Serial Read

Read data from serial device

  • Library:
  • Simulink Support Package for Raspberry Pi Hardware / Communication

Description

Read data from a serial device connected to the Raspberry Pi™ hardware.

Refer to Asynchronous Serial Communication for information. To open the pin map of the Raspberry Pi board, click the View pin map button.

Ports

Output

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The data port through which the block reads the data from the serial device.

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

The output port that emits status of the data read. The following table lists the possible status values and their description.

Status ValueStatus Description
0SUCCESS
1RX_BUSY
2TX_BUSY
4PARITY_ERROR
8FRAME_ERROR
16BUS_ERROR
32DATA_NOT_AVAILABLE

Data Types: uint8

Parameters

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Select the specific board that you are using. Changing the board updates the pin choices that you get.

The port to which to you want to connect from the selected Raspberry Pi board to the serial device. For Pi 3 Model B board, the default serial port is /dev/ttyS0.

Select the rate at which the data is read over the serial line. The baudrate is measured as the number of bits read per second.

Select the parity added to the data transmitted. A parity bit is used to detect error in data transmission.

  • None – None value in this parameter means that no parity is used for error detection in the data transmission.

  • Even parity – The parity bit value is 1, if the number of bits with value as 1 is odd. The parity bit value is 0, if the number of bits with value as 1 is even.

  • Odd parity – The parity bit value is 1, if the number of bits with value as 1 is even. The parity bit value is 0, if the number of bits with value as 1 is odd.

Select the bit used as the stop bit in the data transmission. A stop bit marks the end of a unit of transmission.

Enter the data size that you want to read from the serial device for the selected data type.

Select the data type you want to transmit.

Specify how often this block reads the serial data. Enter a value greater than zero.

See Also

Introduced in R2017a