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Serial Nodes

These nodes could be used to interface with peripherals using the UART protocol and also for debugging purposes.

Config Nodes​

serial port​

Handles serial connection and its settings for serial communication.

Inputs

  • Port no. : Select the UART port
  • Speed (bits/s) : Specify the baud rate
  • TX pin : Specify the TX pin
  • RX pin : Specify the RX pin
  • Sclk Freq : Select the clock source
  • Max receive size : Specify the maximum rx buffer size
  • Word size : Select the word size/length
  • Parity : Select parity
  • Stop Bits : Select stop bits
  • Flow control : Select flow control mode

Proc Nodes​

serial write​

Sends text/buffer data over a serial(UART) connection.

Inputs

  • Serial port : Select the serial port config
  • Text : Specify text to write

display​

Prints text on the serial display window.

Inputs

  • Text : Specify text to display

serial read​

Waits for data to arrive on a serial(UART) connection. When all the data is received, it is passed over to the next nodes.

Inputs

  • Serial port : Select the serial port config
  • Mode : Select read mode
  • Data length : Specify the data length to be recieved
  • Line ending char : Specify the line ending character
  • Clip ending : Whether to clip pattern
  • Set timeout : Whether to set timeout
  • Timeout (s) : Specify timeout

Outputs

  • data : data received

serial set word length​

Set UART data bits.

Inputs

  • Config : Select the serial port config
  • Word size : Select the word size/length

serial get word length​

Get UART data bits.

Inputs

  • Config : Select the serial port config

Outputs

  • Word length : Word length

serial set stop bits​

Set UART stop bits.

Inputs

  • Config : Select the serial port config
  • Stop Bits : Select stop bits

serial get stop bits​

Get UART stop bits.

Inputs

  • Config : Select the serial port config

Outputs

  • Stop bits : Stop bits

serial set parity bits​

Set UART parity bits.

Inputs

  • Config : Select the serial port config
  • Parity : Select parity

serial get parity bits​

Get UART parity bits.

Inputs

  • Config : Select the serial port config

Outputs

  • Parity bits : Parity Bits

serial set baudrate​

Set UART baudrate.

Inputs

  • Config : Select the serial port config
  • Baud rate : Specify Baudrate

serial get baudrate​

Get UART baudrate.

Inputs

  • Config : Select the serial port config

Outputs

  • Baud rate : Baud rate

serial set line inverse​

Set UART line inverse.

Inputs

  • Config : Select the serial port config
  • Inverse mask : Provide an inverse mask

serial set sw flow control​

Set UART set sw flow control.

Inputs

  • Config : Select the serial port config
  • Enable : Select status
  • Rx threshold xon : Specify xon threshold for rx
  • Rx threshold xoff : Specify xoff threshold for rx

serial set hw flow control​

Set hw flow control.

Inputs

  • Config : Select the serial port config
  • Rx threshold : Specify rx threshold

serial get hw flow control​

Get hw flow control.

Inputs

  • Config : Select the serial port config

Outputs

  • Flow ctrl mode : Flow Control Mode

change serial intr mask status​

Set UART interrupt enable/disable.

Inputs

  • Config : Select the serial port config
  • Mask : Provide a bitmap to set/reset the interrupts
  • Status : Select status

serial clear intr mask​

Clear UART interrupt status.

Inputs

  • Config : Select the serial port config
  • Clear mask : Provide bitmap to clear the interrupts

change serial rx intr status​

Set UART rx interrupt enable/disable.

Inputs

  • Config : Select the serial port config
  • Status : Select status

change serial tx intr status​

Set UART tx interrupt enable/disable.

Inputs

  • Config : Select the serial port config
  • Status : Select status
  • Threshold : Specify the threshold value

serial set pin​

Assign signals of a UART peripheral to GPIO pins.

Inputs

  • Config : Select the serial port config
  • RX pin : Specify the RX pin
  • TX pin : Specify the TX pin
  • Rts Pin : Specify the RTS pin
  • Cts Pin : Specify the CTS pin

serial get pin​

Get UART pins.

Inputs

  • Config : Select the serial port config

Outputs

  • Rx pin : RX pin
  • Tx pin : TX pin
  • Rts io num : RTS IO num
  • Cts io num : CTS IO num

set dtr rts pin level​

Set dtr rts pin level.

