Diff: main.cpp

Revision:

0:d53b674e7f03

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Mar 01 19:30:56 2015 +0000
@@ -0,0 +1,46 @@
+#include "mbed.h"
+#include "ST7565SPI.h"
+
+ST7565SPI lcd(/*MOSI*/ p5, /*SCK*/ p7, /*CS*/ p8,
+              /*RS*/ p11, /*RST*/ p12, /*Frequency*/ 1000000);
+
+// Dithered gray patterns
+uint8_t const pattern[8][4] = {
+    { 0xff, 0xff, 0xff, 0xff },  // 100%
+    { 0x77, 0xff, 0xdd, 0xff },  // 87.5%
+    { 0x55, 0xff, 0x55, 0xff },  // 75%
+    { 0x55, 0xbb, 0x55, 0xee },  // 62.5%
+    { 0x55, 0xaa, 0x55, 0xaa },  // 50%
+    { 0x55, 0x22, 0x55, 0x88 },  // 37.5%
+    { 0x55, 0x00, 0x55, 0x00 },  // 25%
+    { 0x11, 0x00, 0x44, 0x00 }   // 12.5% 
+};
+
+int main(void) {
+    // Initialize LCD
+    lcd.init(/*V0*/ 3, /*Contrast*/ 48, /*Bias*/ ST7565SPI::Bias1_9);
+    
+    // Draw horizontal stripes
+    for (uint8_t j = 0; j < 8; j++) {
+        lcd.setPage(j);
+        lcd.setColumn(0);
+        for (uint8_t i = 0; i < 128 / 4; i++) {
+            lcd.data(pattern[j][0]);
+            lcd.data(pattern[j][1]);
+            lcd.data(pattern[j][2]);
+            lcd.data(pattern[j][3]);
+        }
+    }
+    
+    // Scroll entire display by changing line offset values
+    uint8_t c = 0;
+    while (1) {
+        lcd.command(ST7565SPI::COMMON_OFFSET + c);
+        if (c == 0) {
+            c = 63;
+        } else {
+            c--;
+        }
+        wait(.25);
+    }
+}