ON 20030709@11:00:15 AM at page: http://www.piclist.com/techref/piclist/projects.htm JS--742a Johan Strombom I have agreed to maintain this page. ON 20030709@11:01:29 AM at page: http://www.piclist.com/techref/piclist/projects.htm JS--742a Johan Strombom edited the page. Difference: http://www.piclist.com/techref/diff.asp?url=H:\techref\piclist\projects.htm&version=94 ON 20030709@11:03:47 AM at page: http://www.piclist.com/techref/piclist/projects.htm JS--742a Johan Strombom edited the page. Difference: http://www.piclist.com/techref/diff.asp?url=H:\techref\piclist\projects.htm&version=95 ON 20030711@4:10:33 PM at page: http://www.piclist.compiclist/weedfreq.htm JMN-EFP-786 James Newton removed post 37813.2401736111 |Delete ' Dear Sir
is it possible to upgrade this circuit to 80 Mhz ?
In this case , what are the modifications to do ?
Great thanks' ON 20030715@2:58:01 PM at page: http://www.piclist.compiclist/weedfreq.htm JMN-EFP-786 James Newton published post 37817.3453587963 tkoch@rogers.com asks: " /techref/piclist/weedfreq.htm Why do you use the 74HC132 in your circuit? And can I use a LCD with a back light and a 7805 with a 13V DC 1 A power supply?" |Delete 'P-' before: '' but after: ' i am a junior. How to do from asm to hex file' ON 20030722@4:36:42 PM at page: http://www.piclist.compiclist/begin.htm JMN-EFP-786 James Newton published post 37820.3489583333 After battling with a 18f452 for ages, trying to get it to run at 40 mhz using the PLL_HS with a 10 mhz resinator, all I could get it to do was oscilate at 10 mhz. The solution is to add a 4m7 resistor across the osc1 and osc2 pins. Works like a charm!
.Barney.
|Delete 'P-' before: '' but after: ' After battling with a 18f452 for ages, trying to get it to run at 40 mhz using the PLL_HS with a 10 mhz resinator, all I could get it to do was oscilate at 10 mhz. The solution is to add a 4m7 resistor across the osc1 and osc2 pins. Works like a charm I'm so overjoyed.
.Barney. ' ON 20030722@4:37:18 PM at page: http://www.piclist.com/techref/piclist/questions.htm JMN-EFP-786 James Newton removed post 37805.6080324074 |Delete 'steve_smb@hotmail.com asks:
I am new to using microcontrollers and up until now I have had no problems. But I haven’t been able to figure out why my PORTA & E doesn’t seem to work on my 16f877. I have used numerous different ways of initialising the port (including the recommended example on page 29 of microchips manual).
e.g. Why doesn’t this piece of code have any effect on PORTA or E’s pins?

bcf STATUS,RP0
bcf STATUS,RP1
CLRF PORTA
bsf STATUS,RP0
movlw d'0'
movwf ADCON1
movlw b'00000000'
movwf TRISA

bsf PORTA,0
bsf PORTA,1
bsf PORTA,2
bsf PORTA,3
bsf PORTA,4
bsf PORTA,5
bsf PORTA,6
bsf PORTE,0
bsf PORTE,1
bsf PORTE,2 ;At this point portA & E pins are all 0

I would appreciate any advice on this matter?
' ON 20030722@4:37:24 PM at page: http://www.piclist.com/techref/piclist/questions.htm JMN-EFP-786 James Newton removed post 37805.6075578704 |Delete 'steve_smb@hotmail.com asks:
I am new to using microcontrollers and up until now I have had no problems. But I haven’t been able to figure out why my PORTA & E doesn’t seem to work on my 16f877. I have used numerous different ways of initialising the port (including the recommended example on page 29 of microchips manual).
e.g. Why doesn’t this piece of code have any effect on PORTA or E’s pins?

bcf STATUS,RP0
bcf STATUS,RP1
CLRF PORTA
bsf STATUS,RP0
movlw d'0'
movwf ADCON1
movlw b'00000000'
movwf TRISA

bsf PORTA,0
bsf PORTA,1
bsf PORTA,2
bsf PORTA,3
bsf PORTA,4
bsf PORTA,5
bsf PORTA,6
bsf PORTE,0
bsf PORTE,1
bsf PORTE,2 ;At this point portA & E pins are all 0

I would appreciate any advice on this matter?
' ON 20030722@4:37:31 PM at page: http://www.piclist.com/techref/piclist/questions.htm JMN-EFP-786 James Newton removed post 37784.3600578704 |Delete ' Says: " Why not split the "PICList" into multiple mailing lists (i.e. pic@piclist.org, avr@piclist.org, ee@piclist.org, etc...)? " James Newton replies: Mostly because we don't own the mailing list server (MIT is kind enough to host the list and pay for the bandwidth) and so can not ask for more than one list. The topic tag system allows you to filter out the types of messages you don't want.

Questions: