Step 2: Configure the Model for Arduino Hardware 1. Open the model. This model is configured to run in External mode.
To configure the model, click the Model Configuration Parameters button on the Simulink toolbar. In the Configurations Parameters dialog box, select Hardware Implementation. From the Hardware board list, select the type of Arduino board that you are using. From the Groups list under Target hardware resources, select Serial port properties. The Serial 1 baud rate parameter is set to 9600. In this example, the baud rate of Serial 1 baud rate is set because the TX1 and RX1 pins correspond to the Serial port 1 of the Arduino hardware.
If you are using any other serial port pins for communication, specify the baud rate of the corresponding serial port. Click OK to close the dialog box. Step 3: Configure the Blocks in the Simulink Model Double-click these blocks and verify the parameter values specified in the Block Parameters dialog box. Because the TX1 pin is connected to the RX1 pin, specify the Serial Port parameter of the block and the Port number parameter of the block as 1.
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The Sample time parameter specified in the Constant block and the Serial Receive block must be the same. Step 4: Run the Model in External Mode 1.
On the model toolbar, set Simulation mode to External. The default Simulation stop time is 10.0 seconds.
To run the model for an indefinite period, enter inf. The lower left corner of the model window displays status while Simulink prepares, downloads, and runs the model on the hardware.
At each time step, the TX1 pin transmits the data specified in the Constant block to the RX1 pin of your Arduino hardware. The RX1 pin receives the data and displays it on the Display Output block. Observe the output in the Display Output and Display Status blocks. Block Output Description - Display Data 5682.769 -4561 7825 Displays the data received on the RX1 pin of the Arduino hardware at the given time step. The value is the same as specified in the Constant block. Display Status 1 A value of 1 indicates that the Serial Receive block received data at the given time step.
Disconnect the wire from the RX1 pin. Both the Display blocks now output 0. A value of 0 in the Display Status block indicates that no data is received at the given time step. If you reconnect the wire again, you can see that the values at the Display blocks are restored.
To stop running the model on your hardware, click Stop on the model toolbar. Step 5: Run the Model in Normal Mode 1. Remove the wire connecting RX1 and TX1 pins because in this model, the data is sent to a serial terminal over the Serial port 0 (USB port). Open the model. This model is configured to run in Normal mode. In the Configurations Parameters dialog box, go to Hardware Implementation Target hardware resources Groups Serial port properties.
Set Serial 0 baud rate to the maximum baud rate supported by the serial port of your Arduino hardware. Double-click the Serial Transmit block and verify these parameter values.
Parameter Name Value Description - Serial Port 0 Send data over serial port 0. Send mode println Add a carriage return character ' r'(ASCII 13) and a newline character ' n'(ASCII 10) at the end of each byte of data. Label Counterval: The label for the data to be displayed on the serial terminal. On the model toolbar, set Simulation mode to Normal and click the Deploy to Hardware button. The lower left corner of the model window displays status while Simulink prepares, downloads, and runs the model on the hardware. Open the serial terminal in your computer ( for example, Arduino IDE serial monitor).
When logging in to the serial terminal.
Use Serial Communications with Arduino Hardware Arduino ® hardware has serial ports, also known as UARTs, that can communicate with other devices that have serial interfaces. Hardware You can use serial port 0 to communicate with other devices that have serial ports, or to communicate with a computer over the USB port. Each serial port supports one Serial Transmit and one Serial Receive block, one block per pin. You can run your model in the External mode for all the Arduino boards. To know pin mapping for different Arduino boards, see Pin Mapping Table in:.
Add the block to your model. Connect a data source to the block input on the Serial Transmit block. If the data type is not uint8, use a Data Type Conversion block to convert it to uint8. In the Arduino Serial Transmit block, select a Port number.
Click the Tools menu in the model, and select Run on Target Hardware Options. In the Configuration Parameters dialog that opens, on the Hardware Implementation Serial port properties, set the baud rate for the serial port you selected in the Arduino Serial Transmit block. Connect the appropriate digital transmit pin to the hardware that receives the data. Run the model, as described in.
If your model uses the Arduino USB port (Serial port 0) to transmit data to a device that is not your host computer, reconnect the USB cable to that device and press the RESET button. Receive Serial Data To receive data through a serial port or USB port on the Arduino hardware. Add the block to your model. On the Arduino Serial Receive block, connect the Data block output to a block that uses the data. Open the Arduino Serial Receive block and specify the Port number. Click the Tools menu in the model, and select Run on Target Hardware Options. In the Configuration Parameters dialog that opens, on the Hardware Implementation Serial port properties, set the baud rate for the serial port you selected in the Arduino Serial Receive block.
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Connect the digital receive pin to the hardware that transmits the data. Run the model, as described in. If your model uses the Arduino USB port (Serial port 0) to receive data from a device that is not your host computer, reconnect the USB cable to that device and press the RESET button. Related Topics.