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Tag Archives: dsPIC30F4011
Generating antiphase PWM signals with the dsPIC30F4011
I frequently receive queries from people who are using a dsPIC microcontroller to control power electronics of some kind, such as in an inverter, a voltage converter, or similar. Many of these queries relate to the generation of different combinations … Continue reading
Posted in Uncategorized
Tagged antiphase, C, dsPIC, dsPIC30F, dsPIC30F4011, duty cycle, example, interrupt, oscilloscope, OSYNC, out of phase, PDC1, PICkit 2, PTPER, pulse-width modulation, PWM, PWM1H, PWM1L, sawtooth, sawtooth wave, simple example, tutorial, XC16, _POUT1H, _POUT1L, _POVD1H, _POVD1L, _PTCKPS, _PWMIE, _PWMIF, _PWMInterrupt
3 Comments
Using a dsPIC30F4011 to generating 4 PWM signals with equal duty cycles but at 90 degree phase increments
In a recent comment on one of my blog posts, Saptarshi De posed an interesting problem: How can the dsPIC30F4011 be used to generate four PWM signals of equal (but variable) duty cycle at 90 degree phase increments? Saptarshi wants … Continue reading
Posted in Uncategorized
Tagged 4-phase, 90 degree, boost, converter, dsPIC, dsPIC30F4011, duty cycle, interleaved, inverter, OC1, OC2, OC3, OC4, output compare, phase shift, PWM
22 Comments
First attempt at printing to an LCD display from a dsPIC30F4011
The following example is my first attempt at printing to an LCD display using the dsPIC30F4011 microcontroller. The display I’m using is a 16×1 character screen with what I think is a standard Hitachi interface. It’s my first time using … Continue reading
Simple interrupt-driven sampling example for the dsPIC30F4011
Reader Swetha wrote in with a query about performing 10Hz sampling on a dsPIC30F4011 in some kind of energy monitoring system. The following example illustrates a basic structure for interrupt-driven sampling using Timer 1. I compiled this program with Microchip’s … Continue reading
Updated version of IGBT control program for buck-boost dc-dc converter
This is an updated version of my IGBT control example for the dsPIC30F4011, which appeared in an earlier post. In this version, an analog control signal on pin AN6 is used to vary the duty cycle of the waveforms produced. … Continue reading
Posted in PIC
Tagged buck-boost, converter, dsPIC, dsPIC30F4011, IGBT, OC1, OC2, OC3, OC4, output compare, PWM
28 Comments
Nasty 4-channel logic analyser using dsPIC30F4011
This post is about a quick and dirty 4-channel logic analyser that I hacked together to get a snapshot of four parallel binary signals from something I was building. I just want to quickly capture this information here for the … Continue reading
Posted in PIC
Tagged C, capture, digital signal, dsPIC, dsPIC30F4011, logic analyser, logic analyzer, sampling, XC16
2 Comments
IGBT control in a buck-boost DC-DC converter
Reader Jil Sutaria wrote in a with a query about controlling four IGBTs in a buck-boost DC-DC converter. Some of the main features of this application are: Two pairs of IGBTs need to be controlled. Each pair of IGBTs share … Continue reading
Posted in PIC
Tagged buck-boost, converter, dsPIC, dsPIC30F4011, duty cycle, IGBT, OC1, OC2, OC3, OC4, output compare, PWM
17 Comments
Polyphonic Keypad
Inspired by Paul Leamy’s dsPIC musical instrument, the microKey, I’ve just created a little polyphonic instrument of my own using a 12-button keypad that Richard Hayes gave me a couple of months ago. The code is set up to scan … Continue reading
Posted in Uncategorized
Tagged audio, dsPIC, dsPIC30F, dsPIC30F4011, frequency, keyboard, keypad, matrix, music, OC1R, OC1RS, octave, output compare, PDC1, pitch, polyphonic, PR2, PR3, PTPER, PWM
3 Comments
Working dsPIC30f4011 code to control servo angle from PC via serial
Here’s a working example of servo angle control from the PC, via serial communication to the dsPIC30F4011. The servo angle is set using a 5 character long command: The first character is ‘s’. The remaining four characters, which must all … Continue reading
Posted in Uncategorized
Tagged angle, dsPIC, dsPIC30F, dsPIC30F4011, PDC1, PICkit 2, PTPER, pulse width, PWM, serial, servo, UART
2 Comments
Short dsPIC30F4011 program to test output compare SFR values
I’ve been playing around with the output compare feature of the dsPIC30F4011 microcontroller for the last day or two and finding out some interesting things about it. There are two output compare channels (OC1 on pin 23, OC2 on pin … Continue reading
Posted in Uncategorized
Tagged dead time, deadtime, dsPIC, dsPIC30F4011, inverter, MOSFET, OC1R, OC1RS, OC2R, OC2RS, OCxR, OCxRS, output compare, PR2, push-pull, PWM, XC, XC16
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