Eric Johnson
Hacked version of AdaFruit graphics library for SSD1306 usage on I2C
Diff: main.cpp
- Revision:
- 0:b0151666c710
diff -r 000000000000 -r b0151666c710 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Jun 15 15:01:14 2017 +0000
@@ -0,0 +1,241 @@
+#include "mbed.h"
+
+#include "SSD1306-Library.h"
+#include "FreeSans9pt7b.h"
+
+
+Serial pc(USBTX, USBRX);
+
+DigitalOut gpo(D0);
+DigitalOut led(LED_RED);
+
+/**************************************************
+ * graphics_simple_demo
+ **************************************************/
+void graphics_simple_demo(SSD1306 display) {
+ display.setRotation(0);
+ display.clearDisplay();
+ display.drawFastVLine(SSD1306_LCDWIDTH/2, 0, SSD1306_LCDHEIGHT, WHITE);
+ display.display();
+
+// wait(1);
+ display.clearDisplay();
+ display.drawFastHLine(0, SSD1306_LCDHEIGHT/2, SSD1306_LCDWIDTH, WHITE);
+ display.display();
+}
+
+/**************************************************
+ * graphics_speed_demo
+ **************************************************/
+void graphics_speed_demo(SSD1306 display, bool trail) {
+ display.setRotation(0);
+ //display.clearDisplay();
+
+ int32_t y = 0;
+ int32_t delta_y = 1;
+
+ for (int32_t x=0; x<display.width(); x++) {
+ display.drawFastVLine(x, 0, y, WHITE);
+ display.display();
+ if (!trail)
+ display.drawFastVLine(x, 0, y, BLACK);
+ y += delta_y;
+ if ((y<0) || (y >= display.height()))
+ delta_y = -delta_y;
+ }
+}
+/**************************************************
+ * graphics_line_demo
+ **************************************************/
+void graphics_line_demo(SSD1306 display, int32_t count) {
+ display.setRotation(0);
+ display.clearDisplay();
+
+ //int32_t y = 0;
+ int32_t delta_y = 3;
+ int32_t delta_x = 5;
+
+ switch (count % 4) {
+ //////////////////////////////////////////////////////////////////
+ case 0:
+ for (int32_t x=0; x<display.width(); x+=delta_x)
+ display.drawFastVLine(x, 0, display.height(), WHITE);
+
+ for (int32_t y=0; y<display.height(); y+=delta_y)
+ display.drawFastHLine(0, y, display.width(), WHITE);
+ break;
+ //////////////////////////////////////////////////////////////////
+ case 1:
+ delta_y = 2;
+ delta_x = 2;
+ for (int32_t x=0; x<display.width(); x+=delta_x)
+ display.drawFastVLine(x, 0, display.height(), WHITE);
+
+ for (int32_t y=0; y<display.height(); y+=delta_y)
+ display.drawFastHLine(0, y, display.width(), WHITE);
+ break;
+ //////////////////////////////////////////////////////////////////
+ case 2:
+ {
+ int32_t w = display.width();
+ int32_t h = display.height();
+ delta_y = 4;
+ delta_x = 4;
+ for (int32_t x=0; x<w/2; x+=delta_x) {
+ display.drawLine(w/2, h-x, w-x, h, WHITE);
+ display.drawLine(w/2, h-x, x, h, WHITE);
+ }
+ display.drawLine(w/2, 0, w/2, h, WHITE);
+ break;
+ }
+ //////////////////////////////////////////////////////////////////
+ case 3:
+ {
+ int32_t w = display.width();
+ int32_t h = display.height();
+ delta_x = 4;
+ display.drawLine(0, 0, w, 0, WHITE);
+ for (int32_t x=0; x<w/2; x+=delta_x) {
+ display.drawLine(w/2+x, 0, w, 2*(w-2*x)*x/h, WHITE);
+ display.drawLine(w/2-x, 0, 0, 2*(w-2*x)*x/h, WHITE);
+ }
+ break;
+ }
+ }
+ //////////////////////////////////////////////////////////////////
+
+ display.display();
+}
+
+/**************************************************
+ * graphics_demo
+ **************************************************/
+#define GDLOGO_W 111
+#define GDLOGO_H 48
+
