topic Re: printf function in the TRK-KEA128_Lab1 gives error in CodeWarrior Development Tools

printf function in the TRK-KEA128_Lab1 gives error

ddpd — Thu, 10 Sep 2015 13:05:37 GMT

I am trying to debug the code of the example Lab1. I know its not the correct way.

Just wanted to ensure the correctness of the modified example program.

Basically I am trying to read and write from the UART line from my PC using a software C code.

I am getting this error

ARM_GCC_Support/ewl/EWL_C/src/sys/uart_console_io.c:200: undefined reference to `InitializeUART'

C:/Freescale/CW MCU v10.6/MCU/ARM_GCC_Support/ewl/lib/armv6-m\libuart.a(uart_console_io.o): In function `__read_console':

ARM_GCC_Support/ewl/EWL_C/src/sys/uart_console_io.c:93: undefined reference to `ReadUARTN'

C:/Freescale/CW MCU v10.6/MCU/ARM_GCC_Support/ewl/lib/armv6-m\libuart.a(uart_console_io.o): In function `__init_uart_console':

ARM_GCC_Support/ewl/EWL_C/src/sys/uart_console_io.c:200: undefined reference to `InitializeUART'

C:/Freescale/CW MCU v10.6/MCU/ARM_GCC_Support/ewl/lib/armv6-m\libuart.a(uart_console_io.o): In function `__write_console':

ARM_GCC_Support/ewl/EWL_C/src/sys/uart_console_io.c:151: undefined reference to `WriteUARTN'

mingw32-make: *** [TRK-KEA128_Lab1.elf] Error 1

I didn't get any satisfying answer from the previous blogs.

Please help me out in sorting this issue.

Thanks in advance

Re: printf function in the TRK-KEA128_Lab1 gives error

ZhangJennie — Tue, 15 Sep 2015 06:58:24 GMT

Hi,

I just downloaded TRK-KEA128_LABTS1.zip from this url:

http://cache.freescale.com/files/microcontrollers/software/board_support_packages/TRK-KEA128_LABTS1.zip

I built it with CW10.6.4, there is no error.

if you want to use printf(), please pay attention to these points:

1. we need add

#include <stdio.h>

in your project.

2. if you want to print to console, choose ewl_hosted library model

3. "\n" is necessary to be added to the end of the string that we need printed out:

does this answer your question? If yes, please click the Correct Answer button. Thank you!

Have a great day,
Zhang Jun

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Re: printf function in the TRK-KEA128_Lab1 gives error

ddpd — Wed, 16 Sep 2015 04:09:47 GMT

Thanks ZhangJennie.

Yes I wanted to print in the console. The output was displayed in the console after changing the settings to ewl_hosted.

Re: printf function in the TRK-KEA128_Lab1 gives error

ZhangJennie — Wed, 16 Sep 2015 05:27:59 GMT

you are welcome!

Have a great day,
Zhang Jun