Higher Resolution Timer

Generate high resolution pulse width modulated waveforms

Since R2022b

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  • Higher Resolution Timer block

Libraries:
STM32 Microcontroller Blockset / STM32G4xx Based Boards
STM32 Microcontroller Blockset / STM32H7xx Based Boards
STM32 Microcontroller Blockset / STM32F3xx Based Boards

Description

Generate high resolution pulse width modulated waveforms on the enabled outputs using the high resolution timer module.

The inputs to the Higher Resolution Timer block control the frequency and duty cycle (via the compare inputs) of the square waveform for each output.

Note

Some HRTIM registers are preload enabled. If preload is enabled, ensure at least one of the update event is configured to enable copying of preload register to the active register.

Examples

Voltage Mode Control of DC-DC Buck Converter and Boost Converter Using STMicroelectronics STM32 Processor

Voltage Mode Control of DC-DC Buck Converter and Boost Converter Using STMicroelectronics STM32 Processor

Implement a DC-DC buck converter or Boost Converter control system using the B-G474E-DPOW1 Discovery kit for STM32™ Microcontroller Blockset.

Get Started with STMicroelectronics STM32 Processor Based Boards

Get Started with STMicroelectronics STM32 Processor Based Boards

Run a Simulink model on STM32 processor.

Ports

Input

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Use this port to enable input port counter compare.

Dependencies

To enable this port, select the Enable compare# (CMP#) input parameter under Counter Compare tab.

Data Types: Boolean | uint16 | uint32 | int8 | uint8 | int16 | int32 | uint64 | int64 | single | double

The input at this port determines the frequency of the counter. Depending on the STM32CubeMX configuration for preload, this value is either written directly to the active register or preload register.

The frequency count for 16 bit timers is between 0 to 0xFFFF.

Dependencies

To enable this port, select the Enable frequency input parameter under Main tab.

Data Types: Boolean | uint16 | uint32 | int8 | uint8 | int16 | int32 | uint64 | int64 | single | double

Use this port to enable input port counter. Set the port to one of these values.

  • 0 - Disable counter

  • 1 - Enable counter

Dependencies

To enable this port, select the Enable input to enable/disable counter parameter under Main tab.

Data Types: Boolean | uint16 | uint32 | int8 | uint8 | int16 | int32 | uint64 | int64 | single | double

Use this port to enable calibration input.

Dependencies

To enable this port, select the Enable delayed-locked loop(DLL) calibration input parameter under Main tab.

Data Types: Boolean | uint16 | uint32 | int8 | uint8 | int16 | int32 | uint64 | int64 | single | double

Use this port to generate an update event. When you specify a value of 1, the port generates an update event.

Dependencies

To enable this port, select the Enable update generation event input parameter under Event tab.

Data Types: Boolean | uint16 | uint32 | int8 | uint8 | int16 | int32 | uint64 | int64 | single | double

Use this port to software set trigger event input. When you specify a value of 1, the port generates an software set trigger event.

Dependencies

To enable this port, select the Enable channel# software set trigger(SST#) event input parameter under Event tab.

Data Types: Boolean | uint16 | uint32 | int8 | uint8 | int16 | int32 | uint64 | int64 | single | double

Use this port to software reset trigger event input. When you specify a value of 1, the port generates an software reset trigger event.

Dependencies

To enable this port, select the Enable channel# software reset trigger(SRT#) event input parameter under Event tab.

Data Types: Boolean | uint16 | uint32 | int8 | uint8 | int16 | int32 | uint64 | int64 | single | double

Output

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Output the status of the selected channel.

Dependencies

To enable this port, select the Enable channel# status output parameter under Main tab.

Data Types: Boolean | uint16 | uint32 | int8 | uint8 | int16 | int32 | uint64 | int64 | single | double

Parameters

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Main

Select the timer module.

Note

Ensure that Timer module is also configured in the STM32CubeMX project.

Programmatic Use

Block Parameter: TimerModule

Enable the channels on which you want the block to generate the PWM output. The input considers the duty cycle of the corresponding channels. Depending on the enabled inputs for counter compare and output set/reset STM32CubeMX configuration for match events, the high resolution pulse width modulated waveform can be generated on channel1 or channel2 or both.

Each Timer module can have one to six channels. Number of channels available vary based on the timer module selected. Enable the channel supported for the corresponding timer. By default, the block enables channel 1.

Note

Ensure the Timer module whose channels you want to enable are configured in the STM32CubeMX project

Programmatic Use

Block Parameter: EnableChannel1
EnableChannel2

Enable this parameter to set the frequency of the timer. All the channel outputs have the same frequency.

When you select the Enable frequency input parameter, the block configures an input port, PER.

Note

HRTIM block supports updating the period register via block input. There is a limit to the minimum frequency that can be generated for the given pre-scaler settings. For more information, see STM32H7xx TRM manual.

Programmatic Use

Block Parameter: EnableFrequencyInput

Enable or disable the counter through the input port. If you do not select this parameter, then the counter is enabled during model initialization.

When you select the Enable input to enable/disable counter parameter, the block configures an input port, CEN.

Programmatic Use

Block Parameter: EnableCounterStartStopInput

Select this parameter to output channel status. Status output 1 indicates overrun error.

When you select the Enable channel# status output parameter, the block configures an output port, ODS. The port outputs the status of channel output message.

Programmatic Use

Block Parameter: Channel1DisableStatus
Channel2DisableStatus

Select this parameter to output status of read data. Status output 1 indicates overrun error.

When you select the Enable delayed-locked loop (DLL) calibration input parameter, the block configures an input port, CAL.

Programmatic Use

Block Parameter: EnableDLLcalibration

Counter Compare

Select the Counts or Percentage units used by compare registers.

Programmatic Use

Block Parameter: CMPUnits

Enable this parameter to counter compare input port.

When you select the Enable compare# (CMP#) input parameter, the block configures an input port, CMP#.

Programmatic Use

Block Parameter: CMP1Input
CMP2Input
CMP3Input
CMP4Input

Events

Enable this parameter to generate an update event through input port.

When you select the Enable update generation event input parameter, the block configures an input port, SWU.

Programmatic Use

Block Parameter: EnableUpdateEvent

Enable this parameter to set channel software trigger event input.

When you select the Enable channel# software set trigger(SST#) event input parameter, the block configures an input port, SST#.

Programmatic Use

Block Parameter: Channel1activeState
Channel2activeState

Enable this parameter to reset channel software trigger event input.

When you select the Enable channel# software reset trigger(SRT#) event input parameter, the block configures an input port, SRT#.

Programmatic Use

Block Parameter: Channel1InactiveState
Channel2InactiveState

Extended Capabilities

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C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2022b

See Also

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