CCS/MSP432P401R: Printf doesn't work!

Mehrdad He

Part Number: MSP432P401R

Tool/software: Code Composer Studio

Hi,

I'm trying to switch the compiler on my project from TI to GNU Linaro. The first thing that doesn't work in my code after transition is the printf function.

Here is my very simple example:

/* DriverLib Includes */
#include <ti/devices/msp432p4xx/driverlib/driverlib.h>

/* Standard Includes */
#include <stdint.h>
#include <stdbool.h>
#include <math.h>
#include <stdio.h>

int main(void)
{
    volatile uint32_t ii;

    /* Halting the Watchdog */
    MAP_WDT_A_holdTimer();

    puts("Hello, world!\n");
    printf("test\n");

    /* Configuring P1.0 as output */
    MAP_GPIO_setAsOutputPin(GPIO_PORT_P1, GPIO_PIN0);

    while (1)
    {
        /* Delay Loop */
        for(ii=0;ii<5000;ii++)
        {
        }

        MAP_GPIO_toggleOutputOnPin(GPIO_PORT_P1, GPIO_PIN0);
    }
}

However, I don't see any output from the debugger? Does this have to do with Stack and Heap size? If so, how do I change them?

If not, I appreciate if you can share your experience with GNU compiler.

Thanks.

over 5 years ago

0 Chris Sterzik over 5 years ago

TI__Guru 54826 points

Hello,

Here is some additional information including Stack and Heap settings; link.

This example uses System_printf.

Regards,

Chris

0 Mehrdad He over 5 years ago in reply to Chris Sterzik

Prodigy 100 points

Here is some additional information including Stack and Heap settings; link.

Hi Chris,

Thanks for the reply. The link that you sent is empty.

Could you please send me the link again.

Best.

0 Chris Sterzik over 5 years ago in reply to Mehrdad He

TI__Guru 54826 points

Sorry about that. Please let me know if there is still a problem

Regards,

Chris

0 Mehrdad He over 5 years ago in reply to Chris Sterzik

Prodigy 100 points

I guessed maybe the issue is heap or stack size. This is my linker filer. Based on this, I'm not sure what is the current size of the heap and stack and how to increase them.

MEMORY
{
    MAIN_FLASH (RX) : ORIGIN = 0x00000000, LENGTH = 0x00040000
    INFO_FLASH (RX) : ORIGIN = 0x00200000, LENGTH = 0x00004000
    SRAM_CODE  (RWX): ORIGIN = 0x01000000, LENGTH = 0x00010000
    SRAM_DATA  (RW) : ORIGIN = 0x20000000, LENGTH = 0x00010000
}

REGION_ALIAS("REGION_TEXT", MAIN_FLASH);
REGION_ALIAS("REGION_INFO", INFO_FLASH);
REGION_ALIAS("REGION_BSS", SRAM_DATA);
REGION_ALIAS("REGION_DATA", SRAM_DATA);
REGION_ALIAS("REGION_STACK", SRAM_DATA);
REGION_ALIAS("REGION_HEAP", SRAM_DATA);
REGION_ALIAS("REGION_ARM_EXIDX", MAIN_FLASH);
REGION_ALIAS("REGION_ARM_EXTAB", MAIN_FLASH);


SECTIONS {

    /* section for the interrupt vector area                                 */
    PROVIDE (_intvecs_base_address =
        DEFINED(_intvecs_base_address) ? _intvecs_base_address : 0x0);

    .intvecs (_intvecs_base_address) : AT (_intvecs_base_address) {
        KEEP (*(.intvecs))
    } > REGION_TEXT

    /* The following three sections show the usage of the INFO flash memory  */
    /* INFO flash memory is intended to be used for the following            */
    /* device specific purposes:                                             */
    /* Flash mailbox for device security operations                          */
    PROVIDE (_mailbox_base_address = 0x200000);

    .flashMailbox (_mailbox_base_address) : AT (_mailbox_base_address) {
        KEEP (*(.flashMailbox))
    } > REGION_INFO

    /* TLV table for device identification and characterization              */
    PROVIDE (_tlv_base_address = 0x00201000);

    .tlvTable (_tlv_base_address) (NOLOAD) : AT (_tlv_base_address) {
        KEEP (*(.tlvTable))
    } > REGION_INFO

    /* BSL area for device bootstrap loader                                  */
    PROVIDE (_bsl_base_address = 0x00202000);

    .bslArea (_bsl_base_address) : AT (_bsl_base_address) {
        KEEP (*(.bslArea))
    } > REGION_INFO

    PROVIDE (_vtable_base_address =
        DEFINED(_vtable_base_address) ? _vtable_base_address : 0x20000000);

    .vtable (_vtable_base_address) : AT (_vtable_base_address) {
        KEEP (*(.vtable))
    } > REGION_DATA

