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Adafruit_RA8875/Adafruit_RA8875.cpp

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/**************************************************************************/
/*!
@file Adafruit_RA8875.cpp
@author Limor Friend/Ladyada, K.Townsend/KTOWN for Adafruit Industries
@license BSD license, all text above and below must be included in
any redistribution
Designed specifically to work with the Adafruit RA8875 Breakout
----> https://www.adafruit.com/products/
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
@section HISTORY
v1.0 - First release
*/
/**************************************************************************/
#include <SPI.h>
#include "Adafruit_RA8875.h"
/**************************************************************************/
/*!
Constructor for a new RA8875 instance
@args CS[in] Location of the SPI chip select pin
@args RST[in] Location of the reset pin
*/
/**************************************************************************/
Adafruit_RA8875::Adafruit_RA8875(uint8_t CS, uint8_t RST) : Adafruit_GFX(800, 480) {
_cs = CS;
_rst = RST;
}
/**************************************************************************/
/*!
Initialises the LCD driver and any HW required by the display
@args s[in] The display size, which can be either:
'RA8875_480x272' (4.3" displays) r
'RA8875_800x480' (5" and 7" displays)
*/
/**************************************************************************/
boolean Adafruit_RA8875::begin(enum RA8875sizes s) {
_size = s;
if (_size == RA8875_480x272) {
_width = 480;
_height = 272;
}
if (_size == RA8875_800x480) {
_width = 800;
_height = 480;
}
pinMode(_cs, OUTPUT);
digitalWrite(_cs, HIGH);
pinMode(_rst, OUTPUT);
digitalWrite(_rst, LOW);
digitalWrite(_rst, LOW);
delay(100);
digitalWrite(_rst, HIGH);
delay(100);
SPI.begin();
SPI.setClockDivider(SPI_CLOCK_DIV128);
SPI.setDataMode(SPI_MODE0);
if (readReg(0) != 0x75) {
return false;
}
initialize();
SPI.setClockDivider(SPI_CLOCK_DIV4);
return true;
}
/************************* Initialization *********************************/
/**************************************************************************/
/*!
Performs a SW-based reset of the RA8875
*/
/**************************************************************************/
void Adafruit_RA8875::softReset(void) {
writeCommand(RA8875_PWRR);
writeData(RA8875_PWRR_SOFTRESET);
writeData(RA8875_PWRR_NORMAL);
delay(1);
}
/**************************************************************************/
/*!
Initialise the PLL
*/
/**************************************************************************/
void Adafruit_RA8875::PLLinit(void) {
if (_size == RA8875_480x272) {
writeReg(RA8875_PLLC1, RA8875_PLLC1_PLLDIV1 + 10);
delay(1);
writeReg(RA8875_PLLC2, RA8875_PLLC2_DIV4);
delay(1);
}
if (_size == RA8875_800x480) {
writeReg(RA8875_PLLC1, RA8875_PLLC1_PLLDIV1 + 10);
delay(1);
writeReg(RA8875_PLLC2, RA8875_PLLC2_DIV4);
delay(1);
}
}
/**************************************************************************/
/*!
Initialises the driver IC (clock setup, etc.)
