AM62A7: How can control GPIO to toggole its level in tiboot3.bin

Hello,
For debugging R5-SPL (tiboot3.bin), I'd recommend
- log from serial port
As noted in code snippet below, uart log would become available afterwards...
git.ti.com/gitweb
- JTAG debugger
In case it is necessary to debug the code where uart console is not available yet...
Best,
-Hong

But i dont know why my uart canot print.As also my jtag cannot connect.

I have ask the question in e2e,but there is not valid solution for it.

SO I try to use GPIO find out why uart can not print.

My uart device configuration have paste in my question.The replyer dont say it have problem.

The following function can work if it is in tiboot3 of sbl1.But tiboot3 of uboot can not work?

int main()
{
int32_t status;

Bootloader_profileReset();
TXEN();
// PowerClock_init();

}

void TXEN(void)
{

uint32_t loopcnt = 5, delaySec = 1;
uint32_t gpioBaseAddr, pinNum;
*((volatile uint32_t*)0x4081008) = 0x68EF3490U;
*((volatile uint32_t*)0x408100C) = 0xD172BC5AU;
*((volatile uint32_t*)0x4085008) = 0x68EF3490U;
*((volatile uint32_t*)0x408500C) = 0xD172BC5AU;

*((volatile int32_t*)0x04084040) |= 0x00050007U;

*((volatile uint32_t*)0x4081008) = 0;
*((volatile uint32_t*)0x408100C) = 0;
*((volatile uint32_t*)0x4085008) = 0;
*((volatile uint32_t*)0x408500C) = 0;

// gpioBaseAddr = (uint32_t) AddrTranslateP_getLocalAddr(CANEN_BASE_ADDR);
// pinNum = CANEN_PIN;
// GPIO_setDirMode(gpioBaseAddr, pinNum, GPIO_DIRECTION_OUTPUT);
//
// GPIO_pinWriteHigh(gpioBaseAddr, pinNum);

///dir
*((volatile uint32_t*)0x4201010) &= ~(1<<16);
*((volatile uint32_t*)0x420101C) |= (1<<16);///clr
*((volatile uint32_t*)0x4201018) |= 1<<16;
}

Hello,
1/. Is it TI reference board or customer board?
2/. If it is TI board, serial log from UART port would work in R5-SPL (tiboot3.bin) in Linux SDK.

Best,
-Hong

It is customer board.And it's UART port change to main uart0

Hello,
The main_uart0 is used for u-boot serial terminal on TI reference AM62A-SK board.
Some relevant u-boot DT node for main_uart0 for AM62A-SK for your reference:
git.ti.com/.../k3-am62a-main.dtsi
git.ti.com/.../k3-am62a7-sk.dts
git.ti.com/.../k3-am62a7-sk.dts
Best,
-Hong