Hello I will try to code it in C today ,
In the mean while, someone answered this: https://my.st.com/public/STe2ecommunities/mcu/Lists/stm81/Flat.aspx?RootFolder=%2fpublic%2fSTe2ecommunities%2fmcu%2fLists%2fstm81%2fpointer%20problem%20%28sdcc%20assembler%29&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580001E3853D9DB932A46A3FE4CD15CAB46FB&TopicsView=https%3A%2F%2Fmy%2Est%2Ecom%2Fpublic%2FSTe2ecommunities%2Fmcu%2FLists%2Fstm81%2FAllItems%2Easpx¤tviews=38 and I had changed my code to this: 00813C 72 CE 00 03 [ 5] 214 ldw X,[_charptr] 008140 CF 00 02 [ 2] 215 ldw _lcdchar,X 008143 CD 81 D5 [ 4] 216 call _lcdwritechar 008146 CE 00 03 [ 2] 217 ldw X, _charptr 008149 5C [ 2] 218 incw X 00814A CF 00 03 [ 2] 219 ldw _charptr, X 220 00814D CC 81 2A [ 2] 221 JP main_loop regards Le 2014-09-29 01:44, Bin Shi a écrit : > Does your c code work? If so, what are the differences between the > generated asm and your own asm ? > > r...@remi.lu编写： > >> hi, >> >> I tried following a c/asm generated code by sdcc , but now it only >> prints the T , like the INCrementing doesnt do it: >> >> >> any help ?, and as I said , when I use thing.w , the "thing" >> register/variable is not recognised, it takes is as a new reference >> ... >> the .w to make show as a word, is not handeled i think >> >> .... >> ;-------------------------------------------------------- >> .area INITIALIZED >> >> _charptr:: >> .ds 2 >> ;-------------------------------------------------------- >> ; Stack segment in internal ram >> ;-------------------------------------------------------- >> ..... >> ;-------------------------------------------------------- >> .area INITIALIZED >> >> _charptr:: >> .ds 2 >> ;-------------------------------------------------------- >> ; Stack segment in internal ram >> >> mov _varOne, #'a' >> >> ldw X,__xinit__charptr ;#__string_0 >> ldw _charptr, X >> >> >> main_loop: >> >> >> LDW X, #0d50 >> CALL delay_m >> CALL ledon >> >> >> LDW X, #0d50 >> CALL delay_m >> CALL ledoff >> >> >> ld a,[__xinit__charptr] ; <---- not returning what is >> at that >> address >> ld _lcdchar,a >> call _lcdwritechar >> inc __xinit__charptr >> >> JP main_loop >> >> .... >> >> >> .area CODE >> __string_0: >> .ascii "toto" >> .db 0x00 >> >> .area INITIALIZER >> __xinit__charptr: >> .dw __string_0 >> >> .area CABS (ABS) >> >> .... >> >> >> >> >> >> >> Le 26.09.2014 13:33, r...@remi.lu a écrit : >>> Hello >>> >>> I tested your suggestion, then replaced the ADDW with INCW ... still >>> not >>> working >>> >>> this time, the carracter it self is incremented >>> as if the syntax >>> >>> ldw X,[_charptr] doesnt return a pointer ... >>> >>> >>> If you guys think this is not a bug, I can try forum@st and try to >>> port >>> their answers >>> i am aware this mailing list is not dedicated to the STM8 assembly... >>> >>> >>> >>> >>> ldw X,#string_0 >>> ldw _charptr, X >>> >>> main_loop: >>> >>> LDW X, #0d50 >>> CALL delay_m >>> CALL ledon >>> >>> LDW X, #0d50 >>> CALL delay_m >>> CALL ledoff >>> >>> ldw Y,[_charptr] >>> ldw _lcdchar, Y >>> call _lcdwritechar >>> ldw Y, _charptr >>> incw Y >>> ldw _charptr, Y >>> >>> JP main_loop >>> >>> >>> >>> >>> Le 26.09.2014 11:39, Bin Shi a écrit : >>>> the _pointer is a 16-bit variable, and stm8 is big endian. you might >>>> need >>>> >>>> ld y, _pointer >>>> addw y, #1 >>>> ld _pointer, y >>>> >>>> to replace inc _pointer >>>> >>>> r...@remi.lu编写： >>>> >>>>> >>>>> >>>>> hello >>>>> >>>>> with this code i get printed : "t3333333...." >>>>> >>>>> you think the X register gets polluted by the delay fonction ? >>>>> >>>>> Regards >>>>> >>>>> Le 26.09.2014 04:11, Ben Shi a écrit : >>>>> >>>>>> I am not sure how your function _lcdwritechar works, but I guess >>>>>> you >>>>>> might need such kind of code, >>>>>> >>>>>> .area DATA >>>>>> >>>>>> _varOne: >>>>>> >>>>>> .ds 1 >>>>>> >>>>>> _lcdchar: >>>>>> >>>>>> .ds 1 >>>>>> >>>>>> _pointer: >>>>>> >>>>>> .ds 1 >>>>>> >>>>>> ..... >>>>>> >>>>>> ldw x, #_string_0 >>>>>> >>>>>> ldw _pointer, x >>>>>> >>>>>> main_loop: >>>>>> >>>>>> LDW X, #0d50 >>>>>> >>>>>> CALL delay_m >>>>>> >>>>>> CALL ledon >>>>>> >>>>>> LDW X, #0d50 >>>>>> >>>>>> CALL delay_m >>>>>> >>>>>> CALL ledoff >>>>>> >>>>>> ldw x, [_pointer.w] >>>>>> >>>>>> ldw _lcdchar, x >>>>>> >>>>>> call _lcdwritechar >>>>>> >>>>>> inc _pointer >>>>>> >>>>>> JP main_loop >>>>>> >>>>>> .... >>>>>> >>>>>> .area CODE >>>>>> >>>>>> _string_0: >>>>>> >>>>>> .ascii "toto" >>>>>> >>>>>> .db 0x00 >>>>>> >>>>>> First, the variable _pointer is initialized to point to _string_0; >>>>>> second, in each iteration of the main loop, the content pointed by >>>>>> _pointer is moved to _lcdchar; third, _pointer increases each >>>>>> time. >>>>>> >>>>>> 在2014年09月25 23时32分，"remi"<r...