcpydma.c Normal file
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/*
* memcpy_dma.c
*
* Created on: Oct 1, 2019
* Author: abody
*/
#include <f4ll_c/dmahelper.h>
#include <f4ll_c/memcpydma.h>
#ifndef DIAG_INTERRUPT_IN
# define DIAG_INTERRUPT_IN()
#endif
#ifndef DIAG_INTERRUPT_OUT
# define DIAG_INTERRUPT_OUT()
#endif
volatile uint8_t g_memcpyDmaBusy = 0;
static DMAINFO g_memcpyDmaInfo;
void Mcd_Init(DMA_TypeDef *dma, uint32_t stream)
{
Dma_Init(&g_memcpyDmaInfo, dma, stream);
LL_DMA_EnableIT_TC(dma, stream);
}
void * Mcd_Copy(void *dst, void const *src, size_t length)
{
LL_DMA_SetM2MSrcAddress(g_memcpyDmaInfo.dma, g_memcpyDmaInfo.stream, (uint32_t)src);
LL_DMA_SetM2MDstAddress(g_memcpyDmaInfo.dma, g_memcpyDmaInfo.stream, (uint32_t)dst);
LL_DMA_SetDataLength(g_memcpyDmaInfo.dma, g_memcpyDmaInfo.stream, (length+3)/4 );
g_memcpyDmaBusy = 1;
LL_DMA_EnableStream(g_memcpyDmaInfo.dma, g_memcpyDmaInfo.stream);
while(g_memcpyDmaBusy);
return dst;
}
void Mcd_HandleDmaIrq()
{
DIAG_INTERRUPT_IN();
if(*g_memcpyDmaInfo.isReg & g_memcpyDmaInfo.tcMask) { // DMA transfer complete
*g_memcpyDmaInfo.ifcReg = g_memcpyDmaInfo.tcMask;
LL_DMA_DisableStream(g_memcpyDmaInfo.dma, g_memcpyDmaInfo.stream);
g_memcpyDmaBusy = 0;
}
DIAG_INTERRUPT_OUT();
}