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altos/stm32f1: Add DMA and SPI drivers
[fw/altos]
/
src
/
samd21
/
ao_dma_samd21.h
diff --git
a/src/samd21/ao_dma_samd21.h
b/src/samd21/ao_dma_samd21.h
index 624e7a921e600baf228db97586edb72bf2b601f5..57f54769d45258ecc32b1246067dfa5479e6369d 100644
(file)
--- 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);
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_ */
#endif /* _AO_DMA_SAM21_H_ */