Post by thread:[PIC]:PIC16F877 jal code to beep 5s

There is a better way using tmr1, with next routine pic is busy all that 5 seconds just with delays...Maybe you want to sing a real song Check at http://www.piclist.com/jal By, Vasile http://www.geocities.com/vsurducan/pic.htm include f877_4 include jpic include jdelay -- noise generation procedure with variable tones pin_d1_direction = output var byte ton = 66 for 255 loop -- 255 x 15 x 10uS x 2 x 66 = 5049 mS for 15 loop pin_d1 = high delay_10uS ( ton ) pin_d1 = low delay_10uS ( ton ) end loop end loop On Wed, 17 Jan 2001, Paul Chicofsky wrote: {Quote hidden}> Hi all > > Any body know how to program the pic16f877 so it outputs a beep to a speaker > for only 5 seconds? > > Thank you > > Samer > > _________________________________________________________________________ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Vasile, Correct me if I'm wrong, but if you have the output on for 10uS and off for 10uS, that's a period of 20uS which equates to a frequency of 50Khz, and this 50Khz signal would last for about 5 seconds. So even if it was working, you wouldn't know it unless you're a dog or cat or something. Just a thought... Regards, Jim On Wed, 17 January 2001, Vasile Surducan wrote: {Quote hidden}> > There is a better way using tmr1, with next routine pic is busy all > that 5 seconds just with delays...Maybe you want to sing a real song > Check at http://www.piclist.com/jal > By, Vasile > http://www.geocities.com/vsurducan/pic.htm > > > include f877_4 > include jpic > include jdelay > > -- noise generation procedure with variable tones > > pin_d1_direction = output > var byte ton = 66 > > for 255 loop -- 255 x 15 x 10uS x 2 x 66 = 5049 mS > for 15 loop > pin_d1 = high > delay_10uS ( ton ) > pin_d1 = low > delay_10uS ( ton ) > end loop > end loop > > > On Wed, 17 Jan 2001, Paul Chicofsky wrote: > > > Hi all > > > > Any body know how to program the pic16f877 so it outputs a beep to a speaker > > for only 5 seconds? > > > > Thank you > > > > Samer > > > > _________________________________________________________________________ > > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > > > -- > > http://www.piclist.com hint: PICList Posts must start with ONE topic: > > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > > > > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics spam_OUTjimTakeThisOuTjpes.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

He, he, I like your ideea with dogs... but it's wrong because delay_10uS ( 66 ) means 660uS so, 660uS x 2 ( one on one off ) = 1.2 ms 1/1.2mS = 833,(33) Hz which is a perfect buzz sound even for a human ear. Cheers, Vasile On Thu, 18 Jan 2001, James Paul wrote: {Quote hidden}> Vasile, > > Correct me if I'm wrong, but if you have the output on for 10uS > and off for 10uS, that's a period of 20uS which equates to a > frequency of 50Khz, and this 50Khz signal would last for about > 5 seconds. So even if it was working, you wouldn't know it unless > you're a dog or cat or something. Just a thought... > > Regards, > > Jim > > > > > > On Wed, 17 January 2001, Vasile Surducan wrote: > > > > > There is a better way using tmr1, with next routine pic is busy all > > that 5 seconds just with delays...Maybe you want to sing a real song > > Check at http://www.piclist.com/jal > > By, Vasile > > http://www.geocities.com/vsurducan/pic.htm > > > > > > include f877_4 > > include jpic > > include jdelay > > > > -- noise generation procedure with variable tones > > > > pin_d1_direction = output > > var byte ton = 66 > > > > for 255 loop -- 255 x 15 x 10uS x 2 x 66 = 5049 mS > > for 15 loop > > pin_d1 = high > > delay_10uS ( ton ) > > pin_d1 = low > > delay_10uS ( ton ) > > end loop > > end loop > > > > > > On Wed, 17 Jan 2001, Paul Chicofsky wrote: > > > > > Hi all > > > > > > Any body know how to program the pic16f877 so it outputs a beep to a speaker > > > for only 5 seconds? > > > > > > Thank you > > > > > > Samer > > > > > > _________________________________________________________________________ > > > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > > > > > -- > > > http://www.piclist.com hint: PICList Posts must start with ONE topic: > > > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > > > > > > > > > -- > > http://www.piclist.com hint: The list server can filter out subtopics > > (like ads or off topics) for you. See http://www.piclist.com/#topics > > .....jimKILLspam@spam@jpes.com > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

Vasile, Gotcha. I see that now. I should have paid a little more attention, and I would have seen it before. Sorry for bothering you. Thanks and Regards, Jim On Fri, 19 January 2001, Vasile Surducan wrote: {Quote hidden}> > He, he, I like your ideea with dogs... > but it's wrong because delay_10uS ( 66 ) means 660uS > so, 660uS x 2 ( one on one off ) = 1.2 ms > 1/1.2mS = 833,(33) Hz which is a perfect buzz sound even for a human ear. > Cheers, Vasile > > > On Thu, 18 Jan 2001, James Paul wrote: > > > Vasile, > > > > Correct me if I'm wrong, but if you have the output on for 10uS > > and off for 10uS, that's a period of 20uS which equates to a > > frequency of 50Khz, and this 50Khz signal would last for about > > 5 seconds. So even if it was working, you wouldn't know it unless > > you're a dog or cat or something. Just a thought... > > > > Regards, > > > > Jim > > > > > > > > > > > > On Wed, 17 January 2001, Vasile Surducan wrote: > > > > > > > > There is a better way using tmr1, with next routine pic is busy all > > > that 5 seconds just with delays...Maybe you want to sing a real song > > > Check at http://www.piclist.com/jal > > > By, Vasile > > > http://www.geocities.com/vsurducan/pic.htm > > > > > > > > > include f877_4 > > > include jpic > > > include jdelay > > > > > > -- noise generation procedure with variable tones > > > > > > pin_d1_direction = output > > > var byte ton = 66 > > > > > > for 255 loop -- 255 x 15 x 10uS x 2 x 66 = 5049 mS > > > for 15 loop > > > pin_d1 = high > > > delay_10uS ( ton ) > > > pin_d1 = low > > > delay_10uS ( ton ) > > > end loop > > > end loop > > > > > > > > > On Wed, 17 Jan 2001, Paul Chicofsky wrote: > > > > > > > Hi all > > > > > > > > Any body know how to program the pic16f877 so it outputs a beep to a speaker > > > > for only 5 seconds? > > > > > > > > Thank you > > > > > > > > Samer > > > > > > > > _________________________________________________________________________ > > > > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > > > > > > > -- > > > > http://www.piclist.com hint: PICList Posts must start with ONE topic: > > > > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > > > > > > > > > > > > > -- > > > http://www.piclist.com hint: The list server can filter out subtopics > > > (like ads or off topics) for you. See http://www.piclist.com/#topics > > > > jimKILLspamjpes.com > > > > -- > > http://www.piclist.com hint: The list server can filter out subtopics > > (like ads or off topics) for you. See http://www.piclist.com/#topics > > > > > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. .....jimKILLspam.....jpes.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.