SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
ISRs are implemented to count the expected number of interrupts (for example, EDMA, mailbox, timer) and check for extra or missing interrupts where possible. For example, if the ARP32_INTn_IRQSTATUS[31:0] EVENT bit field is set, then at least one of the source registers is set as well. Or, if an EDMA interrupt is received, then at least one of the CIPR bits is set. For EDMA interrupts, software tracks DMAs submitted versus DMAs completed.