*/
/**************************************************************************/
void Adafruit_RA8875::initialize(void) {
PLLinit();
writeReg(RA8875_SYSR, RA8875_SYSR_16BPP | RA8875_SYSR_MCU8);
/* Timing values */
uint8_t pixclk;
uint8_t hsync_start;
uint8_t hsync_pw;
uint8_t hsync_finetune;
uint8_t hsync_nondisp;
uint8_t vsync_pw;
uint16_t vsync_nondisp;
uint16_t vsync_start;
/* Set the correct values for the display being used */
if (_size == RA8875_480x272)
{
pixclk = RA8875_PCSR_PDATL | RA8875_PCSR_8CLK;
hsync_nondisp = 10;
hsync_start = 8;
hsync_pw = 48;
hsync_finetune = 0;
vsync_nondisp = 3;
vsync_start = 8;
vsync_pw = 10;
}
else if (_size == RA8875_800x480)
{
pixclk = RA8875_PCSR_PDATL | RA8875_PCSR_2CLK;
hsync_nondisp = 26;
hsync_start = 32;
hsync_pw = 96;
hsync_finetune = 0;
vsync_nondisp = 32;
vsync_start = 23;
vsync_pw = 2;
}
writeReg(RA8875_PCSR, pixclk);
delay(1);
/* Horizontal settings registers */
writeReg(RA8875_HDWR, (_width / 8) - 1); // H width: (HDWR + 1) * 8 = 480
writeReg(RA8875_HNDFTR, RA8875_HNDFTR_DE_HIGH + hsync_finetune);
writeReg(RA8875_HNDR, (hsync_nondisp - hsync_finetune - 2)/8); // H non-display: HNDR * 8 + HNDFTR + 2 = 10
writeReg(RA8875_HSTR, hsync_start/8 - 1); // Hsync start: (HSTR + 1)*8
writeReg(RA8875_HPWR, RA8875_HPWR_LOW + (hsync_pw/8 - 1)); // HSync pulse width = (HPWR+1) * 8
/* Vertical settings registers */
writeReg(RA8875_VDHR0, (uint16_t)(_height - 1) & 0xFF);
writeReg(RA8875_VDHR1, (uint16_t)(_height - 1) >> 8);
writeReg(RA8875_VNDR0, vsync_nondisp-1); // V non-display period = VNDR + 1
writeReg(RA8875_VNDR1, vsync_nondisp >> 8);
writeReg(RA8875_VSTR0, vsync_start-1); // Vsync start position = VSTR + 1
writeReg(RA8875_VSTR1, vsync_start >> 8);
writeReg(RA8875_VPWR, RA8875_VPWR_LOW + vsync_pw - 1); // Vsync pulse width = VPWR + 1
/* Set active window X */
writeReg(RA8875_HSAW0, 0); // horizontal start point
writeReg(RA8875_HSAW1, 0);
writeReg(RA8875_HEAW0, (uint16_t)(_width - 1) & 0xFF); // horizontal end point
writeReg(RA8875_HEAW1, (uint16_t)(_width - 1) >> 8);
/* Set active window Y */
writeReg(RA8875_VSAW0, 0); // vertical start point
writeReg(RA8875_VSAW1, 0);
writeReg(RA8875_VEAW0, (uint16_t)(_height - 1) & 0xFF); // horizontal end point
writeReg(RA8875_VEAW1, (uint16_t)(_height - 1) >> 8);
/* ToDo: Setup touch panel? */
/* Clear the entire window */
writeReg(RA8875_MCLR, RA8875_MCLR_START | RA8875_MCLR_FULL);
delay(500);
}
/**************************************************************************/
/*!
Returns the display width in pixels
@returns The 1-based display width in pixels
*/
/**************************************************************************/
uint16_t Adafruit_RA8875::width(void) { return _width; }
/**************************************************************************/
/*!
Returns the display height in pixels
@returns The 1-based display height in pixels
*/
/**************************************************************************/
uint16_t Adafruit_RA8875::height(void) { return _height; }
/************************* Graphics ***********************************/
/**************************************************************************/
/*!
HW accelerated function to push a chunk of raw pixel data
@args num[in] The number of pixels to push
@args p[in] The pixel color to use
*/
/**************************************************************************/
void Adafruit_RA8875::pushPixels(uint32_t num, uint16_t p) {
digitalWrite(_cs, LOW);
SPI.transfer(RA8875_DATAWRITE);
while (num--) {
SPI.transfer(p >> 8);
SPI.transfer(p);
}
digitalWrite(_cs, HIGH);
}
/**************************************************************************/
/*!
Sets the display in graphics mode (as opposes to tet mode)
*/
/**************************************************************************/
void Adafruit_RA8875::graphicsMode(void) {
writeCommand(RA8875_MWCR0);
uint8_t temp = readData();
temp &= ~RA8875_MWCR0_TXTMODE; // bit #7
writeData(temp);
}
/**************************************************************************/
/*!
Sets the current X/Y position on the display before drawing
@args x[in] The 0-based x location
@args y[in] The 0-base y location
*/
/**************************************************************************/
void Adafruit_RA8875::setXY(uint16_t x, uint16_t y) {
writeReg(RA8875_CURH0, x);
writeReg(RA8875_CURH1, x >> 8);
writeReg(RA8875_CURV0, y);
writeReg(RA8875_CURV1, y >> 8);
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::fillRect(void) {
writeCommand(RA8875_DCR);
writeData(RA8875_DCR_LINESQUTRI_STOP | RA8875_DCR_DRAWSQUARE);
writeData(RA8875_DCR_LINESQUTRI_START | RA8875_DCR_FILL | RA8875_DCR_DRAWSQUARE);
}
/**************************************************************************/
/*!
