Renesas / AsciiFont

Draw the character of the ASCII code.

Dependents:   mbed-os_Watson-IoT_ZXing_sample mbed-os_Watson-IoT_ZXing_sample MovPlayer GR-PEACH_HVC-P2_sample_client ... more

Fork of AsciiFont by Daiki Kato

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
AsciiFont - AsciiFont Class Reference

Public Member Functions

AsciiFont (uint8_t *p_buf, int width, int height, int stride, int byte_per_pixel, uint32_t const colour=0)
Constructor: Initializes AsciiFont .
void Erase ()
Erase text field.
void Erase (uint32_t const colour)
Erase text field.
void Erase (uint32_t const colour, int x, int y, int width, int height)
Erase text field.
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.
bool DrawChar (char c, int x, int y, uint32_t const colour, int font_size=1)
Draw a character.

Static Public Attributes

static const int CHAR_PIX_WIDTH = 6
The pixel width of a character.
static const int CHAR_PIX_HEIGHT = 8
The pixel height of a character.

Diff: ascii.c

Revision:
1:fc1b3db025d6
Parent:
0:99222c303e8f
--- 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)