diff -r 000000000000 -r 88d965579617 components/u8g2/csrc/u8x8_d_lc7981.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/components/u8g2/csrc/u8x8_d_lc7981.c Tue Oct 08 12:00:31 2019 +0200 @@ -0,0 +1,470 @@ +/* + + u8x8_d_lc7981.c + + Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/) + + Copyright (c) 2016, olikraus@gmail.com + All rights reserved. + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, this list + of conditions and the following disclaimer. + + * Redistributions in binary form must reproduce the above copyright notice, this + list of conditions and the following disclaimer in the documentation and/or other + materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR + CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + + +*/ +#include "u8x8.h" + + + + +/* no powersave mode for the LC7981 */ +// static const uint8_t u8x8_d_lc7981_powersave0_seq[] = { +// U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ +// U8X8_END_TRANSFER(), /* disable chip */ +// U8X8_END() /* end of sequence */ +// }; + +// static const uint8_t u8x8_d_lc7981_powersave1_seq[] = { +// U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ +// U8X8_END_TRANSFER(), /* disable chip */ +// U8X8_END() /* end of sequence */ +// }; + +/* no hardware flip for the LC7981 */ +// static const uint8_t u8x8_d_lc7981_flip0_seq[] = { +// U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ +// U8X8_END_TRANSFER(), /* disable chip */ +// U8X8_END() /* end of sequence */ +// }; + +// static const uint8_t u8x8_d_lc7981_flip1_seq[] = { +// U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ +// U8X8_END_TRANSFER(), /* disable chip */ +// U8X8_END() /* end of sequence */ +// }; + + +/* http://graphics.stanford.edu/~seander/bithacks.html */ +static uint8_t reverse_byte(uint8_t v) +{ + // if ( v != 0 && v != 255 ) does not help much + { + // swap odd and even bits + v = ((v >> 1) & 0x055) | ((v & 0x055) << 1); + // swap consecutive pairs + v = ((v >> 2) & 0x033) | ((v & 0x033) << 2); + // swap nibbles ... + v = ((v >> 4) & 0x00F) | ((v & 0x00F) << 4); + } + return v; +} + +static uint8_t u8x8_d_lc7981_common(u8x8_t *u8x8, uint8_t msg, U8X8_UNUSED uint8_t arg_int, void *arg_ptr) +{ + uint8_t c, i, j; + uint16_t y; + uint8_t *ptr; + switch(msg) + { + case U8X8_MSG_DISPLAY_DRAW_TILE: + y = (((u8x8_tile_t *)arg_ptr)->y_pos); + y*=8; + y*= u8x8->display_info->tile_width; + /* x = ((u8x8_tile_t *)arg_ptr)->x_pos; x is ignored... no u8x8 support */ + u8x8_cad_StartTransfer(u8x8); + /* + Tile structure is reused here for the t6963, however u8x8 is not supported + tile_ptr points to data which has cnt*8 bytes (same as SSD1306 tiles) + Buffer is expected to have 8 lines of code fitting to the t6963 internal memory + "cnt" includes the number of horizontal bytes. width is equal to cnt*8 + + x is assumed to be zero + + TODO: Consider arg_int, however arg_int is not used by u8g2 + */ + c = ((u8x8_tile_t *)arg_ptr)->cnt; /* number of tiles */ + ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr; /* data ptr to the tiles */ + for( i = 0; i < 8; i++ ) + { + u8x8_cad_SendCmd(u8x8, 0x0a ); /* display ram (cursor) address low byte */ + u8x8_cad_SendArg(u8x8, y&255); + u8x8_cad_SendCmd(u8x8, 0x0b ); /* display ram (cursor) address high byte */ + u8x8_cad_SendArg(u8x8, y>>8); + + u8x8_cad_SendCmd(u8x8, 0x0c ); /* write start */ + /* + The LC7981 has the MSB at the right position, which is exactly the opposite to the T6963. + Instead of writing a third hvline procedure for this device, we just revert the