X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fsamd21%2Fao_dma_samd21.h;h=57f54769d45258ecc32b1246067dfa5479e6369d;hb=3da00a912b07c77d06785933c92e287ab48b0f79;hp=624e7a921e600baf228db97586edb72bf2b601f5;hpb=4839569abef7f1d9592a9da5d40fe67dcc048ce1;p=fw%2Faltos

diff --git a/src/samd21/ao_dma_samd21.h b/src/samd21/ao_dma_samd21.h
index 624e7a92..57f54769 100644
--- a/src/samd21/ao_dma_samd21.h
+++ b/src/samd21/ao_dma_samd21.h
@@ -38,4 +38,12 @@ _ao_dma_done_transfer(uint8_t id);
 void
 ao_dma_dump(char *where);
 
+/*
+ * DMA is only used for SERCOM
+ */
+
+#define AO_SERCOM_DMA_BASE			0U
+#define AO_SERCOM_INPUT_DMA_ID(id)		((uint8_t) ((id) * 2U + 0U + AO_SERCOM_DMA_BASE))
+#define AO_SERCOM_OUTPUT_DMA_ID(id)		((uint8_t) ((id) * 2U + 1U + AO_SERCOM_DMA_BASE))
+
 #endif /* _AO_DMA_SAM21_H_ */