Difference between revisions of "STM32 bit bang PWM"
Jump to navigation
Jump to search
| Line 1: | Line 1: | ||
[[Category:STM32]][[Category:STM32 Development]][[Category:STM32CubeMX]][[Category:STM32CubeIde]][[Category:STM32 HAL]]{{metadesc|How to bitbang PWM}} | [[Category:STM32]][[Category:STM32 Development]][[Category:STM32CubeMX]][[Category:STM32CubeIde]][[Category:STM32 HAL]]{{metadesc|How to bitbang PWM}} | ||
On many of the cheaper [[STM32]] [[:Category:Development_Board|Development Boards]] there is a [[LED]] attached to PC13. This is perfectly ok if you want to switch it on or off, but PC13 is not attached to any of the timer channels, so it will not be possible to control the brightness using [[PWM]]. | On many of the cheaper [[STM32]] [[:Category:Development_Board|Development Boards]] there is a [[LED]] attached to PC13. This is perfectly ok if you want to switch it on or off, but PC13 is not attached to any of the timer channels, so it will not be possible to control the brightness using [[PWM]]. | ||
| + | |||
| + | Fortunately, while not ideal, it ''is'' possible. | ||
| + | |||
| + | == Miscellaneous Links == | ||
| + | |||
| + | * ]https://github.com/STM32World/firmware/tree/master/mcustm32f405_bitbang_pwm Stm32World STM32F405 Example] | ||
| + | * [https://github.com/lbthomsen/blackpill/tree/master/bitbang_pwm Blackpill STM32F411 Example] | ||
Revision as of 02:49, 6 May 2024
On many of the cheaper STM32 Development Boards there is a LED attached to PC13. This is perfectly ok if you want to switch it on or off, but PC13 is not attached to any of the timer channels, so it will not be possible to control the brightness using PWM.
Fortunately, while not ideal, it is possible.
Miscellaneous Links
- ]https://github.com/STM32World/firmware/tree/master/mcustm32f405_bitbang_pwm Stm32World STM32F405 Example]
- Blackpill STM32F411 Example