Mikrocontroller und Digitale Elektronik
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MAX7456 & STM32 Charakter überschrieben
Guten Abend,
Habe vor einen MAX7456 an einem STM32 zu betreiben. Der TestCode mit dem
Anzeigen eines "SAMPLE" Text funktionierte auch ohne Probleme.
Nachdem ich allerdings begonnen habe zu "spielen" und versucht habe
einen Code von Ulrich Radig auf den STM zu portieren ( speziell folgende
Funktion )
:
1 //Init Pal
2 void pal_init ( void )
3 {
4 //Setup Serial Peripheral Interface
5 DDRB |= ( 1 << PB3 ) | ( 1 << PB5 ) | ( 1 << PB2 );
6
7 //CS Signal
8 DDRB |= ( 1 << PB1 );
9 PAL_CS_HIGH ;
10
11 //Setup Serial Peripheral Interface (SPI)
12 SPCR |= ( 1 << SPE ) | ( 1 << MSTR ) | ( 1 << SPR0 );
13
14 //Programmieren des Zeichensatzes
15 for ( unsigned char count = 0 ; count < 91 ; count ++ )
16 {
17 unsigned int tmp = (( unsigned int ) & FONT ) + ( 64 * count );
18 unsigned char Index ;
19 pal_data_write ( VIDEO_MODE_0_WRITE , 0x00 );
20
21 pal_data_write ( FM_ADDRH_WRITE , count );
22 for ( Index = 0x00 ; Index < 0x36 ; Index ++ )
23 {
24 pal_data_write ( FM_ADDRL_WRITE , Index );
25 pal_data_write ( FM_DATA_IN_WRITE , pgm_read_byte ( tmp + Index ));
26 }
27 pal_data_write ( FM_MODE_WRITE , 0xA0 );
28 //for(unsigned long a=0;a<100000;a++){asm("nop");};
29 while (( pal_data_write ( STATUS_READ , 0 ) & 0x20 ) != 0x00 );
30 }
31
32 pal_data_write ( 0x00 , 0x48 );
33 pal_data_write ( 0x04 , 0x04 );
34 pal_data_write ( 0x05 ,( display_memory_address & 0xFF00 ) >> 8 );
35 pal_data_write ( 0x06 ,( display_memory_address & 0x00FF ));
36
37 return ;
38 }
hat der Ärger angefangen..
Es lief nicht, da ich nicht genau wusste wie ich das PROGMEM zu ersetzen
habe. Bei dem Testlauf habe ich mir scheinbar das Zeichen für
"WHITESPACE" überschrieben. Zumindest zeigt sich bei dem vorher
funktionstüchtigen Code folgendes Fehlerbild.
http://s14.directupload.net/images/130308/sjbzfqxu.jpg
Ich möchte nun erneut und richtig die Char Tabelle einlesen. Habe dazu
folgenden Code gefunden:
1 /****************************************************************************
2 * Copyright (C) 2009-2013 by Claas Anders "CaScAdE" Rathje *
3 * admiralcascade@gmail.com *
4 * Project-URL: http://www.mylifesucks.de/oss/c-osd/ *
5 * *
6 * This program is free software; you can redistribute it and/or modify *
7 * it under the terms of the GNU General Public License as published by *
8 * the Free Software Foundation; either version 2 of the License. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ****************************************************************************/
20
21 #include "main.h"
22 #include <avr/io.h>
23 #include <avr/pgmspace.h>
24 #include <util/delay.h>
25 #include "max7456_software_spi.h"
26
27
28 #if (ALLCHARSDEBUG|(WRITECHARS != -1))
29
30 /**
31 * easy char creation:
32 * http://www.mylifesucks.de/tools/max7456/
33 */
34 // chars 0 - 255 with 54 byte per char
35 // orginal filename: c-osd.mcm
36 // Wed, 21 Sep 2011 13:46:48 +0200
37
38
39
