BIT_DMA_TSF_DONE_FB2
if (isr & (buf_num ? BIT_DMA_TSF_DONE_FB1 : BIT_DMA_TSF_DONE_FB2)) {
(status & BIT_DMA_TSF_DONE_FB2)) {
} else if (status & BIT_DMA_TSF_DONE_FB2) {
(status & BIT_DMA_TSF_DONE_FB2)) {