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Dependencies:   mbed Blynk

u8glibARM/u8g_pb8v2.c@0:d8f4c441e032, 2016-06-10 (annotated)

Committer:
lixianyu
Date:
Fri Jun 10 15:20:20 2016 +0000
Revision:
0:d8f4c441e032
u8glib???????????i2c???

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lixianyu 0:d8f4c441e032 1 /*
lixianyu 0:d8f4c441e032 2
lixianyu 0:d8f4c441e032 3 u8g_pb8v2.c
lixianyu 0:d8f4c441e032 4
lixianyu 0:d8f4c441e032 5 8bit height 2 bit per pixel page buffer
lixianyu 0:d8f4c441e032 6 byte has vertical orientation
lixianyu 0:d8f4c441e032 7
lixianyu 0:d8f4c441e032 8 Universal 8bit Graphics Library
lixianyu 0:d8f4c441e032 9
lixianyu 0:d8f4c441e032 10 Copyright (c) 2011, olikraus@gmail.com
lixianyu 0:d8f4c441e032 11 All rights reserved.
lixianyu 0:d8f4c441e032 12
lixianyu 0:d8f4c441e032 13 Redistribution and use in source and binary forms, with or without modification,
lixianyu 0:d8f4c441e032 14 are permitted provided that the following conditions are met:
lixianyu 0:d8f4c441e032 15
lixianyu 0:d8f4c441e032 16 * Redistributions of source code must retain the above copyright notice, this list
lixianyu 0:d8f4c441e032 17 of conditions and the following disclaimer.
lixianyu 0:d8f4c441e032 18
lixianyu 0:d8f4c441e032 19 * Redistributions in binary form must reproduce the above copyright notice, this
lixianyu 0:d8f4c441e032 20 list of conditions and the following disclaimer in the documentation and/or other
lixianyu 0:d8f4c441e032 21 materials provided with the distribution.
lixianyu 0:d8f4c441e032 22
lixianyu 0:d8f4c441e032 23 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
lixianyu 0:d8f4c441e032 24 CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
lixianyu 0:d8f4c441e032 25 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
lixianyu 0:d8f4c441e032 26 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
lixianyu 0:d8f4c441e032 27 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
lixianyu 0:d8f4c441e032 28 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
lixianyu 0:d8f4c441e032 29 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
lixianyu 0:d8f4c441e032 30 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
lixianyu 0:d8f4c441e032 31 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
lixianyu 0:d8f4c441e032 32 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
lixianyu 0:d8f4c441e032 33 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
lixianyu 0:d8f4c441e032 34 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
lixianyu 0:d8f4c441e032 35 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
lixianyu 0:d8f4c441e032 36
lixianyu 0:d8f4c441e032 37
lixianyu 0:d8f4c441e032 38 */
lixianyu 0:d8f4c441e032 39
