diff options
| -rw-r--r-- | chip/stm32/dma.c | 25 | ||||
| -rw-r--r-- | chip/stm32/dma.h | 7 |
2 files changed, 29 insertions, 3 deletions
diff --git a/chip/stm32/dma.c b/chip/stm32/dma.c index fe5bdd55d6..2f0f868e47 100644 --- a/chip/stm32/dma.c +++ b/chip/stm32/dma.c @@ -3,6 +3,8 @@ * found in the LICENSE file. */ +#include "board.h" +#include "console.h" #include "dma.h" #include "registers.h" #include "timer.h" @@ -104,8 +106,25 @@ int dma_bytes_done(struct dma_channel *chan, int orig_count) return orig_count - REG32(&chan->cndtr); } -/* Hide this code behind an undefined CONFIG for now */ -#ifdef CONFIG_DMA_TEST + +#ifdef CONFIG_DMA_HELP +void dma_dump(unsigned channel) +{ + struct dma_channel *chan; + struct dma_ctlr *dma; + + /* Get a pointer to the correct controller and channel */ + ASSERT(channel < DMA_NUM_CHANNELS); + dma = (struct dma_ctlr *)STM32_DMA1_BASE; + + chan = dma_get_channel(channel); + CPRINTF("ccr=%x, cndtr=%x, cpar=%x, cmar=%x\n", chan->ccr, + chan->cndtr, chan->cpar, chan->cmar); + CPRINTF("chan %d, isr=%x, ifcr=%x\n", + channel, + (dma->isr >> (channel * 4)) & 0xf, + (dma->ifcr >> (channel * 4)) & 0xf); +} void dma_check(int channel, char *buff) { @@ -163,7 +182,7 @@ void dma_test(void) CPRINTF("%d/%d ", periph[i], memory[i]); CPRINTF("\ncount=%d\n", REG32(&chan->cndtr)); } -#endif /* CONFIG_TEST */ +#endif /* CONFIG_DMA_HELP */ void dma_init(void) { diff --git a/chip/stm32/dma.h b/chip/stm32/dma.h index caf6c6228a..106d16d76b 100644 --- a/chip/stm32/dma.h +++ b/chip/stm32/dma.h @@ -146,6 +146,13 @@ void dma_go(struct dma_channel *chan); void dma_check(int channel, char *buff); /** + * Dump out imformation about a dma channel + * + * @param channel Channel number to read (DMAC_...) + */ +void dma_dump(unsigned channel); + +/** * Testing: Test that DMA works correctly for memory to memory transfers */ void dma_test(void); |