Stefan Staub
new library for the EADOG LCD display from electronic assembly
Diff: EADOG.cpp
- Revision:
- 1:03129e57a003
diff -r 6a3d8b1e3d24 -r 03129e57a003 EADOG.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/EADOG.cpp Thu Sep 22 11:28:11 2016 +0000
@@ -0,0 +1,473 @@
+/* mbed library for the mbed Lab Board 128*32 pixel LCD
+ * use ST7565R controller
+ * Copyright (c) 2016 Stefan Staub
+ * Released under the MIT License: http://mbed.org/license/mit
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "EADOG.h"
+#include "mbed.h"
+#include "stdio.h"
+#include "Small_7.h"
+
+EADOG::EADOG(PinName mosi, PinName sck, PinName reset, PinName a0, PinName cs, uint8_t type) : _spi(mosi, NC, sck), _reset(reset), _a0(a0), _cs(cs), _type(type), graphic_buffer() {
+ if (_type == DOGM132) {
+ width = 132;
+ height = 32;
+ graphic_buffer_size = 528;
+ graphic_buffer = new uint8_t [graphic_buffer_size];
+ }
+
+ if (_type == DOGM128 || _type == DOGL128) {
+ width = 128;
+ height = 64;
+ graphic_buffer_size = 1024;
+ graphic_buffer = new uint8_t [graphic_buffer_size];
+ }
+ init();
+ }
+
+static void inline swap(int &a, int &b) {
+ int c = a;
+ a = b;
+ b = c;
+ }
+
+void EADOG::display(uint8_t display) {
+ if (display == ON) { // display on
+ write_command(0xA4);
+ write_command(0xAF);
+ }
+ if (display == OFF) { // display off
+ write_command(0xAE);
+ }
+
+ if (display == SLEEP) {// display sleep
+ write_command(0xA5);
+ write_command(0xAE);
+ }
+ if(display == INVERT) { // invert display
+ write_command(0xA7);
+ }
+ if(display == DEFAULT) { // set to normal display
+ write_command(0xA6);
+ }
+ if (display == TOPVIEW) { // reverse orientation
+ write_command(0xA0); // ADC normal
+ write_command(0xC8); // reversed com31-com0
+ update(); // update necessary
+ }
+ if (display == BOTTOM) { // normal orientation
+ write_command(0xA1); // ADC reverse
+ write_command(0xC0); // normal com0-com31
+ update(); // update necessary
+ }
+ if (display == CONTRAST) {
+ if (_type == DOGM132) {
+ write_command(0x81); // set contrast to default for dogm 128
+ write_command(0x1F);
+ }
+ if (_type == DOGM128) {
+ write_command(0x81); // set contrast to default for dogm132
+ write_command(0x16);
+ }
+ if (_type == DOGL128) {
+ write_command(0x81); // set contrast to default for dogl132
+ write_command(0x10);
+ }
+ }
+ }
+
+void EADOG::display(uint8_t display, uint8_t value) {
+ if (display == CONTRAST) {
+ if (value < 64) {
+ write_command(0x81); // set contrast
+ write_command(value & 0x3F);
+ }
+ }
+ }
+
+// write command to lcd controller
+void EADOG::write_command(uint8_t command) {
+ _a0 = 0;
+ _cs = 0;
+ _spi.write(command);
+ _cs = 1;
+ }
+
+// write data to lcd controller
+void EADOG::write_data(uint8_t data) {
+ _a0 = 1;
+ _cs = 0;
+ _spi.write(data);
+ _cs = 1;
+ }
+
+// reset and init the lcd controller
+void EADOG::init() {
+ _spi.format(8, 3); // 8 bit spi mode 3
+ _spi.frequency(20000000); // 19,2 Mhz SPI clock
+
+ //DigitalOut _reset(A1);
+ _a0 = 0;
+ _cs = 1;
+ _reset = 0; // display reset
+ wait_us(50);
+ _reset = 1; // end reset
+ wait_ms(5);
+
+ // Start Initial Sequence
+ write_command(0x40); // display start line 0
+ write_command(0xA1); // ADC reverse
+ write_command(0xC0); // normal com0-com31
+ write_command(0xA6); // display normal
+ write_command(0xA2); // set bias 1/9 (duty 1/33)
+ write_command(0x2F); // booster, regulator and follower on
+ write_command(0xF8); // set internal booster to 3x/4x
+ write_command(0x00);
