SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
When the DMA handler has completed its ‘N-1’ OCP accesses, read_count is assigned with ‘N-1’.
Step | Register/Bit Field/Programming Model | Value |
---|---|---|
Start the channel | MCSPI_CHxCTRL[0] EN | 1 |
Wait until read_count = N - 1 | ||
Disable DMA read request | MCSPI_CHxCONF[15] DMAR | 0 |
Wait until last_transfer = TRUE | ||
Stop the channel | MCSPI_CHxCTRL[0] EN | 0 |
Read the receiver register | MCSPI_RXx | 0x- |
Increment read_count +1 |
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: RXx_FULL AND read_count = N | ||
last_transfer = TRUE | ||
ENDIF |