Draws a single pixel at the specified location
@args x[in] The 0-based x location
@args y[in] The 0-base y location
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::drawPixel(int16_t x, int16_t y, uint16_t color)
{
writeReg(RA8875_CURH0, x);
writeReg(RA8875_CURH1, x >> 8);
writeReg(RA8875_CURV0, y);
writeReg(RA8875_CURV1, y >> 8);
writeCommand(RA8875_MRWC);
digitalWrite(_cs, LOW);
SPI.transfer(RA8875_DATAWRITE);
SPI.transfer(color >> 8);
SPI.transfer(color);
digitalWrite(_cs, HIGH);
}
/**************************************************************************/
/*!
Draws a HW accelerated line on the display
@args x0[in] The 0-based starting x location
@args y0[in] The 0-base starting y location
@args x1[in] The 0-based ending x location
@args y1[in] The 0-base ending y location
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color)
{
/* Set X */
writeCommand(0x91);
writeData(x0);
writeCommand(0x92);
writeData(x0 >> 8);
/* Set Y */
writeCommand(0x93);
writeData(y0);
writeCommand(0x94);
writeData(y0 >> 8);
/* Set X1 */
writeCommand(0x95);
writeData(x1);
writeCommand(0x96);
writeData((x1) >> 8);
/* Set Y1 */
writeCommand(0x97);
writeData(y1);
writeCommand(0x98);
writeData((y1) >> 8);
/* Set Color */
writeCommand(0x63);
writeData((color & 0xf800) >> 11);
writeCommand(0x64);
writeData((color & 0x07e0) >> 5);
writeCommand(0x65);
writeData((color & 0x001f));
/* Draw! */
writeCommand(RA8875_DCR);
writeData(0x80);
/* 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;
}
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color)
{
drawLine(x, y, x, y+h, color);
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color)
{
drawLine(x, y, x+w, y, color);
}
/**************************************************************************/
/*!
Draws a HW accelerated rectangle on the display
@args x[in] The 0-based x location of the top-right corner
@args y[in] The 0-based y location of the top-right corner
@args w[in] The rectangle width
@args h[in] The rectangle height
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)
{
rectHelper(x, y, x+w, y+h, color, false);
}
/**************************************************************************/
/*!
Draws a HW accelerated filled rectangle on the display
@args x[in] The 0-based x location of the top-right corner
@args y[in] The 0-based y location of the top-right corner
@args w[in] The rectangle width
@args h[in] The rectangle height
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)
{
rectHelper(x, y, x+w, y+h, color, true);
}
/**************************************************************************/
/*!
Fills the screen with the spefied RGB565 color
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::fillScreen(uint16_t color)
{
rectHelper(0, 0, _width-1, _height-1, color, true);
}
/**************************************************************************/
/*!
Draws a HW accelerated circle on the display
@args x[in] The 0-based x location of the center of the circle
@args y[in] The 0-based y location of the center of the circle
@args w[in] The circle's radius
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color)
{
circleHelper(x0, y0, r, color, false);
}
/**************************************************************************/
/*!
Draws a HW accelerated filled circle on the display
@args x[in] The 0-based x location of the center of the circle
@args y[in] The 0-based y location of the center of the circle
@args w[in] The circle's radius
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color)
{
circleHelper(x0, y0, r, color, true);
}
/**************************************************************************/
/*!
Draws a HW accelerated triangle on the display
@args x0[in] The 0-based x location of point 0 on the triangle
@args y0[in] The 0-based y location of point 0 on the triangle
@args x1[in] The 0-based x location of point 1 on the triangle
@args y1[in] The 0-based y location of point 1 on the triangle
@args x2[in] The 0-based x location of point 2 on the triangle
@args y2[in] The 0-based y location of point 2 on the triangle
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
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);
}
/**************************************************************************/
/*!
Draws a HW accelerated filled triangle on the display
@args x0[in] The 0-based x location of point 0 on the triangle
@args y0[in] The 0-based y location of point 0 on the triangle
@args x1[in] The 0-based x location of point 1 on the triangle
@args y1[in] The 0-based y location of point 1 on the triangle
@args x2[in] The 0-based x location of point 2 on the triangle
@args y2[in] The 0-based y location of point 2 on the triangle
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
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);
}
/**************************************************************************/
/*!
