Kinetis Software Development KitのトピックRe: TWR-K64F120(KDS) UART5 ISSUE

TWR-K64F120(KDS) UART5 ISSUE

kooroshhajiani — Fri, 05 Feb 2016 16:39:04 GMT

I can run the Hello World demo on TWR-k64f120 board(KDS) using UART1 as debug port and it works and communicates to PC using Virtual COM port.

When I try to switch to UART5 , by doing the following:

Port_HAL_SetMuxMode(PORTE,9u,kPortMuxAlt3);

Port_HAL_SetMuxMode(PORTE,8u,kPortMuxAlt3);

AS I step through the code, when it gets to Port_HAL_SetMuxMode it hangs in some ISR that basically just spins forever (default ISR).

I can't tell which ISR it is in.

Actually this demo seems to work only for UART1 , I TRIED THIS FOR ANYOTHER UART and it does the same thing.

I'm running out of ideas and need help with this.

Please advice.

Thanks,

Koorosh Hajiani

Re: TWR-K64F120(KDS) UART5 ISSUE

Jorge_Gonzalez — Fri, 05 Feb 2016 17:43:15 GMT

Hello Koorosh Hajiani:

Most peripheral modules require a clock gate to be enabled first, otherwise any access to the related registers triggers a hardfault. In your case you are most probably missing the clock gate for PORTE, like this:

CLOCK_SYS_EnablePortClock(PORTE_IDX)

Best Regards!
Jorge Gonzalez

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: TWR-K64F120(KDS) UART5 ISSUE

kooroshhajiani — Fri, 05 Feb 2016 19:31:30 GMT

Thank you Jorge ,

You are correct.

The code is not hanging anymore.

I'm trying to communicate using the DB9 Connector on TWR-SER2 board instead of the virtual com port (open cds), That's why I needed to configure UART5 on TWR-K64F120 instead of UART1 which is the default UART for the demo as suggested by Robin_Shen earlier which makes sense.

I configured UART5 and connected DB9 to a Serial_USB jack to the PC (DEVICE MANAGER ASSIGNS A COM PORT FOR THE JACK) and there is nothing on the terminal.

Any Ideas what is missing here. Jumpers setting ? Configuration?

Thanks

Koorosh Hajiani

Re: TWR-K64F120(KDS) UART5 ISSUE

DavidS — Fri, 05 Feb 2016 19:46:34 GMT

Hi Koorosh,

I'm assuming you are using the KDS_3.1+KSDK_1.3 and the hello world for C:\Freescale\KSDK_1.3.0\examples\twrk64f120m\demo_apps\hello_world\kds .

I had to do the following modifications to get the TWR-K64F+TWR-SER working for UART5 to the DB-9 connector.

hardware_init.c

void hardware_init(void) {
  /* enable clock for PORTs */
  CLOCK_SYS_EnablePortClock(PORTA_IDX);
  CLOCK_SYS_EnablePortClock(PORTC_IDX);
#if 1 //DES 1=needed when UART5 of TWR-K64F used with TWR-SER card, 0=default code
  CLOCK_SYS_EnablePortClock(PORTE_IDX);
#endif
  /* Init board clock */
  BOARD_ClockInit();
  dbg_uart_init();
}

board.h

/* The UART to use for debug messages. */

#ifndef BOARD_DEBUG_UART_INSTANCE

#if 0 //DES 1=UART1 (VCOM)...default code, 0=UART5(TWR-SER)...test code

#define BOARD_DEBUG_UART_INSTANCE 1

#define BOARD_DEBUG_UART_BASEADDR UART1

#else

#define BOARD_DEBUG_UART_INSTANCE 5

#define BOARD_DEBUG_UART_BASEADDR UART5

#endif

Regards,

David

Re: TWR-K64F120(KDS) UART5 ISSUE

kooroshhajiani — Fri, 05 Feb 2016 20:23:26 GMT

Hi David,

Thanks for your response,

Re: TWR-K64F120(KDS) UART5 ISSUE

kooroshhajiani — Fri, 05 Feb 2016 20:33:06 GMT

Sorry forgot the other capture. So I too have the same code, yet terminal is mute.I'll scope it and see if anything coming out of the DB9 connector

board.h

There are some jumpers J10/J15 I've removed them but I don't believe they've anything to do with it

Re: TWR-K64F120(KDS) UART5 ISSUE

kooroshhajiani — Fri, 05 Feb 2016 20:35:10 GMT

Sorry forgot the other capture. So I too have the same code, yet terminal is mute.I'll scope it and see if anything coming out of the DB9 connector

board.h

There are some jumpers J10/J15 I've removed them but I don't believe they've anything to do with it

Re: TWR-K64F120(KDS) UART5 ISSUE

Jorge_Gonzalez — Mon, 08 Feb 2016 22:20:38 GMT

Hello Koorosh:

Did you get this working?

I tried TWR-SER2 with the same changes as David and it worked. In the serial board there are just 3 jumpers you need to check:

J13: 1-2

J1: 2-3

J2: 2-3

Regards!

Jorge Gonzalez

Re: TWR-K64F120(KDS) UART5 ISSUE

kooroshhajiani — Mon, 08 Feb 2016 22:27:59 GMT

Hi Jorge,

I got it working, Just played with those jumpers and used a scope to see what connects to what.

Thanks for all the help.

Koorosh Hajiani