Created
April 4, 2014 00:22
-
-
Save SamClayton/9965568 to your computer and use it in GitHub Desktop.
Experimenting with ShiftBrite and MegaBrite pixels
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #define clockpin 13 // CI | |
| #define enablepin 10 // EI | |
| #define latchpin 9 // LI | |
| #define datapin 11 // DI | |
| #define NumLEDs 1 | |
| int LEDChannels[NumLEDs][3] = {0}; | |
| int SB_CommandMode; | |
| int SB_RedCommand; | |
| int SB_GreenCommand; | |
| int SB_BlueCommand; | |
| void setup() { | |
| pinMode(datapin, OUTPUT); | |
| pinMode(latchpin, OUTPUT); | |
| pinMode(enablepin, OUTPUT); | |
| pinMode(clockpin, OUTPUT); | |
| SPCR = (1<<SPE)|(1<<MSTR)|(0<<SPR1)|(0<<SPR0); | |
| digitalWrite(latchpin, LOW); | |
| digitalWrite(enablepin, LOW); | |
| } | |
| void SB_SendPacket() { | |
| if (SB_CommandMode == B01) { | |
| SB_RedCommand = 120; | |
| SB_GreenCommand = 100; | |
| SB_BlueCommand = 100; | |
| } | |
| SPDR = SB_CommandMode << 6 | SB_BlueCommand>>4; | |
| while(!(SPSR & (1<<SPIF))); | |
| SPDR = SB_BlueCommand<<4 | SB_RedCommand>>6; | |
| while(!(SPSR & (1<<SPIF))); | |
| SPDR = SB_RedCommand << 2 | SB_GreenCommand>>8; | |
| while(!(SPSR & (1<<SPIF))); | |
| SPDR = SB_GreenCommand; | |
| while(!(SPSR & (1<<SPIF))); | |
| } | |
| void WriteLEDArray() { | |
| SB_CommandMode = B00; // Write to PWM control registers | |
| for (int h = 0;h<NumLEDs;h++) { | |
| SB_RedCommand = LEDChannels[h][0]; | |
| SB_GreenCommand = LEDChannels[h][1]; | |
| SB_BlueCommand = LEDChannels[h][2]; | |
| SB_SendPacket(); | |
| } | |
| delayMicroseconds(15); | |
| digitalWrite(latchpin,HIGH); // latch data into registers | |
| delayMicroseconds(15); | |
| digitalWrite(latchpin,LOW); | |
| SB_CommandMode = B01; // Write to current control registers | |
| for (int z = 0; z < NumLEDs; z++) SB_SendPacket(); | |
| delayMicroseconds(15); | |
| digitalWrite(latchpin,HIGH); // latch data into registers | |
| delayMicroseconds(15); | |
| digitalWrite(latchpin,LOW); | |
| } | |
| void loop() { | |
| LEDChannels[0][0] = 1023; | |
| LEDChannels[0][1] = 0; | |
| LEDChannels[0][2] = 0; | |
| LEDChannels[1][0] = 0; | |
| LEDChannels[1][1] = 0; | |
| LEDChannels[1][2] = 1023; | |
| WriteLEDArray(); | |
| delay(200); | |
| LEDChannels[0][0] = 0; | |
| LEDChannels[0][1] = 0; | |
| LEDChannels[0][2] = 1023; | |
| LEDChannels[1][0] = 1023; | |
| LEDChannels[1][1] = 0; | |
| LEDChannels[1][2] = 0; | |
| WriteLEDArray(); | |
| delay(200); | |
| LEDChannels[0][0] = 0; | |
| LEDChannels[0][1] = 1023; | |
| LEDChannels[0][2] = 0; | |
| LEDChannels[1][0] = 1023; | |
| LEDChannels[1][1] = 0; | |
| LEDChannels[1][2] = 0; | |
| WriteLEDArray(); | |
| delay(200); | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment