void N6100LCD::set_pixel(uint8_t x, uint8_t y, uint16_t color)
{
set_area(x, y, x, y);
spi_data((color >> 4) & 0xFF);
spi_data(((color & 0x0F) << 4));
spi_cmd(NOP);
spi_flush();
}
void wm8737_spi_init(void) {
LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 11);
/* Set DSS data to 16-bit, Frame format SPI, CPOL = 1, CPHA = 1, and SCR is 0 */
LPC_SPI0->CR0 = 0x00CF;
/* This mode is rising-edge sampled, which is what the ADC wants. */
/* SSPCPSR clock prescale register, master mode, minimum divisor is 0x02 */
LPC_SPI0->CPSR = 0x2;
/* This gives a clock rate of 6MHz! */
spi_flush();
}
void N6100LCD::draw_hline(uint16_t c, uint8_t x, uint8_t y, uint8_t width)
{
if (width<1 || width>ROW_LENGTH) return;
set_area(x, y, x+width-1, y);
for (uint8_t i=0; i<width; ) {
i += 2;
spi_data(( c&0xFF0)>>4); // R1G1
spi_data(((c&0x00F)<<4)|((c&0xF00)>>8)); // B1R2
spi_data( c&0x0FF ); // G2B2
}
spi_flush();
}
void do_sampling(void) {
/* ADC LR Clock on P0[2], rising edge is trigger */
LPC_IOCON->PIO0_2 &= ~0x07; /* GPIO */
LPC_GPIO0->MASKED_ACCESS[1<<2] = (0<<2); /* Low to start */
LPC_GPIO0->DIR |= (1<<2); /* Output */
/* Setup SPI for the ADC transfer */
wm8737_spi_init();
wm8737_spi_on();
/**
* Disable all interrupts - Be careful that the watchdog
* calibration timer doesn't occur during this period
*/
__disable_irq();
/* We need to use a function pointer to jump our execution to RAM */
sampling_func sampling_ptr = sampling;
/* Prepare for the sampling loop */
sampling_index = 0;
/* Let RAM accesses settle down before we jump */
__NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP();
/* Actually take the sample */
sampling_ptr();
LPC_GPIO0->MASKED_ACCESS[1<<2] = (1<<2); /* P0[2] = ADCLRCLK */
/* Tidy up from the sampling run */
spi_flush();
/* Re-enable all interrupts */
__enable_irq();
/* Return the SPI to how it was before */
wm8737_spi_off();
/**
* Revert the SPI bus to working for the radio.
*/
radio_spi_init();
}
void writeData(uint8_t d)
{
if (!g_HWSPI)
{
bbData(d);
return;
}
memory_barrier();
gpio_set(PIN_DC);
gpio_clear(24);
memory_barrier();
pack.command = 0x100 | d; // LoSSI 9-bit Parameter mode
spi_start(0); // Start SPI transfer to CS0 destination
// Bypass spi_write function here
//while (!HW.SPI0.CS.B.TXD); // ensure no reads
//HW.SPI0.FIFO = pack.command;
spi_write(d);
spi_flush();
memory_barrier();
gpio_set(24);
memory_barrier();
//printf("Data:%.2X \n",pack.command);
}
void writeCommand(uint8_t c)
{
if (!g_HWSPI)
{
bbCmd(c);
return;
}
memory_barrier();
gpio_clear(PIN_DC);
gpio_clear(24);
memory_barrier();
pack.command = 0x000 | c; // LoSSI 9-bit Command mode
spi_start(0); // Start SPI transfer to CS0 destination
// Bypass spi_write function here
//while (!HW.SPI0.CS.B.TXD); // ensure no reads
//HW.SPI0.FIFO = pack.command;
spi_write(c) ;
spi_flush();
memory_barrier();
gpio_set(24);
memory_barrier();
printf("Command:%.2X ",pack.command);
}
int N6100LCD::init(void)
{
if (MAP_FAILED==gpio_ && gpio_init() < 0) {
DBG("gpio init failed\n");
return -1;
}
if (spi_ < 0 && spi_init() < 0) {
DBG("spi init failed\n");
return -1;
}
DBG("gpio = %X\n", gpio_);
DBG("spi = %d\n", spi_);
INP_GPIO(rst_);
OUT_GPIO(rst_);
GPIO_CLR(rst_);
usleep(200*1000);
GPIO_SET(rst_);
usleep(200*1000);
if (type_ == TYPE_EPSON) {
spi_cmd(DISCTL); // Display control (0xCA)
spi_data(0x0C); // 12 = 1100 - CL dividing ratio [don't divide] switching period 8H (default)
spi_data(0x20); // nlines/4 - 1 = 132/4 - 1 = 32 duty
spi_data(0x00); // No inversely highlighted lines
spi_cmd(COMSCN); // common scanning direction (0xBB)
spi_data(0x01); // 1->68, 132<-69 scan direction
spi_cmd(OSCON); // internal oscialltor ON (0xD1)
spi_cmd(SLPOUT); // sleep out (0x94)
spi_cmd(PWRCTR); // power ctrl (0x20)
spi_data(0x0F); // everything on, no external reference resistors
spi_cmd(DISINV); // invert display mode (0xA7)
spi_cmd(DATCTL); // data control (0xBC)
spi_data(0x03); // Inverse page address, reverse rotation column address, column scan-direction !!! try 0x01
spi_data(0x00); // normal RGB arrangement
spi_data(0x02); // 16-bit Grayscale Type A (12-bit color)
spi_cmd(VOLCTR); // electronic volume, this is the contrast/brightness (0x81)
spi_data(32); // volume (contrast) setting - fine tuning, original (0-63)
spi_data(3); // internal resistor ratio - coarse adjustment (0-7)
spi_cmd(NOP);
usleep(100 * 1000);
spi_cmd(DISON); // display on (0xAF)
} else if (type_ == TYPE_PHILIPS) {
spi_cmd(SLEEPOUT); // Sleep Out (0x11)
spi_cmd(BSTRON); // Booster voltage on (0x03)
spi_cmd(DISPON); // Display on (0x29)
//spi_cmd(INVON); // Inversion on (0x20)
// 12-bit color pixel format:
spi_cmd(COLMOD); // Color interface format (0x3A)
spi_data(0x03); // 0b011 is 12-bit/pixel mode
spi_cmd(MADCTL); // Memory Access Control(PHILLIPS)
//spi_data(0x08);
spi_data(0xC0);
spi_cmd(SETCON); // Set Contrast(PHILLIPS)
spi_data(0x3E);
spi_cmd(NOPP); // nop(PHILLIPS)
}
spi_flush();
DBG("lcd init ok\n");
return 0;
}
void N6100LCD::spi_word(uint16_t word)
{
*pbuff++ = word;
if(++buffsz >= SPI_BUFF_SIZE) spi_flush();
}
