EthercatDevice_DmpHID.uartTxQueueFull()

[EthercatDevice_DmpHID_Generic]

Description

Check if the software TX FIFO for the specified UART port of the specified EtherCAT slave device in this library is full.

Derived Class:

Syntax

int uartTxQueueFull(int dev);

Parameters

• [in] int dev
  The specified UART port of the EtherCAT slave device.
  • 0 for COM1.
  • 1 for COM2.

Return Value

Return whether the software TX FIFO in this library is full. If the FIFO on the COM port is full, the returned value is 1; if it is not, it is 0.

If the return value is smaller than 0, it means an error code.

Comment

This function must be called after a successful execution of EthercatMaster::begin(). This function is non-blocking and can be called within the Cyclic Callback.

Example

#include "Ethercat.h"

EthercatMaster master;
EthercatDevice_QECR11HU9S slave;

void setup() {
  Serial.begin(115200);

  master.begin();
  slave.attach(0, master);
  Serial.print("TX FIFO is Full: ");
  Serial.println(slave.uartTxQueueFull(0));
}

void loop() {
  // ...
}

Please see EthercatDevice_DmpHID_Generic Class for more QEC HID slave instructions and API usage.