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- /*
-
- u8x8_display.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.
-
-
- Abstraction layer for the graphics controller.
- Main goal is the placement of a 8x8 pixel block (tile) on the display.
-
- */
- #include "u8x8.h"
- /*==========================================*/
- /* internal library function */
- /*
- this is a helper function for the U8X8_MSG_DISPLAY_SETUP_MEMORY function.
- It can be called within the display callback function to carry out the usual standard tasks.
-
- */
- void u8x8_d_helper_display_setup_memory(u8x8_t *u8x8, const u8x8_display_info_t *display_info)
- {
- /* 1) set display info struct */
- u8x8->display_info = display_info;
- u8x8->x_offset = u8x8->display_info->default_x_offset;
- }
- /*
- this is a helper function for the U8X8_MSG_DISPLAY_INIT function.
- It can be called within the display callback function to carry out the usual standard tasks.
-
- */
- void u8x8_d_helper_display_init(u8x8_t *u8x8)
- {
- /* 2) apply port directions to the GPIO lines and apply default values for the IO lines*/
- u8x8_gpio_Init(u8x8);
- u8x8_cad_Init(u8x8);
- /* 3) do reset */
- u8x8_gpio_SetReset(u8x8, 1);
- u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_MILLI, u8x8->display_info->reset_pulse_width_ms);
- u8x8_gpio_SetReset(u8x8, 0);
- u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_MILLI, u8x8->display_info->reset_pulse_width_ms);
- u8x8_gpio_SetReset(u8x8, 1);
- u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_MILLI, u8x8->display_info->post_reset_wait_ms);
- }
- /*==========================================*/
- /* official functions */
- uint8_t u8x8_DrawTile(u8x8_t *u8x8, uint8_t x, uint8_t y, uint8_t cnt, uint8_t *tile_ptr)
- {
- u8x8_tile_t tile;
- tile.x_pos = x;
- tile.y_pos = y;
- tile.cnt = cnt;
- tile.tile_ptr = tile_ptr;
- return u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_DRAW_TILE, 1, (void *)&tile);
- }
- /* should be implemented as macro */
- void u8x8_SetupMemory(u8x8_t *u8x8)
- {
- u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SETUP_MEMORY, 0, NULL);
- }
- void u8x8_InitDisplay(u8x8_t *u8x8)
- {
- u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_INIT, 0, NULL);
- }
- void u8x8_SetPowerSave(u8x8_t *u8x8, uint8_t is_enable)
- {
- u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SET_POWER_SAVE, is_enable, NULL);
- }
- void u8x8_SetFlipMode(u8x8_t *u8x8, uint8_t mode)
- {
- u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SET_FLIP_MODE, mode, NULL);
- }
- void u8x8_SetContrast(u8x8_t *u8x8, uint8_t value)
- {
- u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_SET_CONTRAST, value, NULL);
- }
- void u8x8_RefreshDisplay(u8x8_t *u8x8)
- {
- u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_REFRESH, 0, NULL);
- }
- void u8x8_ClearDisplayWithTile(u8x8_t *u8x8, const uint8_t *buf)
- {
- u8x8_tile_t tile;
- uint8_t h;
- tile.x_pos = 0;
- tile.cnt = 1;
- tile.tile_ptr = (uint8_t *)buf; /* tile_ptr should be const, but isn't */
-
- h = u8x8->display_info->tile_height;
- tile.y_pos = 0;
- do
- {
- u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_DRAW_TILE, u8x8->display_info->tile_width, (void *)&tile);
- tile.y_pos++;
- } while( tile.y_pos < h );
- }
- void u8x8_ClearDisplay(u8x8_t *u8x8)
- {
- uint8_t buf[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
- u8x8_ClearDisplayWithTile(u8x8, buf);
- }
- void u8x8_FillDisplay(u8x8_t *u8x8)
- {
- uint8_t buf[8] = { 255, 255, 255, 255, 255, 255, 255, 255 };
- u8x8_ClearDisplayWithTile(u8x8, buf);
- }
- void u8x8_ClearLine(u8x8_t *u8x8, uint8_t line)
- {
- uint8_t buf[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
- u8x8_tile_t tile;
- if ( line < u8x8->display_info->tile_height )
- {
- tile.x_pos = 0;
- tile.y_pos = line;
- tile.cnt = 1;
- tile.tile_ptr = (uint8_t *)buf; /* tile_ptr should be const, but isn't */
- u8x8->display_cb(u8x8, U8X8_MSG_DISPLAY_DRAW_TILE, u8x8->display_info->tile_width, (void *)&tile);
- }
- }
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