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CPU==GPIFII : How to create multi DMA ch
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CPU==GPIFII : How to create multi DMA ch

sumitsu posted on 24 Oct 2012 12:28 AM PST
Member
3 Forum Posts
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 );


Re: CPU==GPIFII : How to create multi DMA ch

sumitsu posted on 24 Oct 2012 12:32 AM PST
Member
3 Forum Posts


CPU==GPIFII : How to create multi DMA ch

sumitsu posted on 24 Oct 2012 12:45 AM PST
Member
3 Forum Posts
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 );

Re: CPU==GPIFII : How to create multi DMA ch

RSKV posted on 24 Oct 2012 02:17 AM PST
Cypress Employee
655 Forum Posts

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.



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