How do you stop Arduino Esplora's tone function interfering with RGB LED
I studied the 32U4 docs a bit and grabbed the Esplora specific logic from the Arduino libraries that they use to init the PWM resources at startup. The resulting timerFix() routine below can be used to restore things to the proper settings. void loop() { Esplora.writeRGB(127,0,0); delay(1000); Esplora.tone(311); delay(1000); timerFix();...
Sofware pwm as linux kernel module
c,linux,linux-kernel,embedded,pwm
Pulse-width modulation is very, very hard to do in software. In theory, all you have to do is to find a timer in your CPU which has a good enough resolution, attach an IRQ handler and kick it off. If you look at the clocks, it feels insane that you...
Using 4 16bit timers for 400hz PWM
c++,timer,arduino,pwm,motordriver
To answer one of your questions: So what would happen if I'll use same 16bit timer for both pwm and ppm reading? Would it work? Yes. When your pin change interrupt fires you may just read the current TCNT value to find out how long it has been since the...
STM32F030 PWM Setup Issues
In addition to setting the pin to use an alternate function, you must also set which alternate function to use. This is described in section 8.3.2 (pdf page 128) of the document you linked. These are the AFRL (for pins 0-7) and AFRH (for pins 8-15) registers on the port....
Why I am always getting Zero PWM output?
You are assigning wrong bits to wrong registers. Just to clarify: PWM it is NOT a analog output. It is quickly changed high or low output state. PWM value determines how long output will be in each state (high or low) withing timer period. If you want to make "analog"...
How to achive higher PWM frequency?
embedded,microcontroller,pic,microchip,pwm
For a start, you have the parameters to the functions reversed. Open() takes a char value less than 256, and Set() takes a 10-bit number. That said, you have chosen the largest value (255) which gives the lowest frequency. As the datasheet explains, the Open() function takes a value for...
ATtiny84 pwm led flicker
Just in case you haven't had a look yet, this is the relevant datasheet for your microcontroller: ATtiny84 Datasheet. Looking at the TCCR* timer configuration registers might reveal something.
implicit declaration of function even though i have included the file?
I see, that your header file, which contains declaration of init_phase_correct() is wrapped with include guard with some auto-generated name (INCFILE1_H_). Also, you did not specify, whether init_phase_correct() is declared inside PWM.h or maybe another file, that is included by PWM.h. Without more code, I cannot say for sure, but...
Beaglebone PWM limited to 100 HZ?
I actually found the solution just shortly after opening my question. I will post it here as I think this might actually cause more than just me to wonder :) The PWM frequency is of course not limited like that on a 1GHZ device, the kernel driver is just not...
Can't initialize PWM on dsPIC33F
c,microcontroller,pic,pwm,xc16
I believe you have set up the timer to count from 0 to 181 (P1TPER) and then reset and repeat. But you have set the duty cycle registers to 0x7FFF, which is greater than 181. So I believe the duty cycle value will never be less than the timer value...
How to make a block force a simulation step to occur at a given time?
As I mentioned in the comments, if you are using a fixed-step solver, then the step size is, well... fixed for the duration of the simulation. So you (or the user) needs to set it appropriately before starting the simulation to make sure all effects are captured. There is no...