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changed printouts (calculation of transfer speed corrected)

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This commit is contained in:
Markus Fröschle
2013-08-05 19:39:18 +00:00
parent 3a06fa9465
commit 080c18f7d8
1 changed files with 5 additions and 5 deletions
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10
sources/dma.c
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@@ -16,11 +16,11 @@ extern char _SYS_SRAM[];
void *dma_memcpy(void *dst, void *src, size_t n) void *dma_memcpy(void *dst, void *src, size_t n)
{ {
int ret; int ret;
int speed; int time;
int32_t start = MCF_SLT_SCNT(0); int32_t start = MCF_SLT_SCNT(0);
int32_t end; int32_t end;
xprintf("doing memory to memory DMA from %p to %p (%x bytes)\r\n", src, dst, n); xprintf("doing memory to memory DMA from %p to %p (0x%x bytes)\r\n", src, dst, n);
ret = MCD_startDma(0, src, n, dst, n, n, 1, DMA_ALWAYS, 7, MCD_SINGLE_DMA|MCD_TT_FLAGS_CW|MCD_TT_FLAGS_RL|MCD_TT_FLAGS_SP, 0); ret = MCD_startDma(0, src, n, dst, n, n, 1, DMA_ALWAYS, 7, MCD_SINGLE_DMA|MCD_TT_FLAGS_CW|MCD_TT_FLAGS_RL|MCD_TT_FLAGS_SP, 0);
if (ret == MCD_OK) if (ret == MCD_OK)
@@ -66,9 +66,9 @@ void *dma_memcpy(void *dst, void *src, size_t n)
end = MCF_SLT_SCNT(0); end = MCF_SLT_SCNT(0);
speed = n / (start - end) / 132 / 100; time = (start - end) / 132 / 1000;
xprintf("took %d ms (%d.%d Mbytes/second)\r\n", xprintf("took %d ms (%d.%d Mbytes/second)\r\n",
(start - end) / 132 / 1000, speed / 10, speed % 10); time, n / time / 1000, n / time % 1000);
#ifdef _NOT_USED_ #ifdef _NOT_USED_
__asm__ __volatile__("move.w sr,d0\n\t" __asm__ __volatile__("move.w sr,d0\n\t"
"stop #0x270\n\t" "stop #0x270\n\t"
@@ -92,7 +92,7 @@ int dma_init(void)
xprintf("DMA API initialized. Tasks are at %p\r\n", SYS_SRAM); xprintf("DMA API initialized. Tasks are at %p\r\n", SYS_SRAM);
// test // test
dma_memcpy((void *) 0x1e000000, (void *) 0xe0700000, 0x100000); /* copy one megabyte of flash to RAM */ dma_memcpy((void *) 0x1e000000, (void *) 0x10700000, 0x100000); /* copy one megabyte of flash to RAM */
xprintf("DMA finished\r\n"); xprintf("DMA finished\r\n");
return 1; return 1;