Heroic Robotics / SD600A

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Fork of SD600A by Heroic Robotics

SD600A.h@26:98163818a82e, 2012-10-13 (annotated)

Committer:
heroic
Date:
Sat Oct 13 04:49:47 2012 +0000
Revision:
26:98163818a82e
Parent:
24:d8d960a7124e
Child:
27:6667543f3b28
Change SD600A SPI to use a single SD600ASupervisor for SPI.  This substantially reduces interrupt load.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
heroic 26:98163818a82e 1 // Mbed library to control SD600A-based RGB LED Strips
heroic 26:98163818a82e 2 // (c) 2011 Jelmer Tiete
heroic 26:98163818a82e 3 // This library is ported from the Arduino implementation of Adafruit Industries
heroic 26:98163818a82e 4 // found at: http://github.com/adafruit/LPD8806
heroic 26:98163818a82e 5 // and their strips: http://www.adafruit.com/products/306
heroic 26:98163818a82e 6 // Released under the MIT License: http://mbed.org/license/mit
heroic 26:98163818a82e 7 //
heroic 26:98163818a82e 8 /*****************************************************************************/
heroic 26:98163818a82e 9
heroic 26:98163818a82e 10 // Heavily modified by Jas Strong, 2012-10-04
heroic 26:98163818a82e 11 // Changed to use a virtual base class, drive the SD600A, and to use software SPI.
heroic 26:98163818a82e 12
heroic 26:98163818a82e 13 #include "mbed.h"
heroic 26:98163818a82e 14 #include "rtos.h"
heroic 26:98163818a82e 15 #include "LedStrip.h"
heroic 26:98163818a82e 16 #ifndef MBED_SD600A_H
heroic 26:98163818a82e 17 #define MBED_SD600A_H
heroic 26:98163818a82e 18
heroic 26:98163818a82e 19 #define INTERRUPT_INTERVAL (60)
heroic 26:98163818a82e 20
heroic 26:98163818a82e 21 class SD600A : public LedStrip {
heroic 26:98163818a82e 22 public:
heroic 26:98163818a82e 23 SD600A(PinName dataPin, PinName clockPin, int n);
heroic 26:98163818a82e 24 virtual void begin(void);
heroic 26:98163818a82e 25 virtual void show(void);
heroic 26:98163818a82e 26 virtual void blank(void);
heroic 26:98163818a82e 27 virtual void setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b);
heroic 26:98163818a82e 28 virtual void setPixelB(uint16_t n, uint8_t b);
heroic 26:98163818a82e 29 virtual void setPixelG(uint16_t n, uint8_t g);
heroic 26:98163818a82e 30 virtual void setPixelR(uint16_t n, uint8_t r);
heroic 26:98163818a82e 31 virtual void setPixelColor(uint16_t n, uint32_t c);
heroic 26:98163818a82e 32 virtual uint16_t numPixels(void);
heroic 26:98163818a82e 33 virtual uint32_t Color(uint8_t, uint8_t, uint8_t);
heroic 26:98163818a82e 34 virtual uint32_t total_luminance(void);
heroic 26:98163818a82e 35 friend class SD600ASupervisor;
heroic 26:98163818a82e 36
heroic 26:98163818a82e 37 private:
heroic 26:98163818a82e 38 void write(uint8_t byte);
heroic 26:98163818a82e 39 uint8_t *pixels; // Holds LED color values; also, SPI buffer.
heroic 26:98163818a82e 40 uint32_t data_length; // used by SPI ISR
heroic 26:98163818a82e 41 uint32_t bit_index; // used by SPI ISR
heroic 26:98163818a82e 42 uint32_t byte_index;
heroic 26:98163818a82e 43 uint16_t numLEDs; // Number of RGB LEDs in strand
heroic 26:98163818a82e 44 DigitalOut dat;
heroic 26:98163818a82e 45 DigitalOut clk;
heroic 26:98163818a82e 46
heroic 26:98163818a82e 47 };
heroic 26:98163818a82e 48
heroic 26:98163818a82e 49 class SD600ASupervisor {
heroic 26:98163818a82e 50 public:
heroic 26:98163818a82e 51 SD600ASupervisor(void);
heroic 26:98163818a82e 52 virtual void add(SD600A *strip);
heroic 26:98163818a82e 53 private:
heroic 26:98163818a82e 54 uint32_t data_length; // used by SPI ISR
heroic 26:98163818a82e 55 uint32_t bit_index; // used by SPI ISR
heroic 26:98163818a82e 56 uint32_t byte_index;
heroic 26:98163818a82e 57
heroic 26:98163818a82e 58 uint32_t numstrips;
heroic 26:98163818a82e 59 SD600A *strips[8];
heroic 26:98163818a82e 60 Ticker idletoggle;
heroic 26:98163818a82e 61 void spi_isr(void);
heroic 26:98163818a82e 62 };
ehbmbed2 0:12e734116fea 63 #endif