🗊 Презентация PWM (Pulse-Width Modulation)

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PWM (Pulse-Width Modulation), слайд №1 PWM (Pulse-Width Modulation), слайд №2 PWM (Pulse-Width Modulation), слайд №3 PWM (Pulse-Width Modulation), слайд №4 PWM (Pulse-Width Modulation), слайд №5
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Слайд 1


Task 5. PWM (Pulse-Width Modulation) AMM embedded course
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Task 5. PWM (Pulse-Width Modulation) AMM embedded course

Слайд 2


Links stm32_reference_manual.pdf - 17.3.10 PWM mode (Advanced-Control Timers)
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Links stm32_reference_manual.pdf - 17.3.10 PWM mode (Advanced-Control Timers)

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Timer with PWM mode Pulse Width Modulation mode allows you to generate a signal with a frequency determined by the value of the TIMx_ARR register and...
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Timer with PWM mode Pulse Width Modulation mode allows you to generate a signal with a frequency determined by the value of the TIMx_ARR register and a duty cycle determined by the value of the TIMx_CCRx register: In the PWM mode the timer controls the output of 1 or more output channels. When the counter value reaches 0, maximum or a compare value defined for each channel, the output value of the channel can be changed. Various configuration options define which events change the value and how it is changed.

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Task 5.1. Different LED brightness without PWM Use usual scheme of LED output Use delay cycle to contoll brightness (turn LED on – delay – turn LED...
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Task 5.1. Different LED brightness without PWM Use usual scheme of LED output Use delay cycle to contoll brightness (turn LED on – delay – turn LED off) Decrease delay by pressing the button

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Task 5.2. Different LED brightness with PWM Find appropriate pin for Alternate Function output – Timex X Channel Y (check STM32F4 datasheet) Init the...
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Task 5.2. Different LED brightness with PWM Find appropriate pin for Alternate Function output – Timex X Channel Y (check STM32F4 datasheet) Init the pin with AF mode (GPIO_PinAFConfig()) Init timer for this pin+channel with OCmode == TIM_OCMode_PWM1 (TIM_OC1Init(), TIM_OC1PreloadConfig(), TIM_ARRPreloadConfig(), TIM_Cmd()) Regulate the brightness via TIMx->CCRx value

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