+ const uint8_t gdLogo[GDLOGO_H/8 * GDLOGO_W] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0xC0, 0xE0, 0xE0, 0xF0, 0xF0, 0xF8, 0xF8, 0xF8, 0xFC, 0xFC, 0xFC, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0x7C, 0xFC, 0xFC, 0xFC, 0xF8, 0xF8, 0xF8, 0xF0, 0xF0, 0xE0, 0xE0, 0xC0, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0xC0, 0xF0, 0xFC, 0xFE, 0xFF, 0xFF, 0x3F, 0x1F, 0x0F, 0x07, 0x03, 0x03, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x03, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0xFF, 0xFF, 0xFE, 0xF8, 0xF0, 0xC0, 0x00, 0x00,
+ 0xF8, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8,
+ 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xF8, 0xFF, 0xFF, 0xFF, 0xFF, 0x1F,
+ 0x00, 0x01, 0x07, 0x0F, 0x3F, 0x7F, 0xFF, 0xFF, 0xFC, 0xF8, 0xF0, 0xE0, 0xC0, 0xC0, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0xC0, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0xFF, 0xFF, 0x7F, 0x3F, 0x0F, 0x07, 0x01, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x03, 0x03, 0x07, 0x0F, 0x0F, 0x1F, 0x1F, 0x1F, 0x3F, 0x3F, 0x3F, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3E, 0x3F, 0x3F, 0x3F, 0x1F, 0x1F, 0x1F, 0x0F, 0x0F, 0x07, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+void drawBitmap(SSD1306 display, int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color) {
+
+ int16_t i, j = (w + 7) / 8;
+ uint8_t byte;
+
+ for(i=0; i<w; i++ ) {
+ for(j=0; j<h; j++) {
+ if(j & 7)
+ byte >>= 1;
+ else
+ byte = bitmap[w*j/8 + i];
+ if(byte & 1)
+ display.drawPixel(x+i, y+j, color);
+ }
+ }
+}
+
+
+void testdrawchar(SSD1306 display) {
+ display.setTextSize(1);
+ display.setTextColor(WHITE);
+ display.setCursor(0,0);
+
+ for (uint8_t i=0; i < 168; i++) {
+ if (i % 21 == 20)
+ display.write('\n');
+ if (i != '\n')
+ display.write(i);
+ }
+ display.display();
+}
+
+void doText(SSD1306 display, bool both=true) {
+ display.setTextSize(1);
+ display.setTextColor(WHITE);
+ display.setCursor(0,both ? 0 : 12);
+ display.println("Hello, world!");
+ if (both)
+ display.setTextColor(BLACK, WHITE); // 'inverted' text
+ display.println("3.141592");
+ if (both) {
+ display.setTextSize(2);
+ display.setTextColor(WHITE);
+ display.print("0x"); display.println("DEADBEEF");
+ }
+ display.display();
+}
+
+
+void graphics_demo(SSD1306 display) {
+ display.setRotation(0);
+
+ display.clearDisplay();
+ drawBitmap(display, 8, 16, gdLogo, GDLOGO_W, GDLOGO_H, 2);
+ //display.startscrolldiagleft(3, 0x0F);
+ display.display();
+ wait(8);
+ display.stopscroll();
+
+ display.setFont(NULL);
+ display.clearDisplay();
+ display.fillCircle(display.width()/2, display.height()/2, display.height()/2-1, WHITE);
+ display.display();
+ wait(2);
+
+ display.clearDisplay();
+ display.drawFastVLine(0, 16, 32, WHITE);
+ display.drawFastHLine(0, 16, 32, WHITE);
+ display.display();
+ wait(2);
+
+ display.clearDisplay();
+ testdrawchar(display);
+ wait(4);
+
+ display.clearDisplay();
+ doText(display);
+ wait(4);
+
+ display.clearDisplay();
+ display.setFont(&FreeSans9pt7b);
+ doText(display, false);
+ wait(2);
+
+
+ display.startscrollleft(8, 0x0F);
+ wait(4);
+}
+
+
+
+/**************************************************
+ * main
+ **************************************************/
+int main()
+{
+ int32_t count = 0;
+ pc.baud(115200);
+ pc.printf("SSD1306 I2C Demo\r\n");
+
+ SSD1306 display = SSD1306();
+ display.begin(true);
+
+ while (true) {
+ gpo = !gpo; // toggle pin
+ led = !led; // toggle led
+ wait(1);
+ graphics_line_demo(display, count);
+ //graphics_simple_demo(display);
+ //graphics_speed_demo(display, (count%3)==0);
+ //graphics_demo(display);
+
+ pc.printf("Count: %d\r\n", count);
+
+ count++;
+ }
+}
\ No newline at end of file