16 bit data bus is used, I set the watermark value to 3, number of 16-bit data words that may be written after the clock edge at which the partial flag is
sampled asserted = 3 x (32/16) – 4 = 2
CyU3PGpifSocketConfigure(0, CY_U3P_PIB_SOCKET_0, 3, CyFalse, 1);
I also set only 1 DMA buffer with 8 bytes depth.
#define CY_FX_DMA_BUF_COUNT (1) /* slave Bulk channel buffer count */
#define CY_FX_DMA_TX_SIZE (8) /* DMA transfer size is set to infinite */
Then I use Control center to write 12 bytes data from master FX3 to slave FX3, it's correct that only 8 bytes can be received by slave. I expect Thread_0_DMA_Watermark (GPIO21) should be deasserted after 6 bytes data is transmitted by master but this pin's value isn't changed. Please kindly advise.
