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Crashing during the SPI transfer on NRF52810

Hi,

The program will crash when spi transfer on NRF52810. The crash occurs in spim_xfer  function, immediately after spim_int_enable function calling,

but if i remove the handler when spi init, it will not crash. I want to know what's going on and how to solve this problem, the spi is very important for me.

And this is my project's sdk_config.h,and the sdk version is nRF5_SDK_15.0.0_a53641a. Did I miss something.

Thanks.

Parents
  • Hi,

    Have you tried debugging the application, to see if any error codes are reported from the functions?

    If this does not help, please upload code showing how you initialize and configure the SPIM peripheral. Are you using the NRFX_SPIM driver in the SDK?

    Best regards,
    Jørgen

  • What do you mean by crash? Do you get an error code? Is the device restarting?

  • Hi,

    I didn't get any error code, and the device didn't restart, but it can not execute the code and has no response.

    The pc will enter arm_startup_nrf52810.s file and lock at line 319 after the first transfer when debugging step by step. Then the system die there.

    Thanks.

    ; Copyright (c) 2009-2018 ARM Limited. All rights reserved.
    ; 
    ;     SPDX-License-Identifier: Apache-2.0
    ; 
    ; Licensed under the Apache License, Version 2.0 (the License); you may
    ; not use this file except in compliance with the License.
    ; You may obtain a copy of the License at
    ; 
    ;     www.apache.org/licenses/LICENSE-2.0
    ; 
    ; Unless required by applicable law or agreed to in writing, software
    ; distributed under the License is distributed on an AS IS BASIS, WITHOUT
    ; WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    ; See the License for the specific language governing permissions and
    ; limitations under the License.
    ; 
    ; NOTICE: This file has been modified by Nordic Semiconductor ASA.
    
                    IF :DEF: __STARTUP_CONFIG
    #include "startup_config.h"
    #ifndef __STARTUP_CONFIG_STACK_ALIGNEMENT
    #define __STARTUP_CONFIG_STACK_ALIGNEMENT 3
    #endif
                    ENDIF
    
                    IF :DEF: __STARTUP_CONFIG
    Stack_Size      EQU __STARTUP_CONFIG_STACK_SIZE
                    ELIF :DEF: __STACK_SIZE
    Stack_Size      EQU __STACK_SIZE
                    ELSE
    Stack_Size      EQU     2048
                    ENDIF
                    
                    IF :DEF: __STARTUP_CONFIG
    Stack_Align     EQU __STARTUP_CONFIG_STACK_ALIGNEMENT
                    ELSE
    Stack_Align     EQU 3
                    ENDIF
    
                    AREA    STACK, NOINIT, READWRITE, ALIGN=Stack_Align
    Stack_Mem       SPACE   Stack_Size
    __initial_sp
    
                    IF :DEF: __STARTUP_CONFIG
    Heap_Size       EQU __STARTUP_CONFIG_HEAP_SIZE
                    ELIF :DEF: __HEAP_SIZE
    Heap_Size       EQU __HEAP_SIZE
                    ELSE
    Heap_Size       EQU     2048
                    ENDIF
    
                    AREA    HEAP, NOINIT, READWRITE, ALIGN=3
    __heap_base
    Heap_Mem        SPACE   Heap_Size
    __heap_limit
    
                    PRESERVE8
                    THUMB
    
    ; Vector Table Mapped to Address 0 at Reset
    
                    AREA    RESET, DATA, READONLY
                    EXPORT  __Vectors
                    EXPORT  __Vectors_End
                    EXPORT  __Vectors_Size
    
    __Vectors       DCD     __initial_sp              ; Top of Stack
                    DCD     Reset_Handler
                    DCD     NMI_Handler
                    DCD     HardFault_Handler
                    DCD     MemoryManagement_Handler
                    DCD     BusFault_Handler
                    DCD     UsageFault_Handler
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     SVC_Handler
                    DCD     DebugMon_Handler
                    DCD     0                         ; Reserved
                    DCD     PendSV_Handler
                    DCD     SysTick_Handler
    
