Error 65
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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 error 651 Notes Downloads Product Updates Discussion Forum Books Product Information Software & Hardware Products ARM error 365 Development ToolsC166 Development ToolsC51 Development ToolsC251 Development ToolsDebug AdaptersEvaluation Boards Product Brochures Newsletters Home/Technical Support µVISION DEBUGGER: ERROR 65 (ACCESS VIOLATION) Information error 650 in this article applies to: MDK All Versions Cx51 All Versions C166 All Versions C251 All Versions SYMPTOMS My project includes a variable that I access using an absolute memory address. The µVision Debugger generates the
Error E65
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 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. error 69 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 µVision3 User's Guide. SEE ALSO µVision DEBUGGER: ERROR 65 WHEN USING MEMMAP ON PHILIPS LPC2000 µVision DEBUGGER: ERRO
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 error 56 Articles Product Manuals Application Notes Downloads Product Updates Discussion Forum Books Product Information Software
Error 64
& Hardware Products ARM Development ToolsC166 Development ToolsC51 Development ToolsC251 Development ToolsDebug AdaptersEvaluation Boards Product Brochures Newsletters Home/Technical Support µVISION DEBUGGER:
Error 66
ERROR 65 USING REMAP FEATURE ON ARM Information in this article applies to: µVision3 any Version ARM Development Tools QUESTION I am using the µVision Simulator on an STR7xx device. When I start the http://www.keil.com/support/docs/814.htm simulator, I have the following memory map: MAP 0x00000000 - 0x0003FFFF exec read 0x20000000 - 0x2000FFFF read write : : During run-time, I copy program code into the RAM anduse the PCU_BOOTCR register to remap the RAM on the fly to address space 0 using the instruction: PCU->BOOTCR |= 2 Everything works just fine, however the memory map for address region is now: MAP 0x00000000 - 0x0000FFFF read http://www.keil.com/support/docs/3102.htm write // this should be executable!! 0x20000000 - 0x2000FFFF read write : : When there is an interrupt in my program, the simulator reacts correctly with: *** error 65: access violation at 0x00000008 : no 'execute/read' permission This is the correct behavior according to the memory map, but prevents correct code execution. Is there a solution to my problem? ANSWER When you REMAP the RAM to the memory region 0, the mapping attributes are taken from the original RAM region. Change the mapping for the RAM region using the MAP command as shown below: MAP 0x20000000, 0x2000003F read write exec This also changes the mapping for region 0 once you have remapped the RAM. MORE INFORMATION µVision DEBUGGER: ERROR 65 (ACCESS VIOLATION) µVision DEBUGGER: BREAKPOINTS IN MEMORY REGIONS FORUM THREADS The following Discussion Forum threads may provide information related to this topic. error 65 Last Reviewed: Thursday, January 11, 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 Not
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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 workings and policies of this site About Us Learn more about 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 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 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 '