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266 lines
9.3 KiB
266 lines
9.3 KiB
/*
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u8x8_d_ssd1306_72x40.c
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Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
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Copyright (c) 2019, 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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/*
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EastRising 0.41 OLED
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https://www.buydisplay.com/default/white-0-42-inch-oled-display-panel-72x40-iic-i2c-serial-spi-ssd1306
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command(0xae);//--turn off oled panel
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command(0xd5);//--set display clock divide ratio/oscillator frequency
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command(0x80);//--set divide ratio
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command(0xa8);//--set multiplex ratio
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command(0x27);//--1/40 duty
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command(0xd3);//-set display offset
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command(0x00);//-not offset
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command(0xad);//--Internal IREF Setting
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command(0x30);//--
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command(0x8d);//--set Charge Pump enable/disable
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command(0x14);//--set(0x10) disable
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command(0x40);//--set start line address
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command(0xa6);//--set normal display
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command(0xa4);//Disable Entire Display On
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command(0xa1);//--set segment re-map 128 to 0
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command(0xC8);//--Set COM Output Scan Direction 64 to 0
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command(0xda);//--set com pins hardware configuration
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command(0x12);
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command(0x81);//--set contrast control register
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command(0xaf);
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command(0xd9);//--set pre-charge period
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command(0x22);
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command(0xdb);//--set vcomh
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command(0x20);
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command(0xaf);//--turn on oled panel
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*/
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static const uint8_t u8x8_d_ssd1306_72x40_er_init_seq[] = {
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U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
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U8X8_C(0x0ae), /* display off */
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U8X8_CA(0x0d5, 0x080), /* clock divide ratio (0x00=1) and oscillator frequency (0x8) */
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U8X8_CA(0x0a8, 0x027), /* multiplex ratio, 0.42 OLED: 0x27*/
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U8X8_CA(0x0d3, 0x000), /* display offset, 0.42 OLED */
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U8X8_CA(0x0ad, 0x030), /* Internal IREF Setting for the 0.42 OLED, see also issue https://github.com/olikraus/u8g2/issues/1047 */
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U8X8_CA(0x08d, 0x014), /* [2] charge pump setting (p62): 0x014 enable, 0x010 disable, 0.66 OLED 0x14*/
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U8X8_C(0x040), /* set display start line to 0, 0.66 OLED */
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U8X8_C(0x0a6), /* none inverted normal display mode */
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U8X8_C(0x0a4), /* output ram to display */
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U8X8_CA(0x020, 0x000), /* horizontal addressing mode */
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U8X8_C(0x0a1), /* segment remap a0/a1, 0.66 OLED */
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U8X8_C(0x0c8), /* c0: scan dir normal, c8: reverse, 0.66 OLED */
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// Flipmode
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// U8X8_C(0x0a0), /* segment remap a0/a1*/
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// U8X8_C(0x0c0), /* c0: scan dir normal, c8: reverse */
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U8X8_CA(0x0da, 0x012), /* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5), 0.66 OLED */
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U8X8_CA(0x081, 0x0af), /* [2] set contrast control, 0.42 OLED */
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U8X8_CA(0x0d9, 0x022), /* [2] pre-charge period 0x022/f1, 0.42 OLED datasheet: 0x22 */
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U8X8_CA(0x0db, 0x020), /* vcomh deselect level, 0.42 OLED datasheet: 0x20 */
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U8X8_C(0x02e), /* Deactivate scroll */
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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_ssd1306_72x40_powersave0_seq[] = {
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U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
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U8X8_C(0x0af), /* display on */
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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_ssd1306_72x40_powersave1_seq[] = {
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U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
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U8X8_C(0x0ae), /* display off */
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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_ssd1306_72x40_flip0_seq[] = {
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U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
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U8X8_C(0x0a1), /* segment remap a0/a1*/
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U8X8_C(0x0c8), /* c0: scan dir normal, c8: reverse */
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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_ssd1306_72x40_flip1_seq[] = {
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U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */
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U8X8_C(0x0a0), /* segment remap a0/a1*/
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U8X8_C(0x0c0), /* c0: scan dir normal, c8: reverse */
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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 uint8_t u8x8_d_ssd1306_72x40_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
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{
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uint8_t x, c;
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uint8_t *ptr;
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switch(msg)
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{
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/* handled by the calling function
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case U8X8_MSG_DISPLAY_SETUP_MEMORY:
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u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_72x40_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_ssd1306_72x40_er_init_seq);
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break;
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*/
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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_ssd1306_72x40_powersave0_seq);
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else
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u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_72x40_powersave1_seq);
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break;
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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_ssd1306_72x40_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_ssd1306_72x40_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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#ifdef U8X8_WITH_SET_CONTRAST
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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 ); /* ssd1306 has range from 0 to 255 */
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u8x8_cad_EndTransfer(u8x8);
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break;
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#endif
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case U8X8_MSG_DISPLAY_DRAW_TILE:
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u8x8_cad_StartTransfer(u8x8);
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x = ((u8x8_tile_t *)arg_ptr)->x_pos;
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x *= 8;
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x += u8x8->x_offset;
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u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) );
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u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15)));
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u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos));
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do
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{
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c = ((u8x8_tile_t *)arg_ptr)->cnt;
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ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
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u8x8_cad_SendData(u8x8, c*8, ptr); /* note: SendData can not handle more than 255 bytes */
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arg_int--;
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} while( arg_int > 0 );
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u8x8_cad_EndTransfer(u8x8);
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break;
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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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static const u8x8_display_info_t u8x8_ssd1306_72x40_display_info =
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{
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/* chip_enable_level = */ 0,
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/* chip_disable_level = */ 1,
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/* post_chip_enable_wait_ns = */ 20,
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/* pre_chip_disable_wait_ns = */ 10,
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/* reset_pulse_width_ms = */ 100, /* SSD1306: 3 us */
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/* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */
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/* sda_setup_time_ns = */ 50, /* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
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/* sck_pulse_width_ns = */ 50, /* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
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/* sck_clock_hz = */ 8000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215) */
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/* spi_mode = */ 0, /* active high, rising edge */
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/* i2c_bus_clock_100kHz = */ 4,
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/* data_setup_time_ns = */ 40,
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/* write_pulse_width_ns = */ 150, /* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
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/* tile_width = */ 9,
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/* tile_height = */ 5,
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/* default_x_offset = */ 28,
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/* flipmode_x_offset = */ 28,
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/* pixel_width = */ 72,
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/* pixel_height = */ 40
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};
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/*
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EastRising 0.41 OLED
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https://www.buydisplay.com/default/white-0-42-inch-oled-display-panel-72x40-iic-i2c-serial-spi-ssd1306
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*/
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uint8_t u8x8_d_ssd1306_72x40_er(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
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{
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if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
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{
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u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_72x40_display_info);
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return 1;
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}
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else if ( msg == U8X8_MSG_DISPLAY_INIT )
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{
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u8x8_d_helper_display_init(u8x8);
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u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_72x40_er_init_seq);
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return 1;
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}
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return u8x8_d_ssd1306_72x40_generic(u8x8, msg, arg_int, arg_ptr);
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}
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