Hi Dear @kerryzhou ,
When I try to fill my frame I'm getting an HardFault error when I fill last 30 bytes of g_frame. I think there is a constraint in somewhere for last 30 byte for g_frame but I didn't catch what is wrong. I also check frame formats in RM but I just find for Pause Frame. What is the frame format that should I use? Could you please share frame details for me? Here is how to fullfill frame content defined below:
static void ENET_BuildPtpEventFrame(void)
{
//ENET_DATA_LENGTH defined as 1000 above
uint32_t count;
uint32_t length = ENET_DATA_LENGTH - 14;
uint8_t mGAddr[6] = {0x01, 0x00, 0x5e, 0x01, 0x01, 0x1};
/* Build for PTP event message frame. */
memcpy(&g_frame[0], &mGAddr[0], 6);
/* The six-byte source MAC address. */
memcpy(&g_frame[6], &g_macAddr[0], 6);
/* The type/length: if data length is used make sure it's smaller than 1500 */
g_frame[12] = 0x08U;
g_frame[13] = 0x00U;
g_frame[0x0EU] = 0x40;
/* Set the UDP PTP event port number. */
g_frame[0x24U] = (kENET_PtpEventPort >> & 0xFFU;
g_frame[0x25U] = kENET_PtpEventPort & 0xFFU;
/* Set the UDP protocol. */
g_frame[0x17U] = 0x11U;
/* Add ptp event message type: sync message. */
g_frame[0x2AU] = ENET_PTP_SYNC_MSG;
/* Add sequence id. */
g_frame[0x48U] = 0;
g_frame[0x48U + 1] = 0;
//for(count = 1; count<length-400; count++) //Hard Error Doesn't Rise
//....
//for(count = 1; count<length-100; count++) //Hard Error Doesn't Rise
//....
//for(count = 1; count<length-34; count++) //Hard Error Doesn't Rise
//for(count = 1; count<length-33; count++) //Hard Error Doesn't Rise
//for(count = 1; count<length-32; count++) //Hard Error Doesn't Rise
//for(count = 1; count<length-31; count++) //Hard Error Doesn't Rise
for(count = 1; count<length-30; count++) //Hard Error Rises
{
g_frame[count + (0x48U + 1)] = count % 0xFFU;
}
}
For example below figure showing some details for Pause Frame. I could not find frame details for Native Ethernet PTPv2 in RM section 41.3.3.1.2. Where can I find a reference for sending multicast frame like below figure?
Thanks and Regards.
Hi Dear @kerryzhou ,
Here are the details for reproducing results:
| IDE Version | MCUXpresso v11.5.0_7232 |
| SDK Example | evkmimxrt1064_enet_txrx_ptp1588_transfer |
| Hardware | I have two 1064 evk connected with ethernet cable |
| Terminal | I used MCUXpresso Serial Terminal to see outputs |
| Cables |
|
- I just use PC to EVK test configuration to validate whether the same error occurs or not by connecting ethernet that outs from EVK to PC. In normal case, I am connecting two 1064 EVK to each other and running the attached codes.
- By the way, I found some details for Ethernet Frame in RM section 41.3.15.1 and Table 41-36. It validates out expectations. It says frame payload from starts from 14 and ends with N. But issue is still chaotic. There is no exact definition what holds for last 30 bytes. Why it doesn't permit to assign data apart from 0x00 and rising hard fault.
I hope you safe and healthy.
Thanks and Regards.
