Can not enter into debug mode LPC4088 in KEIL

[pauljay]

Hi,

I have LPC4078 board and KEIL uvsion 5 with ULINK2 debugger.

I got this message in KEIL uVision 5 when I try to debug.

Cannot access Memory (@ 0x00000000, Write, Acc Size: 4 Byte)

Cannot access Memory (@ 0x00001000, Write, Acc Size: 4 Byte)

I can program the chip LPC4078 and enter into ISP mode correctly.

But whenever I tried to debug, the above two messages come out.

1) The main oscillator is 12MHz external.

2) The basic framework is mbed LPC4088

3) debug mode is SWD 

4) The startup code is as below

5) I have checked also PLL and src clock. It seems no problem AFAIK.

Please give me some clue what's wrong with this about ?

;/*****************************************************************************
; * @file: startup_LPC407x_8x.s
; * @purpose: CMSIS Cortex-M4 Core Device Startup File
; * for the NXP LPC407x_8x Device Series
; * @version: V1.20
; * @date: 16. January 2012
; *------- <<< Use Configuration Wizard in Context Menu >>> ------------------
; *
; * Copyright (C) 2012 ARM Limited. All rights reserved.
; * ARM Limited (ARM) is supplying this software for use with Cortex-M4
; * processor based microcontrollers. This file can be freely distributed
; * within development tools that are supporting such ARM based processors.
; *
; * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
; * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
; * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
; * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
; * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
; *
; *****************************************************************************/

; Vector Table Mapped to Address 0 at Reset

AREA RESET, DATA, READONLY
EXPORT __Vectors

__Vectors DCD 0x10008000 ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
DCD MemManage_Handler ; MPU Fault Handler
DCD BusFault_Handler ; Bus Fault Handler
DCD UsageFault_Handler ; Usage Fault Handler
; DCD 0xEFFFF5D6 ; Reserved- vector sum
DCD 0xEFFFF39E ; Reserved- vector sum
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD SVC_Handler ; SVCall Handler
DCD DebugMon_Handler ; Debug Monitor Handler
DCD 0 ; Reserved
DCD PendSV_Handler ; PendSV Handler
DCD SysTick_Handler ; SysTick Handler

; External Interrupts
DCD WDT_IRQHandler ; 16: Watchdog Timer
DCD TIMER0_IRQHandler ; 17: Timer0
DCD TIMER1_IRQHandler ; 18: Timer1
DCD TIMER2_IRQHandler ; 19: Timer2
DCD TIMER3_IRQHandler ; 20: Timer3
DCD UART0_IRQHandler ; 21: UART0
DCD UART1_IRQHandler ; 22: UART1
DCD UART2_IRQHandler ; 23: UART2
DCD UART3_IRQHandler ; 24: UART3
DCD PWM1_IRQHandler ; 25: PWM1
DCD I2C0_IRQHandler ; 26: I2C0
DCD I2C1_IRQHandler ; 27: I2C1
DCD I2C2_IRQHandler ; 28: I2C2
DCD 0 ; 29: reserved, not for SPIFI anymore
DCD SSP0_IRQHandler ; 30: SSP0
DCD SSP1_IRQHandler ; 31: SSP1
DCD PLL0_IRQHandler ; 32: PLL0 Lock (Main PLL)
DCD RTC_IRQHandler ; 33: Real Time Clock
DCD EINT0_IRQHandler ; 34: External Interrupt 0
DCD EINT1_IRQHandler ; 35: External Interrupt 1
DCD EINT2_IRQHandler ; 36: External Interrupt 2
DCD EINT3_IRQHandler ; 37: External Interrupt 3
DCD ADC_IRQHandler ; 38: A/D Converter
DCD BOD_IRQHandler ; 39: Brown-Out Detect
DCD USB_IRQHandler ; 40: USB
DCD CAN_IRQHandler ; 41: CAN
DCD DMA_IRQHandler ; 42: General Purpose DMA
DCD I2S_IRQHandler ; 43: I2S
DCD ENET_IRQHandler ; 44: Ethernet
DCD MCI_IRQHandler ; 45: SD/MMC card I/F
DCD MCPWM_IRQHandler ; 46: Motor Control PWM
DCD QEI_IRQHandler ; 47: Quadrature Encoder Interface
DCD PLL1_IRQHandler ; 48: PLL1 Lock (USB PLL)
DCD USBActivity_IRQHandler ; 49: USB Activity interrupt to wakeup
DCD CANActivity_IRQHandler ; 50: CAN Activity interrupt to wakeup
DCD UART4_IRQHandler ; 51: UART4
DCD SSP2_IRQHandler ; 52: SSP2
DCD LCD_IRQHandler ; 53: LCD
DCD GPIO_IRQHandler ; 54: GPIO
DCD PWM0_IRQHandler ; 55: PWM0
DCD EEPROM_IRQHandler ; 56: EEPROM

