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HW accelerated triangles

This commit is contained in:
KTOWN 2013-10-14 14:20:17 +02:00
parent 08c25fa361
commit 416680a9d9
2 changed files with 78 additions and 3 deletions
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75
Adafruit_RA8875.cpp
View File

@ -2,7 +2,7 @@
#include <SPI.h>
#include "Adafruit_RA8875.h"
Adafruit_RA8875::Adafruit_RA8875(uint8_t CS, uint8_t RST) : Adafruit_GFX(480, 272) {
Adafruit_RA8875::Adafruit_RA8875(uint8_t CS, uint8_t RST) : Adafruit_GFX(800, 480) {
_cs = CS;
_rst = RST;
}
@ -277,6 +277,16 @@ void Adafruit_RA8875::fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t col
circleHelper(x0, y0, r, color, true);
}
void Adafruit_RA8875::drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color)
{
triangleHelper(x0, y0, x1, y1, x2, y2, color, false);
}
void Adafruit_RA8875::fillTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color)
{
triangleHelper(x0, y0, x1, y1, x2, y2, color, true);
}
void Adafruit_RA8875::circleHelper(int16_t x0, int16_t y0, int16_t r, uint16_t color, bool filled)
{
/* Set X */
@ -379,6 +389,67 @@ void Adafruit_RA8875::rectHelper(int16_t x, int16_t y, int16_t w, int16_t h, uin
}
}
void Adafruit_RA8875::triangleHelper(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color, bool filled)
{
/* Set Point 0 */
writeCommand(0x91);
writeData(x0);
writeCommand(0x92);
writeData(x0 >> 8);
writeCommand(0x93);
writeData(y0);
writeCommand(0x94);
writeData(y0 >> 8);
/* Set Point 1 */
writeCommand(0x95);
writeData(x1);
writeCommand(0x96);
writeData(x1 >> 8);
writeCommand(0x97);
writeData(y1);
writeCommand(0x98);
writeData(y1 >> 8);
/* Set Point 2 */
writeCommand(0xA9);
writeData(x2);
writeCommand(0xAA);
writeData(x2 >> 8);
writeCommand(0xAB);
writeData(y2);
writeCommand(0xAC);
writeData(y2 >> 8);
/* Set Color */
writeCommand(0x63);
writeData((color & 0xf800) >> 11);
writeCommand(0x64);
writeData((color & 0x07e0) >> 5);
writeCommand(0x65);
writeData((color & 0x001f));
/* Draw! */
writeCommand(RA8875_DCR);
if (filled)
{
writeData(0xA1);
}
else
{
writeData(0x81);
}
/* Wait for the command to finish */
bool finished = false;
while (!finished)
{
uint8_t temp = readReg(RA8875_DCR);
if (!(temp & RA8875_DCR_LINESQUTRI_STATUS))
finished = true;
}
}
/************************* Mid Level ***********************************/
void Adafruit_RA8875::GPIOX(boolean on) {
@ -423,7 +494,7 @@ void Adafruit_RA8875::touchEnable(boolean on)
RA8875_TPCR0_ADCCLK_DIV4); // 10mhz max!
/* Set Auto Mode (Reg 0x71) */
writeReg(RA8875_TPCR1, RA8875_TPCR1_AUTO |
RA8875_TPCR1_VREFEXT |
// RA8875_TPCR1_VREFEXT |
RA8875_TPCR1_DEBOUNCE);
/* Enable TP INT */
writeReg(RA8875_INTC1, readReg(RA8875_INTC1) | RA8875_INTC1_TP);

6
Adafruit_RA8875.h
View File

@ -58,7 +58,9 @@ class Adafruit_RA8875 : public Adafruit_GFX {
/* HW accelerated wrapper functions (override Adafruit_GFX prototypes) */
void drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
void fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
void drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color);
void fillTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color);
/* Backlight */
void GPIOX(boolean on);
void PWM1config(boolean on, uint8_t clock);
@ -89,6 +91,7 @@ class Adafruit_RA8875 : public Adafruit_GFX {
/* GFX Helper Functions */
void circleHelper(int16_t x0, int16_t y0, int16_t r, uint16_t color, bool filled);
void rectHelper (int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color, bool filled);
void triangleHelper(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color, bool filled);
uint8_t _cs, _rst;
uint16_t _width, _height;
@ -200,6 +203,7 @@ class Adafruit_RA8875 : public Adafruit_GFX {
#define RA8875_DCR_FILL 0x20
#define RA8875_DCR_NOFILL 0x00
#define RA8875_DCR_DRAWLINE 0x00
#define RA8875_DCR_DRAWTRIANGLE 0x01
#define RA8875_DCR_DRAWSQUARE 0x10
#define RA8875_MWCR0 0x40