/* u8x8_d_st7565.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" static const uint8_t u8x8_d_st7565_powersave0_seq[] = { U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ U8X8_C(0x0af), /* display on */ U8X8_END_TRANSFER(), /* disable chip */ U8X8_END() /* end of sequence */ }; static const uint8_t u8x8_d_st7565_powersave1_seq[] = { U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ U8X8_C(0x0ae), /* display off */ U8X8_END_TRANSFER(), /* disable chip */ U8X8_END() /* end of sequence */ }; static const uint8_t u8x8_d_st7565_flip0_seq[] = { U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ U8X8_C(0x0a1), /* segment remap a0/a1*/ U8X8_C(0x0c0), /* c0: scan dir normal, c8: reverse */ U8X8_END_TRANSFER(), /* disable chip */ U8X8_END() /* end of sequence */ }; static const uint8_t u8x8_d_st7565_flip1_seq[] = { U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ U8X8_C(0x0a0), /* segment remap a0/a1*/ U8X8_C(0x0c8), /* c0: scan dir normal, c8: reverse */ U8X8_END_TRANSFER(), /* disable chip */ U8X8_END() /* end of sequence */ }; static const u8x8_display_info_t u8x8_st7565_128x64_display_info = { /* chip_enable_level = */ 0, /* chip_disable_level = */ 1, /* post_chip_enable_wait_ns = */ 150, /* st7565 datasheet, table 26, tcsh */ /* pre_chip_disable_wait_ns = */ 50, /* st7565 datasheet, table 26, tcss */ /* reset_pulse_width_ms = */ 1, /* post_reset_wait_ms = */ 1, /* sda_setup_time_ns = */ 50, /* st7565 datasheet, table 26, tsds */ /* sck_pulse_width_ns = */ 120, /* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */ /* spi_mode = */ 1, /* active high, rising edge */ /* i2c_bus_clock_100kHz = */ 4, /* data_setup_time_ns = */ 40, /* st7565 datasheet, table 24, tds8 */ /* write_pulse_width_ns = */ 80, /* st7565 datasheet, table 24, tcclw */ /* tile_width = */ 16, /* width of 16*8=128 pixel */ /* tile_hight = */ 8, /* default_x_offset = */ 0, /* flipmode_x_offset = */ 4, /* pixel_width = */ 128, /* pixel_height = */ 64 }; static const u8x8_display_info_t u8x8_st7565_128x32_display_info = { /* chip_enable_level = */ 0, /* chip_disable_level = */ 1, /* post_chip_enable_wait_ns = */ 150, /* st7565 datasheet, table 26, tcsh */ /* pre_chip_disable_wait_ns = */ 50, /* st7565 datasheet, table 26, tcss */ /* reset_pulse_width_ms = */ 1, /* post_reset_wait_ms = */ 1, /* sda_setup_time_ns = */ 50, /* st7565 datasheet, table 26, tsds */ /* sck_pulse_width_ns = */ 120, /* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */ /* spi_mode = */ 1, /* active high, rising edge */ /* i2c_bus_clock_100kHz = */ 4, /* data_setup_time_ns = */ 40, /* st7565 datasheet, table 24, tds8 */ /* write_pulse_width_ns = */ 80, /* st7565 datasheet, table 24, tcclw */ /* tile_width = */ 16, /* width of 16*8=128 pixel */ /* tile_hight = */ 4, /* default_x_offset = */ 4, /* flipmode_x_offset = */ 0, /* pixel_width = */ 128, /* pixel_height = */ 32 }; uint8_t u8x8_d_st7565_common(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_DRAW_TILE: u8x8_cad_StartTransfer(u8x8); x = ((u8x8_tile_t *)arg_ptr)->x_pos; x *= 8; x += u8x8->x_offset; //x += 4; u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) ); u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15))); u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos)); c = ((u8x8_tile_t *)arg_ptr)->cnt; c *= 8; ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr; /* The following if condition checks the hardware limits of the st7565 controller: It is not allowed to write beyond the display limits. This is in fact an issue within flip mode. */ if ( c + x > 132u ) { c = 132u; c -= x; } 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; /* handled in the calling procedure case U8X8_MSG_DISPLAY_SETUP_MEMORY: u8x8_d_helper_display_setup_memory(u8x8, &u8x8_st7565_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; */ case U8X8_MSG_DISPLAY_SET_POWER_SAVE: if ( arg_int == 0 ) u8x8_cad_SendSequence(u8x8, u8x8_d_st7565_powersave0_seq); else u8x8_cad_SendSequence(u8x8, u8x8_d_st7565_powersave1_seq); break; case U8X8_MSG_DISPLAY_SET_FLIP_MODE: if ( arg_int == 0 ) { u8x8_cad_SendSequence(u8x8, u8x8_d_st7565_flip0_seq); u8x8->x_offset = u8x8->display_info->default_x_offset; } else { u8x8_cad_SendSequence(u8x8, u8x8_d_st7565_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, 0x081 ); u8x8_cad_SendArg(u8x8, arg_int >> 2 ); /* st7565 has range from 0 to 63 */ u8x8_cad_EndTransfer(u8x8); break; #endif default: return 0; } return 1; } /*================================================*/ /* DOGM128 */ static const uint8_t u8x8_d_st7565_dogm128_init_seq[] = { U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ U8X8_C(0x0e2), /* soft reset */ U8X8_C(0x0ae), /* display off */ U8X8_C(0x040), /* set display start line to 0 */ U8X8_C(0x0a1), /* ADC set to reverse */ U8X8_C(0x0c0), /* common output mode */ // Flipmode // U8X8_C(0x0a0), /* ADC set to reverse */ // U8X8_C(0x0c8), /* common output mode */ U8X8_C(0x0a6), /* display normal, bit val 0: LCD pixel off. */ U8X8_C(0x0a2), /* LCD bias 1/9 */ U8X8_C(0x02f), /* all power control circuits on */ U8X8_CA(0x0f8, 0x000), /* set booster ratio to 4x */ U8X8_C(0x027), /* regulator, booster and follower */ U8X8_CA(0x081, 0x018), /* set contrast, contrast value, EA default: 0x016 */ U8X8_C(0x0a4), /* normal display */ U8X8_END_TRANSFER(), /* disable chip */ U8X8_END() /* end of sequence */ }; uint8_t u8x8_d_st7565_ea_dogm128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) { /* call common procedure first and handle messages there */ if ( u8x8_d_st7565_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_st7565_128x64_display_info); break; case U8X8_MSG_DISPLAY_INIT: u8x8_d_helper_display_init(u8x8); u8x8_cad_SendSequence(u8x8, u8x8_d_st7565_dogm128_init_seq); break; default: return 0; /* msg unknown */ } } return 1; } /*================================================*/ /* NHD-C12832 */ static const uint8_t u8x8_d_st7565_nhd_c12832_init_seq[] = { U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ U8X8_C(0x0e2), /* soft reset */ U8X8_C(0x0ae), /* display off */ U8X8_C(0x040), /* set display start line to 0 */ U8X8_C(0x0a1), /* ADC set to reverse */ U8X8_C(0x0c0), /* common output mode */ // Flipmode //U8X8_C(0x0a0), /* ADC set to reverse */ //U8X8_C(0x0c8), /* common output mode */ U8X8_C(0x0a6), /* display normal, bit val 0: LCD pixel off. */ U8X8_C(0x0a2), /* LCD bias 1/9 */ U8X8_C(0x02f), /* all power control circuits on */ U8X8_CA(0x0f8, 0x000), /* set booster ratio to 4x */ U8X8_C(0x023), /* set V0 voltage resistor ratio to large*/ U8X8_CA(0x081, 0x00a), /* set contrast, contrast value NHD C12832 */ U8X8_C(0x0a4), /* normal display */ U8X8_END_TRANSFER(), /* disable chip */ U8X8_END() /* end of sequence */ }; uint8_t u8x8_d_st7565_nhd_c12832(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) { /* call common procedure first and handle messages there */ if ( u8x8_d_st7565_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_st7565_128x32_display_info); break; case U8X8_MSG_DISPLAY_INIT: u8x8_d_helper_display_init(u8x8); u8x8_cad_SendSequence(u8x8, u8x8_d_st7565_nhd_c12832_init_seq); break; default: return 0; /* msg unknown */ } } return 1; }