lixianyu 0:d8f4c441e032 40 #include "u8g.h"
lixianyu 0:d8f4c441e032 41 #include <string.h>
lixianyu 0:d8f4c441e032 42
lixianyu 0:d8f4c441e032 43 void u8g_pb8v2_Init(u8g_pb_t *b, void *buf, u8g_uint_t width)
lixianyu 0:d8f4c441e032 44 {
lixianyu 0:d8f4c441e032 45 b->buf = buf;
lixianyu 0:d8f4c441e032 46 b->width = width;
lixianyu 0:d8f4c441e032 47 u8g_pb_Clear(b);
lixianyu 0:d8f4c441e032 48 }
lixianyu 0:d8f4c441e032 49
lixianyu 0:d8f4c441e032 50 void u8g_pb8v2_set_pixel(u8g_pb_t *b, u8g_uint_t x, u8g_uint_t y, uint8_t color_index)
lixianyu 0:d8f4c441e032 51 {
lixianyu 0:d8f4c441e032 52 register uint8_t mask;
lixianyu 0:d8f4c441e032 53 uint8_t *ptr = b->buf;
lixianyu 0:d8f4c441e032 54 y -= b->p.page_y0;
lixianyu 0:d8f4c441e032 55 mask = 0x03;
lixianyu 0:d8f4c441e032 56 y &= 0x03;
lixianyu 0:d8f4c441e032 57 y <<= 1;
lixianyu 0:d8f4c441e032 58 mask <<= y;
lixianyu 0:d8f4c441e032 59 mask ^=0xff;
lixianyu 0:d8f4c441e032 60 color_index &= 3;
lixianyu 0:d8f4c441e032 61 color_index <<= y;
lixianyu 0:d8f4c441e032 62 ptr += x;
lixianyu 0:d8f4c441e032 63 *ptr &= mask;
lixianyu 0:d8f4c441e032 64 *ptr |= color_index;
lixianyu 0:d8f4c441e032 65 }
lixianyu 0:d8f4c441e032 66
lixianyu 0:d8f4c441e032 67
lixianyu 0:d8f4c441e032 68 void u8g_pb8v2_SetPixel(u8g_pb_t *b, const u8g_dev_arg_pixel_t * const arg_pixel)
lixianyu 0:d8f4c441e032 69 {
lixianyu 0:d8f4c441e032 70 if ( arg_pixel->y < b->p.page_y0 )
lixianyu 0:d8f4c441e032 71 return;
lixianyu 0:d8f4c441e032 72 if ( arg_pixel->y > b->p.page_y1 )
lixianyu 0:d8f4c441e032 73 return;
lixianyu 0:d8f4c441e032 74 if ( arg_pixel->x >= b->width )
lixianyu 0:d8f4c441e032 75 return;
lixianyu 0:d8f4c441e032 76 u8g_pb8v2_set_pixel(b, arg_pixel->x, arg_pixel->y, arg_pixel->color);
lixianyu 0:d8f4c441e032 77 }
lixianyu 0:d8f4c441e032 78
lixianyu 0:d8f4c441e032 79
lixianyu 0:d8f4c441e032 80 void u8g_pb8v2_Set8PixelStd(u8g_pb_t *b, u8g_dev_arg_pixel_t *arg_pixel)
lixianyu 0:d8f4c441e032 81 {
lixianyu 0:d8f4c441e032 82 register uint8_t pixel = arg_pixel->pixel;
lixianyu 0:d8f4c441e032 83 do
lixianyu 0:d8f4c441e032 84 {
lixianyu 0:d8f4c441e032 85 if ( pixel & 128 )
lixianyu 0:d8f4c441e032 86 {
lixianyu 0:d8f4c441e032 87 u8g_pb8v2_SetPixel(b, arg_pixel);
lixianyu 0:d8f4c441e032 88 }
lixianyu 0:d8f4c441e032 89 switch( arg_pixel->dir )
lixianyu 0:d8f4c441e032 90 {
lixianyu 0:d8f4c441e032 91 case 0: arg_pixel->x++; break;
lixianyu 0:d8f4c441e032 92 case 1: arg_pixel->y++; break;
lixianyu 0:d8f4c441e032 93 case 2: arg_pixel->x--; break;
lixianyu 0:d8f4c441e032 94 case 3: arg_pixel->y--; break;
lixianyu 0:d8f4c441e032 95 }
lixianyu 0:d8f4c441e032 96 pixel <<= 1;
lixianyu 0:d8f4c441e032 97 } while( pixel != 0 );
lixianyu 0:d8f4c441e032 98
lixianyu 0:d8f4c441e032 99 }
