Revision 2:0d8eb41bb976, committed 2013-08-19

Comitter:

sfjmt

Date:

Mon Aug 19 12:12:30 2013 +0000

Parent:

1:6ebd3ac910b6

Child:

3:4ff7fdb41bd2

Commit message:

line led (LPD8806) control

Changed in this revision

--- a/LPD8806.cpp	Fri Dec 16 10:26:35 2011 +0000
+++ b/LPD8806.cpp	Mon Aug 19 12:12:30 2013 +0000
@@ -7,16 +7,18 @@
 //
 // standard connected to 1st hardware SPI
 // LPD8806  <> MBED
-// DATA     -> P5
-// CLOCK    -> p7
+// DATA     -> P5( mosi ) or P11( mosi )
+// CLOCK    -> p7( sclk ) or p13( sclk )
 /*****************************************************************************/
 
 #include "LPD8806.h"
 
 //Define SPI pins
 //Connected to first SPI module
-SPI spi(p5, p6, p7); // mosi, miso, sclk
-//SPI spi(p11, p12, p13); // mosi, miso, sclk
+//example...SPI spi(p5, p6, p7); // mosi, miso, sclk (if don't use ... NC(not connected))
+
+//SPI spi(p5, NC, p7); // mosi, miso, sclk (if don't use ... NC(not connected))
+SPI spi(p11, NC, p13); // mosi(data), miso, sclk(clock) (if don't use ... NC(not connected))
 
 LPD8806::LPD8806(uint16_t n) {
     // Allocate 3 bytes per pixel:
@@ -30,8 +32,12 @@
 
     // Setup the spi for 8 bit data, low steady state clock,
     // first edge capture, with a 2MHz clock rate
+//    spi.format(8,3);
+//    spi.frequency(2000000);
     spi.format(8,0);
     spi.frequency(2000000);
+//    spi2.format(8,0);
+//    spi2.frequency(2000000);
 
     // Issue initial latch to 'wake up' strip (latch length varies w/numLEDs)
     writezeros(3 * ((numLEDs + 63) / 64));
@@ -42,7 +48,10 @@
 }
 
 void LPD8806::writezeros(uint16_t n) {
-    while (n--) spi.write(0x00);
+    while (n--){
+        spi.write(0x00);
+//        spi2.write(0x00);
+    }
 }
 
 // This is how data is pushed to the strip.  Unfortunately, the company
@@ -54,6 +63,7 @@
 
     for (i=0; i<nl3; i++ ) {
         spi.write(pixels[i]);
+//        spi2.write(pixels[i]);
     }
 
     // Write latch at end of data; latch length varies with number of LEDs