here is my question:
i intend to use DMA transmit the data from RAM area to SPI_PUSHR, not just single trigger ablity, i do follow the instruction of UM ,Page 743, DMA channels with periodic triggering capability , but it just did not work , code is as follows:
DMAMUX_1.CHCFG.R = 0x0;// 16 DMA channel
init_edma_tcd_16();// 16 DMA channel transmit from source (RAM area)to destination(SPI_PUSHR buffer) 128bytes one time
PIT_Init(); // configure the PIT channel 2 to the corresponding perodic triggers for DMA
DMAMUX_1.CHCFG.R = 0xC3;// enable DMA channnel in periodic triggering capability
anyone ever do this function?or any suggestion? accroding to UM , we can definitly achieve the DMA channel with periodic triggering capability.