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PCF8814.h
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/* ************************************************************************
*
* PCF8814 graphic display controller
*
* (c) 2019 by Markus Reschke
*
* ************************************************************************ */
/* ************************************************************************
* I2C
* ************************************************************************ */
/*
* I2C slave addreses
*/
#define PCF8814_I2C_ADDR_0 0b00111100 /* SA1=0 SA0=0 0x3c */
#define PCF8814_I2C_ADDR_1 0b00111101 /* SA1=0 SA0=1 0x3d */
#define PCF8814_I2C_ADDR_2 0b00111110 /* SA1=1 SA0=0 0x3e */
#define PCF8814_I2C_ADDR_3 0b00111111 /* SA1=1 SA0=1 0x3f */
/*
* I2C master code
* - send in standard or fast mode to enable high speed mode
* - frame: <start><master code><not-acknowledge>
*/
#define LCD_MASTER_CODE 0b00001000 /* master code */
/*
* I2C control byte
*/
#define LCD_CONTROL_BYTE 0b00000000 /* 0x00 */
/* continuation flag */
#define FLAG_CTRL_MULTI 0b00000000 /* stream of bytes follows */
#define FLAG_CTRL_SINGLE 0b10000000 /* only 1 byte follows */
/* D/C */
#define FLAG_CTRL_CMD 0b00000000 /* command follows */
#define FLAG_CTRL_DATA 0b01000000 /* data follows */
/* ************************************************************************
* LCD commands
* ************************************************************************ */
/*
* horizontal addressing: set lower nibble of column address (bits 0-3)
* - valid range: 0 - 15 (both nibbles 0 - 95)
*/
#define CMD_COLUMN_L 0b00000000 /* set lower nibble column address */
/*
* horizontal addressing: set upper nibble of column address (bits 4-6)
* - valid range: 0 - 7 (both nibbles 0 - 95)
*/
#define CMD_COLUMN_H 0b00010000 /* set upper nibble of column address */
/*
* power control
* - charge pump
*/
#define CMD_PWR_CONTROL 0b00101000 /* set power control */
/* charge pump */
#define FLAG_PWR_OFF 0b00000000 /* off */
#define FLAG_PWR_ON 0b00000100 /* on */
/*
* set bias
*/
#define CMD_BIAS 0b00110000 /* set bias */
/* alpha */
#define FLAG_BIAS_015 0b00000000 /* 0.15 */
#define FLAG_BIAS_030 0b00000001 /* 0.30 */
#define FLAG_BIAS_045 0b00000010 /* 0.45 */
#define FLAG_BIAS_060 0b00000011 /* 0.60 */
#define FLAG_BIAS_075 0b00000100 /* 0.75 */
#define FLAG_BIAS_090 0b00000101 /* 0.90 */
#define FLAG_BIAS_105 0b00000110 /* 1.05 */
#define FLAG_BIAS_135 0b00000111 /* 1.35 */
/*
* charge pump multiplication factor
* - 2 byte command
*/
/* byte #1: command */
#define CMD_CHARGE_PUMP 0b00111101 /* set charge pump */
/* byte #2: multiplicator */
#define FLAG_CHARGE_PUMP_2 0b00000000 /* 2x */
#define FLAG_CHARGE_PUMP_3 0b00000001 /* 3x */
#define FLAG_CHARGE_PUMP_4 0b00000010 /* 4x */
#define FLAG_CHARGE_PUMP_5 0b00000011 /* 5x */
/*
* set initial display line
* - valid range: 0 - 63
*/
#define CMD_STARTLINE 0b01000000 /* set start row address */
/*