bytes before + transmit. This is slow because: + - the bit reverse itself + - the single byte transfer + The one byte is transmitted via SendArg, which is ok, because CAD = 100 + */ + for( j = 0; j < c; j++ ) + u8x8_cad_SendArg(u8x8, reverse_byte(*ptr++)); + + //u8x8_cad_SendData(u8x8, c, ptr); /* note: SendData can not handle more than 255 bytes, send one line of data */ + //ptr += u8x8->display_info->tile_width; + + y += u8x8->display_info->tile_width; + } + + u8x8_cad_EndTransfer(u8x8); + break; + /* handled in the calling procedure + case U8X8_MSG_DISPLAY_SETUP_MEMORY: + u8x8_d_helper_display_setup_memory(u8x8, &u8x8_lc7981_128x64_display_info); + break; + case U8X8_MSG_DISPLAY_INIT: + u8x8_d_helper_display_init(u8x8); + u8x8_cad_SendSequence(u8x8, u8x8_d_uc1701_dogs102_init_seq); + break; + */ + /* power save is not there... + case U8X8_MSG_DISPLAY_SET_POWER_SAVE: + if ( arg_int == 0 ) + u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_powersave0_seq); + else + u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_powersave1_seq); + break; + */ + /* hardware flip not is not available + case U8X8_MSG_DISPLAY_SET_FLIP_MODE: + if ( arg_int == 0 ) + { + u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_flip0_seq); + u8x8->x_offset = u8x8->display_info->default_x_offset; + } + else + { + u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_flip1_seq); + u8x8->x_offset = u8x8->display_info->flipmode_x_offset; + } + break; + */ +#ifdef U8X8_WITH_SET_CONTRAST + /* no contrast setting :-( + case U8X8_MSG_DISPLAY_SET_CONTRAST: + u8x8_cad_StartTransfer(u8x8); + u8x8_cad_SendCmd(u8x8, 0x081 ); + u8x8_cad_SendArg(u8x8, arg_int ); + u8x8_cad_EndTransfer(u8x8); + break; + */ +#endif + default: + return 0; + } + return 1; +} + +/*================================================*/ +/* LC7981 160x80 LCD*/ + +static const u8x8_display_info_t u8x8_lc7981_160x80_display_info = +{ + /* chip_enable_level = */ 0, /* LC7981 has a low active CS*/ + /* chip_disable_level = */ 1, + + /* from here... */ + /* post_chip_enable_wait_ns = */ 20, + /* pre_chip_disable_wait_ns = */ 20, + /* reset_pulse_width_ms = */ 1, + /* post_reset_wait_ms = */ 10, + /* sda_setup_time_ns = */ 30, + /* sck_pulse_width_ns = */ 65, /* half of cycle time */ + /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ + /* spi_mode = */ 0, /* active high, rising edge */ + /* i2c_bus_clock_100kHz = */ 4, + /* ... to here, values are ignored, because this is a parallel interface only */ + + /* data_setup_time_ns = */ 220, + /* write_pulse_width_ns = */ 20, + /* tile_width = */ 20, /* width of 20*8=160 pixel */ + /* tile_hight = */ 10, + /* default_x_offset = */ 0, + /* flipmode_x_offset = */ 0, + /* pixel_width = */ 160, + /* pixel_height = */ 80 +}; + +static const uint8_t u8x8_d_lc7981_160x80_init_seq[] = { + + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + + U8X8_DLY(50), + + U8X8_CA(0x00, 0x32), /* display on (bit 5), master mode on (bit 4), graphics mode on (bit 1) */ + U8X8_CA(0x01, 0x07), /* character/bits per pixel pitch */ + U8X8_CA(0x02, 160/8-1), /* number of chars/byte width of the screen */ + U8X8_CA(0x03, 0x50), /* time division: 50 (1/80 duty cycle) */ + U8X8_CA(0x08, 0x00), /* display start low */ + U8X8_CA(0x09, 0x00), /* display start high */ + + U8X8_DLY(10), + + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + +uint8_t u8x8_d_lc7981_160x80(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) +{ + /* call common procedure first and handle messages there */ + if ( u8x8_d_lc7981_common(u8x8, msg, arg_int, arg_ptr) == 0 ) + { + /* msg not handled, then try here */ + switch(msg) + { + case U8X8_MSG_DISPLAY_SETUP_MEMORY: + u8x8_d_helper_display_setup_memory(u8x8, &u8x8_lc7981_160x80_display_info); + break; + case U8X8_MSG_DISPLAY_INIT: + u8x8_d_helper_display_init(u8x8); + u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_160x80_init_seq); + break; + default: + return 0; /* msg unknown */ + } + } + return 1; +} + + +/*================================================*/ +/* LC7981 160x160 LCD*/ + +static const u8x8_display_info_t u8x8_lc7981_160x160_display_info = +{ + /* chip_enable_level = */ 0, /* LC7981 has a low active CS*/ + /* chip_disable_level = */ 1, + + /* from here... */ + /* post_chip_enable_wait_ns = */ 20, + /* pre_chip_disable_wait_ns = */ 20, + /* reset_pulse_width_ms = */ 1, + /* post_reset_wait_ms = */ 10, + /* sda_setup_time_ns = */ 30, + /* sck_pulse_width_ns = */ 65, /* half of cycle time */ + /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ + /* spi_mode = */ 0, /* active high, rising edge */ + /* i2c_bus_clock_100kHz = */ 4, + /* ... to here, values are ignored, because this is a parallel interface only */ + + /* data_setup_time_ns = */ 220, + /* write_pulse_width_ns = */ 20, + /* tile_width = */ 20, /* width of 20*8=160 pixel */ + /* tile_hight = */ 20, + /* default_x_offset = */ 0, + /* flipmode_x_offset = */ 0, + /* pixel_width = */ 160, + /* pixel_height = */ 160 +}; + +static const uint8_t u8x8_d_lc7981_160x160_init_seq[] = { + + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + + U8X8_DLY(50), + + U8X8_CA(0x00, 0x32), /* display on (bit 5), master mode on (bit 4), graphics mode on (bit 1) */ + U8X8_CA(0x01, 0x07), /* character/bits per pixel pitch */ + U8X8_CA(0x02, 160/8-1), /* number of chars/byte width of the screen */ + U8X8_CA(0x03, 159), /* time division */ + U8X8_CA(0x08, 0x00), /* display start low */ + U8X8_CA(0x09, 0x00), /* display start high */ + + U8X8_DLY(10), + + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + +uint8_t u8x8_d_lc7981_160x160(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) +{ + /* call common procedure first and handle messages there */ + if ( u8x8_d_lc7981_common(u8x8, msg, arg_int, arg_ptr) == 0 ) + { + /* msg not handled, then try here */ + switch(msg) + { + case U8X8_MSG_DISPLAY_SETUP_MEMORY: + u8x8_d_helper_display_setup_memory(u8x8, &u8x8_lc7981_160x160_display_info); + break; + case U8X8_MSG_DISPLAY_INIT: + u8x8_d_helper_display_init(u8x8); + u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_160x160_init_seq); + break; + default: + return 0; /* msg unknown */ + } + } + return 1; +} + + +/*================================================*/ +/* LC7981 240x128 LCD*/ + +static const u8x8_display_info_t u8x8_lc7981_240x128_display_info = +{ + /* chip_enable_level = */ 0, /* LC7981 has a low active CS*/ + /* chip_disable_level = */ 1, + + /* from here... */ + /* post_chip_enable_wait_ns = */ 20, + /* pre_chip_disable_wait_ns = */ 20, + /* reset_pulse_width_ms = */ 1, + /* post_reset_wait_ms = */ 10, + /* sda_setup_time_ns = */ 30, + /* sck_pulse_width_ns = */ 65, /* half of cycle time */ + /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ + /* spi_mode = */ 0, /* active high, rising edge */ + /* i2c_bus_clock_100kHz = */ 4, + /* ... to here, values are ignored, because this is a parallel interface only */ + + /* data_setup_time_ns = */ 220, + /* write_pulse_width_ns = */ 20, + /* tile_width = */ 30, /* width of 30*8=240 pixel */ + /* tile_hight = */ 