TMS320F28P650DK: Difficulty in flashing through MCAN

Arghyadeep Kolay

Part Number: TMS320F28P650DK
Other Parts Discussed in Thread: C2000WARE, TMDSHSECDOCK, TCAN1462EVM

Tool/software:

Hello Experts,

Introduction:

I am using TMS320F28P650DK9 control card. I am trying to flash the led_blinky code from MCAN. To complete the circuit, we are using PCAN-USB Pro FD, TCAN1462 as transceiver and the Control card. I am also using the can_flash_programmer provided with C2000ware to flash it using the command line.

Issue:

The console gives proper output about the hex files being loaded. I can see the kernel loaded and application loaded output in the console. But the LEDs in the control card still do not respond. I believe there is some error in the connections that we have made. As per the kernel code, we are using GPIO 4 as Tx and GPIO 5 as Rx (MCAN_BOOT_ALT3_SENDTEST). I followed the steps as instructed in the CAN Flash Programming documentation, but still there is no change.

Confusion:

I am a bit confused if I should use GPIO (4,5) or GPIO (30,31) as mentioned in the schematics for pins being CAN_A_RX and CAN_A_TX.

Exact help that I need from the forum:

Someone please guide me through the circuit connections of Transceiver (Vio, STB, PU/PD for STB, etc) and pin selection in control card connected to TMDSHSECDOCK.

over 1 year ago

0 Hareesh Janakiraman over 1 year ago

TI__Guru* 95315 points

The connection between the MCU and the transceiver is fairly straightforward. You can look at the LaunchPad schematics as a reference. Also refer to the debug tips in www.ti.com/lit/SPRACU9.

0 Hareesh Janakiraman over 1 year ago in reply to Hareesh Janakiraman

TI__Guru* 95315 points

Apart from the normal connections, STB pin should low and VIO should be tied to 3.3v.

Arghyadeep Kolay said:
The console gives proper output about the hex files being loaded. I can see the kernel loaded and application loaded output in the console.

Doesn't the above mean the kernel and the application have been transferred into the memory of the MCU?

Have you tried running a C2000ware example?

0 Skyler Baumer over 1 year ago in reply to Hareesh Janakiraman

TI__Expert 6545 points

Hello,

Is the PCAN-USB Pro FD blinking green during the kernel and application load? If so, can you see the application image programmed in Flash after the host programmer indicates that it has completed?

Kind regards,

Skyler

0 Arghyadeep Kolay over 1 year ago in reply to Skyler Baumer

Prodigy 30 points

No the PCAN-USB Pro FD is blinking red while the transfer.

0 Arghyadeep Kolay over 1 year ago in reply to Hareesh Janakiraman

Prodigy 30 points

Hareesh Janakiraman said:
Doesn't the above mean the kernel and the application have been transferred into the memory of the MCU?

Have you tried running a C2000ware example

This actually means that the data has been successfully transferred from by Laptop to PCAN-USB Pro FD. To confirm this, I even tried running the programmer connected to PCAN while removing further connections to transceiver and the MCU and got the same result in the host side console. When we checked with the MSO, we observed desirable data in CANH and CANL but not in CANTx and CANRx. So we suspected an issue in the Transceiver connection.

+1 Hareesh Janakiraman over 1 year ago in reply to Arghyadeep Kolay

TI__Guru* 95315 points

Arghyadeep,

You have to debug this step-by-step. Otherwise, you may not make progress.

Before you attempt updating the Flash over MCAN, first check if the MCAN module is able to communicate with PCAN-USB. Only if this works should you attempt firmware update via MCAN.

Please download my Application report http://www.ti.com/lit/SPRACE5. This doc explains how to remap the GPIO pins for peripheral functions.

Please download my Application report http://www.ti.com/lit/SPRACU9 and read through the Debug tips carefully. Most CAN issues can be resolved by going through this checklist.

I presume you are using the TCAN1462EVM. Make sure you connect the GND of the Control card to the GND of the EVM.

The TRM chapter explains the CAN protocol implementation in the MCU. i.e. it explains the functions of the various registers/bits. However, it does not explain the protocol itself. For protocol information, refer to these excellent videos:

https://training.ti.com/automotive-can-overview

https://training.ti.com/ti-precision-labs-canlinsbc-can-and-can-fd-protocol?context=1139747-1138099-1139707-1138111

https://training.ti.com/ti-precision-labs-canlinsbc-can-and-can-fd-overview?context=1139747-1138099-1139707-1138109

https://training.ti.com/ti-precision-labs-canlinsbc-can-physical-layer?context=1139747-1138099-1139707-1138110