EthercatDevice_DmpLCD.touchCalibration()

[EthercatDevice_DmpLCD_Generic]

Description

Touchscreen calibration routine for the LCD module on the EtherCAT slave device. This function is a non-blocking function that contains the calibration routine state machine. It must be called continuously until it returns a non-zero value, indicating that the calibration routine is complete.

Derived Class:

Syntax

int touchCalibration(int flag = 0);

Parameters

• [in] int flag
  If the value of this parameter is -1, the current touchscreen calibration routine will be canceled. In this case, the function will return 1 to indicate cancellation. Other values for this parameter have no effect on the calibration routine.

Return Value

Return the current status of the touchscreen calibration routine.

• 0: Calibration in progress.
• 1: Calibration successful.
• -1: Calibration failed.

If the return value is less than 0, it indicates 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_QECR00UN01 slave;

int rc;

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

  master.begin();
  slave.attach(0, master);
  slave.lcdInit(ECAT_LCD_ILI9341_1);

  while ((rc = slave.touchCalibration()) == 0);
  if (rc > 0)
    Serial.println("Touch Screen calibration successful.");
  else
    Serial.println("Touch Screen calibration failed.");
}

void loop() {
  // ...
}

Please see EthercatDevice_DmpLCD_Generic Class for more QEC Stepper Drivers instructions and API usage.