skydarc meneldoll
/
test_TFT_11_v5
test st7735 on lpc1768 with mbed v5. bug with spi frequency...
ST7735/GFX.cpp
- Committer:
- skydarc
- Date:
- 2020-04-08
- Revision:
- 2:2946f9eefcae
File content as of revision 2:2946f9eefcae:
/* This is the core graphics library for all our displays, providing a common set of graphics primitives (points, lines, circles, etc.). It needs to be paired with a hardware-specific library for each display device we carry (to handle the lower-level functions). Adafruit invests time and resources providing this open source code, please support Adafruit & open-source hardware by purchasing products from Adafruit! Copyright (c) 2013 Adafruit Industries. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.*/ /*Modified for MBED usage and tested with STM32F411RE on a Nucleo board. Embedded Print methods from Arduino Print.Cpp/Print.h by James Kidd 2014 * */ #include <stdint.h> #include "GFX.h" #include "font.c" #include <math.h> #include <stdlib.h> #include <stddef.h> #define pgm_read_byte(addr) (*(const unsigned char *)(addr)) GFX::GFX(int16_t w, int16_t h): WIDTH(w), HEIGHT(h) { _width = WIDTH; _height = HEIGHT; rotation = 0; cursor_y = cursor_x = 0; textsize = 1; textcolor = textbgcolor = 0xFFFF; wrap = true; } // Draw a circle outline void GFX::drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color) { int16_t f = 1 - r; int16_t ddF_x = 1; int16_t ddF_y = -2 * r; int16_t x = 0; int16_t y = r; drawPixel(x0 , y0+r, color); drawPixel(x0 , y0-r, color); drawPixel(x0+r, y0 , color); drawPixel(x0-r, y0 , color); while (x<y) { if (f >= 0) { y--; ddF_y += 2; f += ddF_y; } x++; ddF_x += 2; f += ddF_x; drawPixel(x0 + x, y0 + y, color); drawPixel(x0 - x, y0 + y, color); drawPixel(x0 + x, y0 - y, color); drawPixel(x0 - x, y0 - y, color); drawPixel(x0 + y, y0 + x, color); drawPixel(x0 - y, y0 + x, color); drawPixel(x0 + y, y0 - x, color); drawPixel(x0 - y, y0 - x, color); } } void GFX::drawCircleHelper( int16_t x0, int16_t y0, int16_t r, uint8_t cornername, uint16_t color) { int16_t f = 1 - r; int16_t ddF_x = 1; int16_t ddF_y = -2 * r; int16_t x = 0; int16_t y = r; while (x<y) { if (f >= 0) { y--; ddF_y += 2; f += ddF_y; } x++; ddF_x += 2; f += ddF_x; if (cornername & 0x4) { drawPixel(x0 + x, y0 + y, color); drawPixel(x0 + y, y0 + x, color); } if (cornername & 0x2) { drawPixel(x0 + x, y0 - y, color); drawPixel(x0 + y, y0 - x, color); } if (cornername & 0x8) { drawPixel(x0 - y, y0 + x, color); drawPixel(x0 - x, y0 + y, color); } if (cornername & 0x1) { drawPixel(x0 - y, y0 - x, color); drawPixel(x0 - x, y0 - y, color); } } } void GFX::fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color) { drawFastVLine(x0, y0-r, 2*r+1, color); fillCircleHelper(x0, y0, r, 3, 0, color); } // Used to do circles and roundrects void GFX::fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, int16_t delta, uint16_t color) { int16_t f = 1 - r; int16_t ddF_x = 1; int16_t ddF_y = -2 * r; int16_t x = 0; int16_t y = r; while (x<y) { if (f >= 0) { y--; ddF_y += 2; f += ddF_y; } x++; ddF_x += 2; f += ddF_x; if (cornername & 0x1) { drawFastVLine(x0+x, y0-y, 2*y+1+delta, color); drawFastVLine(x0+y, y0-x, 2*x+1+delta, color); } if (cornername & 0x2) { drawFastVLine(x0-x, y0-y, 2*y+1+delta, color); drawFastVLine(x0-y, y0-x, 2*x+1+delta, color); } } } // Bresenham's algorithm - thx wikpedia void GFX::drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color) { int16_t steep = abs(y1 - y0) > abs(x1 - x0); if (steep) { swap(x0, y0); swap(x1, y1); } if (x0 > x1) { swap(x0, x1); swap(y0, y1); } int16_t dx, dy; dx = x1 - x0; dy = abs(y1 - y0); int16_t err = dx / 2; int16_t ystep; if (y0 < y1) { ystep = 1; } else { ystep = -1; } for (; x0<=x1; x0++) { if (steep) { drawPixel(y0, x0, color); } else { drawPixel(x0, y0, color); } err -= dy; if (err < 0) { y0 += ystep; err += dx; } } } // Draw a rectangle void GFX::drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) { drawFastHLine(x, y, w, color); drawFastHLine(x, y+h-1, w, color); drawFastVLine(x, y, h, color); drawFastVLine(x+w-1, y, h, color); } void GFX::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color) { // Update in subclasses if desired! drawLine(x, y, x, y+h-1, color); } void GFX::drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color) { // Update in subclasses if desired! drawLine(x, y, x+w-1, y, color); } void GFX::fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) { // Update in subclasses if desired! for (int16_t i=x; i<x+w; i++) { drawFastVLine(i, y, h, color); } } void GFX::fillScreen(uint16_t color) { fillRect(-10, -10, _width+20, _height+20, color); } // Draw a rounded rectangle void GFX::drawRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color) { // smarter version drawFastHLine(x+r , y , w-2*r, color); // Top drawFastHLine(x+r , y+h-1, w-2*r, color); // Bottom drawFastVLine(x , y+r , h-2*r, color); // Left drawFastVLine(x+w-1, y+r , h-2*r, color); // Right // draw four corners drawCircleHelper(x+r , y+r , r, 1, color); drawCircleHelper(x+w-r-1, y+r , r, 2, color); drawCircleHelper(x+w-r-1, y+h-r-1, r, 4, color); drawCircleHelper(x+r , y+h-r-1, r, 8, color); } // Fill a rounded rectangle void GFX::fillRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color) { // smarter version fillRect(x+r, y, w-2*r, h, color); // draw four corners fillCircleHelper(x+w-r-1, y+r, r, 1, h-2*r-1, color); fillCircleHelper(x+r , y+r, r, 2, h-2*r-1, color); } // Draw a triangle void GFX::drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color) { drawLine(x0, y0, x1, y1, color); drawLine(x1, y1, x2, y2, color); drawLine(x2, y2, x0, y0, color); } // Fill a triangle void GFX::fillTriangle ( int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color) { int16_t a, b, y, last; // Sort coordinates by Y order (y2 >= y1 >= y0) if (y0 > y1) { swap(y0, y1); swap(x0, x1); } if (y1 > y2) { swap(y2, y1); swap(x2, x1); } if (y0 > y1) { swap(y0, y1); swap(x0, x1); } if(y0 == y2) { // Handle awkward all-on-same-line case as its own thing a = b = x0; if(x1 < a) a = x1; else if(x1 > b) b = x1; if(x2 < a) a = x2; else if(x2 > b) b = x2; drawFastHLine(a, y0, b-a+1, color); return; } int16_t dx01 = x1 - x0, dy01 = y1 - y0, dx02 = x2 - x0, dy02 = y2 - y0, dx12 = x2 - x1, dy12 = y2 - y1; int32_t sa = 0, sb = 0; // For upper part of triangle, find scanline crossings for segments // 0-1 and 0-2. If y1=y2 (flat-bottomed triangle), the scanline y1 // is included here (and second loop will be skipped, avoiding a /0 // error there), otherwise scanline y1 is skipped here and handled // in the second loop...which also avoids a /0 error here if y0=y1 // (flat-topped triangle). if(y1 == y2) last = y1; // Include y1 scanline else last = y1-1; // Skip it for(y=y0; y<=last; y++) { a = x0 + sa / dy01; b = x0 + sb / dy02; sa += dx01; sb += dx02; /* longhand: a = x0 + (x1 - x0) * (y - y0) / (y1 - y0); b = x0 + (x2 - x0) * (y - y0) / (y2 - y0); */ if(a > b) swap(a,b); drawFastHLine(a, y, b-a+1, color); } // For lower part of triangle, find scanline crossings for segments // 0-2 and 1-2. This loop is skipped if y1=y2. sa = dx12 * (y - y1); sb = dx02 * (y - y0); for(; y<=y2; y++) { a = x1 + sa / dy12; b = x0 + sb / dy02; sa += dx12; sb += dx02; /* longhand: a = x1 + (x2 - x1) * (y - y1) / (y2 - y1); b = x0 + (x2 - x0) * (y - y0) / (y2 - y0); */ if(a > b) swap(a,b); drawFastHLine(a, y, b-a+1, color); } } void GFX::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color) { int16_t i, j, byteWidth = (w + 7) / 8; for(j=0; j<h; j++) { for(i=0; i<w; i++ ) { if(pgm_read_byte(bitmap + j * byteWidth + i / 8) & (128 >> (i & 7))) { drawPixel(x+i, y+j, color); } } } } // Draw a 1-bit color bitmap at the specified x, y position from the // provided bitmap buffer (must be PROGMEM memory) using color as the // foreground color and bg as the background color. void GFX::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color, uint16_t bg) { int16_t i, j, byteWidth = (w + 7) / 8; for(j=0; j<h; j++) { for(i=0; i<w; i++ ) { if(pgm_read_byte(bitmap + j * byteWidth + i / 8) & (128 >> (i & 7))) { drawPixel(x+i, y+j, color); } else { drawPixel(x+i, y+j, bg); } } } } //Draw XBitMap Files (*.xbm), exported from GIMP, //Usage: Export from GIMP to *.xbm, rename *.xbm to *.c and open in editor. //C Array can be directly used with this function void GFX::drawXBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color) { int16_t i, j, byteWidth = (w + 7) / 8; for(j=0; j<h; j++) { for(i=0; i<w; i++ ) { if(pgm_read_byte(bitmap + j * byteWidth + i / 8) & (1 << (i % 8))) { drawPixel(x+i, y+j, color); } } } } uint8_t GFX::write(uint8_t c) { if (c == '\n') { cursor_y += textsize*8; cursor_x = 0; } else if (c == '\r') { // skip em } else { drawChar(cursor_x, cursor_y, c, textcolor, textbgcolor, textsize); cursor_x += textsize*6; if (wrap && (cursor_x > (_width - textsize*6))) { cursor_y += textsize*8; cursor_x = 0; } } return 1; } // Draw a character void GFX::drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size) { if((x >= _width) || // Clip right (y >= _height) || // Clip bottom ((x + 6 * size - 1) < 0) || // Clip left ((y + 8 * size - 1) < 0)) // Clip top return; for (int8_t i=0; i<6; i++ ) { uint8_t line; if (i == 5) line = 0x0; else line = pgm_read_byte(font+(c*5)+i); for (int8_t j = 0; j<8; j++) { if (line & 0x1) { if (size == 1) // default size drawPixel(x+i, y+j, color); else { // big size fillRect(x+(i*size), y+(j*size), size, size, color); } } else if (bg != color) { if (size == 1) // default size drawPixel(x+i, y+j, bg); else { // big size fillRect(x+i*size, y+j*size, size, size, bg); } } line >>= 1; } } } void GFX::setCursor(int16_t x, int16_t y) { cursor_x = x; cursor_y = y; } void GFX::setTextSize(uint8_t s) { textsize = (s > 0) ? s : 1; } void GFX::setTextColor(uint16_t c) { // For 'transparent' background, we'll set the bg // to the same as fg instead of using a flag textcolor = textbgcolor = c; } void GFX::setTextColor(uint16_t c, uint16_t b) { textcolor = c; textbgcolor = b; } void GFX::setTextWrap(bool w) { wrap = w; } uint8_t GFX::getRotation(void) const { return rotation; } void GFX::setRotation(uint8_t x) { rotation = (x & 3); switch(rotation) { case 0: case 2: _width = WIDTH; _height = HEIGHT; break; case 1: case 3: _width = HEIGHT; _height = WIDTH; break; } } // Return the size of the display (per current rotation) int16_t GFX::width(void) const { return _width; } int16_t GFX::height(void) const { return _height; } void GFX::invertDisplay(bool i) { // Do nothing, must be subclassed if supported } //Methods from Print.cpp Arduino uint8_t GFX::write(const uint8_t *buffer, uint8_t size) { uint8_t n = 0; while (size--) { n += write(*buffer++); } return n; } uint8_t GFX::print(const char str[]) { return write(str); } uint8_t GFX::print(char c) { return write(c); } uint8_t GFX::print(unsigned char b, int base) { return print((unsigned long) b, base); } uint8_t GFX::print(int n, int base) { return print((long) n, base); } uint8_t GFX::print(unsigned int n, int base) { return print((unsigned long) n, base); } uint8_t GFX::print(long n, int base) { if (base == 0) { return write(n); } else if (base == 10) { if (n < 0) { int t = print('-'); n = -n; return printNumber(n, 10) + t; } return printNumber(n, 10); } else { return printNumber(n, base); } } uint8_t GFX::print(unsigned long n, int base) { if (base == 0) return write(n); else return printNumber(n, base); } uint8_t GFX::print(double n, int digits) { return printFloat(n, digits); } uint8_t GFX::println(void) { size_t n = print('\r'); n += print('\n'); return n; } uint8_t GFX::println(const char c[]) { size_t n = print(c); n += println(); return n; } uint8_t GFX::println(char c) { size_t n = print(c); n += println(); return n; } uint8_t GFX::println(unsigned char b, int numBase) { size_t n = print(b, numBase); n += println(); return n; } uint8_t GFX::println(int num, int base) { size_t n = print(num, base); n += println(); return n; } uint8_t GFX::println(unsigned int num, int base) { size_t n = print(num, base); n += println(); return n; } uint8_t GFX::println(long num, int base) { size_t n = print(num, base); n += println(); return n; } uint8_t GFX::println(unsigned long num, int base) { size_t n = print(num, base); n += println(); return n; } uint8_t GFX::println(double num, int digits) { size_t n = print(num, digits); n += println(); return n; } // Private Methods ///////////////////////////////////////////////////////////// uint8_t GFX::printNumber(unsigned long n, uint8_t base) { char buf[8 * sizeof(long) + 1]; // Assumes 8-bit chars plus zero byte. char *str = &buf[sizeof(buf) - 1]; *str = '\0'; // prevent crash if called with base == 1 if (base < 2) base = 10; do { unsigned long m = n; n /= base; char c = m - base * n; *--str = c < 10 ? c + '0' : c + 'A' - 10; } while(n); return write(str); } uint8_t GFX::printFloat(double number, uint8_t digits) { uint8_t n = 0; if (isnan(number)) return print("nan"); if (isinf(number)) return print("inf"); if (number > 4294967040.0) return print ("ovf"); // constant determined empirically if (number <-4294967040.0) return print ("ovf"); // constant determined empirically // Handle negative numbers if (number < 0.0) { n += print('-'); number = -number; } // Round correctly so that print(1.999, 2) prints as "2.00" double rounding = 0.5; for (uint8_t i=0; i<digits; ++i) rounding /= 10.0; number += rounding; // Extract the integer part of the number and print it unsigned long int_part = (unsigned long)number; double remainder = number - (double)int_part; n += print(int_part); // Print the decimal point, but only if there are digits beyond if (digits > 0) { n += print("."); } // Extract digits from the remainder one at a time while (digits-- > 0) { remainder *= 10.0; int toPrint = int(remainder); n += print(toPrint); remainder -= toPrint; } return n; }