Draws a HW accelerated ellipse on the display
@args xCenter[in] The 0-based x location of the ellipse's center
@args yCenter[in] The 0-based y location of the ellipse's center
@args longAxis[in] The size in pixels of the ellipse's long axis
@args shortAxis[in] The size in pixels of the ellipse's short axis
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::drawEllipse(int16_t xCenter, int16_t yCenter, int16_t longAxis, int16_t shortAxis, uint16_t color)
{
ellipseHelper(xCenter, yCenter, longAxis, shortAxis, color, false);
}
/**************************************************************************/
/*!
Draws a HW accelerated filled ellipse on the display
@args xCenter[in] The 0-based x location of the ellipse's center
@args yCenter[in] The 0-based y location of the ellipse's center
@args longAxis[in] The size in pixels of the ellipse's long axis
@args shortAxis[in] The size in pixels of the ellipse's short axis
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::fillEllipse(int16_t xCenter, int16_t yCenter, int16_t longAxis, int16_t shortAxis, uint16_t color)
{
ellipseHelper(xCenter, yCenter, longAxis, shortAxis, color, true);
}
/**************************************************************************/
/*!
Draws a HW accelerated curve on the display
@args xCenter[in] The 0-based x location of the ellipse's center
@args yCenter[in] The 0-based y location of the ellipse's center
@args longAxis[in] The size in pixels of the ellipse's long axis
@args shortAxis[in] The size in pixels of the ellipse's short axis
@args curvePart[in] The corner to draw, where in clock-wise motion:
0 = 180-270<37>
1 = 270-0<>
2 = 0-90<39>
3 = 90-180<38>
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::drawCurve(int16_t xCenter, int16_t yCenter, int16_t longAxis, int16_t shortAxis, uint8_t curvePart, uint16_t color)
{
curveHelper(xCenter, yCenter, longAxis, shortAxis, curvePart, color, false);
}
/**************************************************************************/
/*!
Draws a HW accelerated filled curve on the display
@args xCenter[in] The 0-based x location of the ellipse's center
@args yCenter[in] The 0-based y location of the ellipse's center
@args longAxis[in] The size in pixels of the ellipse's long axis
@args shortAxis[in] The size in pixels of the ellipse's short axis
@args curvePart[in] The corner to draw, where in clock-wise motion:
0 = 180-270<37>
1 = 270-0<>
2 = 0-90<39>
3 = 90-180<38>
@args color[in] The RGB565 color to use when drawing the pixel
*/
/**************************************************************************/
void Adafruit_RA8875::fillCurve(int16_t xCenter, int16_t yCenter, int16_t longAxis, int16_t shortAxis, uint8_t curvePart, uint16_t color)
{
curveHelper(xCenter, yCenter, longAxis, shortAxis, curvePart, color, true);
}
/**************************************************************************/
/*!
Helper function for higher level circle drawing code
*/
/**************************************************************************/
void Adafruit_RA8875::circleHelper(int16_t x0, int16_t y0, int16_t r, uint16_t color, bool filled)
{
/* Set X */
writeCommand(0x99);
writeData(x0);
writeCommand(0x9a);
writeData(x0 >> 8);
/* Set Y */
writeCommand(0x9b);
writeData(y0);
writeCommand(0x9c);
writeData(y0 >> 8);
/* Set Radius */
writeCommand(0x9d);
writeData(r);
/* 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(RA8875_DCR_CIRCLE_START | RA8875_DCR_FILL);
}
else
{
writeData(RA8875_DCR_CIRCLE_START | RA8875_DCR_NOFILL);
}
/* Wait for the command to finish */
bool finished = false;
while (!finished)
{
uint8_t temp = readReg(RA8875_DCR);
if (!(temp & RA8875_DCR_CIRCLE_STATUS))
finished = true;
}
}
/**************************************************************************/
/*!
Helper function for higher level rectangle drawing code
*/
/**************************************************************************/
void Adafruit_RA8875::rectHelper(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color, bool filled)
{
/* Set X */
writeCommand(0x91);
writeData(x);
writeCommand(0x92);
writeData(x >> 8);
/* Set Y */
writeCommand(0x93);
writeData(y);
writeCommand(0x94);
writeData(y >> 8);
/* Set X1 */
writeCommand(0x95);
writeData(w);
writeCommand(0x96);
writeData((w) >> 8);
/* Set Y1 */
writeCommand(0x97);
writeData(h);
writeCommand(0x98);
writeData((h) >> 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(0xB0);
}
else
{
writeData(0x90);
}
/* 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;
}
}
/**************************************************************************/
/*!
