Diff: SD600A.cpp

Revision:

10:d2dd5c752f7b

Parent:

9:f90196d36597

Child:

11:97ef14b4c4de

--- a/SD600A.cpp	Wed Oct 10 03:21:16 2012 +0000
+++ b/SD600A.cpp	Wed Oct 10 03:57:16 2012 +0000
@@ -55,8 +55,10 @@
  
 void SD600A::write(uint8_t byte) {
     for (int i=0; i<8; i++) {
+        dat = !!(byte & (1 << (7 - i)));
+    
         clk = 1;
-        dat = (byte & 0x80);
+       // dat = (byte & 0x80);
         #ifdef DELAY_PERIOD
         wait_us(DELAY_PERIOD);
         #endif
@@ -64,12 +66,11 @@
         #ifdef DELAY_PERIOD
         wait_us(DELAY_PERIOD);
         #endif
-        byte <<= 1;
+        //byte <<= 1;
     }
 }
 
 void SD600A::begin(void) {
-
     // Issue initial latch to 'wake up' strip (latch length varies w/numLEDs)
     threadlock.lock();
     for (int i=0; i<numLEDs; i++) {
@@ -86,12 +87,12 @@
 }
 
 void SD600A::writeguard(void) {
-    // generate a 25-bit word of zeros
+    // generate a 25-bit word of ones
     clk = 1;
     #ifdef DELAY_PERIOD
     wait_us(DELAY_PERIOD);
     #endif
-    dat = 1;
+    dat = 0;
     #ifdef DELAY_PERIOD
     wait_us(DELAY_PERIOD);
     #endif
@@ -128,29 +129,29 @@
 // Convert R,G,B to combined 32-bit color
 uint32_t SD600A::Color(uint8_t r, uint8_t g, uint8_t b) {
     // Take 23 bits of the value and append them end to end
-    // We cannot drive all ones or it will make the part latch if the previous word ended in zero!
-    return 0xfffffe & ((uint32_t)g << 16) | ((uint32_t)r << 8) | (uint32_t)b;
+    // We cannot drive all ones or it will make the part latch if the previous word ended in one!
+    return 0xfefefe & ((uint32_t)g << 16) | ((uint32_t)r << 8) | (uint32_t)b;
 }
 
 // store the rgb component in our array
 void SD600A::setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b) {
     if (n >= numLEDs) return; // '>=' because arrays are 0-indexed
 
-    pixels[n*3  ] = g & 0xff;
-    pixels[n*3+1] = r & 0xff;
+    pixels[n*3  ] = g & 0xfe;
+    pixels[n*3+1] = r & 0xfe;
     pixels[n*3+2] = b & 0xfe;
 }
 
 void SD600A::setPixelR(uint16_t n, uint8_t r) {
     if (n >= numLEDs) return; // '>=' because arrays are 0-indexed
 
-    pixels[n*3+1] = r & 0xff;
+    pixels[n*3+1] = r & 0xfe;
 }
 
 void SD600A::setPixelG(uint16_t n, uint8_t g) {
     if (n >= numLEDs) return; // '>=' because arrays are 0-indexed
 
-    pixels[n*3] = g & 0xff;
+    pixels[n*3] = g & 0xfe;
 }
 
 void SD600A::setPixelB(uint16_t n, uint8_t b) {
@@ -162,7 +163,7 @@
 void SD600A::setPixelColor(uint16_t n, uint32_t c) {
     if (n >= numLEDs) return; // '>=' because arrays are 0-indexed
 
-    pixels[n*3  ] = (c >> 16) & 0xff;
-    pixels[n*3+1] = (c >>  8) & 0xff;
+    pixels[n*3  ] = (c >> 16) & 0xfe;
+    pixels[n*3+1] = (c >>  8) & 0xfe;
     pixels[n*3+2] =  c        & 0xfe;
 }