Diff: main.cpp

Revision:

0:0992b23a3b05

Child:

1:8e28c267ff1a

diff -r 000000000000 -r 0992b23a3b05 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Mar 17 11:22:39 2011 +0000
@@ -0,0 +1,136 @@
+// A simple program to cycle a chain of shiftbrites through RGB,MCY,W using mbed.
+
+// Shift register code from:        http://mbed.org/users/ChriX/notebook/shift-register-function/
+// Shiftbrite Arduino code from:    http://macetech.com/blog/node/54
+
+#include "mbed.h"
+
+DigitalOut datapin(p30);
+DigitalOut latchpin(p29);
+DigitalOut enablepin(p28);
+DigitalOut clockpin(p27);
+
+unsigned long SB_CommandPacket;
+int SB_CommandMode;
+int SB_BlueCommand;
+int SB_RedCommand;
+int SB_GreenCommand;
+int No_of_shiftbrites = 4;
+
+void shiftOut(DigitalOut data, DigitalOut clk, int sodata) {
+
+    int i;
+
+    for (i = 7; i >= 0; i--) {
+
+        clk = 0;
+
+        if(sodata & (1 << i)){
+            data = 1;
+        } else {
+            data = 0;
+        }
+
+        clk = 1;
+        data = 0;
+    }
+
+return;
+
+}
+
+
+void SB_SendPacket() {
+
+    for (int y = No_of_shiftbrites-1; y >= 0; y--) {
+        SB_CommandPacket = SB_CommandMode & 0xB11;
+        SB_CommandPacket = (SB_CommandPacket << 10) | (SB_BlueCommand & 1023);
+        SB_CommandPacket = (SB_CommandPacket << 10) | (SB_RedCommand & 1023);
+        SB_CommandPacket = (SB_CommandPacket << 10) | (SB_GreenCommand & 1023);
+    
+        shiftOut(datapin, clockpin, SB_CommandPacket >> 24);
+        shiftOut(datapin, clockpin, SB_CommandPacket >> 16);
+        shiftOut(datapin, clockpin, SB_CommandPacket >> 8);
+        shiftOut(datapin, clockpin, SB_CommandPacket);
+    
+    
+        wait_us(500);
+        latchpin = 1;
+        wait_us(500);
+        latchpin = 0;
+    }
+
+}
+
+int main() {
+    while(1) {
+        SB_CommandMode = 0xB01;
+        SB_RedCommand = 127;
+        SB_GreenCommand = 127;
+        SB_BlueCommand = 127;
+        SB_SendPacket();
+        
+        // Red
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 127; // max = 1023
+        SB_GreenCommand = 0;
+        SB_BlueCommand = 0;
+        SB_SendPacket();
+        
+        wait_ms(500);
+        
+        // Green
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 0;
+        SB_GreenCommand = 127;
+        SB_BlueCommand = 0;
+        SB_SendPacket();
+        
+        wait_ms(500);
+        
+        // Blue
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 0;
+        SB_GreenCommand = 0;
+        SB_BlueCommand = 127;
+        SB_SendPacket();
+        
+        wait_ms(500);
+        
+        // Magenta
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 127;
+        SB_GreenCommand = 0;
+        SB_BlueCommand = 127;
+        SB_SendPacket();
+        
+        wait_ms(500);
+        
+        // Cyan
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 0;
+        SB_GreenCommand = 127;
+        SB_BlueCommand = 127;
+        SB_SendPacket();
+        
+        wait_ms(500);
+        
+        // Yellow
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 127;
+        SB_GreenCommand = 127;
+        SB_BlueCommand = 0;
+        SB_SendPacket();
+        
+        wait_ms(500);
+        
+        // White
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 127;
+        SB_GreenCommand = 127;
+        SB_BlueCommand = 127;
+        SB_SendPacket();
+        
+        wait_ms(500);
+    }
+}