40 // 0 ------------
41 // 1 ------------
42 // 2 ------------
43 // 3 ------------
44 // 4 ------------
45 // 5 ------------
46 // 6 ------------
47 // 7 ------------
48 // 8 ------------
49 // 9 ------------
50 // 10 ------------
51 // 11 ------------
52 // 12 ------------
53 // 13 ------------
54 // 14 ------------
55 // 15 ------------
56 // 16 ------------
57 // 17 ------------
58 // 000000000011
59 // 012345678901
60 const char chr0 [] PROGMEM = { 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 };
61
62
63 // 0 ------------
64 // 1 ------------
65 // 2 -----##-----
66 // 3 ----# #----
67 // 4 ---# #----
68 // 5 --# #----
69 // 6 --# #----
70 // 7 --### #----
71 // 8 ----# #----
72 // 9 ----# #----
73 // 10 ----# #----
74 // 11 ----# #----
75 // 12 ----# #----
76 // 13 ----# #----
77 // 14 ---## ##---
78 // 15 --# #--
79 // 16 --# #--
80 // 17 ---######---
81 // 000000000011
82 // 012345678901
83 const char chr1 [] PROGMEM = { 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x41 , 0x55 , 0x55 , 0x28 , 0x55 , 0x54 , 0xa8 , 0x55 , 0x52 , 0xa8 , 0x55 , 0x52 , 0xa8 , 0x55 , 0x50 , 0x28 , 0x55 , 0x55 , 0x28 , 0x55 , 0x55 , 0x28 , 0x55 , 0x55 , 0x28 , 0x55 , 0x55 , 0x28 , 0x55 , 0x55 , 0x28 , 0x55 , 0x55 , 0x28 , 0x55 , 0x54 , 0x28 , 0x15 , 0x52 , 0xaa , 0x85 , 0x52 , 0xaa , 0x85 , 0x54 , 0x00 , 0x15 };
84
85
86
87
88 // 0 ------------
89 // 1 ------------
90 // 2 ------------
91 // 3 ------------
92 // 4 ------------
93 // 5 ------------
94 // 6 ------------
95 // 7 -###--#---#-
96 // 8 # ## #-# #
97 // 9 # ## # # #
98 // 10 # ## # # # #
99 // 11 # ## # # # #
100 // 12 # ## ### #
101 // 13 # ##-# #-# #
102 // 14 # #--# #-# #
103 // 15 # #--# #-# #
104 // 16 # #--# #-# #
105 // 17 -#----#---#-
106 // 000000000011
107 // 012345678901
108 const char chr254 [] PROGMEM = { 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x55 , 0x40 , 0x51 , 0x51 , 0x2a , 0x08 , 0x48 , 0x20 , 0x8a , 0x28 , 0x20 , 0x88 , 0x88 , 0x20 , 0x88 , 0x88 , 0x2a , 0x08 , 0x08 , 0x20 , 0x48 , 0x48 , 0x21 , 0x48 , 0x48 , 0x21 , 0x48 , 0x48 , 0x21 , 0x48 , 0x48 , 0x45 , 0x51 , 0x51 };
109
110
111 // 0
112 // 1
113 // 2
114 // 3
115 // 4
116 // 5
117 // 6
118 // 7
119 // 8
120 // 9
121 // 10
122 // 11
123 // 12
124 // 13
125 // 14
126 // 15
127 // 16
128 // 17
129 // 000000000011
130 // 012345678901
131 const char chr255 [] PROGMEM = { 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa , 0xaa };
132
133
134 const char * chars [] PROGMEM = { chr0 , chr1 , chr2 , chr3 , chr4 , chr5 , chr6 , chr7 , chr8 , chr9 , chr10 , chr11 , chr12 , chr13 , chr14 , chr15 , chr16 , chr17 , chr18 , chr19 , chr20 , chr21 , chr22 , chr23 , chr24 , chr25 , chr26 , chr27 , chr28 , chr29 , chr30 , chr31 , chr32 , chr33 , chr34 , chr35 , chr36 , chr37 , chr38 , chr39 , chr40 , chr41 , chr42 , chr43 , chr44 , chr45 , chr46 , chr47 , chr48 , chr49 , chr50 , chr51 , chr52 , chr53 , chr54 , chr55 , chr56 , chr57 , chr58 , chr59 , chr60 , chr61 , chr62 , chr63 , chr64 , chr65 , chr66 , chr67 , chr68 , chr69 , chr70 , chr71 , chr72 , chr73 , chr74 , chr75 , chr76 , chr77 , chr78 , chr79 , chr80 , chr81 , chr82 , chr83 , chr84 , chr85 , chr86 , chr87 , chr88 , chr89 , chr90 , chr91 , chr92 , chr93 , chr94 , chr95 , chr96 , chr97 , chr98 , chr99 , chr100 , chr101 , chr102 , chr103 , chr104 , chr105 , chr106 , chr107 , chr108 , chr109 , chr110 , chr111 , chr112 , chr113 , chr114 , chr115 , chr116 , chr117 , chr118 , chr119 , chr120 , chr121 , chr122 , chr123 , chr124 , chr125 , chr126 , chr127 , chr128 , chr129 , chr130 , chr131 , chr132 , chr133 , chr134 , chr135 , chr136 , chr137 , chr138 , chr139 , chr140 , chr141 , chr142 , chr143 , chr144 , chr145 , chr146 , chr147 , chr148 , chr149 , chr150 , chr151 , chr152 , chr153 , chr154 , chr155 , chr156 , chr157 , chr158 , chr159 , chr160 , chr161 , chr162 , chr163 , chr164 , chr165 , chr166 , chr167 , chr168 , chr169 , chr170 , chr171 , chr172 , chr173 , chr174 , chr175 , chr176 , chr177 , chr178 , chr179 , chr180 , chr181 , chr182 , chr183 , chr184 , chr185 , chr186 , chr187 , chr188 , chr189 , chr190 , chr191 , chr192 , chr193 , chr194 , chr195 , chr196 , chr197 , chr198 , chr199 , chr200 , chr201 , chr202 , chr203 , chr204 , chr205 , chr206 , chr207 , chr208 , chr209 , chr210 , chr211 , chr212 , chr213 , chr214 , chr215 , chr216 , chr217 , chr218 , chr219 , chr220 , chr221 , chr222 , chr223 , chr224 , chr225 , chr226 , chr227 , chr228 , chr229 , chr230 , chr231 , chr232 , chr233 , chr234 , chr235 , chr236 , chr237 , chr238 , chr239 , chr240 , chr241 , chr242 , chr243 , chr244 , chr245 , chr246 , chr247 , chr248 , chr249 , chr250 , chr251 , chr252 , chr253 , chr254 , chr255 };
135
136 /**
137 * put the above chars in the memory of the MAX7456
138 * TODO: read out character, compare and write only if different
139 */
140 void learn_all_chars_pgm ( void ) {
141 char * pointer ;
142 for ( uint16_t c = 0 ; c < 256 ; c ++ ) {
143 LED3_ON
144 // select character to write (CMAH)
145 spi_send_byte ( 0x09 , c );
146
147 _delay_ms ( 1 );
148
149 pointer = ( char * ) pgm_read_word ( & chars [ c ]);
150
151 for ( uint8_t i = 0 ; i < 54 ; i ++ ) {
152 // select 4pixel byte of char (CMAL)
153 spi_send_byte ( 0x0A , i );
154
155 _delay_ms ( 1 );
156
157 // write 4pixel byte of char (CMDI)
158 spi_send_byte ( 0x0B , pgm_read_byte ( pointer ++ ));
159 _delay_ms ( 1 );
160 }
161
162 // write to the NVM array from the shadow RAM (CMM)
163 spi_send_byte ( 0x08 , 0 b10100000 );
164
165 LED3_OFF
166 // according to maxim writing to nvram takes about 12ms, lets wait longer
167 _delay_ms ( 50 );
168 }
169 }
170
171
172
173 #endif
Mir ist jedoch unklar wie ich diesen STM32 fähig mache.
Speziell :
1 pointer = ( char * ) pgm_read_word ( & chars [ c ]);
2
3 //und
4
5 spi_send_byte ( 0x0B , pgm_read_byte ( pointer ++ ));
Vielen Dank !
Habe nun alle char arrays in ein 2d array gepackt.Nicht schoen aber
funktioniert. Vielleicht findet sich ja noch jemand mit einer Loesung
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