+ if (_type == DOGM132) {
+ write_command(0x23); // set contrast
+ write_command(0x81);
+ write_command(0x1F);
+ }
+ if (_type == DOGM128) {
+ write_command(0x27); // set contrast
+ write_command(0x81);
+ write_command(0x16);
+ }
+ if (_type == DOGL128) {
+ write_command(0x27); // set contrast
+ write_command(0x81);
+ write_command(0x10);
+ }
+ write_command(0xAC); // no indicator
+ write_command(0x00);
+ write_command(0xAF); // display on
+
+ // clear and update LCD
+ cls();
+ auto_update = 1; // switch on auto update
+ locate(0, 0);
+ font((unsigned char*)Small_7); // standard font
+ }
+
+// update lcd
+void EADOG::update() {
+ //page 0
+ write_command(0x00); // set column low nibble 0
+ write_command(0x10); // set column hi nibble 0
+ write_command(0xB0); // set page address 0
+ _a0 = 1;
+
+ for (int i = 0; i < width; i++) {
+ write_data(graphic_buffer[i]);
+ }
+
+ // page 1
+ write_command(0x00); // set column low nibble 0
+ write_command(0x10); // set column hi nibble 0
+ write_command(0xB1); // set page address 1
+ _a0 = 1;
+
+ for (int i = width; i < width * 2; i++) {
+ write_data(graphic_buffer[i]);
+ }
+
+ //page 2
+ write_command(0x00); // set column low nibble 0
+ write_command(0x10); // set column hi nibble 0
+ write_command(0xB2); // set page address 2
+ _a0 = 1;
+
+ for (int i = width * 2; i < width * 3; i++) {
+ write_data(graphic_buffer[i]);
+ }
+
+ //page 3
+ write_command(0x00); // set column low nibble 0
+ write_command(0x10); // set column hi nibble 0
+ write_command(0xB3); // set page address 3
+ _a0 = 1;
+
+ for (int i = width * 3; i < width * 4; i++) {
+ write_data(graphic_buffer[i]);
+ }
+
+ if (_type == DOGM128 || _type == DOGL128) {
+ //page 4
+ write_command(0x00); // set column low nibble 0
+ write_command(0x10); // set column hi nibble 0
+ write_command(0xB4); // set page address 3
+ _a0 = 1;
+
+ for (int i = width * 4; i < width * 5; i++) {
+ write_data(graphic_buffer[i]);
+ }
+
+ //page 5
+ write_command(0x00); // set column low nibble 0
+ write_command(0x10); // set column hi nibble 0
+ write_command(0xB5); // set page address 3
+ _a0 = 1;
+
+ for (int i = width * 5; i < width * 6; i++) {
+ write_data(graphic_buffer[i]);
+ }
+
+ //page 6
+ write_command(0x00); // set column low nibble 0
+ write_command(0x10); // set column hi nibble 0
+ write_command(0xB6); // set page address 3
+ _a0 = 1;
+
+ for (int i = width * 6; i < width *7; i++) {
+ write_data(graphic_buffer[i]);
+ }
+
+ //page 7
+ write_command(0x00); // set column low nibble 0
+ write_command(0x10); // set column hi nibble 0
+ write_command(0xB7); // set page address 3
+ _a0 = 1;
+
+ for (int i = width * 7; i < width *8; i++) {
+ write_data(graphic_buffer[i]);
+ }
+ }
+
+ _cs = 0;
+
+ }
+void EADOG::update(uint8_t mode) {
+ if (mode == MANUAL) auto_update = 0;
+ if (mode == AUTO) auto_update = 1;
+ }
+
+// clear screen
+void EADOG::cls() {
+ memset(graphic_buffer, 0x00, graphic_buffer_size); // clear display graphic_buffer
+ update();
+ }
+
+// set one pixel in graphic_buffer
+void EADOG::pixel(int x, int y, uint8_t color) {
+ if (x > width - 1 || y > height - 1 || x < 0 || y < 0) return;
+ if (color == 0) graphic_buffer[x + ((y / 8) * width)] &= ~(1 << (y % 8)); // erase pixel
+ else graphic_buffer[x + ((y / 8) * width)] |= (1 << (y % 8)); // set pixel
+ }
+
+void EADOG::point(int x, int y, uint8_t colour) {
+ pixel(x, y, colour);
+ if (auto_update) update();
+ }
+
+// This function uses Bresenham's algorithm to draw a straight line.