                    ; External Interrupts
                    DCD     POWER_CLOCK_IRQHandler
                    DCD     RADIO_IRQHandler
                    DCD     UARTE0_IRQHandler
                    DCD     TWIM0_TWIS0_IRQHandler
                    DCD     SPIM0_SPIS0_IRQHandler
                    DCD     0                         ; Reserved
                    DCD     GPIOTE_IRQHandler
                    DCD     SAADC_IRQHandler
                    DCD     TIMER0_IRQHandler
                    DCD     TIMER1_IRQHandler
                    DCD     TIMER2_IRQHandler
                    DCD     RTC0_IRQHandler
                    DCD     TEMP_IRQHandler
                    DCD     RNG_IRQHandler
                    DCD     ECB_IRQHandler
                    DCD     CCM_AAR_IRQHandler
                    DCD     WDT_IRQHandler
                    DCD     RTC1_IRQHandler
                    DCD     QDEC_IRQHandler
                    DCD     COMP_IRQHandler
                    DCD     SWI0_EGU0_IRQHandler
                    DCD     SWI1_EGU1_IRQHandler
                    DCD     SWI2_IRQHandler
                    DCD     SWI3_IRQHandler
                    DCD     SWI4_IRQHandler
                    DCD     SWI5_IRQHandler
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     PWM0_IRQHandler
                    DCD     PDM_IRQHandler
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
    
    __Vectors_End
    
    __Vectors_Size  EQU     __Vectors_End - __Vectors
    
                    AREA    |.text|, CODE, READONLY
    
    ; Reset Handler
    
    
    Reset_Handler   PROC
                    EXPORT  Reset_Handler             [WEAK]
                    IMPORT  SystemInit
                    IMPORT  __main
    
    
                    LDR     R0, =SystemInit
                    BLX     R0
                    LDR     R0, =__main
                    BX      R0
                    ENDP
    
    ; Dummy Exception Handlers (infinite loops which can be modified)
    
    NMI_Handler     PROC
                    EXPORT  NMI_Handler               [WEAK]
                    B       .
                    ENDP
    HardFault_Handler\
                    PROC
                    EXPORT  HardFault_Handler         [WEAK]
                    B       .
                    ENDP
    MemoryManagement_Handler\
                    PROC
                    EXPORT  MemoryManagement_Handler  [WEAK]
                    B       .
                    ENDP
    BusFault_Handler\
                    PROC
                    EXPORT  BusFault_Handler          [WEAK]
                    B       .
                    ENDP
    UsageFault_Handler\
                    PROC
                    EXPORT  UsageFault_Handler        [WEAK]
                    B       .
                    ENDP
    SVC_Handler     PROC
                    EXPORT  SVC_Handler               [WEAK]
                    B       .
                    ENDP
    DebugMon_Handler\
                    PROC
                    EXPORT  DebugMon_Handler          [WEAK]
                    B       .
                    ENDP
    PendSV_Handler  PROC
                    EXPORT  PendSV_Handler            [WEAK]
                    B       .
                    ENDP
    SysTick_Handler PROC
                    EXPORT  SysTick_Handler           [WEAK]
                    B       .
                    ENDP
    
