SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
When the DMA handler has completed its ‘N’ OCP accesses, write_count is assigned with ‘N’.
Step | Register/Bit Field/Programming Model | Value |
---|---|---|
Start the channel | MCSPI_CHxCTRL[0] EN | 1 |
Wait until write_count = N | ||
Disable DMA write request | MCSPI_CHxCONF[14] DMAW | 0 |
Wait until last_transfer = TRUE | ||
Wait for end of transfer | MCSPI_CHxSTAT[2] EOT | =1 |
Stop the channel | MCSPI_CHxCTRL[0] EN | 0 |
Step | Register/Bit Field/Programming Model | Value |
---|---|---|
Read MCSPI_IRQSTATUS | MCSPI_IRQSTATUS | 0x- |
Write MCSPI_IRQSTATUS to reset channel status bits | MCSPI_IRQSTATUS[channel x bits] | 0b1111 |
IF: TXx_EMPTY AND write_count = N | ||
last_transfer = TRUE | ||
ENDIF |