Error 1 Relative Branch Out Of Reach
CommunitiesAVR FreaksAtmel SMART ARM-based MCUsInternet of ThingsCapacitive TouchProjectsVendorsWiki You are hereHome » Communities » AVR Freaks » Forums » AVR Microcontrollers » megaAVR and tinyAVR » Error relative branch out of reach Main menu mobile Home Communities Forums Projects Vendors Wiki Search My summary Privacy Contact Site Use Terms Cookies Communities Forums Projects Vendors WIKI Error relative branch out of reach Log in or register to post comments Go To Last Post 4 posts / 0 new Author Message padewinter Level: Rookie Joined: Wed. Mar 3, 2010 Posts: 36 View posts Location: Netherlands #1 Posted by padewinter: Thu. Apr 8, 2010 - 09:01 AM Fivestar widget 12345Total votes: 0 Hi I've got a main program and from that main program I do a breq to hiccup As long as I only use timeoutL in the hiccup file everything goes well but if I include timeoutH also I get a 'Error relative branch out of reach' timeoutL and timeoutH fill a counter in the interuptfile that occurs every 1msec to make a timer. The mode bit is set if the timer is zero. I can not figure out what I'm doing wrong or did I something that is not possible? I include a piece of the code. Main: ldi temp0,$00 ;tijdelijk voor alleen hiccup!!!! Load $00 into register temp0 mov pwm,temp0 ;tijdelijk voor alleen hiccup!!!! move the content of temp0 into register pwm ;*** selection of the setting *** in temp0,PINA ;read all the pins of port A into temp0 ; ANDI temp0,$88 ;only look at bit #3 and #7 ANDI temp0,$08 ;only look at bit #3 cpi temp0,$08 ;is bit #3 set (and bit #7 not set)? breq hiccup ;yes jump to Hiccup cpi temp0,$00 ;are bit #3 (and #7 not set)? breq latch ;yes jump to Latch [/code] ;*** start hiccup mode and max alarm *** Hiccup: mov temp0, ana1 ;Load the content of ana1 into temp0 this is the ADvalue from PA0 cpi temp0, maxI ;Compare temp0 with the constant maxI.C-flag is 1 if MaxI is
CommunitiesAVR FreaksAtmel SMART ARM-based MCUsInternet of ThingsCapacitive TouchProjectsVendorsWiki You are hereHome » Communities » AVR Freaks » Forums » Tools » Atmel Studio (AVR-related) » Relative branch out of reach Main menu mobile Home Communities Forums Projects Vendors Wiki Search My summary Privacy Contact Site Use Terms Cookies Communities Forums Projects Vendors WIKI Relative branch out of reach Log in or register to post comments Go To Last Post 3 posts / 0 new Author Message cayong Level: New Member Joined: Fri. Jul 4, 2003 Posts: 17 View posts #1 Posted by cayong: Thu. Aug http://www.avrfreaks.net/forum/error-relative-branch-out-reach 14, 2003 - 09:53 AM Fivestar widget 12345Total votes: 0 Is there a way to prevent 'relative branch out of reach' errors, apart from re-arranging the assembler code? I assume this error occurs when you call a label that is too far up/down the page from the point of call. Am I right? Tags:Tools, Atmel Studio (AVR-related) Log in / register to post comments Top http://www.avrfreaks.net/forum/relative-branch-out-reach admin Level: Site Admin Joined: Fri. Oct 18, 2013 Posts: 55514 View posts #2 Posted by admin: Sat. Aug 16, 2003 - 09:34 PM 12345Total votes: 0 rjmp and rcall can only go plus or minus 2k of code. If your destination is greater than that then you must use jmp and call. The instructions are another word of code and another clock. If the destination is less than 2k away AND your part has 4k bytes of FLASH or less, there is the wrap relative jumps option under Projects, AVR Assembler Setup. I was using an AT90S8515 part with AVR Studio 3.56 and I went to the ATmega162 for the extra FLASH. When I added some code, my program stopped working because the jump and calls were being wrapped back to the wrong location in FLASH. That is how found this option. I am assuming that AVR Studio versions 3.56 and 4 use the same assembler which generates all the warning and error messages. admin's test signature
Log in or register to post comments Top admin Level: Site Admin Joined: Fri. Oct 18, 2013 Posts: 55514 View posts #3 Phere 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 http://stackoverflow.com/questions/37885763/error-relative-branch-out-of-reach-in-avr hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges http://www.radiokot.ru/forum/viewtopic.php?t=9156 Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error “Relative branch out of reach” in avr up vote 0 down vote favorite I'm new on AVR. I have an "Relative branch out of reach" error for the "brne error 1 round_loop" line while debugging. Is anyone to help me? Thank you so much for your helps. ; Test if round counter has reached 14 mov t4, rc subi t4, 14 brne round_loop round_loop: round_loop: ; XOR state and key eor s0, k0 eor s1, k1 eor s2, k2 eor s3, k3 embedded avr share|improve this question asked Jun 17 at 15:55 hopeTo 9028 Do you really men "while debugging", or rather while building for debug? It error 1 relative is not possible for the assembler to generate BRNE opcode with an out of reach offset. –Clifford Jun 17 at 20:37 add a comment| 2 Answers 2 active oldest votes up vote 1 down vote accepted The AVR BRNE instruction is a 16 bit op-code, 7 bits of which are the branch offset. This 7 bit signed operand can have a value k in the range -64 ≤ k ≤ +63. The PC is modified by k +1 (i.e. -63 to +64). If the jump is further then that, a relative branch is unsuitable. You either need to locate the target closer to the branch, or use an unconditional branch to an unconditional jump (JMP) with a 22bit range, or a relative jump (RJMP) with a 12 bit range. mov t4, rc subi t4, 14 brne round_loop_longjmp rjmp no_round_jmp round_loop_longjmp: rjmp round_loop no_round_jmp: ... share|improve this answer edited Jun 18 at 7:34 answered Jun 17 at 20:33 Clifford 43.8k53893 add a comment| up vote 2 down vote A relative branch means that the jump occurs by changing the position of the program counter(which instruction is being executed right now) by either adding or subtracting a value from it. That means round_loop in brne is not translated into an absolute address, but a distance from the current instruction. The limit for brne is 7bits, so I believe it should be within +-64 wor
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