    Default_Handler PROC
    
                    EXPORT   POWER_CLOCK_IRQHandler [WEAK]
                    EXPORT   RADIO_IRQHandler [WEAK]
                    EXPORT   UARTE0_IRQHandler [WEAK]
                    EXPORT   TWIM0_TWIS0_IRQHandler [WEAK]
                    EXPORT   SPIM0_SPIS0_IRQHandler [WEAK]
                    EXPORT   GPIOTE_IRQHandler [WEAK]
                    EXPORT   SAADC_IRQHandler [WEAK]
                    EXPORT   TIMER0_IRQHandler [WEAK]
                    EXPORT   TIMER1_IRQHandler [WEAK]
                    EXPORT   TIMER2_IRQHandler [WEAK]
                    EXPORT   RTC0_IRQHandler [WEAK]
                    EXPORT   TEMP_IRQHandler [WEAK]
                    EXPORT   RNG_IRQHandler [WEAK]
                    EXPORT   ECB_IRQHandler [WEAK]
                    EXPORT   CCM_AAR_IRQHandler [WEAK]
                    EXPORT   WDT_IRQHandler [WEAK]
                    EXPORT   RTC1_IRQHandler [WEAK]
                    EXPORT   QDEC_IRQHandler [WEAK]
                    EXPORT   COMP_IRQHandler [WEAK]
                    EXPORT   SWI0_EGU0_IRQHandler [WEAK]
                    EXPORT   SWI1_EGU1_IRQHandler [WEAK]
                    EXPORT   SWI2_IRQHandler [WEAK]
                    EXPORT   SWI3_IRQHandler [WEAK]
                    EXPORT   SWI4_IRQHandler [WEAK]
                    EXPORT   SWI5_IRQHandler [WEAK]
                    EXPORT   PWM0_IRQHandler [WEAK]
                    EXPORT   PDM_IRQHandler [WEAK]
    POWER_CLOCK_IRQHandler
    RADIO_IRQHandler
    UARTE0_IRQHandler
    TWIM0_TWIS0_IRQHandler
    SPIM0_SPIS0_IRQHandler
    GPIOTE_IRQHandler
    SAADC_IRQHandler
    TIMER0_IRQHandler
    TIMER1_IRQHandler
    TIMER2_IRQHandler
    RTC0_IRQHandler
    TEMP_IRQHandler
    RNG_IRQHandler
    ECB_IRQHandler
    CCM_AAR_IRQHandler
    WDT_IRQHandler
    RTC1_IRQHandler
    QDEC_IRQHandler
    COMP_IRQHandler
    SWI0_EGU0_IRQHandler
    SWI1_EGU1_IRQHandler
    SWI2_IRQHandler
    SWI3_IRQHandler
    SWI4_IRQHandler
    SWI5_IRQHandler
    PWM0_IRQHandler
    PDM_IRQHandler
                    B .                            //here
                    ENDP
                    ALIGN
    
    ; User Initial Stack & Heap
    
                    IF      :DEF:__MICROLIB
    
                    EXPORT  __initial_sp
                    EXPORT  __heap_base
                    EXPORT  __heap_limit
    
                    ELSE
    
                    IMPORT  __use_two_region_memory
                    EXPORT  __user_initial_stackheap
    
    __user_initial_stackheap PROC
    
                    LDR     R0, = Heap_Mem
                    LDR     R1, = (Stack_Mem + Stack_Size)
                    LDR     R2, = (Heap_Mem + Heap_Size)
                    LDR     R3, = Stack_Mem
                    BX      LR
                    ENDP
    
                    ALIGN
    
                    ENDIF
    
                    END
    

Reply
  • Hi,

    I didn't get any error code, and the device didn't restart, but it can not execute the code and has no response.

    The pc will enter arm_startup_nrf52810.s file and lock at line 319 after the first transfer when debugging step by step. Then the system die there.

    Thanks.

    ; Copyright (c) 2009-2018 ARM Limited. All rights reserved.
    ; 
    ;     SPDX-License-Identifier: Apache-2.0
    ; 
    ; Licensed under the Apache License, Version 2.0 (the License); you may
    ; not use this file except in compliance with the License.
    ; You may obtain a copy of the License at
    ; 
    ;     www.apache.org/licenses/LICENSE-2.0
    ; 
    ; Unless required by applicable law or agreed to in writing, software
    ; distributed under the License is distributed on an AS IS BASIS, WITHOUT
    ; WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    ; See the License for the specific language governing permissions and
    ; limitations under the License.
    ; 
    ; NOTICE: This file has been modified by Nordic Semiconductor ASA.
    
                    IF :DEF: __STARTUP_CONFIG
    #include "startup_config.h"
    #ifndef __STARTUP_CONFIG_STACK_ALIGNEMENT
    #define __STARTUP_CONFIG_STACK_ALIGNEMENT 3
    #endif
                    ENDIF
    
                    IF :DEF: __STARTUP_CONFIG
    Stack_Size      EQU __STARTUP_CONFIG_STACK_SIZE
                    ELIF :DEF: __STACK_SIZE
    Stack_Size      EQU __STACK_SIZE
                    ELSE
    Stack_Size      EQU     2048
                    ENDIF
                    
                    IF :DEF: __STARTUP_CONFIG
    Stack_Align     EQU __STARTUP_CONFIG_STACK_ALIGNEMENT
                    ELSE
    Stack_Align     EQU 3
                    ENDIF
    
