void MI0283QT2::begin(uint_least8_t clock_div)
{
//init pins
#if defined(RST_PIN)
pinMode(RST_PIN, OUTPUT);
RST_ENABLE();
#endif
pinMode(LED_PIN, OUTPUT);
pinMode(CS_PIN, OUTPUT);
pinMode(CLK_PIN, OUTPUT);
pinMode(MOSI_PIN, OUTPUT);
pinMode(MISO_PIN, INPUT);
LED_DISABLE();
CS_DISABLE();
#if defined(ADS7846)
pinMode(ADSCS_PIN, OUTPUT);
ADSCS_DISABLE();
#endif
#if !defined(SOFTWARE_SPI)
SPI.setDataMode(SPI_MODE0);
SPI.setBitOrder(MSBFIRST);
SPI.setClockDivider(clock_div);
SPI.begin();
#endif
//reset display
reset(clock_div);
//enable backlight
led(50);
return;
}
void MI0283QT9::begin(uint_least8_t clock_div)
{
//init pins
#if defined(RST_PIN)
pinMode(RST_PIN, OUTPUT);
RST_ENABLE();
#endif
pinMode(LED_PIN, OUTPUT);
pinMode(CS_PIN, OUTPUT);
#if defined(LCD_8BIT_SPI)
pinMode(RS_PIN, OUTPUT);
RS_HIGH();
#endif
pinMode(SCK_PIN, OUTPUT);
pinMode(MOSI_PIN, OUTPUT);
pinMode(MISO_PIN, INPUT);
LED_DISABLE();
CS_DISABLE();
#if defined(ADS7846)
pinMode(ADSCS_PIN, OUTPUT);
ADSCS_DISABLE();
#endif
#if !defined(SOFTWARE_SPI)
lcd_clock_div = clock_div;
SPI.setDataMode(SPI_MODE0);
SPI.setBitOrder(MSBFIRST);
//SPI.setClockDivider(clock_div);
SPI.begin();
#endif
//SPI speed-down
#if !defined(SOFTWARE_SPI)
# if F_CPU >= 128000000UL
SPI.setClockDivider(SPI_CLOCK_DIV64);
# elif F_CPU >= 64000000UL
SPI.setClockDivider(SPI_CLOCK_DIV32);
# elif F_CPU >= 32000000UL
SPI.setClockDivider(SPI_CLOCK_DIV16);
# elif F_CPU >= 16000000UL
SPI.setClockDivider(SPI_CLOCK_DIV8);
# else //elif F_CPU >= 8000000UL
SPI.setClockDivider(SPI_CLOCK_DIV4);
# endif
#endif
//reset display
reset();
//SPI speed-up
#if !defined(SOFTWARE_SPI)
SPI.setClockDivider(clock_div);
#endif
//enable backlight
led(50);
return;
}
uint_least8_t MI0283QT9::touchRead(void)
{
#if defined(ADS7846)
uint_least8_t p, a1, a2, b1, b2;
uint_least16_t x, y;
//SPI speed-down
#if !defined(SOFTWARE_SPI) && defined(__AVR__)
uint_least8_t spcr, spsr;
spcr = SPCR;
spsr = SPSR;
# if F_CPU >= 16000000UL
SPI.setClockDivider(SPI_CLOCK_DIV8);
# elif F_CPU >= 8000000UL
SPI.setClockDivider(SPI_CLOCK_DIV4);
# else //elif F_CPU >= 4000000UL
SPI.setClockDivider(SPI_CLOCK_DIV2);
# endif
#endif
//get pressure
ADSCS_ENABLE();
wr_spi(ADS_CMD_START | ADS_CMD_8BIT | ADS_CMD_DIFF | ADS_CMD_Z1_POS);
a1 = rd_spi()&0x7F;
wr_spi(ADS_CMD_START | ADS_CMD_8BIT | ADS_CMD_DIFF | ADS_CMD_Z2_POS);
b1 = (255-rd_spi())&0x7F;
ADSCS_DISABLE();
p = a1 + b1;
if(p > MIN_PRESSURE)
{
/*//using 4 samples for x and y position
for(x=0, y=0, i=4; i!=0; i--)
{
ADSCS_ENABLE();
//get X data
wr_spi(ADS_CMD_START | ADS_CMD_12BIT | ADS_CMD_DIFF | ADS_CMD_X_POS);
a = rd_spi();
b = rd_spi();
x += 1023-((a<<2)|(b>>6)); //12bit: ((a<<4)|(b>>4)) //10bit: ((a<<2)|(b>>6))
//get Y data
wr_spi(ADS_CMD_START | ADS_CMD_12BIT | ADS_CMD_DIFF | ADS_CMD_Y_POS);
a = rd_spi();
b = rd_spi();
y += ((a<<2)|(b>>6)); //12bit: ((a<<4)|(b>>4)) //10bit: ((a<<2)|(b>>6))
ADSCS_DISABLE();
}
x >>= 2; //x/4
y >>= 2; //y/4*/
//using 2 samples for x and y position
ADSCS_ENABLE();
//get X data
wr_spi(ADS_CMD_START | ADS_CMD_12BIT | ADS_CMD_DIFF | ADS_CMD_X_POS);
a1 = rd_spi();
b1 = rd_spi();
wr_spi(ADS_CMD_START | ADS_CMD_12BIT | ADS_CMD_DIFF | ADS_CMD_X_POS);
a2 = rd_spi();
b2 = rd_spi();
if(a1 == a2)
{
x = 1023-((a2<<2)|(b2>>6)); //12bit: ((a<<4)|(b>>4)) //10bit: ((a<<2)|(b>>6))
//get Y data
wr_spi(ADS_CMD_START | ADS_CMD_12BIT | ADS_CMD_DIFF | ADS_CMD_Y_POS);
a1 = rd_spi();
b1 = rd_spi();
wr_spi(ADS_CMD_START | ADS_CMD_12BIT | ADS_CMD_DIFF | ADS_CMD_Y_POS);
a2 = rd_spi();
b2 = rd_spi();
if(a1 == a2)
{
y = ((a2<<2)|(b2>>6)); //12bit: ((a<<4)|(b>>4)) //10bit: ((a<<2)|(b>>6))
if(x && y)
{
tp_x = x;
tp_y = y;
}
lcd_z = p;
}
