Pixy.h

00001 #ifndef TUIASI_PIXY_H
00002 #define TUIASI_PIXY_H
00003 
00004 #include "mbed.h"
00005 #include "PixyLinkSPI.h"
00006 #include "PixyLinkI2C.h"
00007 #include "PixyLinkUART.h"
00008 
00009 struct Block {
00010     void print(Serial &pc) {
00011         pc.printf("sig: %d x: %d y: %d width: %d height: %d\n", signature, x, y, width, height);
00012     };
00013     uint16_t signature;
00014     uint16_t x;
00015     uint16_t y;
00016     uint16_t width;
00017     uint16_t height;
00018 };
00019 
00020 class Pixy
00021 {
00022 public:
00023     enum LinkType {SPI, I2C, UART};
00024     Pixy(LinkType linkType, PinName mosi_sda_tx, PinName miso_scl_rx, PinName sclk = NC);
00025     Pixy(PinName tx, PinName rx);
00026     ~Pixy();
00027     uint16_t getBlocks(uint16_t maxBlocks=1000);
00028     int8_t setServos(uint16_t s0, uint16_t s1);
00029     void setAddress(uint8_t addr);
00030     void setSerialOutput(Serial *pc);
00031 
00032     Block *blocks;
00033 
00034 private:
00035     static const uint8_t PIXY_INITIAL_ARRAYSIZE = 30;
00036     static const uint8_t PIXY_MAXIMUM_ARRAYSIZE = 130;
00037     static const uint16_t PIXY_START_WORD = 0xaa55;
00038     static const uint16_t PIXY_START_WORDX = 0x55aa;
00039     static const uint8_t PIXY_DEFAULT_ADDR = 0x54;  // I2C
00040 
00041     bool getStart();
00042     void resize();
00043 
00044     bool skipStart;
00045     uint16_t blockCount;
00046     uint16_t blockArraySize;
00047 
00048     PixyLink *m_link;
00049     Serial *pc;
00050 };
00051 #endif //TUIASI_PIXY_H