EthercatDevice_DmpLCD.lcdDrawFastVLine()

[EthercatDevice_DmpLCD_Generic]

Description

Draw a vertical line on the LCD display of the EtherCAT slave device with a given color.

Derived Class:

Syntax

int lcdDrawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color);

Parameters

• [in] int16_t x
  The X-axis position of the starting point of a vertical line to be drawn.
• [in] int16_t y
  The Y-axis position of the starting point of a vertical line to be drawn.
• [in] int16_t h
  The length of a vertical line to be drawn.
• [in] uint16_t color
  The color of the pixel to be drawn. It is a 16-bit unsigned integer that encodes the color information using the RGB565 format.

Return Value

Return an error code. If the returned value is zero, it indicates a successful execution of this function.

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;

void CyclicCallback() {
  slave.update();
}

void setup() {
  master.begin();
  slave.attach(0, master);
  slave.lcdInit(ECAT_LCD_ILI9341_1);
  master.attachCyclicCallback(CyclicCallback);
  master.start();

  slave.lcdDrawFastVLine(100, 100, 100, 0xFFE0);
}

void loop() {
  // ...
}

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