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