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  Topic: Timer 2 Question.
tcruise7771

Replies: 3
Views: 6258

PostForum: General CCS C Discussion   Posted: Tue Jun 25, 2013 6:50 am   Subject: Timer 2 Question.
Mike you are right , i just checked the video i made for the comparison with real oscilloscope and it was showing 305.1 but somehow i remembered it showed exact value.

You are right that i should r ...
  Topic: Timer 2 Question.
tcruise7771

Replies: 3
Views: 6258

PostForum: General CCS C Discussion   Posted: Tue Jun 25, 2013 5:49 am   Subject: Timer 2 Question.
Hello .

I have a question about Timer 2. I have a program for PWM.
I am running it on PIC18F4550 at 5MHz using external crystal of 20MHz, and fuses HS, PLL5 and CPUDIV4 ( so it will run at 5MHz) ...
  Topic: Buttons , Internal pull up ?
tcruise7771

Replies: 5
Views: 13754

PostForum: General CCS C Discussion   Posted: Sun Jun 23, 2013 11:41 am   Subject: Buttons , Internal pull up ?
Ok hardware it is then. I am using port B for 8bit parallel communication for 128x64 display so port B is already used up Smile I have some pins from C available and alot of pins on port D, so i will se ...
  Topic: Buttons , Internal pull up ?
tcruise7771

Replies: 5
Views: 13754

PostForum: General CCS C Discussion   Posted: Sat Jun 22, 2013 6:46 pm   Subject: Buttons , Internal pull up ?
Yes i am using:
but_C= input(PIN_C6) and then
while (input(PIN_C6) != but_C) {....
I know how the pull up resistor works, but my teacher mentioned to me that there is a way to use the internal pu ...
  Topic: Buttons , Internal pull up ?
tcruise7771

Replies: 5
Views: 13754

PostForum: General CCS C Discussion   Posted: Sat Jun 22, 2013 11:47 am   Subject: Buttons , Internal pull up ?
PIC16F877A and PIC18F4550.

Hello i have a PCB that i made , it already has 2 buttons with pullup resistors ( 5V-> 4.7K res-> Pin . When button is pressed it grounds the input. They work fine ...
  Topic: Source printing? Export source to png?jpg?
tcruise7771

Replies: 6
Views: 7228

PostForum: General CCS C Discussion   Posted: Fri Jun 21, 2013 9:46 am   Subject: Source printing? Export source to png?jpg?
From all the variants i found out the best was PDF. My initial idea was making too much mess of the document. The only problem of PDF is that for example #include <PIC16F877A.h> becomes < ...
  Topic: Frequency , Timer1 and Division question.
tcruise7771

Replies: 5
Views: 8514

PostForum: General CCS C Discussion   Posted: Fri Jun 21, 2013 8:52 am   Subject: Frequency , Timer1 and Division question.
Guys guys, i said "i am using 20MHz crystal , PIC16F877A at 20MHz, t1_overflow for exactly 1 second and i use it to make32(msb,lsb). So the value would be as big as the counts the timer can disti ...
  Topic: Frequency , Timer1 and Division question.
tcruise7771

Replies: 5
Views: 8514

PostForum: General CCS C Discussion   Posted: Fri Jun 21, 2013 5:15 am   Subject: Frequency , Timer1 and Division question.
Quick question I have a Frequency Counter , but i have no source to test its real maximum frequency limit. The highest i tested was 750kHz with step of 1Hz and it was pretty acurate like 0.02% or more ...
  Topic: Source printing? Export source to png?jpg?
tcruise7771

Replies: 6
Views: 7228

PostForum: General CCS C Discussion   Posted: Thu Jun 20, 2013 1:32 pm   Subject: Source printing? Export source to png?jpg?
Ttelmah, your advice led me to the idea of choosing Microsoft XPS Document Writer and all text is saved with the formatting and colors.
Weirdly all the virtual pdf printers i found reported some kind ...
  Topic: Source printing? Export source to png?jpg?
tcruise7771

Replies: 6
Views: 7228

PostForum: General CCS C Discussion   Posted: Thu Jun 20, 2013 8:43 am   Subject: Source printing? Export source to png?jpg?
Hello i have program that i want to copy some of the fragments/parts of it into a .doc file and keeping the formatting and colors of the text. So far i have been doing such thing by making a print sc ...
  Topic: Question about storing a variable into pic eeprom.
tcruise7771

Replies: 7
Views: 12371

PostForum: General CCS C Discussion   Posted: Mon Jun 10, 2013 3:38 am   Subject: Question about storing a variable into pic eeprom.
Ttelmah,
thanks for the detailed information. I was very confused on when BAD DATA happens in EEPROM. I see i shouldn't worry that much about it since writing to the EEPROM will only be done for th ...
  Topic: Question about storing a variable into pic eeprom.
tcruise7771

Replies: 7
Views: 12371

PostForum: General CCS C Discussion   Posted: Sun Jun 09, 2013 11:43 pm   Subject: Question about storing a variable into pic eeprom.
asmboy i have initialised the checksum

unsigned int16 tempchksum
tempchksum= make16((read_eeprom(2),read_eeprom(3);
if (chksum !=tempchksum)


its just your c ...
  Topic: Question about storing a variable into pic eeprom.
tcruise7771

Replies: 7
Views: 12371

PostForum: General CCS C Discussion   Posted: Sun Jun 09, 2013 3:46 pm   Subject: Question about storing a variable into pic eeprom.

unsigned int16 chksum;
chksum=0xC55C;
write_eeprom(0, varhigh);
chksum +=varhigh;
write_eeprom(1, varlow);
// to write LSB
chksum +=varlow;
write_eeprom(2, make8 ...
  Topic: Question about storing a variable into pic eeprom.
tcruise7771

Replies: 7
Views: 12371

PostForum: General CCS C Discussion   Posted: Sun Jun 09, 2013 2:24 pm   Subject: Question about storing a variable into pic eeprom.
Hello,
I have PIC18F4550 (48 MHz) and PIC16F877A( 20MHz). I Have different codes running on both of them but basically they both depend on a variable that is used as a multiplier.

int16 multipli ...
  Topic: FUSES for PIC18F4550 to run at 32kHz , 1 MHz or 4 MHz ?
tcruise7771

Replies: 5
Views: 15187

PostForum: General CCS C Discussion   Posted: Tue May 28, 2013 2:33 am   Subject: FUSES for PIC18F4550 to run at 32kHz , 1 MHz or 4 MHz ?
Thanks Ttelmah , if i select INTEC what other fuses i would need to select to tell to use the first +/-10% , HF ? Does that 10% is constant during the PIC running time, or it changes like every secon ...
 
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