DM642EDMA

代码说明：

  This program uses the timers to trigger EDMA events. These events in turn * trigger linked EDMA parameter tables to fill a ping pong buffer structure. * Set a breakpoint on swiProcessFunc(int arg). Then open two memory windows. * Use ping as the address for one memory window and pong for the other. Then * run the application. You ll note that the program bounces between the ping * and pong buffers filling each with a value that comes from the source. The * source in this case is the SDRAM timer control register and it simulates * input data(This program uses the timers to trigger EDMA events. These events in turn* trigger linked EDMA parameter tables to fill a ping pong buffer structure.* Set a breakpoint on swiProcessFunc (int arg). Then open two memory windows.* Use ping as the address for one memory window and pong for the other. Then* run the application. You' ll note that the program bounces between the ping* and pong buffers filling each with a value that comes from the source. The* source in this case is the SDRAM timer control register and it simulates* input data)