Steve,
First, are you able to manually trigger the EDMA transfer with current EDMA setup please (such as by writing ESR register, section 2.4.1.2 in EDMA user guide)?
If manually-triggering is working, you could check how the EDMA is being triggered by event ( section 2.4.1.1 in EDMA user guide).
You can check ER and EER to see if EDMA could receive the event correctly.
If EDMA could not receive the event, you need to check how CIC1 has been set, which is not shown in your code attached.
You may need to map a CIC1 input (system event) to CIC1 host output (CIC1_OUT0) and trigger the system event input which could trigger the event connected to CIC1_OUT0, such as EDMA channel 43.
Hope you could narrow down the issue with several debugging steps.
