Enabling SWO Debug console on RT1060

[alistair]

Hi guys,

When I load the default BSP package in Keil for the MIMXRT1060-EVK, my debug console is automatically configured for LPUART as below:

/* Initialize debug console. */
void BOARD_InitDebugConsole(void)
{
uint32_t uartClkSrcFreq = BOARD_DebugConsoleSrcFreq();

DbgConsole_Init(BOARD_DEBUG_UART_BASEADDR, BOARD_DEBUG_UART_BAUDRATE, BOARD_DEBUG_UART_TYPE, uartClkSrcFreq);
}

I would like to change this to SWO but I'm unsure what settings to use. Is anyone able to advise?

Is there any way to auto-configure this like I can for pins/clock/peripherals?

Many thanks

[Alice_Yang]

Hello Alistair Lowe,

You can try the below steps:

1. Enable SWO pins:

#define IOMUXC_GPIO_B0_12_ARM_CM7_TRACE_CLK 0x401F816CU, 0x2U, 0, 0, 0x401F835CU
#define IOMUXC_GPIO_B0_13_ARM_CM7_TRACE_SWO 0x401F8170U, 0x2U, 0, 0, 0x401F8360U

//Set GPIO_B0_12 to TRACE CLK mode
IOMUXC_SetPinMux(IOMUXC_GPIO_B0_12_ARM_CM7_TRACE_CLK,  0U);
//Set TRACE CLK function
IOMUXC_SetPinConfig(IOMUXC_GPIO_B0_12_ARM_CM7_TRACE_CLK, 0x10B0u);

//Set GPIO_B0_13 to TRACE SWO mode
IOMUXC_SetPinMux(IOMUXC_GPIO_B0_13_ARM_CM7_TRACE_SWO, 0U);
//Set TRACE SWO function 
IOMUXC_SetPinConfig(IOMUXC_GPIO_B0_13_ARM_CM7_TRACE_SWO, 0x10B0u); ‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

2. Set SWO Trace clock:

CLOCK_EnableClock (kCLOCK_Trace); //Enable TRACE CLK

/* Set TRACE_PODF. */
CLOCK_SetDiv(kCLOCK_TraceDiv, 0); 
/* Set Trace clock source. */
CLOCK_SetMux(kCLOCK_TraceMux, 3); ‍‍‍‍‍‍‍‍‍‍‍‍

3. Configuration IDE：

enter debug mode, open View-> Serial Windows -> Debug(printf) Viewer :

4. add send code, for example :

while (1)
{
    ITM_SendChar('b');
    ITM_SendChar('C');
    ITM_SendChar('D');
}

Have a great day,
TIC

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[alistair]

Thank you Alice,

This code turns on the SWO but I think the pins are wrong. On the MIMXRT1060-EVK, the JTAG_TDO is on pin GPIO_AD_B0_08 etc. I think it was changed from the 1052 EVK. Are you able to provide settings for these pins?

[Alice_Yang]

Hi Alistair Lowe,

Yes, it uses GPIO_AD_B0_10,  my code just  demonstrate the steps, you can refer to your schematic of your board

and reference manual to configuration .

Have a great day,
TIC

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