* adjust contrast setting (VOP): set upper nibble (bits 5-7)
* - valid range: 0 - 7 (both nibbles 0 - 255)
*/
#define CMD_VOP_H 0b00100000 /* set upper nibble of VOP */
/*
* adjust contrast setting (VOP): set lower nibble (bits 0-4)
* - valid range: 0 - 31 (both nibbles 0 - 255)
*/
#define CMD_VOP_L 0b10000000 /* set lower nibble of VOP */
/*
* set pixel mode: normal/all-on
*/
#define CMD_PIXEL_MODE 0b10100100 /* pixel mode */
#define FLAG_PIXEL_NORMAL 0b00000000 /* normal */
#define FLAG_PIXEL_ALL 0b00000001 /* all pixels on (default) */
/*
* set display mode: normal/inversed
*/
#define CMD_DISP_MODE 0b10100110 /* display normal/inversed */
#define FLAG_DISP_NORMAL 0b00000000 /* normal display */
#define FLAG_DISP_REVERSED 0b00000000 /* inversed display */
/*
* set display: on/off
*/
#define CMD_DISPLAY 0b10101110 /* display on/off */
#define FLAG_DISPLAY_OFF 0b00000000 /* display off */
#define FLAG_DISPLAY_ON 0b00000001 /* display on */
/*
* data order
*/
#define CMD_DATA_ORDER 0b10101000 /* set data order */
#define FLAG_DATA_LSB_TOP 0b00000000 /* LSB top, MSB bottom */
#define FLAG_DATA_MSB_TOP 0b00000001 /* MSB top, LSB bottom */
/*
* RAM addressing mode
*/
#define CMD_ADDR_MODE 0b10101010 /* set addressing mode */
#define FLAG_ADDR_HOR 0b00000000 /* horizontal addressing */
#define FLAG_ADDR_VER 0b00000001 /* vertical addressing */
/*
* partial display position (initial row)
* - 2 byte command
*/
/* byte #1: command */
#define CMD_PARTIAL_POS 0b10101100 /* set initial row */
/* byte #2: initial row */
#define FLAG_PARTIAL_ROW_00 0b00000000 /* row 0 */
#define FLAG_PARTIAL_ROW_08 0b00000001 /* row 8 */
#define FLAG_PARTIAL_ROW_16 0b00000010 /* row 16 */
#define FLAG_PARTIAL_ROW_24 0b00000011 /* row 24 */
#define FLAG_PARTIAL_ROW_32 0b00000100 /* row 32 */
#define FLAG_PARTIAL_ROW_40 0b00000101 /* row 40 */
#define FLAG_PARTIAL_ROW_48 0b00000110 /* row 48 */
#define FLAG_PARTIAL_ROW_56 0b00000111 /* row 56 */
/*
* n-line inversion
* - 2 byte command
*/
/* byte #1: command */
#define CMD_NLINE_INV 0b10101101 /* set n-line inversion */
/* byte #2: frame inversion and n-line */
/* frame inversion */
#define FLAG_FRAME_INV_OFF 0b00000000 /* disabled, n-line counter runs continously */
#define FLAG_FRAME_INV_ON 0b10000000 /* enabled, n-line counter reset */
/* n-line */
#define FLAG_NLINE_OFF 0b00000000 /* n-line inversion disabled */
#define FLAG_NLINE_02 0b00000001 /* invert every 2 rows */
/* ... */
#define FLAG_NLINE_DEFAULT 0b00001101 /* default value */
/* ... */
#define FLAG_NLINE_62 0b00011111 /* invert every 62 rows */
/*
* vertical addressing: set bank
* - valid range: 0 - 8
* - last bank is 1 pixel high
*/
#define CMD_BANK 0b10110000 /* set bank */
/*
* vertical mirroring
*/
#define CMD_VERT_MIRROR 0b11000000 /* set vertical mirroring */
#define FLAG_Y_MIRROR_OFF 0b00000000 /* mirroring disabled */
#define FLAG_Y_MIRROR_ON 0b00001000 /* mirroring enabled */
/*
* set partial display (mux rate)
*/
