Diff: main.cpp

Revision:

1:8e28c267ff1a

Parent:

0:0992b23a3b05

Child:

2:62be298c6ab8

--- a/main.cpp	Thu Mar 17 11:22:39 2011 +0000
+++ b/main.cpp	Sun Mar 20 11:50:18 2011 +0000
@@ -1,136 +1,185 @@
-// 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);
-    }
-}
+// 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
+
+// Revision:
+// v1.0 - 17/03/2011:
+// v1.1 - 20/03/2011:   Separated Current Control from Color Data.
+//                      Current_Control() is now a function on it's own which can be put after each color change.
+//                      Added Global variable Cur which sets the current control register without having to hunt through the program.
+
+#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;
+
+// Set between 0 and 127
+int Cur = 31;
+
+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_ms(1);
+        latchpin = 1;
+        wait_ms(1);
+        latchpin = 0;
+    }
+    
+    return;
+
+}
+
+void Current_Control() {
+
+    int Comm = 0xB01;
+    int Cont1 = Cur;
+    int Cont2 = Cur;
+    int Cont3 = Cur;
+    unsigned long CommandPacket;
+    
+    for (int y = No_of_shiftbrites-1; y >= 0; y--) {
+        CommandPacket = Comm & 0xB11;
+        CommandPacket = (CommandPacket << 10) | (Cont1 & 1023);
+        CommandPacket = (CommandPacket << 10) | (Cont2 & 1023);
+        CommandPacket = (CommandPacket << 10) | (Cont3 & 1023);
+    
+        shiftOut(datapin, clockpin, CommandPacket >> 24);
+        shiftOut(datapin, clockpin, CommandPacket >> 16);
+        shiftOut(datapin, clockpin, CommandPacket >> 8);
+        shiftOut(datapin, clockpin, CommandPacket);
+    
+    
+        wait_ms(1);
+        latchpin = 1;
+        wait_ms(1);
+        latchpin = 0;
+   }
+   
+   return;
+
+}
+
+int main() {
+    while(1) {
+        Current_Control();
+        
+        // Red
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 1023; // max = 1023
+        SB_GreenCommand = 0;
+        SB_BlueCommand = 0;
+        SB_SendPacket();
+        
+        wait(3);
+        
+        Current_Control();
+        
+        // Green
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 0;
+        SB_GreenCommand = 1023;
+        SB_BlueCommand = 0;
+        SB_SendPacket();
+        
+        wait(3);
+        
+        Current_Control();
+        
+        // Blue
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 0;
+        SB_GreenCommand = 0;
+        SB_BlueCommand = 1023;
+        SB_SendPacket();
+        
+        wait(3);
+        
+        Current_Control();
+        
+        // Magenta
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 1023;
+        SB_GreenCommand = 0;
+        SB_BlueCommand = 1023;
+        SB_SendPacket();
+        
+        wait(3);
+        
+        Current_Control();
+        
+        // Cyan
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 0;
+        SB_GreenCommand = 1023;
+        SB_BlueCommand = 1023;
+        SB_SendPacket();
+        
+        wait(3);
+        
+        Current_Control();
+        
+        // Yellow
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 1023;
+        SB_GreenCommand = 1023;
+        SB_BlueCommand = 0;
+        SB_SendPacket();
+        
+        wait(3);
+        
+        Current_Control();
+        
+        // White
+        SB_CommandMode = 0xB00;
+        SB_RedCommand = 1023;
+        SB_GreenCommand = 1023;
+        SB_BlueCommand = 1023;
+        SB_SendPacket();
+        
+        wait(3);
+    }
+}