    .text : {
        CREATE_OBJECT_SYMBOLS
        KEEP (*(.text))
        *(.text.*)
        . = ALIGN(0x4);
        KEEP (*(.ctors))
        . = ALIGN(0x4);
        KEEP (*(.dtors))
        . = ALIGN(0x4);
        __init_array_start = .;
        KEEP (*(.init_array*))
        __init_array_end = .;
        KEEP (*(.init))
        KEEP (*(.fini*))
    } > REGION_TEXT AT> REGION_TEXT

    .rodata : {
        *(.rodata)
        *(.rodata.*)
    } > REGION_TEXT AT> REGION_TEXT

    .ARM.exidx : {
        __exidx_start = .;
        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
        __exidx_end = .;
    } > REGION_ARM_EXIDX AT> REGION_ARM_EXIDX

    .ARM.extab : {
        KEEP (*(.ARM.extab* .gnu.linkonce.armextab.*))
    } > REGION_ARM_EXTAB AT> REGION_ARM_EXTAB

    __etext = .;

    .data : {
        __data_load__ = LOADADDR (.data);
        __data_start__ = .;
        KEEP (*(.data))
        KEEP (*(.data*))
        . = ALIGN (4);
        __data_end__ = .;
    } > REGION_DATA AT> REGION_TEXT

    .bss : {
        __bss_start__ = .;
        *(.shbss)
        KEEP (*(.bss))
        *(.bss.*)
        *(COMMON)
        . = ALIGN (4);
        __bss_end__ = .;
    } > REGION_BSS AT> REGION_BSS

    .heap : {
        __heap_start__ = .;
        end = __heap_start__;
        _end = end;
        __end = end;
        KEEP (*(.heap))
        __heap_end__ = .;
        __HeapLimit = __heap_end__;
    } > REGION_HEAP AT> REGION_HEAP

    .stack (NOLOAD) : ALIGN(0x8) {
        _stack = .;
        KEEP(*(.stack))
    } > REGION_STACK AT> REGION_STACK
	
	__StackTop = ORIGIN(REGION_STACK) + LENGTH(REGION_STACK);
    PROVIDE(__stack = __StackTop);
}

0 AartiG over 5 years ago in reply to Mehrdad He

TI__Guru**** 173310 points

Hello,

With a little bit of help from the internet (one reference here) I was able to get printf working with GNU Linaro toolchain with code similar to yours.

The main changes I made are the following:

1) In Project Properties->Build->GNU Linker->Miscellaneous, add the option --specs=rdimon.specs.

This enables semihosting for the GNU ARM libraries. Semihosting is the mechanism that enables code running on an ARM target to communicate and use the Input/Output facilities on a host computer that is running a debugger.

2) In the linker file .lds, modify the .heap section to add the __end__ symbol:

.heap : {
__heap_start__ = .;
end = __heap_start__;
_end = end;
__end = end;
__end__ = end;
KEEP (*(.heap))
__heap_end__ = .;
__HeapLimit = __heap_end__;
} > REGION_HEAP AT> REGION_HEAP

After this I was able to see the printf output in the CCS console.

Hopefully this works for you as well.

0 Mehrdad He over 5 years ago in reply to AartiG

Prodigy 100 points

Thanks for your response AartiG. I tried this, however, the project doesn't compile.

This is so weird since we are using the same example code. What is your SDK version?

BTW, here is my output log if it helps.

**** Build of configuration Debug for project gpio_toggle_output_MSP_EXP432P401R_nortos_gcc ****

/home/mehrdadh/ti/ccsv8/utils/bin/gmake -k -j 8 all -O 
 
Building file: "../gcc/startup_msp432p401r_gcc.c"
Invoking: GNU Compiler
"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/bin/arm-none-eabi-gcc" -c -mcpu=cortex-m4 -march=armv7e-m -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -D__MSP432P401R__ -DDeviceFamily_MSP432P401x -I"/home/mehrdadh/workspace_v8/gpio_toggle_output_MSP_EXP432P401R_nortos_gcc" -I"/home/mehrdadh/ti/simplelink_msp432p4_sdk_3_20_00_06/source" -I"/home/mehrdadh/ti/simplelink_msp432p4_sdk_3_20_00_06/source/third_party/CMSIS/Include" -I"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/include/newlib-nano" -I"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/include" -Og -ffunction-sections -fdata-sections -g -gdwarf-3 -gstrict-dwarf -Wall -MMD -MP -MF"gcc/startup_msp432p401r_gcc.d" -MT"gcc/startup_msp432p401r_gcc.o" -std=c99  -o"gcc/startup_msp432p401r_gcc.o" "../gcc/startup_msp432p401r_gcc.c"
Finished building: "../gcc/startup_msp432p401r_gcc.c"
 
