qtmr_timer#
Overview#
The QTMR project is a simple demonstration program of the SDK QTMR driver to use QTMR as a timer. The quad-timer module provides four timer channels with a variety of controls affecting both individual and multi-channel features. It sets up the QTMR hardware block to trigger an interrupt every 50 millisecond. When chaining the first channel and the second channel, Timer interrupt occur every 10 second. When the QTMR interrupt is triggered a message is printed on the UART terminal. In lots of RT10x devices, overflow flag and related interrupt cannot be generated successfully in upward count mode (ERRATA050194), the workaround is to use compare interrupt instead of overflow interrupt by setting compare value to 0xFFFF, the compare interrupt has the same timing effect as overflow interrupt in this way. So we add a new demo scene like that, when setting the compare value to 0xFFFF, Timer compare interrupt occurs every 65.5 seconds.
Supported Boards#
EVKB-IMXRT1050
Hardware requirements
Mini/micro USB cable
EVKB-IMXRT1050 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
MIMXRT1060-EVKB
Hardware requirements
Mini/micro USB cable
MIMXRT1060-EVKB board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Timer use-case, Over flow Test.****
Timer Overflow has occurred !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
MIMXRT1170-EVKB
Hardware requirements
Mini/micro USB cable
MIMXRT1170-EVKB board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
MIMXRT1060-EVKC
Hardware requirements
Mini/micro USB cable
MIMXRT1060-EVKC board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Timer use-case, Over flow Test.****
Timer Overflow has occurred !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
FRDM-IMXRT1152
Hardware requirements
Type-C USB cable
FRDM-IMXRT1152 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Timer use-case, about 65.5s Over flow Test.****
Timer Overflow has occurred !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
EVK-MIMXRT1015
Hardware requirements
Mini/micro USB cable
EVK-MIMXRT1015 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Timer use-case, Over flow Test.****
Timer Overflow has occurred !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Note:
To debug in qspiflash, following steps are needed:
1. Select the flash target and compile.
3. Set the SW8: 1 off 2 off 3 on 4 off, then power on the board and connect USB cable to J41.
4. Start debugging in IDE.
- Keil: Click "Download (F8)" to program the image to qspiflash first then clicking "Start/Stop Debug Session (Ctrl+F5)" to start debugging.
EVK-MIMXRT1020
Hardware requirements
Mini/micro USB cable
EVK-MIMXRT1020 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Timer use-case, Over flow Test.****
Timer Overflow has occurred !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Note:
To debug in qspiflash, following steps are needed:
1. Select the flash target and compile.
2. Set the SW8: 1 off 2 off 3 on 4 off, then power on the board and connect USB cable to J23.
3. Start debugging in IDE.
- Keil: Click "Download (F8)" to program the image to qspiflash first then clicking "Start/Stop Debug Session (Ctrl+F5)" to start debugging.
MIMXRT1024-EVK
Hardware requirements
Mini/micro USB cable
MIMXRT1024-EVK board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Timer use-case, Over flow Test.****
Timer Overflow has occurred !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Note:
To debug in qspiflash, following steps are needed:
1. Select the flash target and compile.
2. Set the SW8: 1 off 2 off 3 on 4 off, then power on the board and connect USB cable to J23.
3. Start debugging in IDE.
- Keil: Click "Download (F8)" to program the image to qspiflash first then clicking "Start/Stop Debug Session (Ctrl+F5)" to start debugging.
MIMXRT1040-EVK
Hardware requirements
Mini/micro USB cable
MIMXRT1040-EVK board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
Timer interrupt has occurred !
****Timer use-case, Over flow Test.****
Timer Overflow has occurred !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
EVK-MIMXRT1064
Hardware requirements
Mini/micro USB cable
EVK-MIMXRT1064 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
****Timer use-case, Over flow Test.****
Timer Overflow has occurred !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
MIMXRT1160-EVK
Hardware requirements
Mini/micro USB cable
MIMXRT1160-EVK board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
MIMXRT1180-EVK
Hardware requirements
Mini/micro USB cable
MIMXRT1180-EVK board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
FRDM-MCXL255
Hardware requirements
Type-C USB cable
FRDM-MCXL255 board
Personal Computer
Board settings
Make sure you have solder bridges SJ1 and SJ2 set to
2-1 for the main core (cm33)
2-3 for AON core (cm0+)
Prepare the Demo
Connect a USB Type-C cable between the host PC and the MCU-Link USB port (J16) on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
The following lines are printed to the serial terminal when the demo program is executed.
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
****Timer use-case, about 65.5s Over flow Test.****
Timer Overflow has occurred !
*********QUADTIMER EXAMPLE END.*********
FRDM-IMXRT1186
Hardware requirements
Type-C USB cable
FRDM-IMXRT1186 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Running the demo
When the demo runs successfully, the following message is displayed in the terminal:
*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
****Chain Timer use-case, 10 second tick.****
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
Timer interrupt has occured !
*********QUADTIMER EXAMPLE END.*********
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~