2 Replies Latest reply on Oct 24, 2012 4:17 AM by rama.sai.krishna.vakkantula

    CPU==GPIFII : How to create multi DMA ch

    susumu.mitsuhashi
              GPIFII is master mode, I try to create "CY_U3P_DMA_TYPE_MANUAL_IN" DMA channel(CH1) and "CY_U3P_DMA_TYPE_MANUAL_OUT" channel(CH0). However, I can only create CH0 or CH1. When I create "CY_U3P_DMA_TYPE_MANUAL_OUT" & " _IN" channel, I write the code as below. To start the "GPIF state machine", I created "prodSckId" by using "CY_U3P_PIB_SOCKET_0" then called "CyU3PDmaChannelSetupRecvBuffer()". This procedure is fine. I got my expected function. However, it didn't run when I used "CY_U3P_PIB_SOCKET_1" instead of "CY_U3P_PIB_SOCKET_0". I want to cretae IN DMA channel(CH1) and OUT DMA channel(CH0). So, I use "CY_U3P_PIB_SOCKET_1" for CH1 and "CY_U3P_PIB_SOCKET_0" for CH0. However, it doesn't run in case of using "CY_U3P_PIB_SOCKET_1". Why? dmaCfg.size = 512; dmaCfg.count = 0; dmaCfg.prodAvailCount = 0; dmaCfg.dmaMode = CY_U3P_DMA_MODE_BYTE; dmaCfg.prodHeader = 0; dmaCfg.prodFooter = 0; dmaCfg.consHeader = 0; dmaCfg.notification = 0; dmaCfg.cb = NULL; // CH1(GPIF2 to CPU) // dmaCfg.prodSckId = CY_U3P_PIB_SOCKET_0; // OK dmaCfg.prodSckId = CY_U3P_PIB_SOCKET_1; // NG dmaCfg.consSckId = CY_U3P_CPU_SOCKET_CONS; status = CyU3PDmaChannelCreate( &glChHandleGPIFRegIn, CY_U3P_DMA_TYPE_MANUAL_IN, &dmaCfg ); // CH0(CPU to GPIF2) dmaCfg.prodSckId = CY_U3P_CPU_SOCKET_PROD; dmaCfg.consSckId = CY_U3P_PIB_SOCKET_0; status = CyU3PDmaChannelCreate( &glChHandleGPIFRegOut, CY_U3P_DMA_TYPE_MANUAL_OUT, &dmaCfg );   
        • 2. Re: CPU==GPIFII : How to create multi DMA ch
          susumu.mitsuhashi
                  Re-POST, again..... GPIFII is master mode, I try to create "CY_U3P_DMA_TYPE_MANUAL_IN" DMA channel(CH1) and "CY_U3P_DMA_TYPE_MANUAL_OUT" channel(CH0). However, I can only create CH0 or CH1. When I create "CY_U3P_DMA_TYPE_MANUAL_OUT" & " _IN" channel, I write the code as below. To start the "GPIF state machine", I created "prodSckId" by using "CY_U3P_PIB_SOCKET_0" then called "CyU3PDmaChannelSetupRecvBuffer()". This procedure is fine. I got my expected function. However, it didn't run when I used "CY_U3P_PIB_SOCKET_1" instead of "CY_U3P_PIB_SOCKET_0". I want to cretae IN DMA channel(CH1) and OUT DMA channel(CH0). So, I use "CY_U3P_PIB_SOCKET_1" for CH1 and "CY_U3P_PIB_SOCKET_0" for CH0. However, it doesn't run in case of using "CY_U3P_PIB_SOCKET_1". Why? dmaCfg.size = 512; dmaCfg.count = 0; dmaCfg.prodAvailCount = 0; dmaCfg.dmaMode = CY_U3P_DMA_MODE_BYTE; dmaCfg.prodHeader = 0; dmaCfg.prodFooter = 0; dmaCfg.consHeader = 0; dmaCfg.notification = 0; dmaCfg.cb = NULL; // CH1(GPIF2 to CPU) // dmaCfg.prodSckId = CY_U3P_PIB_SOCKET_0; // OK dmaCfg.prodSckId = CY_U3P_PIB_SOCKET_1; // NG dmaCfg.consSckId = CY_U3P_CPU_SOCKET_CONS; status = CyU3PDmaChannelCreate( &glChHandleGPIFRegIn, CY_U3P_DMA_TYPE_MANUAL_IN, &dmaCfg ); // CH0(CPU to GPIF2) dmaCfg.prodSckId = CY_U3P_CPU_SOCKET_PROD; dmaCfg.consSckId = CY_U3P_PIB_SOCKET_0; status = CyU3PDmaChannelCreate( &glChHandleGPIFRegOut, CY_U3P_DMA_TYPE_MANUAL_OUT, &dmaCfg );   
          • 3. Re: CPU==GPIFII : How to create multi DMA ch
            rama.sai.krishna.vakkantula

            Sumitsu,

               

            Could you please attach your project source code, if possible.

               

            If not, please paste the part of code where you are creating both of these channels.

               

            Thanks,

               

            sai krishna.