samd21_dmac_desc[0].btctrl,
samd21_dmac_desc[0].btcnt,
samd21_dmac_desc[0].srcaddr,
samd21_dmac_desc[0].dstaddr,
samd21_dmac_desc[0].descaddr);
fflush(stdout);
samd21_dmac_desc[0].btctrl,
samd21_dmac_desc[0].btcnt,
samd21_dmac_desc[0].srcaddr,
samd21_dmac_desc[0].dstaddr,
samd21_dmac_desc[0].descaddr);
fflush(stdout);