@remi.lu>写道： >>>>>> >>>>>>> Hello >>>>>>> >>>>>>> I have spent a few years with MChip, I switched to stm8 recently. >>>>>>> >>>>>>> One of the reasons is pointer handeling (pic16 and 18) very >>>>>>> limited >>>>>>> ... >>>>>>> >>>>>>> and now, I am almost learning two things in the same time, STM8 >>>>>>> and >>>>>>> sdasm . >>>>>>> >>>>>>> Can some one direct me a little on how pointers are beeing >>>>>>> >>>>>>> used in sdasstm8 ? >>>>>>> >>>>>>> in this snipet, i am trying to go trhu a string and print it ... >>>>>>> >>>>>>> no luck so far, only the "t" is printed . >>>>>>> >>>>>>> I have already went thru sdccman.pdf ... but it mostly talk about >>>>>>> its C and inline assembly , >>>>>>> >>>>>>> and stm8 axemples elsewhere are for other assemblers ... :) >>>>>>> >>>>>>> my goal , is to write 100% assembly code . >>>>>>> >>>>>>> Best regards >>>>>>> >>>>>>> .area DATA >>>>>>> _varOne: >>>>>>> .ds 1 >>>>>>> _lcdchar: >>>>>>> .ds 1 >>>>>>> >>>>>>> ..... >>>>>>> >>>>>>> main_loop: >>>>>>> >>>>>>> LDW X, #0d50 >>>>>>> CALL delay_m >>>>>>> CALL ledon >>>>>>> >>>>>>> LDW X, #0d50 >>>>>>> CALL delay_m >>>>>>> CALL ledoff >>>>>>> >>>>>>> mov _lcdchar,string_0 >>>>>>> call _lcdwritechar >>>>>>> inc [string_0] >>>>>>> >>>>>>> JP main_loop >>>>>>> >>>>>>> .... >>>>>>> >>>>>>> .area CODE >>>>>>> string_0: >>>>>>> .ascii "toto" >>>>>>> .db 0x00 >>>>>>> >>>>>>> .area INITIALIZER >>>>>>> .area CABS (ABS) >>>>>> >>>>>> ------------------------------------------------------------------------------ >>>>>> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer >>>>>> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS >>>>>> Reports >>>>>> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White >>>>>> paper >>>>>> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog >>>>>> Analyzer >>>>>> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >>>>>> [1] >>>>>> >>>>>> _______________________________________________ >>>>>> Sdcc-user mailing list >>>>>> Sdcc-user@lists.sourceforge.net >>>>>> https://lists.sourceforge.net/lists/listinfo/sdcc-user [2] >>>>> >>>>> >>>>> >>>>> Links: >>>>> ------ >>>>> [1] >>>>> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >>>>> [2] https://lists.sourceforge.net/lists/listinfo/sdcc-user >>>>> >>>>> ------------------------------------------------------------------------------ >>>>> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer >>>>> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS >>>>> Reports >>>>> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White >>>>> paper >>>>> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog >>>>> Analyzer >>>>> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >>>>> _______________________________________________ >>>>> Sdcc-user mailing list >>>>> Sdcc-user@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/sdcc-user >>>> ------------------------------------------------------------------------------ >>>> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer >>>> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS >>>> Reports >>>> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper >>>> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer >>>> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >>>> _______________________________________________ >>>> Sdcc-user mailing list >>>> Sdcc-user@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/sdcc-user >>> >>> ------------------------------------------------------------------------------ >>> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer >>> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS >>> Reports >>> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper >>> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer >>> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >>> _______________________________________________ >>> Sdcc-user mailing list >>> Sdcc-user@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/sdcc-user >> >> ------------------------------------------------------------------------------ >> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer >> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS >> Reports >> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper >> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer >> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >> _______________________________________________ >> Sdcc-user mailing list >> Sdcc-user@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/sdcc-user > ------------------------------------------------------------------------------ > Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer > Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS > Reports > Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper > Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer > http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk > _______________________________________________ > Sdcc-user mailing list > Sdcc-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sdcc-user ------------------------------------------------------------------------------ Slashdot TV. Videos for Nerds. Stuff that Matters. http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
