pwm(3)

📦
version 1.75 · 4 versions
, in debian trixie, ubuntu noble, ubuntu questing

💖 pwm(3) — Pulse Width Modulation 💖

okay bestie, welcome to the pwm glow-up 💅 this is a page from the bcm2835 library, and it's all about making your GPIO pins pulse like they're at a concert 🎶 no cap.

✨ NAME ✨

pwm — Pulse Width Modulation 🌈

🦋 SYNOPSIS 🦋

Functions 📚

void bcm2835_pwm_set_clock (uint32_t divisor)
void bcm2835_pwm_set_mode (uint8_t channel, uint8_t markspace, uint8_t enabled)
void bcm2835_pwm_set_range (uint8_t channel, uint32_t range)
void bcm2835_pwm_set_data (uint8_t channel, uint32_t data)

👑 Detailed Description 👑

So here's the tea 🍓: this lets you control 2 independent PWM channels. A limited subset of GPIO pins can be connected to one of these 2 channels, and that's how you get PWM control of GPIO pins. It's giving remote control for your pins, periodt.

You have to set the desired pin into a particular Alt Fun to PWM output. See the PWM documentation on the Main Page. iykyk 💜

🎀 Function Documentation 🎀

void bcm2835_pwm_set_clock (uint32_t divisor) [extern]

Sets the PWM clock divisor, to control the basic PWM pulse widths. literally the speed dial for your pulses ✨

Parameters 🫶

  • divisor — Divides the basic 19.2MHz PWM clock. You can use one of the common values BCM2835_PWM_CLOCK_DIVIDER_* in bcm2835PWMClockDivider. iconic little menu of presets 💅

void bcm2835_pwm_set_data (uint8_t channel, uint32_t data) [extern]

Sets the PWM pulse ratio to emit to DATA/RANGE, where RANGE is set by bcm2835_pwm_set_range(). it's giving fraction energy 😭

Parameters 🫶

  • channel — The PWM channel. 0 or 1.
  • data — Controls the PWM output ratio as a fraction of the range. Can vary from 0 to RANGE.

void bcm2835_pwm_set_mode (uint8_t channel, uint8_t markspace, uint8_t enabled) [extern]

Sets the mode of the given PWM channel, allowing you to control the PWM mode and enable/disable that channel. main character energy fr fr 👑

Parameters 🫶

  • channel — The PWM channel. 0 or 1.
  • markspace — Set true if you want Mark-Space mode. 0 for Balanced mode.
  • enabled — Set true to enable this channel and produce PWM pulses. no pulses if you leave this off bestie, don't do that 🙈

void bcm2835_pwm_set_range (uint8_t channel, uint32_t range) [extern]

Sets the maximum range of the PWM output. The data value can vary between 0 and this range to control PWM output. it's the ceiling, the limit, the vibe check 🌸

Parameters 🫶

  • channel — The PWM channel. 0 or 1.
  • range — The maximum value permitted for DATA.

💜 Author 💜

Generated automatically by Doxygen for bcm2835 from the source code. not a human author, just a very efficient little robot 🧚✨

💖 that's the whole page bestie! go forth and modulate those pulses 💖

okay and for the cute sign-off: this whole thing is bcm2835, Version 1.75, and it's the pwm(3) page from the Library Functions Manual. slay 💅🌈⭐

📦 where this page comes from