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I have the MAX232 in place. I'm quite sure that isnt the problem. When I set the same baud rate at both ends there's no output.
But when I kept Baud rate at computer end low and that at PIC end very high, I get some incorrect output (mostly garbage values)
I'm using RS232 to transmit and receive characters between a dsPIC33 microcontroller and a computer. I'm not getting any output at the computer terminal. I tried to see the received characters on HyperTerminal as well as Flash Magic terminal.
I checked the Rx and TX pins of the microcontroller...
Hi all,
I am presently working on DSPIC33 and exploring its serial communication (UART) module. I am trying to send a single letter from PIC to PC at 9600 baud/sec 8-n-1 format.
When I checked output at the DB9 connector pins on oscilloscope it shows a perfect binary output with +10 and -10...
hello
I want to test serial communication between dsPIC33FJ128MC202 and PC. I tried the example code given in the dsPIC manual (Section 17 UART). But there is no output at all. I'm checking output on the Hyperterminal of my PC.
Can someone tell me how I can check if the UART module within the...
Hi,
I have a circuit that gives a PWM signal at 20Khz with maximum average voltage at 1.6v. I need to amplify and filter this signal to a variable DC voltage ranging from 0-5v or 0-10v.
I tried using a 741 op-amp and RC filter. It simulates perfectly in Multisim but practically gives a constant...
Hi,
I am controlling the speed of a motor from a PWM signal at 20kHz. The max voltage I'm getting at 100% duty cycle is around 2V. The motor requires 0 to 10v dc. I have an RC filter in place which is working fine.
But how do I amplify this to a variable 0-10v dc? I can put the filter either...
Re: dspic33 no output
These are the configuration bit setting i tried using:
_FOSCSEL(FNOSC_FRC);
_FOSC(FCKSM_CSECME & OSCIOFNC_ON & POSCMD_NONE);
Is there anything else i need to do with the configuration bits ?
I'm using a Pickit2 for programming.
Hi,
I'm trying to send all 1's to output pins of dspic33fj128mc202. My programming and verification is done correctly. But there is no voltage at output pins. Here's the code
#include <p33FJ128MC202.h>
int main(void)
{
AD1PCFGL = 0xffff; //All analog capable pins in digital mode...
Hi,
k it seems there was a voltage supply problem in the entire PCB. The ground plane was not at 0V. I removed two decoupling capacitors and now ground plane is at 0v and all supply voltages are correct.
But now when I program the dsPIC there is to output at all. The IC gets programed and...
Hi
I'm using a 7805 to power a dsPIC33 controller PCB. I've built the 7805 circuit separately on a breadboard. It gives an exact 5v o/p on the breadboard but when i connect ground pin of the controller PCB to it the output goes to around 3.5v and then starts reducing slowly. It means that the...
Thanks for your replies.
I do have a current limiting resistor it doesn't help. And even when i do not connect the LEDs the controller pin shows 1.43v at logic high.
I'm quite sure it's not giving an average value because I'm using a very low frequency and I can see it going from 0v to 1.43v...
HI,
I'm testing a dsPIC33FJ128MC202 and trying to run a basic program to blink an LED .
The programming (with PICKIT2) is working fine but the voltage that I get at logic1 is 1.43V.
How do I get the pin to output higher voltage?
I've tried changing core capacitor but it doesn't seem to...
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