/
hx8347g.cpp
139 lines (122 loc) · 4.42 KB
/
hx8347g.cpp
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// IMPORTANT: LIBRARY MUST BE SPECIFICALLY CONFIGURED FOR EITHER TFT SHIELD
// OR BREAKOUT BOARD USAGE. SEE RELEVANT COMMENTS IN Adafruit_TFTLCD.h
// Graphics library by ladyada/adafruit with init code from Rossum
// MIT license
#include "Adafruit_TFTLCD_8bit_STM32.h"
//#include "pin_magic.h"
#include "hx8347g.h"
/*****************************************************************************/
static const uint8_t HX8347G_regValues[] PROGMEM = {
0x2E , 0x89,
0x29 , 0x8F,
0x2B , 0x02,
0xE2 , 0x00,
0xE4 , 0x01,
0xE5 , 0x10,
0xE6 , 0x01,
0xE7 , 0x10,
0xE8 , 0x70,
0xF2 , 0x00,
0xEA , 0x00,
0xEB , 0x20,
0xEC , 0x3C,
0xED , 0xC8,
0xE9 , 0x38,
0xF1 , 0x01,
// skip gamma, do later
0x1B , 0x1A,
0x1A , 0x02,
0x24 , 0x61,
0x25 , 0x5C,
0x18 , 0x36,
0x19 , 0x01,
0x1F , 0x88,
TFTLCD_DELAY , 5 , // delay 5 ms
0x1F , 0x80,
TFTLCD_DELAY , 5 ,
0x1F , 0x90,
TFTLCD_DELAY , 5 ,
0x1F , 0xD4,
TFTLCD_DELAY , 5 ,
0x17 , 0x05,
0x36 , 0x09,
0x28 , 0x38,
TFTLCD_DELAY , 40 ,
0x28 , 0x3C,
0x02 , 0x00,
0x03 , 0x00,
0x04 , 0x00,
0x05 , 0xEF,
0x06 , 0x00,
0x07 , 0x00,
0x08 , 0x01,
0x09 , 0x3F
};
/*****************************************************************************/
// Unlike the 932X drivers that set the address window to the full screen
// by default (using the address counter for drawPixel operations), the
// 7575 needs the address window set on all graphics operations. In order
// to save a few register writes on each pixel drawn, the lower-right
// corner of the address window is reset after most fill operations, so
// that drawPixel only needs to change the upper left each time.
/*****************************************************************************/
void hx8347g_setLR(void)
{
writeRegisterPair(HX8347G_COLADDREND_HI, HX8347G_COLADDREND_LO, TFTWIDTH - 1);
writeRegisterPair(HX8347G_ROWADDREND_HI, HX8347G_ROWADDREND_LO, TFTHEIGHT - 1);
}
/*****************************************************************************/
void hx8347g_begin(void)
{
uint8_t a, d, i = 0;
CS_ACTIVE;
while(i < sizeof(HX8347G_regValues)) {
a = pgm_read_byte(&HX8347G_regValues[i++]);
d = pgm_read_byte(&HX8347G_regValues[i++]);
if(a == TFTLCD_DELAY) delay(d);
else writeRegister8(a, d);
}
hx8347g_setRotation(0);
hx8347g_setLR(); // Lower-right corner of address window
}
/*****************************************************************************/
// Sets the LCD address window (and address counter, on 932X).
// Relevant to rect/screen fills and H/V lines. Input coordinates are
// assumed pre-sorted (e.g. x2 >= x1).
/*****************************************************************************/
void hx8347g_setAddrWindow(int x1, int y1, int x2, int y2)
{
writeRegisterPair(HX8347G_COLADDRSTART_HI, HX8347G_COLADDRSTART_LO, x1);
writeRegisterPair(HX8347G_ROWADDRSTART_HI, HX8347G_ROWADDRSTART_LO, y1);
writeRegisterPair(HX8347G_COLADDREND_HI , HX8347G_COLADDREND_LO , x2);
writeRegisterPair(HX8347G_ROWADDREND_HI , HX8347G_ROWADDREND_LO , y2);
}
/*****************************************************************************/
void hx8347g_fillScreen(uint16_t color)
{
}
/*****************************************************************************/
void hx8347g_drawPixel(int16_t x, int16_t y, uint16_t color)
{
}
/*****************************************************************************/
void hx8347g_setRotation(uint8_t x)
{
uint8_t t;
switch(x) {
default: t = 0 ; break;
case 1 : t = 0x60; break;
case 2 : t = 0xc0; break;
case 3 : t = 0xa0; break;
}
writeRegister8(HX8347G_MEMACCESS, t);
// 7575 has to set the address window on most drawing operations.
// drawPixel() cheats by setting only the top left...by default,
// the lower right is always reset to the corner.
hx8347g_setLR(); // CS_IDLE happens here
}
/*****************************************************************************/
uint16_t hx8347g_readPixel(int16_t x, int16_t y)
{
return 0;
}