Renesas
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
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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
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.
|
|
Revision 1:fc1b3db025d6, committed 2016-10-03
- Comitter:
- dkato
- Date:
- Mon Oct 03 02:20:49 2016 +0000
- Parent:
- 0:99222c303e8f
- Child:
- 2:d0bc8c2974e0
- Commit message:
- Update ascii.c.
Changed in this revision
--- a/AsciiFont.cpp Tue Sep 27 07:03:20 2016 +0000
+++ b/AsciiFont.cpp Mon Oct 03 02:20:49 2016 +0000
@@ -70,9 +70,9 @@
}
if ((c >= 0x20) && (c <= 0x7e)) {
- p_pattern = (char *)&ASCII_TABLE[c - 0x20][0];
+ p_pattern = (char *)&g_ascii_table[c - 0x20][0];
} else {
- p_pattern = (char *)&ASCII_TABLE[10][0]; /* '*' */
+ p_pattern = (char *)&g_ascii_table[10][0]; /* '*' */
}
idx_base = (x * pixel_num) + (buf_stride * y);
--- 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)
--- a/ascii.h Tue Sep 27 07:03:20 2016 +0000 +++ b/ascii.h Mon Oct 03 02:20:49 2016 +0000 @@ -19,18 +19,19 @@ * following link: * http://www.renesas.com/disclaimer * -* Copyright (C) 2013 Renesas Electronics Corporation. All rights reserved. -******************************************************************************/ -/****************************************************************************** -* File Name : ascii.h -* Device(s) : R7S721001 -* Tool-Chain : GNUARM-RZv13.01-EABI +* Copyright (C) 2014 Renesas Electronics Corporation. All rights reserved. +*******************************************************************************/ +/******************************************************************************* +* File Name : ascii.h +* Device(s) : RZ/A1H (R7S721001) +* Tool-Chain : GNUARM-NONEv14.02-EABI +* H/W Platform : RSK+RZA1H CPU Board * Description : This Header file contains the Macro Definitions & prototypes * for the functions used in lcd.c *******************************************************************************/ /******************************************************************************* * History : DD.MM.YYYY Version Description -* : 18.06.2013 1.00 +* : 21.10.2014 1.00 *******************************************************************************/ /* Multiple inclusion prevention macro */ @@ -40,8 +41,9 @@ /****************************************************************************** Macro Definitions ******************************************************************************/ -extern char ASCII_TABLE[][6]; +extern const char g_ascii_table[][6]; -#endif /* ASCII_H */ +/* ASCII_H */ +#endif