TIM Capture BLOCK

This block supports PWM signal measurement using Timer peripheral on STM microcontrollers.

Contents

• Inputs
• Outputs
• Block parameters
• CubeMX settings

Inputs

None

Outputs

• New data CHx – new measurement flag (0 – no new measurement, 1 – new measurement)
• Duty CHx – measured PWM signal duty
• Period CHx [sec] – measured PWM signal period

Block parameters

• Timer – timer peripheral number
• Timer clock (MHz) – timer base clock
• Prescaler – timer base clock prescaler (timer clock is base/prescaler)
• Combined channels – timer combined channels configuration
• CHANNEL_x – timer channel x mode
• Sample time (sec) – timer combined channels configuration

CubeMX settings

• Timers->TIMx->Clock Source->Internal clock
• Timers->TIMx->NVIC Settings Tab->TIMx global interrupt/TIMx update interrupt
• Timers->TIMx->Channelx/Combined Channels->set as configured in block
• For combined channels, the channel inputs should be set: direct channel as ‘Rising Edge’ and indirect channel as ‘Falling Edge’