After debugging the led array is correct. I simplified the debugging by trying to output to a single LED. Again, works on arduino but not netduino. What is happening on the netduino is twice the specified LEDS is changing to random colors. So if I specifiy 1 LED it will affect 2 LEDs, if I specify 3 it will affest 6.
Here's the post_frame function, I commented out the arduino line and put the .NET line below it. I don't see why it would cause those problems.
//Takes the current strip color array and pushes it out
private void post_frame()
{
//Each LED requires 24 bits of data
//MSB: R7, R6, R5..., G7, G6..., B7, B6... B0
//Once the 24 bits have been delivered, the IC immediately relays these bits to its neighbor
//Pulling the clock low for 500us or more causes the IC to post the data.
for (int LED_number = 0; LED_number < _LEDS.Length; LED_number++)
{
int this_led_color = _LEDS[LED_number]; //24 bits of color data
for (byte color_bit = 23; color_bit != 255; color_bit--)
{
//Feed color bit 23 first (red data MSB)
//digitalWrite(CKI, LOW); //Only change data when clock is low
_clock.Write(false);
//int mask = 1L << color_bit;
int mask = 1 << color_bit;
//The 1'L' forces the 1 to start as a 32 bit number, otherwise it defaults to 16-bit.
if ((this_led_color & mask) != 0)
//digitalWrite(SDI, HIGH);
_data.Write(true);
else
//digitalWrite(SDI, LOW);
_data.Write(false);
//digitalWrite(CKI, HIGH); //Data is latched when clock goes high
_clock.Write(true);
}
}
//Pull clock low to put strip into reset/post mode
//digitalWrite(CKI, LOW);
//delayMicroseconds(500); //Wait for 500us to go into reset
_clock.Write(false);
DelayMicroSec(500);
}
/// <summary>
/// Blocks thread for given number of microseconds
/// </summary>
/// <param name="microSeconds">Delay in microseconds</param>
private void DelayMicroSec(int microSeconds)
{
DateTime startTime = DateTime.Now;
int stopTicks = microSeconds * 10;
TimeSpan divTime = DateTime.Now - startTime;
while (divTime.Ticks < stopTicks)
{
divTime = DateTime.Now - startTime;
}
}
