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| Search found 50 matches |
| Author | Message |
|---|---|
 Topic: PIC16F877A keeps resetting |
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| Nora Replies: 9 Views: 16204 |
 Forum: General CCS C Discussion Posted: Sat Jul 30, 2011 10:13 am Subject: PIC16F877A keeps resetting |
| Hello and Happy Saturday!
I have a couple more power supply questions. Here is the complete schematic: http://mix-engineering.com/wp-content/uploads/2011/07/HeartBeat-Dome2.pdf 1. I am running ... |
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| Topic: Help to understand SET_PWM1_DUTY function |
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| Nora Replies: 8 Views: 34133 |
Forum: General CCS C Discussion Posted: Sat Jul 30, 2011 8:52 am Subject: Help to understand SET_PWM1_DUTY function |
| Hello-
It is not at all clear (to me) how to set the PWM function. I have it working, but can't get a handle on what the value is doing. I am using it to flash some LEDs. I turn off the LEDs with ... |
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| Topic: PIC16F877A keeps resetting |
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| Nora Replies: 9 Views: 16204 |
Forum: General CCS C Discussion Posted: Tue Jul 26, 2011 5:51 pm Subject: PIC16F877A keeps resetting |
| temtronic
That worked. I would never have figured that out. I didn't have a 5,000mcf, but I put a 1,000mcf in there (on the 7.5 supply) and my speaker switches. So big thanks to you! Will do ... |
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| Topic: PIC16F877A keeps resetting |
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| Nora Replies: 9 Views: 16204 |
Forum: General CCS C Discussion Posted: Tue Jul 26, 2011 4:59 pm Subject: PIC16F877A keeps resetting |
| Hello. Thanks for all the comments.
w2drz There is a diode across the coil. Bar to the +, as shown in the diagram, except that it is actually external. Edit* added diode across the contacts. It s ... |
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| Topic: PIC16F877A keeps resetting |
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| Nora Replies: 9 Views: 16204 |
Forum: General CCS C Discussion Posted: Mon Jul 25, 2011 7:32 pm Subject: PIC16F877A keeps resetting |
| Hello!
I am using the PIC16877A to switch a relay. I'm using an NPN circuit with a 2k resistor on the base. http://mix-engineering.com/wp-content/uploads/2011/07/FAN.jpg When I hold the pin B3 ... |
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| Topic: Timer0 with PIC16F877A |
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| Nora Replies: 2 Views: 4237 |
Forum: General CCS C Discussion Posted: Fri Jul 15, 2011 6:57 am Subject: Timer0 with PIC16F877A |
| Thanks for the reply PCM. I did as suggested and no joy.
I eventually got it to work and for completeness, am posting the solution. Turns out I was using the wrong function (I am definitely not sle ... |
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| Topic: Timer0 with PIC16F877A |
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| Nora Replies: 2 Views: 4237 |
Forum: General CCS C Discussion Posted: Thu Jul 14, 2011 7:43 pm Subject: Timer0 with PIC16F877A |
| I copied this code from another thread and am unsure as to why it doesn't work.
I have read a ton of stuff on this forum and in the F877A data sheet about timer0, but I must be missing something. T ... |
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| Topic: Use 3.3V to program Low voltage chips? |
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| Nora Replies: 4 Views: 8315 |
Forum: General CCS C Discussion Posted: Mon Jul 11, 2011 5:56 pm Subject: Use 3.3V to program Low voltage chips? |
| Thanks!
But does the low voltage operating chip need to be programmed with low voltage? I'm confused...my USB puts out 5V, so how do I program with 3.3? N_N |
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| Topic: Use 3.3V to program Low voltage chips? |
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| Nora Replies: 4 Views: 8315 |
Forum: General CCS C Discussion Posted: Mon Jul 11, 2011 2:53 pm Subject: Use 3.3V to program Low voltage chips? |
| Hi-
I'm trying to make the jump from 5V to 3.3V and have had a series of bad decisions and things that don't work etc. I need to get a programmer-chip setup that is compatible with both MP Lab and th ... |
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| Topic: MCLR pin won't pull low for ICSP |
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| Nora Replies: 5 Views: 9489 |
Forum: General CCS C Discussion Posted: Sun Jul 10, 2011 9:28 am Subject: MCLR pin won't pull low for ICSP |
| Thanks- I just read operating voltage between 2.2 and 5.5 and thought I could use 3.3V. Shucks! In fact, I used the configurator on the Microchip website to select this chip specifically to be 3.3 ope ... | |
| Topic: MCLR pin won't pull low for ICSP |
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| Nora Replies: 5 Views: 9489 |
Forum: General CCS C Discussion Posted: Sun Jul 10, 2011 6:06 am Subject: MCLR pin won't pull low for ICSP |
| No, not a glitch, I had it set to "private". Not on purpose, obvs.
Also, the schematic as shown is incorrect - +5V should be +3.3V. There is no 5V supply on my board. Do I need special ... |
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| Topic: MCLR pin won't pull low for ICSP |
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| Nora Replies: 5 Views: 9489 |
Forum: General CCS C Discussion Posted: Sat Jul 09, 2011 9:20 pm Subject: MCLR pin won't pull low for ICSP |
| Hello!
Best thing to be doing on Saturday night is messing around with an ICSP circuit. Grrr. I'm using a PIC18F2423 and am using it at the 3.3V level. Using the CCS compiler and MP Lab to program ... |
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| Topic: RFM12B nIRQ pin |
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| Nora Replies: 38 Views: 109440 |
Forum: General CCS C Discussion Posted: Fri May 06, 2011 6:28 am Subject: RFM12B nIRQ pin |
| I never got these to work. I purchased a development board (AVR) with preloaded software on it just to look at the signals to figure out how it is supposed to work.
No joy. The software (that I did ... |
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| Topic: Would like help understanding 74595 library |
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| Nora Replies: 2 Views: 9722 |
Forum: General CCS C Discussion Posted: Sun Mar 27, 2011 5:02 am Subject: Would like help understanding 74595 library |
| Thanks PCM! | |
| Topic: Would like help understanding 74595 library |
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| Nora Replies: 2 Views: 9722 |
Forum: General CCS C Discussion Posted: Sat Mar 26, 2011 3:42 pm Subject: Would like help understanding 74595 library |
| Hello-
I am using the 74595.c library (successfully with one 74595 module). I am unclear to how it actually works and was hoping someone here could explain it to me. Especially this line if(& ... |
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