Keil Arm Error 65
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Error 65: Access Violation At 0xfffffff4 : No 'write' Permission
ToolsDebug AdaptersEvaluation Boards Product Brochures Newsletters Home/Technical Support µVISION DEBUGGER: ERROR 65 (ACCESS VIOLATION) Information in this article applies to: MDK All Versions Cx51 All Versions C166 All Versions C251 All
Keil No Read Permission
Versions SYMPTOMS My project includes a variable that I access using an absolute memory address. The µVision Debugger generates the following error whenever I try to write to the variable: *** Error 65: Access violation at 0x00000004 : No 'write' permission I have specified this memory area to the linker but I still receive this error. CAUSE When the µVision Debugger loads an how to fix access violation at address executable program, it creates a memory map using the program and data segments from the program. Code segments are marked as executable while data segments are marked as read/write. All other memory is unmapped and is, therefore, not marked for any type of access. The µVision Debugger checks that all memory accesses are made to objects that are defined in your C program. For any access that is outside of a defined C object, the µVision debugger generates an error 65: access violation message. By default, the debugger allows only memory accesses to valid data objects. This is useful for finding uninitialized or incorrectly initialized pointers, for example. Usually, there is a programming error when you try to access unexpected locations. RESOLUTION Enable memory regions for absolute memory accesses using the MAP debugger command or the Debug - Memory Map dialog. Define all the memory ranges that your program is permitted to access. Ensure that you set the permissions (read, write, execute) for each range to match your actual hardware. You may put the required MAP commands into a debugger INI file that can be
30 Days In the Last 90 Days In the Last 6 Months Technical Support Overview Search Contact Assistance Request Feedback Support Resources Support Knowledgebase Article Index Top 10 Articles Product Manuals Application Notes Downloads Product
Error 651
Updates Discussion Forum Books Product Information Software & Hardware Products ARM Development ToolsC166 Development ToolsC51 Development ToolsC251 Development ToolsDebug AdaptersEvaluation Boards Product Brochures Newsletters Home/Technical Support µVISION DEBUGGER: ERROR 65 WHEN USING MEMMAP ON PHILIPS LPC2000 Information in this article applies to: µVision Version 3.20 or later QUESTION I have copied the interrupt vectors into RAM (to allow the implementation of a bootstrap loader) using the following code lines: unsigned char vectors[32] __at 0x40000000; http://www.keil.com/support/docs/814.htm // reserve space for IRQ vectors void copy_vectors (void) { memcpy (vectors, 0, 32); // copy original IRQ vectors to RAM MEMMAP = 2; // fetch vectors from RAM } When I run this program in the simulator I am getting *** error 65: access violation at 0x00000018 : no 'execute/read' permission On real hardware my program seems to work. How can I test the program in the simulator? ANSWER You need to specify the http://www.keil.com/support/docs/3140.htm memory mapping attributes for the RAM using the MAP command. It is required that the address space 0x40000000 - 0x4000003F allows code execution. You may put the required MAP commands into a debugger INI file that can be entered under Project — Options for Target — Debug — Initialization file. The content of such a file may be for example: MAP 0x40000000, 0x4000003F READ WRITE EXEC // allow code execution for interrupt vector fetch MORE INFORMATION Refer to MAP in the µVision3 User's Guide. SEE ALSO µVision DEBUGGER: ERROR 65 (ACCESS VIOLATION) Last Reviewed: Wednesday, January 10, 2007 Did this article provide the answer you needed? Yes No Not Sure Products Development Tools ARM C166 C51 C251 µVision IDE and Debugger Hardware & Collateral ULINK Debug Adaptors Evaluation Boards Product Brochures Device Database Distributors Downloads MDK-ARM C51 C166 C251 File downloads Support Knowledgebase Discussion Forum Product Manuals Application Notes Contact Distributors Request a Quote Sales Contacts Cookie Settings | Terms of Use | Privacy | Accessibility | Contact Us | Feedback Copyright © 2005-2016 ARM Group. All rights reserved. Important information This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies. Don't show this message again Change Settings Privacy Policy Update ARM’s Privacy Policy has been updated. By contin
tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the http://electronics.stackexchange.com/questions/27006/stm32-keil-and-error-65-access-violation-at-0x60000000-no-write-permis workings and policies of this site About Us Learn more about http://infocenter.arm.com/help/topic/com.arm.doc.faqs/ka9356.html Stack Overflow the company Business Learn more about hiring developers or posting ads with us Electrical Engineering Questions Tags Users Badges Unanswered Ask Question _ Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. Join them; it error 65 only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top STM32, Keil and *** error 65: access violation at 0x60000000 : no 'write' permission up vote 3 down vote favorite 1 I tried to run LCD software in Keil for access violation at STM32, but I got *** error 65: access violation at 0x60000000 : no 'write' permission Do you know how to solve that error ? I saw that I can create a MAP, but it didn't work MAP 0x00000000, 0x70000000 READ WRITE // allow R/W access to IO space (Click for full resolution image) from this definition : #define LCD_REG (*((volatile unsigned short *) 0x60000000)) /* RS = 0 */ #define LCD_RAM (*((volatile unsigned short *) 0x60020000)) /* RS = 1 */ Thanks for reading I'm using simulator microcontroller arm stm32 keil share|improve this question edited Mar 8 '12 at 12:22 asked Feb 22 '12 at 2:07 Rick Ant 306721 i followed this video to resolve the same issue related to access violation when i try to use keil in simulator mode youtu.be/gEedJNB2WfM –infini Mar 3 at 5:29 add a comment| 2 Answers 2 active oldest votes up vote 1 down vote accepted Try going to: Project -> Options for Target '
project includes a variable that I access using an absolute memory address. The µVision Debugger generates the following error whenever I try to write to the variable: *** Error 65: Access violation at 0x00000004 : No 'write' permission I have specified this memory area to the linker but I still receive this error. CAUSE When the uVision Debugger loads an executable program, it creates a memory map using the program and data segments from the program. Code segments are marked as executable while data segments are marked as read/write. All other memory is unmapped and is, therefore, not marked for any type of access. The µVision Debugger checks that all memory accesses are made to objects that are defined in your C program. For any access that is outside of a defined C object, the µVision debugger generates an error 65: access violation message. By default, the debugger allows only memory accesses to valid data objects. This is useful for finding uninitialized or incorrectly initialized pointers, for example. Usually, there is a programming error when you try to access unexpected locations. RESOLUTION Enable memory regions for absolute memory accesses using the MAP debugger command or the Debug - Memory Map dialog. Define all the memory ranges that your program is permitted to access. Ensure that you set the permissions (read, write, execute) for each range to match your actual hardware. You may put the required MAP commands into a debugger INI file that can be entered under Project -> Options for Target -> Debug -> Initialization file. For example, the content of such a file may be: MAP 0xF800, 0xF8FF READ WRITE // allow R/W access to IO space MORE INFORMATION Refer to MAP in the µVision User's Guide. SEE ALSO UVISION DEBUGGER: ERROR 65 WHEN USING MEMMAP ON PHILIPS LPC2000 UVISION DEBUGGER: ERROR 65 USING REMAP FEATURE ON ARM Article last edited on: 2005-12-10 03:11:52 Rate this article Disagree? Move your mouse over the bar and click Did you find this article helpful? Yes No How can we improve this article? Submit Rating and Feedback Link to this article Copyright © 2011 ARM Limited. All rights reserved. External (Open), Non-Confidential Home