+void EADOG::line(int x0, int y0, int x1, int y1, uint8_t colour) {
+ int dx = abs(x1 - x0), sx = x0 < x1 ? 1 : -1;
+ int dy = -abs(y1 - y0), sy = y0 < y1 ? 1 : -1;
+ int err = dx + dy, e2; /* error value e_xy */
+
+ while(1) {
+ pixel(x0, y0, 1);
+ if (x0 == x1 && y0 == y1) break;
+ e2 = 2 * err;
+ if (e2 > dy) { err += dy; x0 += sx; } /* e_xy+e_x > 0 */
+ if (e2 < dx) { err += dx; y0 += sy; } /* e_xy+e_y < 0 */
+ }
+ if (auto_update) update();
+ }
+
+void EADOG::rectangle(int x0, int y0, int x1, int y1, uint8_t colour) {
+ uint8_t upd = auto_update;
+ auto_update = 0;
+ line(x0, y0, x1, y0, colour);
+ line(x0, y1, x1, y1, colour);
+ line(x0, y0, x0, y1, colour);
+ line(x1, y0, x1, y1, colour);
+ auto_update = upd;
+ if (auto_update) update();
+ }
+
+void EADOG::fillrect(int x0, int y0, int x1, int y1, uint8_t colour) {
+ if (x0 > x1) swap(x0, x1);
+ if (y0 > y1) swap(y0, y1);
+ for (int i = x0; i <= x1; i++) {
+ for (int j = y0; j <= y1; j++) {
+ pixel(i, j, colour);
+ }
+ }
+ if (auto_update) update();
+ }
+
+void EADOG::roundrect(int x0, int y0, int x1, int y1, int rnd, uint8_t colour) {
+ if (x0 > x1) swap(x0, x1);
+ if (y0 > y1) swap(y0, y1);
+ uint8_t upd = auto_update;
+ auto_update = 0;
+ int r = rnd;
+ int x = -r, y = 0, err = 2 - 2 * r;
+ line(x0 + rnd, y0, x1 - rnd, y0, colour);
+ line(x0 + rnd, y1, x1 - rnd, y1, colour);
+ line(x0, y0 + rnd, x0, y1 - rnd, colour);
+ line(x1, y0 + rnd, x1, y1 - rnd, colour);
+ do {
+ pixel(x1 - rnd + y, y0 + x + rnd, 1); // 1 I. quadrant
+ pixel(x1 - rnd - x, y1 + y - rnd, 1); // 2 IV. quadrant
+ pixel(x0 + rnd - y, y1 - rnd - x, 1); // 3 III. quadrant
+ pixel(x0 + rnd + x, y0 + rnd - y, 1); // 4 II. quadrant
+ r = err;
+ if (r <= y) err += ++y * 2 + 1;
+ if (r > x || err > y) err += ++x * 2 + 1;
+ } while (x < 0);
+ auto_update = upd;
+ if (auto_update) update();
+ }
+
+void EADOG::fillrrect(int x0, int y0, int x1, int y1, int rnd, uint8_t colour) {
+ if (x0 > x1) swap(x0, x1);
+ if (y0 > y1) swap(y0, y1);
+ uint8_t upd = auto_update;
+ auto_update = 0;
+ int r = rnd;
+ int x = -r, y = 0, err = 2 - 2 * r;
+ for (int i = x0; i <= x1; i++) {
+ for (int j = y0+rnd; j <= y1-rnd; j++) {
+ pixel(i, j, colour);
+ }
+ }
+ do {
+ line(x0 + rnd - y, y0 + rnd + x, x1 - rnd + y, y0 + rnd + x, 1);
+ line(x0 + rnd + x, y1 - rnd + y, x1 - rnd - x, y1 - rnd + y, 1);
+ r = err;
+ if (r <= y) err += ++y * 2 + 1;
+ if (r > x || err > y) err += ++x * 2 + 1;
+ } while (x < 0);
+ auto_update = upd;
+ if (auto_update) update();
+ }
+
+void EADOG::circle(int x0, int y0, int r, uint8_t colour) {
+ int x = -r, y = 0, err = 2 - 2 * r;
+ do {
