As the picture shows, PPI works at internal frame synchronization mode.
Timer0 and timer1 has the same configuration:400 clocks period, 4 clocks width,PWM_CLK is active.
PPI_COUNT = 20-1; PPI_FRAME = 1;
When I use PPI_FS1 only(PPI_CONTROL = 0x780E) ,the communication is all right,
When I use PPI_FS1 and PPI_FS2(PPI_CONTROL = 0x781E) ,the DATA are still right,but PPI_FS2 and PPI_FS1 are not synchronous,why?
BF537 and FPGA use different crystal oscillator, will it be the reason?
I am looking forward to your answers. Thanks