Timer

Starts timer counter and provides current counter value

Since R2022b

• 

Libraries:
STM32 Microcontroller Blockset / STM32F1xx Based Boards
STM32 Microcontroller Blockset / STM32F2xx Based Boards
STM32 Microcontroller Blockset / STM32F3xx Based Boards
STM32 Microcontroller Blockset / STM32F4xx Based Boards
STM32 Microcontroller Blockset / STM32F7xx Based Boards
STM32 Microcontroller Blockset / STM32G0xx Based Boards
STM32 Microcontroller Blockset / STM32G4xx Based Boards
STM32 Microcontroller Blockset / STM32H5xx Based Boards
STM32 Microcontroller Blockset / STM32H7xx Based Boards
STM32 Microcontroller Blockset / STM32L4xx Based Boards
STM32 Microcontroller Blockset / STM32L5xx Based Boards
STM32 Microcontroller Blockset / STM32U5xx Based Boards
STM32 Microcontroller Blockset / STM32WBxx Based Boards

Description

Starts timer counter and provides the current counter value as output for the selected timer module. Also enables the interrupts selected in configuration parameters.

Counter is started during model initialization only when Start Timer during model initialization parameter is selected in the configuration parameters.

To start/stop the counter in runtime, deselect the Start Timer during model initialization parameter in the configuration parameters and select Enable input to enable/disable timer option in the block. An input of 1 to the corresponding input port will start the counter and 0 will stop the counter.

Examples

Signal Monitoring and Parameter Tuning of Generated PWM Output

Generate PWM signals on an STM32 processor-based board and tune parameters in real time using External mode.

• Open Model

Using Hardware Interrupt Block to Create an ISR on STMicroelectronics STM32 Processor Based Boards

Use a Hardware Interrupt block to create an interrupt service routine (ISR) in the generated code for STM32™ Microcontroller Blockset.

• Open Model

Get Started with STMicroelectronics STM32 Processor Based Boards

Run a Simulink model on STM32 processor.

• Open Model

Ports

Input

freq count — Frequency count of timer

scalar

The input at this port determines the frequency of the counter. This value is written directly to the auto reload register.

The frequency count for 32 bit timers is between 0 to 0xFFFFFFFF and for 16 bit timers is between 0 to 0xFFFF.

Dependencies

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

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

CEN — Port to enable timer counter

scalar

Use this port to enable or disable the timer 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 timer parameter.

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

MOE — Main output enable

scalar

This main output enable (MOE) bit is cleared asynchronously by the hardware as soon as the break input is active.

If input is 1, then the MOE bit is set as 1.

Dependencies

To enable this port, select the Enable main output enable (MOE) input parameter.

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

UG — 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.

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

CC#G — Capture compare generation event input

scalar

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

Dependencies

To enable this port, select the Enable capture compare # generation event input parameter.

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

TG — Trigger generation

scalar

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

Dependencies

To enable this port, select the Enable trigger generation event input parameter.

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

BG — Break generation

scalar

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

Dependencies

To enable this port, select the Enable break generation event input parameter.

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

B2G — Break generation 2 event

scalar

Use this port to generate break 2 generation event. When you specify a value of 1, the port generates an break 2 generation event and MOE status is cleared.

Dependencies

To enable this port, select the Enable break generation 2 event input parameter.

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

COMG — Capture compare control update generation

scalar

Use this port to generate capture compare control update generation event. When you specify a value of 1, the port generates capture compare control update generation.

Dependencies

To enable this port, select the Enable COM generation event input parameter.

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

Output

CNT — Current timer counter value

scalar

The counter port provides the current timer counter values as output for the selected timer module.

Data Types: uint32

Dir — Timer counter direction output

scalar

The block outputs the current direction of the timer counter as one of the following:

• 0 - Up counter

• 1 - Down counter

Dependencies

To enable this port, select the Enable timer counter direction output parameter.

Data Types: Boolean

MOE status — Status of main output enable bit

scalar

Status of the main output enable (MOE) bit.

Dependencies

To enable this port, select the Enable main output enable (MOE) status output parameter.

Data Types: Boolean

Parameters

Main

Timer module — Select timer module

TIM1 (default) | TIM2 | TIM3 | ...

Select the timer module. Number of timer module available will vary for different processors.

Note

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

Programmatic Use

Block Parameter: TimerModule

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

off (default) | on

By default, the Start timer during model initialization parameter is enabled in configuration parameter. This starts the Timer Counter during model initialization.

