7 DMA Interrupt Priority

The DMA is used extensively in both discussed graphics projects. For Bluetooth® Low Energy LCC, the DMA transfers pixel data to the display and for the Bluetooth LE parallel 8080 project the DMA transfers pixel data and commands to the external controller. Because the DMA is an important process and the interrupts determine timing elements (see Timing), the interrupt priority is set to 0 (highest). This does not affect Bluetooth LE throughput and allows for proper graphics timing operations.