#define CMD_PARTIAL_DISP 0b11010000 /* set partial display */
/* mux rate */
#define FLAG_PARTIAL_MODE_65 0b00000000 /* 1:65 (default) */
#define FLAG_PARTIAL_MODE_56 0b00000001 /* 1:56 */
#define FLAG_PARTIAL_MODE_48 0b00000010 /* 1:48 */
#define FLAG_PARTIAL_MODE_40 0b00000011 /* 1:40 */
#define FLAG_PARTIAL_MODE_32 0b00000100 /* 1:32 */
#define FLAG_PARTIAL_MODE_24 0b00000101 /* 1:24 */
#define FLAG_PARTIAL_MODE_16 0b00000110 /* 1:16 */
#define FLAG_PARTIAL_MODE_08 0b00000111 /* 1:8 */
/*
* read ID 1
* - returns always 0
*/
#define CMD_READ_ID1 0b11011010 /* read ID 1 */
/*
* read ID 2
* - returns always 1
*/
#define CMD_READ_ID2 0b11011011 /* read ID 2 */
/*
* read ID 3
*/
#define CMD_READ_ID3 0b11011100 /* read ID 3 */
/*
* read ID 4
*/
#define CMD_READ_ID4 0b11011101 /* read ID 4 */
/*
* temperature sense (read temperature)
* - T = (1.875 * value - 40)°C
*/
#define CMD_READ_T 0b11011110 /* read temperature */
/*
* read voltage monitor
* - get status of charge pump
*/
#define CMD_READ_V_MONITOR 0b11011111 /* read voltage monitor */
/* charge pump status */
#define FLAG_CHARGE_PUMP_BAD 0b00000000 /* not working correctly */
#define FLAG_CHARGE_PUMP_OK 0b00000001 /* working correctly */
/*
* row control
*/
#define CMD_ROW_CONTROL 0b11100000 /* set row control */
/* bottom row swap */
#define FLAG_ROW_SWAP_OFF 0b00000000 /* bottom rows aren't mirrored (default) */
#define FLAG_ROW_SWAP_ON 0b00000001 /* bottom rows are mirrored */
/*
* software reset
*/
#define CMD_RESET 0b11100010 /* internal reset */
/*
* no operation (NOP)
*/
#define CMD_NOP 0b11100011 /* NOP */
/*
* display data length for 3-line SPI
* - 2 byte command
*/
/* byte #1: command */
#define CMD_DATA_LENGTH 0b11101000 /* set data length */
/* byte #2: 8-bit value */
/*
* temperature compensation: set TC slopes A and B
* - 2 byte command
*/
/* byte #1: command */
#define CMD_TC_SLOPES_AB 0b00111000 /* select slopes for A&B */
/* byte #2: slopes for A&B */
/* slope for segment A */
#define FLAG_TC_A_000 0b00000000 /* 0.00 0mV/K */
#define FLAG_TC_A_025 0b00000001 /* 0.25 -4mV/K */
#define FLAG_TC_A_050 0b00000010 /* 0.50 -8mV/K */
#define FLAG_TC_A_075 0b00000011 /* 0.75 -12mV/K */
#define FLAG_TC_A_100 0b00000100 /* 1.00 -16mV/K */
#define FLAG_TC_A_125 0b00000101 /* 1.25 -20mV/K */
#define FLAG_TC_A_175 0b00000110 /* 1.75 -24mV/K */
#define FLAG_TC_A_250 0b00000111 /* 2.50 -40mV/K */
/* slope for segment B */
#define FLAG_TC_B_000 0b00000000 /* 0.00 0mV/K */
#define FLAG_TC_B_025 0b00010000 /* 0.25 -4mV/K */
#define FLAG_TC_B_050 0b00100000 /* 0.50 -8mV/K */
#define FLAG_TC_B_075 0b00110000 /* 0.75 -12mV/K */
#define FLAG_TC_B_100 0b01000000 /* 1.00 -16mV/K */
#define FLAG_TC_B_125 0b01010000 /* 1.25 -20mV/K */
#define FLAG_TC_B_175 0b01100000 /* 1.75 -24mV/K */
#define FLAG_TC_B_250 0b01110000 /* 2.50 -40mV/K */
/*
* temperature compensation: set TC slopes C and D
* - 2 byte command
*/
/* byte #1: command */
#define CMD_TC_SLOPES_CD 0b00111001 /* select slopes for C&D */
