diff --git a/csrc/u8x8_d_st7539.c b/csrc/u8x8_d_st7539.c new file mode 100644 index 00000000..c66b2220 --- /dev/null +++ b/csrc/u8x8_d_st7539.c @@ -0,0 +1,179 @@ +/* + + u8x8_d_st7539.c + + Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/) + + Copyright (c) 2023, 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_st7539_192x64_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_st7539_192x64_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_st7539_192x64_flip0_seq[] = { + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + U8X8_C(0x0c2), /* bit 1: MX, bit 2: MY */ + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + +static const uint8_t u8x8_d_st7539_192x64_flip1_seq[] = { + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + U8X8_C(0x0c4), /* bit 1: MX, bit 2: MY */ + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + + +static const u8x8_display_info_t u8x8_st7539_192x64_display_info = +{ + /* chip_enable_level = */ 0, + /* chip_disable_level = */ 1, + + /* post_chip_enable_wait_ns = */ 1, /* st7539 datasheet, page 46 */ + /* pre_chip_disable_wait_ns = */ 5, /* st7539 datasheet, page 46 */ + /* reset_pulse_width_ms = */ 1, + /* post_reset_wait_ms = */ 6, + /* sda_setup_time_ns = */ 12, /* st7539 datasheet, page 44 */ + /* sck_pulse_width_ns = */ 15, /* st7539 datasheet, page 44 */ + /* sck_clock_hz = */ 2000000UL, /* */ + /* spi_mode = */ 0, /* active high, rising edge */ + /* i2c_bus_clock_100kHz = */ 1, + /* data_setup_time_ns = */ 60, /* st7539 datasheet, page 43 */ + /* write_pulse_width_ns = */ 80, /* st7539 datasheet, page 43 */ + /* tile_width = */ 24, + /* tile_height = */ 8, + /* default_x_offset = */ 0, + /* flipmode_x_offset = */ 0, + /* pixel_width = */ 192, + /* pixel_height = */ 64 +}; + +static const uint8_t u8x8_d_st7539_192x64_init_seq[] = { + + U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ + + U8X8_C(0x0e2), /* soft reset */ + U8X8_C(0x0a0), /* 76Hz FPS*/ + U8X8_C(0x0eb), /* LCD Bias: 0xe8: 6, 0xe9: 7, 0xea: 8, 0xeb: 9 */ + U8X8_C(0x0c2), /* RAM mapping ctrl */ + U8X8_CA(0x081, 145), /* set contrast */ + U8X8_C(0x02e), /* LCD Load + Internal Charge Pump (default: 0x2e) */ + U8X8_C(0x040), /* set display start line to 0 */ + + U8X8_C(0x0a6), /* normal display */ + + U8X8_END_TRANSFER(), /* disable chip */ + U8X8_END() /* end of sequence */ +}; + +// https://github.com/olikraus/u8g2/issues/2146 + +uint8_t u8x8_d_st7539_192x64(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_st7539_192x64_display_info); + break; + case U8X8_MSG_DISPLAY_INIT: + u8x8_d_helper_display_init(u8x8); + u8x8_cad_SendSequence(u8x8, u8x8_d_st7539_192x64_init_seq); + break; + case U8X8_MSG_DISPLAY_SET_POWER_SAVE: + if ( arg_int == 0 ) + u8x8_cad_SendSequence(u8x8, u8x8_d_st7539_192x64_powersave0_seq); + else + u8x8_cad_SendSequence(u8x8, u8x8_d_st7539_192x64_powersave1_seq); + break; + case U8X8_MSG_DISPLAY_SET_FLIP_MODE: + if ( arg_int == 0 ) + { + u8x8_cad_SendSequence(u8x8, u8x8_d_st7539_192x64_flip0_seq); + u8x8->x_offset = u8x8->display_info->default_x_offset; + } + else + { + u8x8_cad_SendSequence(u8x8, u8x8_d_st7539_192x64_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 ); /* st7539 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, 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; + 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; +} +