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hi all I am using the DSK6711 and want to implement the ping-pong buffering on it.I am using the code from SPRA636A (Applications Using the TMS320C6000 Enhanced DMA.This code basically tests the reading and writing to the 2 sets of ping-pong buffers using channel 13 and 12 respectively(with the DLB=1 digital loopback mode). here the data flow is this way channel 13 -->McBSP0-->EDMA-->PING_SRC & PONG_SRC (buffers) | <--McBSP0<--EDMA<--PING_DST & PONG_DST (buffers) channel 12 The problem is with the RFRLEN & XFRLEN set to 0(1 32-bit data element)the tranfer is stopping after transfering one 32-bit element to the DST ping (and decrementing the element count in EDMA param table by one). Also with the RFRLEN & XFRLEN increased to say 10 the tranfer stops after transfering the same first element 10 times. can anyone figureout what might be the problem? thanks a lot seshu |
ping pong
Started by ●November 29, 2002