16, + /* default_x_offset = */ 0, + /* flipmode_x_offset = */ 0, + /* pixel_width = */ 240, + /* pixel_height = */ 128 +}; + +static const uint8_t u8x8_d_lc7981_240x128_init_seq[] = { + + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + + U8X8_DLY(50), + + U8X8_CA(0x00, 0x32), /* display on (bit 5), master mode on (bit 4), graphics mode on (bit 1) */ + U8X8_CA(0x01, 0x07), /* character/bits per pixel pitch */ + U8X8_CA(0x02, 240/8-1), /* number of chars/byte width of the screen */ + U8X8_CA(0x03, 0x7f), /* time division */ + U8X8_CA(0x08, 0x00), /* display start low */ + U8X8_CA(0x09, 0x00), /* display start high */ + + U8X8_DLY(10), + + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + +uint8_t u8x8_d_lc7981_240x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) +{ + /* call common procedure first and handle messages there */ + if ( u8x8_d_lc7981_common(u8x8, msg, arg_int, arg_ptr) == 0 ) + { + /* msg not handled, then try here */ + switch(msg) + { + case U8X8_MSG_DISPLAY_SETUP_MEMORY: + u8x8_d_helper_display_setup_memory(u8x8, &u8x8_lc7981_240x128_display_info); + break; + case U8X8_MSG_DISPLAY_INIT: + u8x8_d_helper_display_init(u8x8); + u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_240x128_init_seq); + break; + default: + return 0; /* msg unknown */ + } + } + return 1; +} + + +/*================================================*/ +/* LC7981 240x64 LCD*/ +/* https://github.com/olikraus/u8g2/issues/642 */ + +static const u8x8_display_info_t u8x8_lc7981_240x64_display_info = +{ + /* chip_enable_level = */ 0, /* LC7981 has a low active CS*/ + /* chip_disable_level = */ 1, + + /* from here... */ + /* post_chip_enable_wait_ns = */ 20, + /* pre_chip_disable_wait_ns = */ 20, + /* reset_pulse_width_ms = */ 1, + /* post_reset_wait_ms = */ 10, + /* sda_setup_time_ns = */ 30, + /* sck_pulse_width_ns = */ 65, /* half of cycle time */ + /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ + /* spi_mode = */ 0, /* active high, rising edge */ + /* i2c_bus_clock_100kHz = */ 4, + /* ... to here, values are ignored, because this is a parallel interface only */ + + /* data_setup_time_ns = */ 220, + /* write_pulse_width_ns = */ 20, + /* tile_width = */ 30, /* width of 30*8=240 pixel */ + /* tile_hight = */ 8, + /* default_x_offset = */ 0, + /* flipmode_x_offset = */ 0, + /* pixel_width = */ 240, + /* pixel_height = */ 64 +}; + +static const uint8_t u8x8_d_lc7981_240x64_init_seq[] = { + + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + + U8X8_DLY(50), + + U8X8_CA(0x00, 0x32), /* display on (bit 5), master mode on (bit 4), graphics mode on (bit 1) */ + U8X8_CA(0x01, 0x07), /* character/bits per pixel pitch */ + U8X8_CA(0x02, 240/8-1), /* number of chars/byte width of the screen */ + U8X8_CA(0x03, 0x7f), /* time division */ + U8X8_CA(0x08, 0x00), /* display start low */ + U8X8_CA(0x09, 0x00), /* display start high */ + + U8X8_DLY(10), + + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + +uint8_t u8x8_d_lc7981_240x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) +{ + /* call common procedure first and handle messages there */ + if ( u8x8_d_lc7981_common(u8x8, msg, arg_int, arg_ptr) == 0 ) + { + /* msg not handled, then try here */ + switch(msg) + { + case U8X8_MSG_DISPLAY_SETUP_MEMORY: + u8x8_d_helper_display_setup_memory(u8x8, &u8x8_lc7981_240x64_display_info); + break; + case U8X8_MSG_DISPLAY_INIT: + u8x8_d_helper_display_init(u8x8); + u8x8_cad_SendSequence(u8x8, u8x8_d_lc7981_240x64_init_seq); + break; + default: + return 0; /* msg unknown */ + } + } + return 1; +} +