--- /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;
+}
+