diff -r 000000000000 -r 88d965579617 components/u8g2/csrc/u8x8_d_ist7920.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/components/u8g2/csrc/u8x8_d_ist7920.c Tue Oct 08 12:00:31 2019 +0200 @@ -0,0 +1,202 @@ +/* + + u8x8_d_ist7920.c + + this is NOT ST7920! + + Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/) + + Copyright (c) 2019, 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" + + + + +static const uint8_t u8x8_d_ist7920_128x128_powersave0_seq[] = { + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + U8X8_C(0x03d), /* display on */ + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + +static const uint8_t u8x8_d_ist7920_128x128_powersave1_seq[] = { + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + U8X8_C(0x03c), /* display off */ + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + +static const uint8_t u8x8_d_ist7920_128x128_flip0_seq[] = { + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + U8X8_C(0x064), /* Display Ctrl: Bit3: SHL 2:ADC 1:EON, 0:REV */ + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + +static const uint8_t u8x8_d_ist7920_128x128_flip1_seq[] = { + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + U8X8_C(0x068), /* Display Ctrl: Bit3: SHL 2:ADC 1:EON, 0:REV */ + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + + +static const u8x8_display_info_t u8x8_ist7920_128x128_display_info = +{ + /* chip_enable_level = */ 0, + /* chip_disable_level = */ 1, + + /* post_chip_enable_wait_ns = */ 90, /* IST7920 datasheet, page 48 */ + /* pre_chip_disable_wait_ns = */ 90, /* IST7920 datasheet, page 48 */ + /* reset_pulse_width_ms = */ 10, + /* post_reset_wait_ms = */ 20, /* IST7920 Startup Seq.. */ + /* sda_setup_time_ns = */ 45, /* IST7920 datasheet, page 48 */ + /* sck_pulse_width_ns = */ 130, /* IST7920 datasheet, page 48 */ + /* sck_clock_hz = */ 3000000UL, /* IST7920 datasheet: 260ns */ + /* spi_mode = */ 0, /* active high, rising edge (not verified) */ + /* i2c_bus_clock_100kHz = */ 4, /* 400kHz according to IST7920 datasheet */ + /* data_setup_time_ns = */ 60, /* IST7920 datasheet, page 47 */ + /* write_pulse_width_ns = */ 150, /* IST7920 datasheet, page 47 */ + /* tile_width = */ 16, /* width of 16*8=128 pixel */ + /* tile_hight = */ 16, + /* default_x_offset = */ 0, + /* flipmode_x_offset = */ 0, + /* pixel_width = */ 128, + /* pixel_height = */ 128 +}; + +/* 1/128 Duty, 1/10 Bias, 128x128 round display */ +static const uint8_t u8x8_d_ist7920_128x128_init_seq[] = { + + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + + U8X8_C(0x076), /* Software Reset */ + U8X8_DLY(50), + U8X8_C(0x03c), /* display off */ + + + U8X8_CA(0x090, 128), /* Set Duty */ + //U8X8_CAA(0x0b2, 0x011, 0x00), /* Set Frame Control */ + + U8X8_CA(0x030, 16), /* Set Bias 0: 1/8, 8: 1/9, 16: 1/10, 24: 1/11, 48: 1/12 ... */ + U8X8_CA(0x031, 0x03f), /* Set voltage generate clock(31H/11H) */ + //U8X8_CA(0x032, 0x015), /* Temperature compensation */ + U8X8_CA(0x033, 0x020), /* Power Control */ + U8X8_DLY(100), + U8X8_CA(0x033, 0x02c), /* Power Control */ + U8X8_DLY(100), + U8X8_C(0xfd), /* set booster */ + U8X8_DLY(100), + U8X8_CA(0x033, 0x02f), /* Power Control */ + U8X8_DLY(200), + + U8X8_C(0x064), /* Display Ctrl: Bit3: SHL 2:ADC 1:EON, 0:REV */ + + U8X8_CAA(0x074, 0x000, 0x00f), /* AY Window */ + U8X8_CAA(0x075, 0x000, 0x07f), /* AX Window */ + + U8X8_CA(0x040, 64), /* Start line at 64 */ + + U8X8_CA(0x0b1, 100), /* electronic volume */ + + + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + +uint8_t u8x8_d_ist7920_128x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) +{ + uint8_t x, c; + uint8_t *ptr; + switch(msg) + { + case U8X8_MSG_DISPLAY_SETUP_MEMORY: + u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ist7920_128x128_display_info); + break; + case U8X8_MSG_DISPLAY_INIT: + u8x8_d_helper_display_init(u8x8); + u8x8_cad_SendSequence(u8x8, u8x8_d_ist7920_128x128_init_seq); + break; + case U8X8_MSG_DISPLAY_SET_POWER_SAVE: + if ( arg_int == 0 ) + u8x8_cad_SendSequence(u8x8, u8x8_d_ist7920_128x128_powersave0_seq); + else + u8x8_cad_SendSequence(u8x8, u8x8_d_ist7920_128x128_powersave1_seq); + break; + case U8X8_MSG_DISPLAY_SET_FLIP_MODE: + if ( arg_int == 0 ) + { + u8x8_cad_SendSequence(u8x8, u8x8_d_ist7920_128x128_flip0_seq); + u8x8->x_offset = u8x8->display_info->default_x_offset; + } + else + { + u8x8_cad_SendSequence(u8x8, u8x8_d_ist7920_128x128_flip1_seq); + u8x8->x_offset = u8x8->display_info->flipmode_x_offset; + } + break; +#ifdef U8X8_WITH_SET_CONTRAST + case U8X8_MSG_DISPLAY_SET_CONTRAST: + u8x8_cad_StartTransfer(u8x8); + u8x8_cad_SendCmd(u8x8, 0x0b1 ); + u8x8_cad_SendArg(u8x8, arg_int ); /* st7920 has range from 0 to 255 */ + u8x8_cad_EndTransfer(u8x8); + break; +#endif + case U8X8_MSG_DISPLAY_DRAW_TILE: + u8x8_cad_StartTransfer(u8x8); + + x = ((u8x8_tile_t *)arg_ptr)->x_pos; + x *= 8; + x += u8x8->x_offset; + u8x8_cad_SendCmd(u8x8, 0x0c0 ); + u8x8_cad_SendArg(u8x8, x ); + u8x8_cad_SendCmd(u8x8, 0x001 ); + u8x8_cad_SendArg(u8x8, (((u8x8_tile_t *)arg_ptr)->y_pos) ); + + c = ((u8x8_tile_t *)arg_ptr)->cnt; + c *= 8; + ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr; + do + { + u8x8_cad_SendData(u8x8, c, ptr); /* note: SendData can not handle more than 255 bytes */ + arg_int--; + } while( arg_int > 0 ); + + u8x8_cad_EndTransfer(u8x8); + break; + default: + return 0; + } + return 1; +} + +