+ pixel(x0 + y, y0 + x, 1); // 1 I. quadrant
+ pixel(x0 - x, y0 + y, 1); // 2 IV. quadrant
+ pixel(x0 - y, y0 - x, 1); // 3 III. quadrant
+ pixel(x0 + x, y0 - y, 1); // 4 II. quadrant
+ r = err;
+ if (r <= y) err += ++y * 2 + 1;
+ if (r > x || err > y) err += ++x * 2 + 1;
+ } while (x < 0);
+ if (auto_update) update();
+ }
+
+void EADOG::fillcircle(int x0, int y0, int r, uint8_t colour) {
+ uint8_t upd;
+ upd = auto_update;
+ auto_update = 0;
+ int x = -r, y = 0, err = 2 - 2 * r;
+ do {
+ line(x0 - y, y0 + x, x0 + y, y0 + x, 1);
+ line(x0 + x, y0 + y, x0 - x, y0 + y, 1);
+ r = err;
+ if (r <= y) err += ++y * 2 + 1;
+ if (r > x || err > y) err += ++x * 2 + 1;
+ } while (x < 0);
+ auto_update = upd;
+ if (auto_update) update();
+ }
+
+void EADOG::locate(uint8_t x, uint8_t y) {
+ char_x = x;
+ char_y = y;
+ }
+
+int EADOG::_putc(int value) {
+ if (value == '\n') { // new line
+ char_x = 0;
+ char_y = char_y + font_buffer[2];
+ if (char_y >= height - font_buffer[2]) {
+ char_y = 0;
+ }
+ }
+ else {
+ character(char_x, char_y, value);
+ if (auto_update) update();
+ }
+ return value;
+ }
+
+int EADOG::_getc() {
+ return -1;
+ }
+
+void EADOG::character(uint8_t x, uint8_t y, uint8_t c) {
+ unsigned int hor, vert, offset, bpl, b;
+ uint8_t *sign;
+ uint8_t z, w;
+
+ if ((c < 31) || (c > 127)) return; // test char range
+
+ // read font parameter from start of array
+ offset = font_buffer[0]; // bytes / char
+ hor = font_buffer[1]; // get hor size of font
+ vert = font_buffer[2]; // get vert size of font
+ bpl = font_buffer[3]; // bytes per line
+
+ if (char_x + hor > width) {
+ char_x = 0;
+ char_y = char_y + vert;
+ if (char_y >= height - font_buffer[2]) {
+ char_y = 0;
+ }
+ }
+
+ sign = &font_buffer[((c - 32) * offset) + 4]; // start of char bitmap
+ w = sign[0]; // width of actual char
+ // construct the char into the font_graphic_buffer
+ for (unsigned int j = 0; j < vert; j++) { // vert line
+ for (unsigned int i = 0; i < hor; i++) { // horz line
+ z = sign[bpl * i + ((j & 0xF8) >> 3) + 1];
+ b = 1 << (j & 0x07);
+ if (( z & b ) == 0x00) {
+ pixel(x+i, y+j, 0);
+ }
+ else {
+ pixel(x+i, y+j, 1);
+ }
+ }
+ }
+ char_x += w;
+ }
+
+
+void EADOG::font(uint8_t *f) {
+ font_buffer = f;
+ }
+
+void EADOG::bitmap(Bitmap bm, int x, int y) {
+ int b;
+ char d;
+
+ for (int v = 0; v < bm.ySize; v++) { // lines
+ for (int h = 0; h < bm.xSize; h++) { // pixel
+ if (h + x >= width) break;
+ if (v + y >= height) break;
+ d = bm.data[bm.byte_in_Line * v + ((h & 0xF8) >> 3)];
+ b = 0x80 >> (h & 0x07);
+ if ((d & b) == 0) {
+ pixel(x+h, y+v, 0);
+ }
+ else {
+ pixel(x+h, y+v, 1);
+ }
+ }
+ }
+ if (auto_update) update();
+ }