Changes between Version 1 and Version 2 of wade/embedded/arduino/example/example_3-3

Timestamp:

Feb 22, 2010, 3:39:31 PM (15 years ago)

Author:

wade

Comment:

--

wade/embedded/arduino/example/example_3-3

@@ -9 +9 @@
  *     
  */
+// display array size
+#define display_array_size 64
+// ascii 5x7 dot font
+#define data_ascii_A 0x7C, 0x12, 0x11, 0x12, 0x7C, 0x00, 0x00, 0x00  // A 65
+#define data_ascii_R 0x7F, 0x09, 0x19, 0x29, 0x46, 0x00, 0x00, 0x00  // R 82
+#define data_ascii_D 0x7F, 0x41, 0x41, 0x41, 0x3E, 0x00, 0x00, 0x00  // D 68
+#define data_ascii_U 0x3F, 0x40, 0x40, 0x40, 0x3F, 0x00, 0x00, 0x00  // U 85
+#define data_ascii_I 0x00, 0x41, 0x7F, 0x41, 0x00, 0x00, 0x00, 0x00  // I 73
+#define data_ascii_N 0x7F, 0x04, 0x08, 0x10, 0x7F, 0x00, 0x00, 0x00  // N 78
+#define data_ascii_O 0x3E, 0x41, 0x41, 0x41, 0x3E, 0x00, 0x00, 0x00  // O 79
+#define data_ascii_colon 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00  // : 58
+// byte data_0[5]={0x03E, B00111110, 0x049, 0x045, 0x03E};
+// display array 
+byte data_ascii[][display_array_size] = {
+                       data_ascii_A,
+                       data_ascii_R,
+                       data_ascii_D,
+                       data_ascii_U,
+                       data_ascii_I,
+                       data_ascii_N,
+                       data_ascii_O,
+                       data_ascii_colon
+                       }; 
 
-#define data_ascii_Y {0x03, 0x04, 0x78, 0x04, 0x03} // Y 89
-#define data_ascii_Z {0x61, 0x59, 0x49, 0x4D, 0x43} // Z 90
-//byte data_0[5]={0x03E, B00111110, 0x049, 0x045, 0x03E};
-byte data_0[8]={0x03E, 0x051, 0x049, 0x045, 0x03E, 0x0FF, 0x0FF, 0x0FF};
-// ascii 5x7 dot font
-byte data_ascii[][8] = {
-                       data_ascii_Z
-                       }; // 9
-
-//Pin connected to ST_CP of 74HC595 for scanning
+// Pin connected to ST_CP of 74HC595 for scanning
 int scan_latch_pin = 5;
-//Pin connected to SH_CP of 74HC595 for scanning
+// Pin connected to SH_CP of 74HC595 for scanning
 int scan_clock_pin = 6;
-//Pin connected to DS of 74HC595 for scanning
+// Pin connected to DS of 74HC595 for scanning
 int scan_data_pin = 7;
-//Pin connected to ST_CP of 74HC595 for data
-//int data_latch_pin = 5;
-//Pin connected to SH_CP of 74HC595 for data
-//int data_clock_pin = 6;
-//Pin connected to DS of 74HC595 for data
-//int data_data_pin = 7;
 
 
@@ -39 +47 @@
   pinMode(scan_data_pin, OUTPUT);
   Serial.begin(9600);
-  for (int i = 0; i< 8; i++)
-    data_ascii[0][i] ^= 0xFF; 
-  
+  for (int i = 0; i < display_array_size; i++)
+    data_ascii[0][i] ^= 0xFF;  
 }
 
 void loop() {
+  for (int i = 1; i < (display_array_size - 8); i++ )
+    display_led_from(i, 100);
+}
+
+void display_led_from(int index, int continue_time)
+{
   //count up routine
-  for (int j = 0; j < 8; j++) {
-    //ground scan_latch_pin and hold low for as long as you are transmitting
-    digitalWrite(scan_latch_pin, LOW);
-    shiftOut(scan_data_pin, scan_clock_pin, MSBFIRST, int(1 << j));
-    shiftOut(scan_data_pin, scan_clock_pin, MSBFIRST, int(data_ascii[0][j] ));
-    //return the latch pin high to signal chip that it 
-    //no longer needs to listen for information
-    digitalWrite(scan_latch_pin, HIGH);
-    //Serial.println(data_ascii[0][j] ^= 0xFF, HEX);
-    delay(1);
+  for (int k = 0; k < continue_time; k++)
+  {
+    for (int j = index; j < (index + 8); j++) {
+      //ground scan_latch_pin and hold low for as long as you are transmitting
+      digitalWrite(scan_latch_pin, LOW);
+      shiftOut(scan_data_pin, scan_clock_pin, MSBFIRST, int(1 << (j-index)));
+      shiftOut(scan_data_pin, scan_clock_pin, MSBFIRST, int(data_ascii[0][j] ));
+      //return the latch pin high to signal chip that it 
+      //no longer needs to listen for information
+      digitalWrite(scan_latch_pin, HIGH);
+      //Serial.print(1 << j-index, HEX);
+      //Serial.print(" = ");
+      //Serial.println(data_ascii[0][j], HEX);
+      //delay(1000);
+    }
   }
 }