acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
Arduino_HX8347D.cpp (3198B)
      1 /*
      2  * start rewrite from:
      3  * https://github.com/adafruit/Adafruit-GFX-Library.git
      4  */
      5 #include "Arduino_HX8347D.h"
      6 #include "SPI.h"
      7 
      8 Arduino_HX8347D::Arduino_HX8347D(
      9     Arduino_DataBus *bus, int8_t rst, uint8_t r,
     10     bool ips, int16_t w, int16_t h,
     11     uint8_t col_offset1, uint8_t row_offset1, uint8_t col_offset2, uint8_t row_offset2)
     12     : Arduino_TFT(bus, rst, r, ips, w, h, col_offset1, row_offset1, col_offset2, row_offset2)
     13 {
     14 }
     15 
     16 bool Arduino_HX8347D::begin(int32_t speed)
     17 {
     18 #if defined(__AVR__)
     19   _override_datamode = SPI_MODE0;
     20 #endif
     21 
     22   return Arduino_TFT::begin(speed);
     23 }
     24 
     25 // Companion code to the above tables.  Reads and issues
     26 // a series of LCD commands stored in PROGMEM byte array.
     27 void Arduino_HX8347D::tftInit()
     28 {
     29   if (_rst != GFX_NOT_DEFINED)
     30   {
     31     pinMode(_rst, OUTPUT);
     32     digitalWrite(_rst, HIGH);
     33     delay(100);
     34     digitalWrite(_rst, LOW);
     35     delay(HX8347D_RST_DELAY);
     36     digitalWrite(_rst, HIGH);
     37     delay(HX8347D_RST_DELAY);
     38   }
     39   else
     40   {
     41     // Software Rest
     42   }
     43 
     44   _bus->batchOperation(hx8347d_init_operations, sizeof(hx8347d_init_operations));
     45 
     46   if (_ips)
     47   {
     48     _bus->beginWrite();
     49     _bus->writeC8D8(0x01, 0x02);
     50     _bus->endWrite();
     51   }
     52 }
     53 
     54 void Arduino_HX8347D::writeAddrWindow(int16_t x, int16_t y, uint16_t w, uint16_t h)
     55 {
     56   if ((x != _currentX) || (w != _currentW))
     57   {
     58     int16_t x_start = x + _xStart, x_end = x + w - 1 + _xStart;
     59     _bus->writeC8D8(0x02, x_start >> 8);
     60     _bus->writeC8D8(0x03, x_start & 0xFF);
     61     _bus->writeC8D8(0x04, x_end >> 8);
     62     _bus->writeC8D8(0x05, x_end & 0xFF);
     63 
     64     _currentX = x;
     65     _currentW = w;
     66   }
     67   if ((y != _currentY) || (h != _currentH))
     68   {
     69     int16_t y_start = y + _yStart, y_end = y + h - 1 + _yStart;
     70     _bus->writeC8D8(0x06, y_start >> 8);
     71     _bus->writeC8D8(0x07, y_start & 0xFF);
     72     _bus->writeC8D8(0x08, y_end >> 8);
     73     _bus->writeC8D8(0x09, y_end & 0xFF);
     74 
     75     _currentY = y;
     76     _currentH = h;
     77   }
     78 
     79   _bus->writeCommand(0x22); // write to RAM
     80 }
     81 
     82 /**************************************************************************/
     83 /*!
     84     @brief   Set origin of (0,0) and orientation of TFT display
     85     @param   m  The index for rotation, from 0-3 inclusive
     86 */
     87 /**************************************************************************/
     88 void Arduino_HX8347D::setRotation(uint8_t r)
     89 {
     90   Arduino_TFT::setRotation(r);
     91   _bus->beginWrite();
     92   switch (_rotation)
     93   {
     94   case 1:
     95     _bus->writeC8D8(0x36, 0x03);
     96     _bus->writeC8D8(0x16, 0x20);
     97     break;
     98   case 2:
     99     _bus->writeC8D8(0x36, 0x07);
    100     _bus->writeC8D8(0x16, 0x00);
    101     break;
    102   case 3:
    103     _bus->writeC8D8(0x36, 0x07);
    104     _bus->writeC8D8(0x16, 0x60);
    105     break;
    106   default: // case 0:
    107     _bus->writeC8D8(0x36, 0x03);
    108     _bus->writeC8D8(0x16, 0x40);
    109     break;
    110   }
    111   _bus->endWrite();
    112 }
    113 
    114 void Arduino_HX8347D::invertDisplay(bool i)
    115 {
    116   _bus->beginWrite();
    117   if (_ips && i)
    118   {
    119     _bus->writeC8D8(0x01, 0x00);
    120   }
    121   else
    122   {
    123     _bus->writeC8D8(0x01, 0x02);
    124   }
    125   _bus->endWrite();
    126 }
    127 
    128 void Arduino_HX8347D::displayOn(void)
    129 {
    130   _bus->sendCommand(0x28);
    131   _bus->sendData(0x3C); // GON=1, DTE=1, D=11
    132 }
    133 
    134 void Arduino_HX8347D::displayOff(void)
    135 {
    136   _bus->sendCommand(0x28);
    137   _bus->sendData(0x34); // GON=1, DTE=1, D=01
    138   delay(40);
    139 }