/* byte #2: slopes for C&D */
/* slope for segment C */
#define FLAG_TC_C_000 0b00000000 /* 0.00 0mV/K */
#define FLAG_TC_C_025 0b00000001 /* 0.25 -4mV/K */
#define FLAG_TC_C_050 0b00000010 /* 0.50 -8mV/K */
#define FLAG_TC_C_075 0b00000011 /* 0.75 -12mV/K */
#define FLAG_TC_C_100 0b00000100 /* 1.00 -16mV/K */
#define FLAG_TC_C_125 0b00000101 /* 1.25 -20mV/K */
#define FLAG_TC_C_175 0b00000110 /* 1.75 -24mV/K */
#define FLAG_TC_C_250 0b00000111 /* 2.50 -40mV/K */
/* slope for segment D */
#define FLAG_TC_D_000 0b00000000 /* 0.00 0mV/K */
#define FLAG_TC_D_025 0b00010000 /* 0.25 -4mV/K */
#define FLAG_TC_D_050 0b00100000 /* 0.50 -8mV/K */
#define FLAG_TC_D_075 0b00110000 /* 0.75 -12mV/K */
#define FLAG_TC_D_100 0b01000000 /* 1.00 -16mV/K */
#define FLAG_TC_D_125 0b01010000 /* 1.25 -20mV/K */
#define FLAG_TC_D_175 0b01100000 /* 1.75 -24mV/K */
#define FLAG_TC_D_250 0b01110000 /* 2.50 -40mV/K */
/*
* temperature compensation: enable/disable TC
*/
#define CMD_TC_MODE 0b1110101 /* set TC mode */
#define FLAG_TC_OFF 0b0000000 /* disable TC */
#define FLAG_TC_ON 0b0000001 /* enable TC (default) */
/*
* oscillator selection
*/
#define CMD_OSCILLATOR 0b00111010 /* select oscillator */
#define FLAG_OSC_INT 0b00000000 /* internal oscillator (default) */
#define FLAG_OSC_EXT 0b00000001 /* external oscillator */
/*
* set factory defaults
*/
#define CMD_DEFAULTS 0b00111110 /* set factory defaults */
#define FLAG_DEFAULTS_OFF 0b00000000 /* disable defaults */
#define FLAG_DEFAULTS_ON 0b00000001 /* enable defaults */
/*
* frame frequency
* - 2 byte command
*/
/* byte #1: command */
#define CMD_FRAME_FREQ 0b11101111 /* set frame frequency */
/* byte #2: frame frequency */
#define FLAG_FRAME_FREQ_80 0b00000000 /* 80Hz (default) */
#define FLAG_FRAME_FREQ_70 0b00000001 /* 70Hz */
#define FLAG_FRAME_FREQ_60 0b00000010 /* 60Hz */
#define FLAG_FRAME_FREQ_40 0b00000011 /* 40Hz */
/*
* OTP programming
*/
#define CMD_OTP_PROG 0b11110000 /* set OTP mode */
#define FLAG_CAL_MODE_EXIT 0b00000000 /* exit calibration mode */
#define FLAG_CAL_MODE_ENTER 0b00000001 /* enter calibration mode */
#define FLAG_OTP_PROG_OFF 0b00000000 /* disable OTP programming */
#define FLAG_OTP_PROG_ON 0b00000010 /* enable OTP programming */
/*
* load 0: write 0 to OTP shift register
* - when in calibration mode
*/
#define CMD_LOAD_0 0b11011000 /* write 0 to OTP */
/*
* load 1: write 1 to OTP shift register
* - when in calibration mode
*/
#define CMD_LOAD_1 0b11011001 /* write 1 to OTP */
/*
* horizontal mirroring
* - pseudo command, treated as NOP
* - mirroring is set by PCF8814's MX pin
*/
#define CMD_HOR_MIRROR 0b10100000 /* set horizontal mirroring */
#define FLAG_X_MIRROR_OFF 0b00000000 /* mirroring disabled */
#define FLAG_X_MIRROR_ON 0b00000001 /* mirroring enabled */
/* ************************************************************************
* EOF
* ************************************************************************ */