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215 lines
7.9 KiB
215 lines
7.9 KiB
/* |
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u8x8_d_ssd1306_48x64_winstar.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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/* Winstar 0.71 OLED */ |
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static const uint8_t u8x8_d_ssd1306_48x64_winstar_init_seq[] = |
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{ |
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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, 0x03f), /* multiplex ratio, 0.71 OLED: changed from 0x2f to 0x3f */ |
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U8X8_CA(0x0d3, 0x000), /* display offset, 0.71 OLED */ |
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U8X8_C(0x040), /* set display start line to 0, 0.71 OLED */ |
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U8X8_CA(0x08d, 0x014), /* [2] charge pump setting (p62): 0x014 enable, 0x010 disable, 0.71 OLED 0x14*/ |
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/// according to the datasheet, 0x00 is NOT page addressing mode, but horizontal addressing mode; |
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/// so it looks like u8g2 expects horizontal addressing (and the inline comment is wrong) while the Winstar example |
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/// actually uses page addressing (which is the reset default) |
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U8X8_CA(0x020, 0x000), /* page addressing mode */ |
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U8X8_C(0x0a1), /* segment remap a0/a1, 0.71 OLED */ |
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U8X8_C(0x0c8), /* c0: scan dir normal, c8: reverse, 0.71 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), 0.71 OLED */ |
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U8X8_CA(0x081, 0x07f), /* [2] set contrast control, 0.71 OLED datasheet: 0x7f */ |
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U8X8_CA(0x0d9, 0x022), /* [2] pre-charge period 0x022/f1, 0.71 OLED datasheet: 0x22 */ |
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U8X8_CA(0x0db, 0x040), /* vcomh deselect level, 0.71 OLED datasheet: 0x40 */ |
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// U8X8_C(0x02e), /* Deactivate scroll */ |
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U8X8_C(0x0a4), /* output ram to display */ |
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U8X8_C(0x0a6), /* none inverted normal display mode */ |
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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_48x64_powersave0_seq[] = |
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{ |
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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_48x64_powersave1_seq[] = |
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{ |
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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_48x64_flip0_seq[] = |
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{ |
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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_48x64_flip1_seq[] = |
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{ |
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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_48x64_generic(u8x8_t *u8x8, uint8_t msg, |
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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_48x64_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_48x64_winstar_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_48x64_powersave0_seq); |
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else |
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u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_48x64_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_48x64_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_48x64_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_48x64_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 = */6, |
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/* tile_height = */8, |
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/* default_x_offset = */40, |
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/* flipmode_x_offset = */40, |
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/* pixel_width = */48, |
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/* pixel_height = */64 }; |
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/* Winstar 0.71" OLED */ |
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uint8_t u8x8_d_ssd1306_48x64_winstar(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, |
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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_48x64_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_48x64_winstar_init_seq); |
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return 1; |
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} |
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return u8x8_d_ssd1306_48x64_generic(u8x8, msg, arg_int, arg_ptr); |
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} |
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