If you want to start the timer counter during run time, disable the Start timer during model initialization parameter in configuration parameter.

Note

If both Enable input to enable/disable timer parameter (block) and Start timer during model initialization (Configuration Parameter) parameters are not enabled, the timer counter will not be started.

Programmatic Use

Block Parameter: EnableCounterInput

Enable main output enable (MOE) input — Enable main output through input port

off (default) | on

Enable this parameter to set the main output enable (MOE) bit to recover from a break.

Dependencies

To enable this parameter, set the Timer module parameter to either TIM1, TIM8, TIM8, TIM16, TIM17, or TIM20.

Programmatic Use

Block Parameter: EnableMainOutputInput

Enable frequency input — Set the AutoReload register through input port

off (default) | on

Enable this parameter to set the AutoReload register (ARR) value of the timer during runtime.

Programmatic Use

Block Parameter: EnableFrequencyInput

Set the repetition counter after timer counter is enabled — Enable repetition counter through input

off (default) | on

For odd values in the repetition counter, the update event occurs on underflow or overflow depending on when you set the repetition counter.

By default, the block sets repetition counter before you enable the timer counter, so an update event occurs on underflow.

If you enable this parameter, the block sets repetition counter after you enable the time counter, so an update events occur on overflow.

Dependencies

To enable this parameter, set the Timer module parameter to either TIM1, TIM8, TIM8, TIM16, TIM17, or TIM20.

Programmatic Use

Block Parameter: SetRCAfterCE

Enable timer counter direction output — Select to Enable timer counter direction output port

off (default) | on

Enable this parameter to output the current direction of the timer counter.

Programmatic Use

Block Parameter: OutputDirection

Enable main output enable (MOE) status output — Select to enable MOE status port

off (default) | on

Enable this parameter to output the main output enable (MOE) bit status.

Dependencies

To enable this parameter, set the Timer module parameter to either TIM1, TIM8, TIM8, TIM16, TIM17, or TIM20.

Programmatic Use

Block Parameter: OutputMainOutputEnableStatus

Events

Enable update generation event input — Select to enable generate update event input port

off (default) | on

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

Programmatic Use

Block Parameter: EnableUpdateEvent

Enable capture compare # generation event input — Select to enable capture compare generation event input

off (default) | on

Enable this parameter to generate a capture compare event through the input port.

Dependencies

The number of Enable capture compare # generation event input parameters available depends on the module you select in the Timer module.

Programmatic Use

Block Parameter: EnableCaptureCompare1Event

EnableCaptureCompare2Event

EnableCaptureCompare3Event

EnableCaptureCompare4Event

Enable trigger generation event input — Select to enable trigger generation event input

off (default) | on

Enable this parameter to generate a trigger event through the input port.

Programmatic Use

Block Parameter: EnableTriggerEvent

Enable break generation event input — Select to enable break generation event input

off (default) | on

Enable this parameter to generate a break event through the input port.

Dependencies

To enable this parameter, set the Timer module parameter to any one of the module TIM1, TIM8, TIM8, TIM16, TIM17, or TIM20.

Programmatic Use

Block Parameter: EnableBreakEvent

Enable break generation 2 event input — Select to enable break generation 2 event input

off (default) | on

Enable this parameter to generate a break 2 event through the input port.

Dependencies

To enable this parameter, set the Timer module parameter to any one of the module TIM1, TIM8, TIM8, TIM16, TIM17, or TIM20.

Programmatic Use

Block Parameter: EnableBreakEvent2

Enable COM generation event input — Select to enable capture compare generation event input

off (default) | on

Enable this parameter to generate a capture compare event through the input port.

Dependencies

To enable this parameter, set the Timer module parameter to any one of the module TIM1, TIM8, TIM8, TIM16, TIM17, or TIM20.

Programmatic Use

Block Parameter: EnableCOMGenerationEvent

Sample time — Frequency at which enabled output ports are read

-1 (default) | non-negative real value

Specify how often (in seconds) the status of enabled output ports are read if no input ports are selected. Enter a value greater than zero. When you specify this parameter as -1, Simulink^® determines the best sample time for the block based on the block context within the model.

Dependencies

To enable the Sample time parameter, deselect all the input ports.

Programmatic Use

Block Parameter: SampleTime

Extended Capabilities

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

Version History

Introduced in R2022b