lixianyu 0:d8f4c441e032 100
lixianyu 0:d8f4c441e032 101
lixianyu 0:d8f4c441e032 102
lixianyu 0:d8f4c441e032 103 uint8_t u8g_dev_pb8v2_base_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg)
lixianyu 0:d8f4c441e032 104 {
lixianyu 0:d8f4c441e032 105 u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem);
lixianyu 0:d8f4c441e032 106 switch(msg)
lixianyu 0:d8f4c441e032 107 {
lixianyu 0:d8f4c441e032 108 case U8G_DEV_MSG_SET_8PIXEL:
lixianyu 0:d8f4c441e032 109 if ( u8g_pb_Is8PixelVisible(pb, (u8g_dev_arg_pixel_t *)arg) )
lixianyu 0:d8f4c441e032 110 {
lixianyu 0:d8f4c441e032 111 u8g_pb8v2_Set8PixelStd(pb, (u8g_dev_arg_pixel_t *)arg);
lixianyu 0:d8f4c441e032 112 }
lixianyu 0:d8f4c441e032 113 break;
lixianyu 0:d8f4c441e032 114 case U8G_DEV_MSG_SET_PIXEL:
lixianyu 0:d8f4c441e032 115 u8g_pb8v2_SetPixel(pb, (u8g_dev_arg_pixel_t *)arg);
lixianyu 0:d8f4c441e032 116 break;
lixianyu 0:d8f4c441e032 117 case U8G_DEV_MSG_INIT:
lixianyu 0:d8f4c441e032 118 break;
lixianyu 0:d8f4c441e032 119 case U8G_DEV_MSG_STOP:
lixianyu 0:d8f4c441e032 120 break;
lixianyu 0:d8f4c441e032 121 case U8G_DEV_MSG_PAGE_FIRST:
lixianyu 0:d8f4c441e032 122 u8g_pb_Clear(pb);
lixianyu 0:d8f4c441e032 123 u8g_page_First(&(pb->p));
lixianyu 0:d8f4c441e032 124 break;
lixianyu 0:d8f4c441e032 125 case U8G_DEV_MSG_PAGE_NEXT:
lixianyu 0:d8f4c441e032 126 if ( u8g_page_Next(&(pb->p)) == 0 )
lixianyu 0:d8f4c441e032 127 return 0;
lixianyu 0:d8f4c441e032 128 u8g_pb_Clear(pb);
lixianyu 0:d8f4c441e032 129 break;
lixianyu 0:d8f4c441e032 130 #ifdef U8G_DEV_MSG_IS_BBX_INTERSECTION
lixianyu 0:d8f4c441e032 131 case U8G_DEV_MSG_IS_BBX_INTERSECTION:
lixianyu 0:d8f4c441e032 132 return u8g_pb_IsIntersection(pb, (u8g_dev_arg_bbx_t *)arg);
lixianyu 0:d8f4c441e032 133 #endif
lixianyu 0:d8f4c441e032 134 case U8G_DEV_MSG_GET_PAGE_BOX:
lixianyu 0:d8f4c441e032 135 u8g_pb_GetPageBox(pb, (u8g_box_t *)arg);
lixianyu 0:d8f4c441e032 136 break;
lixianyu 0:d8f4c441e032 137 case U8G_DEV_MSG_GET_WIDTH:
lixianyu 0:d8f4c441e032 138 *((u8g_uint_t *)arg) = pb->width;
lixianyu 0:d8f4c441e032 139 break;
lixianyu 0:d8f4c441e032 140 case U8G_DEV_MSG_GET_HEIGHT:
lixianyu 0:d8f4c441e032 141 *((u8g_uint_t *)arg) = pb->p.total_height;
lixianyu 0:d8f4c441e032 142 break;
lixianyu 0:d8f4c441e032 143 case U8G_DEV_MSG_SET_COLOR_ENTRY:
lixianyu 0:d8f4c441e032 144 break;
lixianyu 0:d8f4c441e032 145 case U8G_DEV_MSG_SET_XY_CB:
lixianyu 0:d8f4c441e032 146 break;
lixianyu 0:d8f4c441e032 147 case U8G_DEV_MSG_GET_MODE:
lixianyu 0:d8f4c441e032 148 return U8G_MODE_GRAY2BIT;
lixianyu 0:d8f4c441e032 149 }
lixianyu 0:d8f4c441e032 150 return 1;
lixianyu 0:d8f4c441e032 151 }
lixianyu 0:d8f4c441e032 152
lixianyu 0:d8f4c441e032 153
lixianyu 0:d8f4c441e032 154