Adafruit_IS31FL3731.cpp

00001 #include "Adafruit_IS31FL3731.h"
00002 #include "Adafruit_GFX.h"
00003 #ifndef _swap_int16_t
00004 #define _swap_int16_t(a, b) { int16_t t = a; a = b; b = t; }
00005 #endif
00006 
00007 bool Adafruit_IS31FL3731::begin(uint8_t addr) {
00008 
00009   _i2caddr = addr;
00010   _frame = 0;
00011 
00012   // shutdown
00013   writeRegister8(ISSI_BANK_FUNCTIONREG, ISSI_REG_SHUTDOWN, 0x00);
00014 
00015   //delay(10);
00016   wait(0.01);
00017 
00018 
00019   // out of shutdown
00020   writeRegister8(ISSI_BANK_FUNCTIONREG, ISSI_REG_SHUTDOWN, 0x01);
00021 
00022   // picture mode
00023   writeRegister8(ISSI_BANK_FUNCTIONREG, ISSI_REG_CONFIG, ISSI_REG_CONFIG_PICTUREMODE);
00024 
00025   displayFrame(_frame);
00026 
00027   // all LEDs on & 0 PWM
00028   clear(); // set each led to 0 PWM
00029 
00030   for (uint8_t f=0; f<8; f++) {  
00031     for (uint8_t i=0; i<=0x11; i++)
00032       writeRegister8(f, i, 0xff);     // each 8 LEDs on
00033   }
00034 
00035   audioSync(false);
00036 
00037   return true;
00038 }
00039 
00040 void Adafruit_IS31FL3731::clear(void) {
00041   // all LEDs on & 0 PWM
00042 
00043   selectBank(_frame);
00044   
00045   uint8_t nemo[24] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
00046 
00047   for (uint8_t i=0; i<6; i++) {
00048     // write 24 bytes at once
00049     myI2C->writeBytes(_i2caddr, 0x24+i*24, 24, nemo);
00050   }
00051 }
00052 
00053 void Adafruit_IS31FL3731::setLEDPWM(uint8_t lednum, uint8_t pwm, uint8_t bank) {
00054   if (lednum >= 144) return;
00055   writeRegister8(bank, 0x24+lednum, pwm);
00056 }
00057 
00058 
00059 void Adafruit_IS31FL3731_Wing::drawPixel(int16_t x, int16_t y, uint16_t color) {
00060   switch (getRotation()) {
00061   case 1:
00062     _swap_int16_t(x, y);
00063     x = 15 - x - 1;
00064     break;
00065   case 2:
00066     x = 15 - x - 1;
00067     y = 7 - y - 1;
00068     break;
00069   case 3:
00070     _swap_int16_t(x, y);
00071     y = 9 - y - 1;
00072     break;
00073   }
00074 
00075   // charlie wing is smaller:
00076   if ((x < 0) || (x >= 16) || (y < 0) || (y >= 7)) return;
00077 
00078   if (x > 7) {
00079     x=15-x;
00080     y += 8;
00081   } else {
00082     y = 7-y;
00083   }
00084 
00085   _swap_int16_t(x, y);
00086  
00087   if (color > 255) color = 255; // PWM 8bit max
00088 
00089   setLEDPWM(x + y*16, color, _frame);
00090   return;
00091 }
00092 
00093 
00094 
00095 void Adafruit_IS31FL3731::drawPixel(int16_t x, int16_t y, uint16_t color) {
00096  // check rotation, move pixel around if necessary
00097   switch (getRotation()) {
00098   case 1:
00099     _swap_int16_t(x, y);
00100     x = 16 - x - 1;
00101     break;
00102   case 2:
00103     x = 16 - x - 1;
00104     y = 9 - y - 1;
00105     break;
00106   case 3:
00107     _swap_int16_t(x, y);
00108     y = 9 - y - 1;
00109     break;
00110   }
00111 
00112   if ((x < 0) || (x >= 16)) return;
00113   if ((y < 0) || (y >= 9)) return;
00114   if (color > 255) color = 255; // PWM 8bit max
00115 
00116   setLEDPWM(x + y*16, color, _frame);
00117   return;
00118 }
00119 
00120 void Adafruit_IS31FL3731::setFrame(uint8_t f) {
00121   _frame = f;
00122 }
00123 
00124 void Adafruit_IS31FL3731::displayFrame(uint8_t f) {
00125   if (f > 7) f = 0;
00126   writeRegister8(ISSI_BANK_FUNCTIONREG, ISSI_REG_PICTUREFRAME, f);
00127 }
00128 
00129 
00130 void Adafruit_IS31FL3731::selectBank(uint8_t b) {
00131  myI2C->writeByte(_i2caddr, ISSI_COMMANDREGISTER, b);
00132 }
00133 
00134 void Adafruit_IS31FL3731::audioSync(bool sync) {
00135   if (sync) {
00136     writeRegister8(ISSI_BANK_FUNCTIONREG, ISSI_REG_AUDIOSYNC, 0x1);
00137   } else {
00138     writeRegister8(ISSI_BANK_FUNCTIONREG, ISSI_REG_AUDIOSYNC, 0x0);
00139   }
00140 }
00141 
00142 /*************/
00143 void Adafruit_IS31FL3731::writeRegister8(uint8_t b, uint8_t reg, uint8_t data) {
00144   selectBank(b);
00145   
00146    myI2C->writeByte(_i2caddr, reg, data);
00147 }
00148 
00149 uint8_t  Adafruit_IS31FL3731::readRegister8(uint8_t bank, uint8_t reg) {
00150  uint8_t x;
00151  //uint8_t status;
00152 
00153  selectBank(bank);
00154 
00155  //status =  
00156  myI2C->readByte(_i2caddr, reg, &x);
00157 
00158   return x;
00159 }