How can I use and view ITM logs with CY8KIT-062S2-43012?

[MoNa_4784221]

I am trying to debug on the CY8KIT-062S2-43012 kit.

I've been looking into debugging options that would hopefully avoid dependence on a UART module.

Trying to run the debug on the Hello World template example using Modus Toolbox v2.2.

I added my ITM init function :

void itm_init(void)

{

CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;

/* Enable Trace debugger*/

ITM->TCR |= 1;

ITM->TER |= 1;

TPI->ACPR=0;

/* Enable write access to ITM registers. */

        ITM->LAR  = 0xC5ACCE55;

        /* Trace Port Interface Selected Pin Protocol Register. */

        TPI->SPPR = (0x02 << TPI_SPPR_TXMODE_Pos);

        /* Trace Port Interface Formatter and Flush Control Register */

        TPI->FFCR = (1 << TPI_FFCR_TrigIn_Pos);

        /* Data Watchpoint and Trace Control Register */

        DWT->CTRL = (1 << DWT_CTRL_CYCTAP_Pos)       |

                    (0xF << DWT_CTRL_POSTINIT_Pos)   |

                    (0xF << DWT_CTRL_POSTPRESET_Pos) |

                    (1 << DWT_CTRL_CYCCNTENA_Pos);

        /* Trace Privilege Register.

         * Disable access to trace channel configuration from non-privileged mode.

         */

        ITM->TPR  = 0x0;

        /* Trace Control Register */

        ITM->TCR  = (1 << ITM_TCR_TraceBusID_Pos) |

                    (1 << ITM_TCR_DWTENA_Pos)     |

                    (1 << ITM_TCR_SYNCENA_Pos)    |

                    (1 << ITM_TCR_ITMENA_Pos);

        /* Trace Enable Register */

        ITM->TER = 0x01;

}

and used the CMSIS ITM_SendChar (uint32_t) function, tried running with J-link lite + SWO-viewer, but I see that nothing happens on the SWO pin.

How can I use and view ITM logs?

[Ekta_N]

Hi MoNa_4784221​,

Please refer to the thread: PSOC6 Serial Wire Viewer in which a similar issue is addressed.

Best Regards

Ekta

[MoNa_4784221]

Hi EktaN_26​,

Thank you for response.

I did all the steps in this post but nothing happens.

1- I created a hello world template example using ModusToolbox because PSoC Creator doesn't support our kit.

2- I made sure that Debug Select SWD+SWO in the Device Configurator and built the project.

3- Exported the project to Keil uVision 5 by following the steps provided in ModusToolbox®️ 2.2 User Guide.

https://www.cypress.com/file/512716/download

4- Redirected the STDERR, STDIN, STDOUT to ITM in Keil uVision IDE's is Run-time Environment.

5- Connected the ULINKpro debugger to the J11 header CY8CKIT-062-BLE board. Rebuilt the project in uVision and started the debug session.

6- in the printf function, the debug session freezing.

7- when I paused the session, I found it in the Cy_Syslib_ProcessingFault function.

[MoNa_4784221]

[Ekta_N]

Hi,

I see you calling the printf statement even before the retarget-io is initialized. Can you please initialize the the retarget-io first and then call the printf statement and let us know if it works.

This is because the retarget-io library, enables you directly print messages on a UART terminal using printf() thus it needs to be initialized first.

Best Regards

Ekta

[MoNa_4784221]

Hi EktaN_26,

Thank you for your response.

I did that. (Attached the file code.WeTransfer "main.c" )

The debug session doesn't freeze anymore.

But still, I see that nothing happens on the SWO pin.

And nothing showed in the debug viewer.

(figure 1 & 2)

I try to connect the board using "KITPROG3 USB" to see if the debug printf messages sent through uart, I could see the logs over the uart. (figure 3&4)

So it seems that ITM is still not enabled/configured yet.

[DheerajK_81]

In your Target Options, under Debug panel, click Settings for ULink2 Pro Debugger. Check if you have enabled trace and the ports for it as highlighted in the screenshot below:

Let us know if the issue persists even after these settings have been enabled.

Regards,

Dheeraj

[MoNa_4784221]

Yes, I did that.

And the same issue persists.