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

Timestamp:

Feb 12, 2010, 12:11:10 AM (15 years ago)

Author:

wade

Comment:

--

wade/embedded/arduino/example/example_3-3

@@ +1 @@
+{{{
+/*                           
+ *              08 07 06 05 04 03 02 01
+ *                                   *
+ * 74HC595  PIN 09 10 11 12 13 14 15 16
+ *                    SH ST    DS
+ *                    棕 白    紫
+ * Arduino  PIN       3  2     4 
+ *     
+ */
+
+#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
+int scan_latch_pin = 5;
+//Pin connected to SH_CP of 74HC595 for scanning
+int scan_clock_pin = 6;
+//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;
+
+
+void setup() {
+  //set pins to output because they are addressed in the main loop
+  pinMode(scan_latch_pin, OUTPUT);
+  pinMode(scan_clock_pin, OUTPUT);
+  pinMode(scan_data_pin, OUTPUT);
+  Serial.begin(9600);
+  for (int i = 0; i< 8; i++)
+    data_ascii[0][i] ^= 0xFF; 
+  
+}
+
+void loop() {
+  //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);
+  }
+}
+
+void scan_line()
+{
+  //count up routine
+  for (int j = 1; j <= 256; j <<= 1) 
+  {
+    //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, j);   
+    //return the latch pin high to signal chip that it 
+    //no longer needs to listen for information
+    digitalWrite(scan_latch_pin, HIGH);
+    delay(500);
+  }
+}
+
+}}}