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  Topic: CCS + PDFSUSB
Rohit de Sa

Replies: 4
Views: 8430

PostForum: General CCS C Discussion   Posted: Sat Jul 21, 2012 7:01 am   Subject: CCS + PDFSUSB
So I'm getting somewhere with this. I've kinda-sorta-maybe figured out how to fix this issue, but I'll need to play around with it more. Apparently PDFSUSB has an issue with parsing addresses generate ...
  Topic: I2C problems ???
Rohit de Sa

Replies: 8
Views: 10704

PostForum: General CCS C Discussion   Posted: Fri Jul 20, 2012 11:50 am   Subject: I2C problems ???
You really could have made this much easier for others. There was absolutely no need to use a PDF. That's probably why you've not yet got answers. Your questions should simply have been:
-I don’t k ...
  Topic: CCS + PDFSUSB
Rohit de Sa

Replies: 4
Views: 8430

PostForum: General CCS C Discussion   Posted: Thu Jul 19, 2012 8:08 am   Subject: CCS + PDFSUSB
So, I've checked the hex files generated with two utilities
https://github.com/codinghead/Intel-HEX-Class/downloads and hexmate from HiTech http://www.schmalzhaus.com/Tools/HexmateInstructions.html
...
  Topic: CCS + PDFSUSB
Rohit de Sa

Replies: 4
Views: 8430

PostForum: General CCS C Discussion   Posted: Thu Jul 19, 2012 7:32 am   Subject: CCS + PDFSUSB
Read back working code from the chip. The first line of the hex file is :020000040000FASo this is a INHX32 file right?

This is what the compiler/MPLAB generates::0408000019EF04F0F8Also INHX ...
  Topic: CCS + PDFSUSB
Rohit de Sa

Replies: 4
Views: 8430

PostForum: General CCS C Discussion   Posted: Thu Jul 19, 2012 2:33 am   Subject: CCS + PDFSUSB
PIC18F2550, 20MHz, CCS 4.114

I've compiled and burned Microchip's CDC bootloader onto my '2550. However I'm having problems loading user code on the PIC with PDFSUSB. After staying up almost the wh ...
  Topic: IR communication
Rohit de Sa

Replies: 4
Views: 6687

PostForum: General CCS C Discussion   Posted: Thu Jun 02, 2011 3:07 am   Subject: IR communication
You haven't mentioned what receiver you're using, but I'm assuming it is one of the TSOP17xx type or IR demodulators. The datasheet, apart from several other things, says that the burst length should ...
  Topic: Nokia 6610 LCD + '877 code issue
Rohit de Sa

Replies: 4
Views: 7656

PostForum: General CCS C Discussion   Posted: Mon May 23, 2011 4:03 am   Subject: Nokia 6610 LCD + '877 code issue
UPDATE:

Ok, the code seems to 'work' if I break the driver into functions and allocate each function a memory area (using #org). Now this approach is fine for some functions, but the method fails f ...
  Topic: Nokia 6610 LCD + '877 code issue
Rohit de Sa

Replies: 4
Views: 7656

PostForum: General CCS C Discussion   Posted: Mon May 23, 2011 3:48 am   Subject: Nokia 6610 LCD + '877 code issue
I've shifted the tables to the last ROM page by using a #org directive. However, even now if my code (not including the tables) is longer than 2048 words the PIC stays in reset.

I've tried sprinkli ...
  Topic: IR communication
Rohit de Sa

Replies: 4
Views: 6687

PostForum: General CCS C Discussion   Posted: Sun May 22, 2011 12:07 pm   Subject: IR communication
How is the LED connected to the 555 output? Is the 555 a source or a sink? Try inverting the output (active high to active low, or vice versa).

Rohit
  Topic: Nokia 6610 LCD + '877 code issue
Rohit de Sa

Replies: 4
Views: 7656

PostForum: General CCS C Discussion   Posted: Sun May 22, 2011 11:58 am   Subject: Nokia 6610 LCD + '877 code issue
I'm having a funny problem; I don't really know what the root cause is. I think its because my code spills over into the next ROM page (ie memory used is over 2048 words), but I'm not sure.

This is ...
  Topic: CC2500 RF modules
Rohit de Sa

Replies: 2
Views: 5765

PostForum: General CCS C Discussion   Posted: Tue Dec 07, 2010 10:54 am   Subject: CC2500 RF modules
Thanks for the quick response, Frank. So resistive divider it is!

I'm surprised no one's uploaded a CC1100/CC2500 driver yet. Guess I'll be the one to do so! :-P

Rohit
  Topic: CC2500 RF modules
Rohit de Sa

Replies: 2
Views: 5765

PostForum: General CCS C Discussion   Posted: Tue Dec 07, 2010 10:02 am   Subject: CC2500 RF modules
I've been thinking of purchasing the TI/Chipcon CC2500 2.4GHz RF modules found here http://allsensor.in/shop/product_info.php?cPath=56&products_id=158

I'd like to interface this to an '877A. Fr ...
  Topic: 24FJ64002 FRC trouble
Rohit de Sa

Replies: 2
Views: 4101

PostForum: General CCS C Discussion   Posted: Thu Sep 23, 2010 7:01 am   Subject: 24FJ64002 FRC trouble
Possibly an extended syntax like #use delay (oscillator=8Mhz, clock=32Mhz) is requiredBingo! The exact code is:#use delay (internal=8Mhz, clock=32Mhz)Thanks!

Rohit
  Topic: dsPIC30F2020 PWM frequency
Rohit de Sa

Replies: 2
Views: 6800

PostForum: General CCS C Discussion   Posted: Thu Sep 23, 2010 3:15 am   Subject: dsPIC30F2020 PWM frequency
Thanks for the reply Frank. I'm going to be doing some heavy math (PID, Kalman, etc) and use the PIC for a lot of other system management, so I want all the processor time I can get. To use a timer fo ...
  Topic: 24FJ64002 FRC trouble
Rohit de Sa

Replies: 2
Views: 4101

PostForum: General CCS C Discussion   Posted: Thu Sep 23, 2010 3:09 am   Subject: 24FJ64002 FRC trouble
Hi everyone,

I'm using a 24FJ64GA002 with its internal fast RC oscillator. My problem is that the clock frequency (as measured on OSCO/pin10) is half the frequency it should be. My fuses:#fuses FRC ...
 
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