IF :LNOT::DEF:NO_CRP
AREA |.ARM.__at_0x02FC|, CODE, READONLY
CRP_Key DCD 0x12345678
ENDIF

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
MemManage_Handler\
PROC
EXPORT MemManage_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 WDT_IRQHandler [WEAK]
EXPORT TIMER0_IRQHandler [WEAK]
EXPORT TIMER1_IRQHandler [WEAK]
EXPORT TIMER2_IRQHandler [WEAK]
EXPORT TIMER3_IRQHandler [WEAK]
EXPORT UART0_IRQHandler [WEAK]
EXPORT UART1_IRQHandler [WEAK]
EXPORT UART2_IRQHandler [WEAK]
EXPORT UART3_IRQHandler [WEAK]
EXPORT PWM1_IRQHandler [WEAK]
EXPORT I2C0_IRQHandler [WEAK]
EXPORT I2C1_IRQHandler [WEAK]
EXPORT I2C2_IRQHandler [WEAK]
;EXPORT SPIFI_IRQHandler [WEAK]
EXPORT SSP0_IRQHandler [WEAK]
EXPORT SSP1_IRQHandler [WEAK]
EXPORT PLL0_IRQHandler [WEAK]
EXPORT RTC_IRQHandler [WEAK]
EXPORT EINT0_IRQHandler [WEAK]
EXPORT EINT1_IRQHandler [WEAK]
EXPORT EINT2_IRQHandler [WEAK]
EXPORT EINT3_IRQHandler [WEAK]
EXPORT ADC_IRQHandler [WEAK]
EXPORT BOD_IRQHandler [WEAK]
EXPORT USB_IRQHandler [WEAK]
EXPORT CAN_IRQHandler [WEAK]
EXPORT DMA_IRQHandler [WEAK]
EXPORT I2S_IRQHandler [WEAK]
EXPORT ENET_IRQHandler [WEAK]
EXPORT MCI_IRQHandler [WEAK]
EXPORT MCPWM_IRQHandler [WEAK]
EXPORT QEI_IRQHandler [WEAK]
EXPORT PLL1_IRQHandler [WEAK]
EXPORT USBActivity_IRQHandler [WEAK]
EXPORT CANActivity_IRQHandler [WEAK]
EXPORT UART4_IRQHandler [WEAK]
EXPORT SSP2_IRQHandler [WEAK]
EXPORT LCD_IRQHandler [WEAK]
EXPORT GPIO_IRQHandler [WEAK]
EXPORT PWM0_IRQHandler [WEAK]
EXPORT EEPROM_IRQHandler [WEAK]

WDT_IRQHandler
TIMER0_IRQHandler
TIMER1_IRQHandler
TIMER2_IRQHandler
TIMER3_IRQHandler
UART0_IRQHandler
UART1_IRQHandler
UART2_IRQHandler
UART3_IRQHandler
PWM1_IRQHandler
I2C0_IRQHandler
I2C1_IRQHandler
I2C2_IRQHandler
;SPIFI_IRQHandler ;not used
SSP0_IRQHandler
SSP1_IRQHandler
PLL0_IRQHandler
RTC_IRQHandler
EINT0_IRQHandler
EINT1_IRQHandler
EINT2_IRQHandler
EINT3_IRQHandler
ADC_IRQHandler
BOD_IRQHandler
USB_IRQHandler
CAN_IRQHandler
DMA_IRQHandler
I2S_IRQHandler
ENET_IRQHandler
MCI_IRQHandler
MCPWM_IRQHandler
QEI_IRQHandler
PLL1_IRQHandler
USBActivity_IRQHandler
CANActivity_IRQHandler
UART4_IRQHandler
SSP2_IRQHandler
LCD_IRQHandler
GPIO_IRQHandler
PWM0_IRQHandler
EEPROM_IRQHandler

B .

ENDP

ALIGN
END

Attached is the scatter file of my project on the LPC4078 board.

; *************************************************************
; *** Scatter-Loading Description File generated by uVision ***
; *************************************************************

LR_IROM1 0x00000000 0x00080000 { ; load region size_region
ER_IROM1 0x00000000 0x00080000 { ; load address = execution address
*.o (RESET, +First)
*(InRoot$$Sections)
*.o (+RO-CODE) ; prioritizes CODE in IFLASH before SPIFI
.ANY2 (+RO-DATA) ; prioritizes DATA in IFLASH before SPIFI
.ANY (+RO) ; remaining RO
}
RW_IRAM1 0x100000E8 0x0000FF18 { ; RW data
.ANY (+RW +ZI)
}
RW_IRAM2 0x20000000 0x00004000 {
.ANY (AHBSRAM0)
}
RW_IRAM3 0x20004000 0x00004000 {
.ANY (AHBSRAM1)
}
}

LR_IROM2 0x28000000 0x01000000 {
ER_IROM2 0x28000000 0x01000000 { ; load address = execution address
.ANY1 (+RO-DATA) ; all DATA not fitting in IFLASH
; .ANY (SPIFI_MEM) ; DATA tagged as SPIFI_MEM
; *.o (SPIFI_MEM) ; CODE tagged as SPIFI_MEM
}
}

[Sabina_Bruce]

Hello Paul,

Hope you are doing well.

The support will continue on your internal thread. 

Best Regards,

Sabina

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