Building file: "../gpio_toggle_output.c"
Invoking: GNU Compiler
"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/bin/arm-none-eabi-gcc" -c -mcpu=cortex-m4 -march=armv7e-m -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -D__MSP432P401R__ -DDeviceFamily_MSP432P401x -I"/home/mehrdadh/workspace_v8/gpio_toggle_output_MSP_EXP432P401R_nortos_gcc" -I"/home/mehrdadh/ti/simplelink_msp432p4_sdk_3_20_00_06/source" -I"/home/mehrdadh/ti/simplelink_msp432p4_sdk_3_20_00_06/source/third_party/CMSIS/Include" -I"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/include/newlib-nano" -I"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/include" -Og -ffunction-sections -fdata-sections -g -gdwarf-3 -gstrict-dwarf -Wall -MMD -MP -MF"gpio_toggle_output.d" -MT"gpio_toggle_output.o" -std=c99  -o"gpio_toggle_output.o" "../gpio_toggle_output.c"
Finished building: "../gpio_toggle_output.c"
 
Building file: "../system_msp432p401r.c"
Invoking: GNU Compiler
"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/bin/arm-none-eabi-gcc" -c -mcpu=cortex-m4 -march=armv7e-m -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -D__MSP432P401R__ -DDeviceFamily_MSP432P401x -I"/home/mehrdadh/workspace_v8/gpio_toggle_output_MSP_EXP432P401R_nortos_gcc" -I"/home/mehrdadh/ti/simplelink_msp432p4_sdk_3_20_00_06/source" -I"/home/mehrdadh/ti/simplelink_msp432p4_sdk_3_20_00_06/source/third_party/CMSIS/Include" -I"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/include/newlib-nano" -I"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/include" -Og -ffunction-sections -fdata-sections -g -gdwarf-3 -gstrict-dwarf -Wall -MMD -MP -MF"system_msp432p401r.d" -MT"system_msp432p401r.o" -std=c99  -o"system_msp432p401r.o" "../system_msp432p401r.c"
Finished building: "../system_msp432p401r.c"
 
Building target: "gpio_toggle_output_MSP_EXP432P401R_nortos_gcc.out"
Invoking: GNU Linker
"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/bin/arm-none-eabi-gcc" -D__MSP432P401R__ -DDeviceFamily_MSP432P401x -Og -ffunction-sections -fdata-sections -g -gdwarf-3 -gstrict-dwarf -Wall -march=armv7e-m -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Wl,-Map,"gpio_toggle_output_MSP_EXP432P401R_nortos_gcc.map" -static -Wl,--gc-sections -L"/home/mehrdadh/ti/simplelink_msp432p4_sdk_3_20_00_06/source" -L"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/lib/thumb/v7e-m/fpv4-sp/hard" -L"/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/lib" -march=armv7e-m -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 --specs=rdimon.specs -o"gpio_toggle_output_MSP_EXP432P401R_nortos_gcc.out" "./gpio_toggle_output.o" "./system_msp432p401r.o" "./gcc/startup_msp432p401r_gcc.o" -Wl,-T"../test.lds"  -l:"ti/display/lib/display.am4fg" -l:"ti/grlib/lib/gcc/m4f/grlib.a" -l:"third_party/spiffs/lib/gcc/m4f/spiffs.a" -l:"ti/drivers/lib/drivers_msp432p401x.am4fg" -l:"third_party/fatfs/lib/gcc/m4f/fatfs.a" -l:"ti/devices/msp432p4xx/driverlib/gcc/msp432p4xx_driverlib.a" -lgcc -lc -lm -lnosys 
makefile:152: recipe for target 'gpio_toggle_output_MSP_EXP432P401R_nortos_gcc.out' failed
/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/lib/thumb/v7e-m/fpv4-sp/hard/librdimon.a(rdimon-syscalls.o): In function `_lseek':
syscalls.c:(.text._lseek+0x0): multiple definition of `_lseek'
/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/lib/thumb/v7e-m/fpv4-sp/hard/libnosys.a(lseek.o):lseek.c:(.text._lseek+0x0): first defined here
/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/lib/thumb/v7e-m/fpv4-sp/hard/librdimon.a(rdimon-syscalls.o): In function `_close':
syscalls.c:(.text._close+0x0): multiple definition of `_close'
/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/lib/thumb/v7e-m/fpv4-sp/hard/libnosys.a(close.o):close.c:(.text._close+0x0): first defined here
/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/lib/thumb/v7e-m/fpv4-sp/hard/librdimon.a(rdimon-syscalls.o): In function `_isatty':
syscalls.c:(.text._isatty+0x0): multiple definition of `_isatty'
/home/mehrdadh/ti/ccsv8/tools/compiler/gcc-arm-none-eabi-7-2017-q4-major/arm-none-eabi/lib/thumb/v7e-m/fpv4-sp/hard/libnosys.a(isatty.o):isatty.c:(.text._isatty+0x0): first defined here
collect2: error: ld returned 1 exit status
gmake[1]: *** [gpio_toggle_output_MSP_EXP432P401R_nortos_gcc.out] Error 1
gmake: *** [all] Error 2
makefile:148: recipe for target 'all' failed

**** Build Finished ****

0 AartiG over 5 years ago in reply to Mehrdad He

TI__Guru**** 173310 points

Sorry. I had missed one step. Add the rdimon library to the --library list.

0 Mehrdad He over 5 years ago in reply to AartiG

Prodigy 100 points

Thank you so much! It worked.

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CCS/MSP432P401R: Printf doesn't work!