TMS320C6655: McBSP driver example code for TMS320C6655

Hi Shakari,

Thanks for your response,

                   As you mentioned, we have generated the PDK example in our local PC by following the steps provided in the link. After flashing the code into the C6655 device of our custom board, but we printed the same messages into the debug console as follows. 

Yet, we don't know how to utilize those API's for transferring data through McBSP port.

Can you please help on this point?

Regards,

Sivarama Raju

Chamarthi Sivaram ,

It is a loopback example. compare your screenshot with my screenshot above.

In yours, it does not print the messages from RX path.

--

First of all,

1. For custom board, you have to check the differences between the TI-EVM and your custom board.

2. Accordingly. change the code as per your custom design.

3. Make sure the loopback example first works with TX and RX path.

4. Then you can connect any AICs , A/D, D/A serial devices etc via McBSP.

Regards

Shankari G

Hi Shankari,

Thanks for your kind inputs.

1. As you mentioned, I also checked with my hardware team, regarding the changes in our custom board schematic with respect to EVM schematic. Seems like there is a change in the power sequencing compared to the EVM schematic. Will it affect the working of the present digital loop back example?

2. I also looked into the EDMA3 initialization part of the GEL file we are using. Seems like the events and interrupts of the peripheral, are disabled. please see the following code, 

OnRestart( int nErrorCode )
{
// Allows only core 0 to access EDMA controller
if (DNUM == 0)
{
// Disable EDMA3 events and interrupts and clear any pending events. */
GEL_TextOut("Disable all EDMA3 interrupts and events.\n");
// EDMA controller 0
*(int*)EDMA3_IECRH = 0xFFFFFFFF; // IECRH (disable high interrupts enable)
*(int*)EDMA3_EECRH = 0xFFFFFFFF; // EECRH (disable high events enable)
*(int*)EDMA3_ICRH = 0xFFFFFFFF; // ICRH (clear high interrupts pending)
*(int*)EDMA3_ECRH = 0xFFFFFFFF; // ECRH (clear high events pending)

*(int*)EDMA3_IECR = 0xFFFFFFFF; // IECR (disable low interrupts enable)
*(int*)EDMA3_EECR = 0xFFFFFFFF; // EECR (disable low events enable)
*(int*)EDMA3_ICR = 0xFFFFFFFF; // ICR (clear low interrupts pending)
*(int*)EDMA3_ECR = 0xFFFFFFFF; // ECR (clear low events pending)
}

// Disable interrupts
IER = 0;
}

What all things, I need to consider while setting the GEL file, with respect to the change in schematic? Can you please elaborate on this?

Regards,

Sivarama Raju

Ok Shankari