                    AREA    STACK, NOINIT, READWRITE, ALIGN=Stack_Align
    Stack_Mem       SPACE   Stack_Size
    __initial_sp
    
                    IF :DEF: __STARTUP_CONFIG
    Heap_Size       EQU __STARTUP_CONFIG_HEAP_SIZE
                    ELIF :DEF: __HEAP_SIZE
    Heap_Size       EQU __HEAP_SIZE
                    ELSE
    Heap_Size       EQU     2048
                    ENDIF
    
                    AREA    HEAP, NOINIT, READWRITE, ALIGN=3
    __heap_base
    Heap_Mem        SPACE   Heap_Size
    __heap_limit
    
                    PRESERVE8
                    THUMB
    
    ; Vector Table Mapped to Address 0 at Reset
    
                    AREA    RESET, DATA, READONLY
                    EXPORT  __Vectors
                    EXPORT  __Vectors_End
                    EXPORT  __Vectors_Size
    
    __Vectors       DCD     __initial_sp              ; Top of Stack
                    DCD     Reset_Handler
                    DCD     NMI_Handler
                    DCD     HardFault_Handler
                    DCD     MemoryManagement_Handler
                    DCD     BusFault_Handler
                    DCD     UsageFault_Handler
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     SVC_Handler
                    DCD     DebugMon_Handler
                    DCD     0                         ; Reserved
                    DCD     PendSV_Handler
                    DCD     SysTick_Handler
    
                    ; External Interrupts
                    DCD     POWER_CLOCK_IRQHandler
                    DCD     RADIO_IRQHandler
                    DCD     UARTE0_IRQHandler
                    DCD     TWIM0_TWIS0_IRQHandler
                    DCD     SPIM0_SPIS0_IRQHandler
                    DCD     0                         ; Reserved
                    DCD     GPIOTE_IRQHandler
                    DCD     SAADC_IRQHandler
                    DCD     TIMER0_IRQHandler
                    DCD     TIMER1_IRQHandler
                    DCD     TIMER2_IRQHandler
                    DCD     RTC0_IRQHandler
                    DCD     TEMP_IRQHandler
                    DCD     RNG_IRQHandler
                    DCD     ECB_IRQHandler
                    DCD     CCM_AAR_IRQHandler
                    DCD     WDT_IRQHandler
                    DCD     RTC1_IRQHandler
                    DCD     QDEC_IRQHandler
                    DCD     COMP_IRQHandler
                    DCD     SWI0_EGU0_IRQHandler
                    DCD     SWI1_EGU1_IRQHandler
                    DCD     SWI2_IRQHandler
                    DCD     SWI3_IRQHandler
                    DCD     SWI4_IRQHandler
                    DCD     SWI5_IRQHandler
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     PWM0_IRQHandler
                    DCD     PDM_IRQHandler
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
                    DCD     0                         ; Reserved
    
    __Vectors_End
    
    __Vectors_Size  EQU     __Vectors_End - __Vectors
    
                    AREA    |.text|, CODE, READONLY
    
    ; Reset Handler
    
    
    Reset_Handler   PROC
                    EXPORT  Reset_Handler             [WEAK]
                    IMPORT  SystemInit
                    IMPORT  __main
    
    
                    LDR     R0, =SystemInit
                    BLX     R0
                    LDR     R0, =__main
                    BX      R0
                    ENDP
    
    ; Dummy Exception Handlers (infinite loops which can be modified)
    
    NMI_Handler     PROC
                    EXPORT  NMI_Handler               [WEAK]
                    B       .
                    ENDP
    HardFault_Handler\
                    PROC
                    EXPORT  HardFault_Handler         [WEAK]
                    B       .
                    ENDP
    MemoryManagement_Handler\
                    PROC
                    EXPORT  MemoryManagement_Handler  [WEAK]
                    B       .
                    ENDP
    BusFault_Handler\
                    PROC
                    EXPORT  BusFault_Handler          [WEAK]
                    B       .
                    ENDP
    UsageFault_Handler\
                    PROC
                    EXPORT  UsageFault_Handler        [WEAK]
                    B       .
                    ENDP
    SVC_Handler     PROC
                    EXPORT  SVC_Handler               [WEAK]
                    B       .
                    ENDP
    DebugMon_Handler\
                    PROC
                    EXPORT  DebugMon_Handler          [WEAK]
                    B       .
                    ENDP
    PendSV_Handler  PROC
                    EXPORT  PendSV_Handler            [WEAK]
                    B       .
                    ENDP
    SysTick_Handler PROC
                    EXPORT  SysTick_Handler           [WEAK]
                    B       .
                    ENDP
    