Helper function for higher level triangle drawing code
*/
/**************************************************************************/
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;
}
}
/**************************************************************************/
/*!
Helper function for higher level ellipse drawing code
*/
/**************************************************************************/
void Adafruit_RA8875::ellipseHelper(int16_t xCenter, int16_t yCenter, int16_t longAxis, int16_t shortAxis, uint16_t color, bool filled)
{
/* Set Center Point */
writeCommand(0xA5);
writeData(xCenter);
writeCommand(0xA6);
writeData(xCenter >> 8);
writeCommand(0xA7);
writeData(yCenter);
writeCommand(0xA8);
writeData(yCenter >> 8);
/* Set Long and Short Axis */
writeCommand(0xA1);
writeData(longAxis);
writeCommand(0xA2);
writeData(longAxis >> 8);
writeCommand(0xA3);
writeData(shortAxis);
writeCommand(0xA4);
writeData(shortAxis >> 8);
/* Set Color */
writeCommand(0x63);
writeData((color & 0xf800) >> 11);
writeCommand(0x64);
writeData((color & 0x07e0) >> 5);
writeCommand(0x65);
writeData((color & 0x001f));
/* Draw! */
writeCommand(0xA0);
if (filled)
{
writeData(0xC0);
}
else
{
writeData(0x80);
}
/* Wait for the command to finish */
bool finished = false;
while (!finished)
{
uint8_t temp = readReg(0xA0);
if (!(temp & 0x80))
finished = true;
}
}
/**************************************************************************/
/*!
Helper function for higher level curve drawing code
*/
/**************************************************************************/
void Adafruit_RA8875::curveHelper(int16_t xCenter, int16_t yCenter, int16_t longAxis, int16_t shortAxis, uint8_t curvePart, uint16_t color, bool filled)
{
/* Set Center Point */
writeCommand(0xA5);
writeData(xCenter);
writeCommand(0xA6);
writeData(xCenter >> 8);
writeCommand(0xA7);
writeData(yCenter);
writeCommand(0xA8);
writeData(yCenter >> 8);
/* Set Long and Short Axis */
writeCommand(0xA1);
writeData(longAxis);
writeCommand(0xA2);
writeData(longAxis >> 8);
writeCommand(0xA3);
writeData(shortAxis);
writeCommand(0xA4);
writeData(shortAxis >> 8);
/* Set Color */
writeCommand(0x63);
writeData((color & 0xf800) >> 11);
writeCommand(0x64);
writeData((color & 0x07e0) >> 5);
writeCommand(0x65);
writeData((color & 0x001f));
/* Draw! */
writeCommand(0xA0);
if (filled)
{
writeData(0xD0 | (curvePart & 0x03));
}
else
{
writeData(0x90 | (curvePart & 0x03));
}
/* Wait for the command to finish */
bool finished = false;
while (!finished)
{
uint8_t temp = readReg(0xA0);
if (!(temp & 0x80))
finished = true;
}
}
/************************* Mid Level ***********************************/
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::GPIOX(boolean on) {
if (on)
writeReg(RA8875_GPIOX, 1);
else
writeReg(RA8875_GPIOX, 0);
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::PWM1out(uint8_t p) {
writeReg(RA8875_P1DCR, p);
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::PWM2out(uint8_t p) {
writeReg(RA8875_P2DCR, p);
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::PWM1config(boolean on, uint8_t clock) {
if (on) {
writeReg(RA8875_P1CR, RA8875_P1CR_ENABLE | (clock & 0xF));
} else {
writeReg(RA8875_P1CR, RA8875_P1CR_DISABLE | (clock & 0xF));
}
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::PWM2config(boolean on, uint8_t clock) {
if (on) {
writeReg(RA8875_P2CR, RA8875_P2CR_ENABLE | (clock & 0xF));
} else {
writeReg(RA8875_P2CR, RA8875_P2CR_DISABLE | (clock & 0xF));
}
}
/**************************************************************************/
/*!
Enables or disables the on-chip touch screen controller
*/
/**************************************************************************/
void Adafruit_RA8875::touchEnable(boolean on)
{
if (on)
{
/* Enable Touch Panel (Reg 0x70) */
writeReg(RA8875_TPCR0, RA8875_TPCR0_ENABLE |
RA8875_TPCR0_WAIT_4096CLK |
RA8875_TPCR0_WAKEDISABLE |
RA8875_TPCR0_ADCCLK_DIV4); // 10mhz max!
