If you send more words on RS232 repeatedly you have either to use after each word a delay to allow completion of the transmission or to check if the previous word transmission ended before sending the next word. There is a bit for this on UART.
On Sat, Aug 6, 2022 at 10:00 PM flyway38 <[email protected]> wrote: > Hi all, > > Problem seems to be solved. > It was due to using AN1 for the button (digital behaviour)... > > Right now am facing new problem. > The follwing code seems not working ok; > > code > serial_hw_write_word(0xEF2A + word(RlyCtl)) > /code > > RlyCtl is a pin (bit) > When ON, sends to serial; EF2B (correct) > When OFF, sends to serial; EF00 (Should send EF2A) > Maybe some issue on receiver side, but I think that converting bit to word > seems problematic... not sure. > > Before was using "serial_hw_write" byte by byte but with longer delay in > between (longer than NOP, wich is used by word sender) > > Any ideas? > Thank you very much. > > Cheers, > FS > > On Saturday, August 6, 2022 at 7:01:57 PM UTC+1 [email protected] wrote: > >> Hi Filip, >> >> Are you saying that the code is executing slow? >> >> If you can share your program or at least the part that is problematic >> (so it can be reproduced) that could help. >> >> BTW (for Vasile 🙂). I recently worked on a problem of Hans using the >> DS18B20. It did work on one PIC but not on a smaller one. Finally the root >> cause was the PIC running at 4 MHz which was too slow to create the correct >> one-wire timing for the DS18B20. Switching to 8 MHz solved the problem. >> This was the first time that I encountered that a library did not work >> because of a clock speed begin to low. Maybe we should add a warning to >> that library. >> >> Kind regards, >> >> Rob >> >> ------------------------------ >> *Van:* [email protected] <[email protected]> namens flyway38 >> <[email protected]> >> *Verzonden:* zaterdag 6 augustus 2022 18:39 >> *Aan:* jallib <[email protected]> >> *Onderwerp:* Re: [jallib] IF/END IF usage limit?? >> >> Hi Vasile, >> >> Thank you for the quick reply. >> Is have that feeling about something not right at some point of the code. >> In fact tried to exchange some "if/end if" for "case of" but no luck. >> Problem persists, but it seems only related to "if/end if" usage.. >> >> My code reads the ADC (PIC18F2550), for 100 times in a "for/end loop". >> Then find the median of values read and send that median value to RS232. >> Also has a button to do some extra actions. >> All this code worked great even in a smaller PIC (16F18313). >> >> Now have changed PIC for the 18F2550 and wanted to add some extra code to >> manage PWM and ADC reading times to find the median value. >> Also added an oled display to show locally that value and the PWM/ ADC >> nr. of readings parameters. That's when this issue raised up. >> Simptoms are the code running sluggish, not hangging... >> Any ideas? >> Thank you very much. >> >> Cheers, >> Filipe Santos >> >> >> On Saturday, August 6, 2022 at 5:13:36 PM UTC+1 vasile wrote: >> >> This issue appears usually when you do not manage in a correct way the >> timing required by a specific hardware and the costs of your code length is >> higher than required for the device to run properly. Common workaround is >> to use interrupts or other sequential techniques. >> >> Example: DS18B20 is a temperature sensor which requires 750ms or so for a >> 12bit conversion. If you have complex software involving USB interrupts, >> real time clock generation, 7segment LED multiplexed display, etc , and >> those are not shared correctly with your resources ( aka you try everything >> to be solved in pure software) at one moment your code will freeze at a >> specific code length. Removing some lines, no matter that are if/end if or >> something else will apparently make your code functional, but the issue is >> not where you suppose it is... >> >> Instead of if/end if you may use "case of". However it will not do >> something special or different compared with if/end if, except a more >> understandable structure for your source. >> best wishes, >> >> >> On Sat, Aug 6, 2022 at 7:00 PM flyway38 <[email protected]> wrote: >> >> Hi all, >> >> Is there any limit in using IF/ END IF conditions? >> My code was running good untill added one more IF/END IF. >> At first didn't realize about a limit in using these conditions code, but >> then figured out that any other IF/END IF removal would let my code run ok >> again... >> Does anyone knows anything about this issue? >> Thank you very much. >> >> Cheers, >> Filipe Santos. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "jallib" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/jallib/3f8189dd-fd0a-4df9-8948-518503485e61n%40googlegroups.com >> <https://groups.google.com/d/msgid/jallib/3f8189dd-fd0a-4df9-8948-518503485e61n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> -- >> You received this message because you are subscribed to the Google Groups >> "jallib" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/jallib/d77c7605-af0d-43ff-b2fb-4fe3a987e507n%40googlegroups.com >> <https://groups.google.com/d/msgid/jallib/d77c7605-af0d-43ff-b2fb-4fe3a987e507n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "jallib" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jallib/b9e198a8-1cf5-4e91-adbd-d41cd5a68bf8n%40googlegroups.com > <https://groups.google.com/d/msgid/jallib/b9e198a8-1cf5-4e91-adbd-d41cd5a68bf8n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "jallib" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jallib/CAM%2Bj4qvZu3c7RGVmfQrtNn310Rh5s30zWFmDmGLC0OBm%3D9ST2Q%40mail.gmail.com.