Inputs

  • Config : Select the serial port config
  • Set rts : Set RTS
  • Rts level : Specify RTS value
  • Set dtr : Set DTR
  • Dtr level : Specify the DTR level

set tx idle number​

Set UART idle interval after tx FIFO is empty.

Inputs

  • Config : Select the serial port config
  • Idle num : Specify Idle interval for tx

serial wait for tramsmit done​

Wait until UART TX FIFO is empty.

Inputs

  • Config : Select the serial port config
  • Ticks to wait : Specify number of ticks to wait after transmission

serial write bytes​

Write the data and size.

Inputs

  • Config : Select the serial port config
  • Data Source : Specify the data source
  • Size : Specify size
  • Break length : Select type of line break

Outputs

  • Bytes written : Bytes Written

serial get buffered data length​

UART gets RX ring buffer cached data length.

Inputs

  • Config : Select the serial port config

Outputs

  • Buffered data length : Buffered data length

serial get tx buffer free size​

UART gets TX ring buffer free space size.

Inputs

  • Config : Select the serial port config

Outputs

  • Free size : Free Size

serial pattern pop get position​

Return the nearest detected pattern position in the buffer.

Inputs

  • Config : Select the serial port config
  • Select : Select type of operation

Outputs

  • Pattern pos : Pattern Position
  • Current pattern pos : Current Pattern Position

serial flush​

UART ring buffer flush. This will discard all data in the UART RX buffer.

Inputs

  • Config : Select the serial port config

serial set mode​

UART sets communication mode.

Inputs

  • Config : Select the serial port config
  • Mode : Select the mode

change pattern detect status​

UART pattern detect function.

Inputs

  • Config : Select the serial port config
  • Select : Select status
  • Pattern char : Provide character pattern
  • Char num : Specify num of characters in a pattern
  • Char tout : Specify characters for TOUT feature
  • Post idle : Specify post idle
  • Pre idle : Specify pre idle

pattern queue reset​

Allocate a new memory with the given length to save and record the detected pattern position in the rx buffer.

Inputs

  • Config : Select the serial port config
  • Queue length : Specify the queue length

set receiver timeout​

UART set a threshold timeout for the TOUT feature.

Inputs

  • Config : Select the serial port config
  • Tout threshold : Specify the TOUT threshold timeout

set wakeup threshold​

Set the number of RX pin signal edges for light sleep wakeup.

Inputs

  • Config : Select the serial port config
  • Wakeup threshold : Specify the wake up threshold

get wakeup threshold​

Get the number of RX pin signal edges for light sleep wakeup.

Inputs

  • Config : Select the serial port config

Outputs

  • Wakeup threshold : wakeup threshold

get clock source frequency​

Get the frequency of a clock source for the HP UART port.

Inputs

  • Config : Select the serial port config

Outputs

  • Freq in hz : Clock frequency

get collision flag​

The return collision detection flag for RS485 mode.

Inputs

  • Config : Select mode for receiving data

Outputs

  • Collision flag : Collision Detection Flag

wait transmit idle polling​

Wait until UART tx memory is empty and the last char sends ok (polling mode).

Inputs

  • Config : Select the serial port config

set transmit empty threshold​

Set uart threshold values for TX fifo empty.

Inputs

  • Config : Select the serial port config
  • Threshold : Specify the threshold value for transmitter

set receiver full threshold​

Set uart threshold value for RX fifo full.

Inputs

  • Config : Select the serial port config
  • Threshold : Specify the threshold value for receiver

set always receiver timeout​

Configure behavior of UART RX timeout interrupt.

Inputs

  • Config : Select the serial port config
  • Rx timeout : Enable the receiver timeout

Event Nodes​

on receive​

An Event Producer Node. Waits for data to arrive on a serial(UART) connection. When all data is received, the next nodes are triggered and the data is passed to them.

Inputs

  • Serial port : Select the serial port config
  • Mode : Select mode for receiving data
  • Length (Bytes) : Specify the length in bytes for received data
  • Line ending char : Specify the line ending character
  • Clip ending : Whether to clip ending

Outputs

  • data : Received Data Buffer