Tft.drawFastVLine()

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Revision as of 03:48, 18 July 2016 by Fengfeng (talk) (Created page with "<pre style="color:green"> tft.drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color) </pre> *'''Effect''':<br> Draw a verticl line on the TFT screen.<br> *'''Parame...")
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tft.drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color)
  • Effect:

Draw a verticl line on the TFT screen.


  • Parameters:

x:x coordinate of the starting point

y:y coordinate of the starting point

w:length of the vertical line

color:color of the line


  • Example:
#define sclk 13
#define mosi 11
#define cs   5
#define dc   4
#define rst  -1  // you can also connect this to the Arduino reset

#include <Adafruit_GFX.h>    // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library
#include <SPI.h>

#if defined(__SAM3X8E__)
    #undef __FlashStringHelper::F(string_literal)
    #define F(string_literal) string_literal
#endif

Adafruit_ST7735 tft = Adafruit_ST7735(cs, dc, mosi, sclk, rst);

void setup(void) {
  tft.initR(INITR_BLACKTAB);   // initialize a ST7735S chip, black tab
  tft.fillScreen(ST7735_BLACK);
  tft.drawFastVLine(60, 20, 100, ST7735_RED);
}

void loop() {  }


[Return to TFT_ST7735 Grammar Handbook]