Draw the character of the ASCII code.
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Fork of AsciiFont by
AsciiFont
This is a library to draw the ASCII font characters.
Example
#include "mbed.h" #include "AsciiFont.h" #define WIDTH (12) #define HEIGHT (16) #define BYTE_PER_PIXEL (1u) #define STRIDE (((WIDTH * BYTE_PER_PIXEL) + 7u) & ~7u) //multiple of 8 uint8_t text_field[STRIDE * HEIGHT]; //for debug void print_text_field() { int idx = 0; for (int i = 0; i < HEIGHT; i++) { for (int j = 0; j < STRIDE; j++) { printf("%02x", text_field[idx++]); } printf("\r\n"); } printf("\r\n"); } int main() { AsciiFont ascii_font(text_field, WIDTH, HEIGHT, STRIDE, BYTE_PER_PIXEL); ascii_font.Erase(0xcc); ascii_font.DrawStr("AB", 0, 0, 0x11, 1); ascii_font.DrawChar('C', AsciiFont::CHAR_PIX_WIDTH, AsciiFont::CHAR_PIX_HEIGHT, 0x22, 1); print_text_field(); //debug print ascii_font.Erase(); ascii_font.DrawStr("D", 0, 0, 0xef, 2); print_text_field(); //debug print ascii_font.Erase(0x11, 6, 0, 6, 8); print_text_field(); //debug print }
API
Import library
Public Member Functions |
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AsciiFont (uint8_t *p_buf, int width, int height, int stride, int byte_per_pixel, uint32_t const colour=0) | |
Constructor: Initializes
AsciiFont
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void | Erase () |
Erase text field.
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void | Erase (uint32_t const colour) |
Erase text field.
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void | Erase (uint32_t const colour, int x, int y, int width, int height) |
Erase text field.
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int | DrawStr (char *str, int x, int y, uint32_t const colour, int font_size=1, uint16_t const max_char_num=0xffff) |
Draw a string.
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bool | DrawChar (char c, int x, int y, uint32_t const colour, int font_size=1) |
Draw a character.
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Static Public Attributes |
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static const int | CHAR_PIX_WIDTH = 6 |
The pixel width of a character.
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static const int | CHAR_PIX_HEIGHT = 8 |
The pixel height of a character.
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Diff: ascii.c
- Revision:
- 1:fc1b3db025d6
- Parent:
- 0:99222c303e8f
diff -r 99222c303e8f -r fc1b3db025d6 ascii.c --- a/ascii.c Tue Sep 27 07:03:20 2016 +0000 +++ b/ascii.c Mon Oct 03 02:20:49 2016 +0000 @@ -19,29 +19,33 @@ * following link: * http://www.renesas.com/disclaimer * +* Copyright (C) 2014 Renesas Electronics Corporation. All rights reserved. *******************************************************************************/ -/* Copyright (C) 2013 Renesas Electronics Corporation. All rights reserved. */ /******************************************************************************* * File Name : ascii.c -* Device(s) : RZ/A1H RSK+RZA1H +* Device(s) : RZ/A1H (R7S721001) +* Tool-Chain : GNUARM-NONEv14.02-EABI * H/W Platform : RSK+RZA1H CPU Board * Description : Defines ascii font table *******************************************************************************/ /******************************************************************************* * History : DD.MM.YYYY Version Description -* : 18.06.2013 1.00 +* : 21.10.2014 1.00 *******************************************************************************/ + /******************************************************************************* * User Includes (Project Level Includes) *******************************************************************************/ +/* ASCII header */ #include "ascii.h" /******************************************************************************* * Global Tables *******************************************************************************/ +/* Bytes after this pre-processor are 1-byte aligned */ #pragma pack(1) -char ASCII_TABLE[][6] = +const char g_ascii_table[][6] = { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* ' '*/ { 0x00, 0x00, 0x79, 0x00, 0x00, 0x00}, /* ! */ @@ -140,5 +144,6 @@ { 0x00, 0x20, 0x40, 0x20, 0x40, 0x00} /* ~ */ }; +/* Bytes after this pre-processor are 4-byte aligned */ #pragma pack(4)