CCS/TMS570LC4357: Flexray Drivers

Hello Robert,

You are correct that HalCoGen does not support FlexRay driver generation. As far as I am aware, there are no plans to add support for FlexRay to the HalCoGen tool. However, there are several threads within the forum that discuss developing the FlexRay drivers that you may find helpful. The one at this link e2e.ti.com/.../838495 has a zip file with some example code that could be used as a good start even though it is written for the LS20x device in the Hercules family.

Once you have a look through some of the posts and through the example code, if you still have questions, let me know and we will assist in working through any additional questions/roadblocks.

Hello Chuck,

Thanks for the response. I will try to get the example working. Do you by chance know if there is a FIBEX file associated with the example that you attached?

Robert Liu

Hello Robert,

I've reached out to one of our FlexRay experts and they state that there is no FIBEX file included. They also mentioned that they have an example for TMS570LS3137 that they developed for the rail industry. They are looking at stripping it down to the basics for simplicity and will post that once they have it completed.

Hello Robert,

Attached is the sample project for Flexray on TMS570LS3137. This project can be use for any node in your Flexray network, but you need to modify the node number in main().

Regards,

QJ

6646.TMS570LS3137_FlexRay_Example.zip

Hello QJ Wang,

I know its been a long hiatus since we last discussed flexray. However I tried picking up the code you have and I have some questions. When you are writing the payload for the buffers I notice that your payload size changes. However for static frames you must have the same size. Are you defining dynamic or static frames in the below piece of code? How do you differentiate a static and dynamic message definition?

// write payload for buffers
if(node <= SYNC_NODE)
{
// buffer #0
write_buffer->ibrh = 0; // input buffer number, sync buffer
(Fray_PST->WRDS[0] = sync_data[node-1][0]); // Data 1
(Fray_PST->WRDS[1] = sync_data[node-1][1]); // Data 2
Fr_TransmitTxLPdu(Fray_PST, write_buffer);
}

// buffer #DATA_BUFF_BASE
write_buffer->ibrh = DATA_BUFF_BASE; // input buffer number DATA_BUFF_BASE, data buffer
(Fray_PST->WRDS[0] = trans_data[node-1][0]); // Data 1
(Fray_PST->WRDS[1] = trans_data[node-1][1]); // Data 2
(Fray_PST->WRDS[2] = trans_data[node-1][2]); // Data 3
(Fray_PST->WRDS[3] = trans_data[node-1][3]); // Data 4
(Fray_PST->WRDS[4] = trans_data[node-1][4]); // Data 5
(Fray_PST->WRDS[5] = trans_data[node-1][5]); // Data 6
Fr_TransmitTxLPdu(Fray_PST, write_buffer);

Furthermore when I try only changing the flexray parameters for both nodes I get no communication. Compared to the example code I am able to get successful communication. See below flexray parameters. And resulting register sets:

Fr_ConfigPtr->gtu1=0x00030D40
pMicroPerCycle = 200000d

Fr_ConfigPtr->gtu2=0x00050ADA
gSyncodeMax = 5h, gMacroPerCycle = 2778d = 0ADAh

Fr_ConfigPtr->gtu3=0x00030E0E
gMacroInitialOffset = 3h, pMicroInitialOffset = 14d = Eh

FR_ConfigPtr->gtu4=0x0AD10AD0
gOffsetCorrectionStart - 1 = 2769d = AD1h, gMacroPerCycle - gdNIT - 1 = 2768d = AD0h

Fr_ConfigPtr->gtu5=0x34020005
pDecodingCorrection = 52d = 34h, pClusterDriftDamping = 2h, pDelayCompensation = 5h

Fr_ConfigPtr->gtu6=0x00510168
pdMaxDrift = 81d = 51h, pdAcceptedStartupRange = 360d = 168h

Fr_ConfigPtr->gtu7=0x0033001D
gNumberOfStaticSlots = 51d = 33h, gdStaticSlot = 29d = 1Dh

Fr_ConfigPtr->gtu8=0x01020005
gNumberOfMinislots = 258d = 102h, gdMinislot = 5h

Fr_ConfigPtr->gtu9=0x00000202
gdDynamicSlotIdlePhase = 0, gdMinislotActionPointOffset = 2, gdActionPointOffset = 2h

Fr_ConfigPtr->gtu10=0x025900D8
pRateCorrectionOut = 601d = 259h, pOffsetCorrectionOut = 216d = D8h

Fr_ConfigPtr->gtu11=0x00000000
pExternRateCorrection = 0, pExternOffsetCorrection = 0, no ext. clk. corr.

Fr_ConfigPtr->succ2=0x02061F32
gListenNoise = 2h, pdListenTimeout = 401202d = 61F32h

Fr_ConfigPtr->succ3=0x00000022
gMaxWithoutClockCorrectionFatal = 2h , passive = 2h

Fr_ConfigPtr_prtc1=0x832D059B
pWakeupPattern = 33d = 21h, gdWakeupSymbolRxWindow = 301d, BRP = 0, gdTSSTransmitter = Bh

Fr_ConfigPtr->prtc2=0x3CB4323B
gdWakeupSymbolTxLow = 60d, gdWakeupSymbolTxIdle = 180d, gdWakeupSymbolRxLow = 50d, gdWakeupSymbolRxIdle = 59d

Fr_ConfigPtr->mhdc=0x00ED0011
pLatestTransmit = 237d = 0EDh, gPayloadLengthStatic = 17d = 11h