/* LTV250QV panel functions */ static void lcd_write_reg(unsigned char reg, unsigned short val) { unsigned char block[3] = {LTV_OPC_INDEX, 0, reg | 0xFF}; spi_block_transfer(SPI_target_LTV250QV, block, sizeof(block), NULL, 0); block[0] = LTV_OPC_DATA; block[1] = val >> 8; block[2] = val & 0xFF; spi_block_transfer(SPI_target_LTV250QV, block, sizeof(block), NULL, 0); }
static void _backlight_write_brightness(int brightness) { uint8_t bl_command[] = {0xA4, 0x00, brightness, 0xA4}; spi_block_transfer(SPI_target_BACKLIGHT, commands[8], 2, (char *)&read_brightness, 2); // bl_command[3] = (char) read_brightness; spi_block_transfer(SPI_target_BACKLIGHT, bl_command, 4, 0, 0); }
void tsc2100_writereg(int page, int address, short value) { unsigned short command = (page << 11)|(address << 5); unsigned char out[4] = {command >> 8, command & 0xff, value >> 8, value & 0xff}; spi_block_transfer(SPI_target_TSC2100, out, sizeof(out), NULL, 0); }
static void lcd_display_off(void) { /* LQV shutdown sequence */ lcd_write_reg(LTV_PWRCTL1, (LTV_VCOMOUT_ENABLE | LTV_DRIVE_CURRENT(5) | LTV_SUPPLY_CURRENT(5))); sleep_ms(20); lcd_write_reg(LTV_PWRCTL1, (LTV_DRIVE_CURRENT(5) | LTV_SUPPLY_CURRENT(5))); lcd_write_reg(LTV_GATECTL2, (LTV_NW_INV_1LINE | LTV_FTI(3) | LTV_FWI(3))); lcd_write_reg(LTV_PWRCTL2, 0); sleep_ms(20); lcd_write_reg(LTV_PWRCTL1, 0); sleep_ms(10); unsigned char temp[1]; temp[0] = 0; spi_block_transfer(SPI_target_LTV250QV, temp, sizeof(temp), NULL, 0); IO_GIO_BITCLR2 = (1 << 4); sleep_ms(5); IO_GIO_BITCLR2 = (1 << 7); sleep_ms(5); IO_GIO_BITCLR2 = (1 << 0); sleep_ms(2); IO_GIO_BITCLR2 = (1 << 8); IO_GIO_BITCLR2 = (1 << 5); /* Disable main power */ IO_GIO_BITCLR2 |= (1 << 3); enable_venc(false); lcd_on = false; }
short tsc2100_readreg(int page, int address) { unsigned short command = 0x8000|(page << 11)|(address << 5); unsigned char out[] = {command >> 8, command & 0xff}; unsigned char in[2]; spi_block_transfer(SPI_target_TSC2100, out, sizeof(out), in, sizeof(in)); return (in[0]<<8)|in[1]; }
void tsc2100_read_data(void) { int page = 0, address = 0; unsigned int i; unsigned short command = 0x8000|(page << 11)|(address << 5); unsigned char out[] = {command >> 8, command & 0xff}; unsigned char *p_adc_data=(unsigned char *)&adc_data; adc_status|=tsc2100_readreg(TSSTAT_PAGE, TSSTAT_ADDRESS); spi_block_transfer(SPI_target_TSC2100, out, sizeof(out), (char *)adc_data, sizeof(adc_data)); for(i=0; i<sizeof(adc_data); i+=2) adc_data[i>>1]=(short)(p_adc_data[i]<<8|p_adc_data[i+1]); }
bool backlight_hw_init(void) { short read_value; IO_GIO_BITCLR2 = (1 << 5); /* output low (backlight/lcd on) */ spi_block_transfer(SPI_target_BACKLIGHT, commands[6], 2, 0, 0); spi_block_transfer(SPI_target_BACKLIGHT, commands[8], 2, (char*)&read_value, 2); if( (read_value & 0xFF) < 0xD0 ) { spi_block_transfer(SPI_target_BACKLIGHT, commands[3], 2, 0, 0); spi_block_transfer(SPI_target_BACKLIGHT, commands[4], 2, 0, 0); spi_block_transfer(SPI_target_BACKLIGHT, commands[9], 2, 0, 0); spi_block_transfer(SPI_target_BACKLIGHT, commands[0], 2, 0, 0); } spi_block_transfer(SPI_target_BACKLIGHT, commands[2], 2, 0, 0); backlight_hw_brightness(backlight_brightness); return true; }