    Default_Handler PROC
    
                    EXPORT   POWER_CLOCK_IRQHandler [WEAK]
                    EXPORT   RADIO_IRQHandler [WEAK]
                    EXPORT   UARTE0_IRQHandler [WEAK]
                    EXPORT   TWIM0_TWIS0_IRQHandler [WEAK]
                    EXPORT   SPIM0_SPIS0_IRQHandler [WEAK]
                    EXPORT   GPIOTE_IRQHandler [WEAK]
                    EXPORT   SAADC_IRQHandler [WEAK]
                    EXPORT   TIMER0_IRQHandler [WEAK]
                    EXPORT   TIMER1_IRQHandler [WEAK]
                    EXPORT   TIMER2_IRQHandler [WEAK]
                    EXPORT   RTC0_IRQHandler [WEAK]
                    EXPORT   TEMP_IRQHandler [WEAK]
                    EXPORT   RNG_IRQHandler [WEAK]
                    EXPORT   ECB_IRQHandler [WEAK]
                    EXPORT   CCM_AAR_IRQHandler [WEAK]
                    EXPORT   WDT_IRQHandler [WEAK]
                    EXPORT   RTC1_IRQHandler [WEAK]
                    EXPORT   QDEC_IRQHandler [WEAK]
                    EXPORT   COMP_IRQHandler [WEAK]
                    EXPORT   SWI0_EGU0_IRQHandler [WEAK]
                    EXPORT   SWI1_EGU1_IRQHandler [WEAK]
                    EXPORT   SWI2_IRQHandler [WEAK]
                    EXPORT   SWI3_IRQHandler [WEAK]
                    EXPORT   SWI4_IRQHandler [WEAK]
                    EXPORT   SWI5_IRQHandler [WEAK]
                    EXPORT   PWM0_IRQHandler [WEAK]
                    EXPORT   PDM_IRQHandler [WEAK]
    POWER_CLOCK_IRQHandler
    RADIO_IRQHandler
    UARTE0_IRQHandler
    TWIM0_TWIS0_IRQHandler
    SPIM0_SPIS0_IRQHandler
    GPIOTE_IRQHandler
    SAADC_IRQHandler
    TIMER0_IRQHandler
    TIMER1_IRQHandler
    TIMER2_IRQHandler
    RTC0_IRQHandler
    TEMP_IRQHandler
    RNG_IRQHandler
    ECB_IRQHandler
    CCM_AAR_IRQHandler
    WDT_IRQHandler
    RTC1_IRQHandler
    QDEC_IRQHandler
    COMP_IRQHandler
    SWI0_EGU0_IRQHandler
    SWI1_EGU1_IRQHandler
    SWI2_IRQHandler
    SWI3_IRQHandler
    SWI4_IRQHandler
    SWI5_IRQHandler
    PWM0_IRQHandler
    PDM_IRQHandler
                    B .                            //here
                    ENDP
                    ALIGN
    
    ; User Initial Stack & Heap
    
                    IF      :DEF:__MICROLIB
    
                    EXPORT  __initial_sp
                    EXPORT  __heap_base
                    EXPORT  __heap_limit
    
                    ELSE
    
                    IMPORT  __use_two_region_memory
                    EXPORT  __user_initial_stackheap
    
    __user_initial_stackheap PROC
    
                    LDR     R0, = Heap_Mem
                    LDR     R1, = (Stack_Mem + Stack_Size)
                    LDR     R2, = (Heap_Mem + Heap_Size)
                    LDR     R3, = Stack_Mem
                    BX      LR
                    ENDP
    
                    ALIGN
    
                    ENDIF
    
                    END
    

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