Higher Resolution Timer

Generate high resolution pulse width modulated waveforms

Since R2022b

Add-On Required: This feature requires the Embedded Coder Support Package for STMicroelectronics STM32 Processors add-on.

• 

Libraries:
Embedded Coder Support Package for STMicroelectronics STM32 Processors / STM32G4xx Based Boards
Embedded Coder Support Package for STMicroelectronics STM32 Processors / STM32H7xx Based Boards
Embedded Coder Support Package for STMicroelectronics STM32 Processors / 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

Implement a DC-DC buck converter or Boost Converter control system using the B-G474E-DPOW1 Discovery kit for Embedded Coder® Support Package for STMicroelectronics® STM32 Processors.

• Open Model

Getting Started with STMicroelectronics STM32 Processor Based Boards

Use the Embedded Coder® Support Package for STMicroelectronics® STM32 Processors to run a Simulink® model on an STMicroelectronics STM32 Processor Based hardware board.

• Open Model

Ports

Input

CMP# — Counter compare port

scalar

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

PER — Frequency count of timer

scalar

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

CEN — Port to enable counter

scalar

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

CAL — Port to enable calibration input

scalar

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

SWU — Input to generate update event

scalar

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

SST# — Software set trigger

scalar

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

SRT# — Software reset trigger

scalar

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

ODS# — Status of channel output

scalar

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

Main

Timer module — Select timer module

TIMERA (default) | TIMERB | TIMERC | TIMERD | TIMERE | TIMERF | MAINTIMER

Select the timer module.

Note

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

Enable channel# — Select channel

Enable channel 1 (default) | Enable channel 2

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

Enable frequency input — Enable frequency through input port

off (default) | on

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.

Enable input to enable/disable counter — Enable counter through input port

off (default) | on

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.

Enable channel# status output — Enable to configure channel output status port

off (default) | on

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.

Enable delayed-locked loop (DLL) calibration input — Enable to configure output status port

off (default) | on

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.

Counter Compare

CMP unit — Units used by compare registers

Counts (default) | Percentage

Select the Counts or Percentage units used by compare registers.

Enable compare# (CMP#) input — Generate update event

off (default) | on

Enable this parameter to counter compare input port.

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

Events

Enable update generation event input — Generate update event

off (default) | on

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.

Enable channel# software set trigger(SST#) event input — Software set trigger

off (default) | on

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#.

Enable channel# software reset trigger(SRT#) event input — Software reset trigger

off (default) | on

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#.

Extended Capabilities

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

Version History

Introduced in R2022b