/* Set Auto Mode (Reg 0x71) */
writeReg(RA8875_TPCR1, RA8875_TPCR1_AUTO |
// RA8875_TPCR1_VREFEXT |
RA8875_TPCR1_DEBOUNCE);
/* Enable TP INT */
writeReg(RA8875_INTC1, readReg(RA8875_INTC1) | RA8875_INTC1_TP);
}
else
{
/* Disable TP INT */
writeReg(RA8875_INTC1, readReg(RA8875_INTC1) & ~RA8875_INTC1_TP);
/* Disable Touch Panel (Reg 0x70) */
writeReg(RA8875_TPCR0, RA8875_TPCR0_DISABLE);
}
}
/**************************************************************************/
/*!
Checks if a touch event has occured
@returns True is a touch event has occured (reading it via
touchRead() will clear the interrupt in memory)
*/
/**************************************************************************/
boolean Adafruit_RA8875::touched(void)
{
if (readReg(RA8875_INTC2) & RA8875_INTC2_TP) return true;
return false;
}
/**************************************************************************/
/*!
Reads the last touch event
@args x[out] Pointer to the uint16_t field to assign the raw X value
@args y[out] Pointer to the uint16_t field to assign the raw Y value
@note Calling this function will clear the touch panel interrupt on
the RA8875, resetting the flag used by the 'touched' function
*/
/**************************************************************************/
boolean Adafruit_RA8875::touchRead(uint16_t *x, uint16_t *y)
{
uint16_t tx, ty;
uint8_t temp;
tx = readReg(RA8875_TPXH);
ty = readReg(RA8875_TPYH);
temp = readReg(RA8875_TPXYL);
tx <<= 2;
ty <<= 2;
tx |= temp & 0x03; // get the bottom x bits
ty |= (temp >> 2) & 0x03; // get the bottom y bits
*x = tx;
*y = ty;
/* Clear TP INT Status */
writeReg(RA8875_INTC2, RA8875_INTC2_TP);
return true;
}
/**************************************************************************/
/*!
Turns the display on or off
*/
/**************************************************************************/
void Adafruit_RA8875::displayOn(boolean on)
{
if (on)
writeReg(RA8875_PWRR, RA8875_PWRR_NORMAL | RA8875_PWRR_DISPON);
else
writeReg(RA8875_PWRR, RA8875_PWRR_NORMAL | RA8875_PWRR_DISPOFF);
}
/**************************************************************************/
/*!
Puts the display in sleep mode, or disables sleep mode if enabled
*/
/**************************************************************************/
void Adafruit_RA8875::sleep(boolean sleep)
{
if (sleep)
writeReg(RA8875_PWRR, RA8875_PWRR_DISPOFF | RA8875_PWRR_SLEEP);
else
writeReg(RA8875_PWRR, RA8875_PWRR_DISPOFF);
}
/************************* Low Level ***********************************/
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::writeReg(uint8_t reg, uint8_t val)
{
writeCommand(reg);
writeData(val);
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
uint8_t Adafruit_RA8875::readReg(uint8_t reg)
{
writeCommand(reg);
return readData();
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::writeData(uint8_t d)
{
digitalWrite(_cs, LOW);
SPI.transfer(RA8875_DATAWRITE);
SPI.transfer(d);
digitalWrite(_cs, HIGH);
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
uint8_t Adafruit_RA8875::readData(void)
{
digitalWrite(_cs, LOW);
SPI.transfer(RA8875_DATAREAD);
uint8_t x = SPI.transfer(0x0);
digitalWrite(_cs, HIGH);
return x;
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
void Adafruit_RA8875::writeCommand(uint8_t d)
{
digitalWrite(_cs, LOW);
SPI.transfer(RA8875_CMDWRITE);
SPI.transfer(d);
digitalWrite(_cs, HIGH);
}
/**************************************************************************/
/*!
*/
/**************************************************************************/
uint8_t Adafruit_RA8875::readStatus(void)
{
digitalWrite(_cs, LOW);
SPI.transfer(RA8875_CMDREAD);
uint8_t x = SPI.transfer(0x0);
digitalWrite(_cs, HIGH);
return x;
}
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