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1 | /**************************************************************************** |
1 | /**************************************************************************** |
2 | * Copyright (C) 2009 by Claas Anders "CaScAdE" Rathje * |
2 | * Copyright (C) 2009 by Claas Anders "CaScAdE" Rathje * |
3 | * admiralcascade@gmail.com * |
3 | * admiralcascade@gmail.com * |
4 | * Project-URL: http://www.mylifesucks.de/oss/c-osd/ * |
4 | * Project-URL: http://www.mylifesucks.de/oss/c-osd/ * |
5 | * * |
5 | * * |
6 | * This program is free software; you can redistribute it and/or modify * |
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 * |
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. * |
8 | * the Free Software Foundation; either version 2 of the License. * |
9 | * * |
9 | * * |
10 | * This program is distributed in the hope that it will be useful, * |
10 | * This program is distributed in the hope that it will be useful, * |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
13 | * GNU General Public License for more details. * |
13 | * GNU General Public License for more details. * |
14 | * * |
14 | * * |
15 | * You should have received a copy of the GNU General Public License * |
15 | * You should have received a copy of the GNU General Public License * |
16 | * along with this program; if not, write to the * |
16 | * along with this program; if not, write to the * |
17 | * Free Software Foundation, Inc., * |
17 | * Free Software Foundation, Inc., * |
18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
19 | ****************************************************************************/ |
19 | ****************************************************************************/ |
20 | 20 | ||
21 | #include <avr/io.h> |
21 | #include <avr/io.h> |
22 | #include <util/delay.h> |
22 | #include <util/delay.h> |
23 | #include <avr/pgmspace.h> |
23 | #include <avr/pgmspace.h> |
- | 24 | #include "main.h" |
|
24 | #include "max7456_software_spi.h" |
25 | #include "max7456_software_spi.h" |
25 | 26 | ||
26 | /* ########################################################################## |
27 | /* ########################################################################## |
27 | * MAX7456 SPI & Display stuff |
28 | * MAX7456 SPI & Display stuff |
28 | * ##########################################################################*/ |
29 | * ##########################################################################*/ |
29 | 30 | ||
30 | /** |
31 | /** |
31 | * Send a byte through SPI |
32 | * Send a byte through SPI |
32 | */ |
33 | */ |
33 | void spi_send(uint8_t byte) { |
34 | void spi_send(uint8_t byte) { |
34 | for (int8_t i = 7; i >= 0; i--) { |
35 | for (int8_t i = 7; i >= 0; i--) { |
35 | if (((byte >> i) & 1)) { |
36 | if (((byte >> i) & 1)) { |
36 | MAX_SDIN_HIGH |
37 | MAX_SDIN_HIGH |
37 | } else { |
38 | } else { |
38 | MAX_SDIN_LOW |
39 | MAX_SDIN_LOW |
39 | } |
40 | } |
40 | MAX_SCLK_HIGH |
41 | MAX_SCLK_HIGH |
41 | MAX_SCLK_LOW |
42 | MAX_SCLK_LOW |
42 | } |
43 | } |
43 | } |
44 | } |
44 | 45 | ||
45 | /** |
46 | /** |
46 | * Send <byte> to <address> of MAX7456 |
47 | * Send <byte> to <address> of MAX7456 |
47 | */ |
48 | */ |
48 | void spi_send_byte(uint8_t address, uint8_t byte) { |
49 | void spi_send_byte(uint8_t address, uint8_t byte) { |
49 | // start sending |
50 | // start sending |
50 | MAX_CS_LOW |
51 | MAX_CS_LOW |
51 | 52 | ||
52 | spi_send(address); |
53 | spi_send(address); |
53 | spi_send(byte); |
54 | spi_send(byte); |
54 | 55 | ||
55 | // end sending |
56 | // end sending |
56 | MAX_CS_HIGH |
57 | MAX_CS_HIGH |
57 | } |
58 | } |
- | 59 | ||
58 | 60 | ||
59 | /** |
61 | /** |
60 | * write a <character> to <address> of MAX7456 display memory |
62 | * write a <character> to <address> of MAX7456 display memory |
61 | */ |
63 | */ |
62 | void write_char(uint16_t address, char character) { |
64 | void write_char(uint16_t address, char character) { |
63 | spi_send_byte(0x05, (address & 0xFF00) >> 8); // DMAH |
65 | spi_send_byte(0x05, (address & 0xFF00) >> 8); // DMAH |
64 | spi_send_byte(0x06, (address & 0x00FF)); // DMAL |
66 | spi_send_byte(0x06, (address & 0x00FF)); // DMAL |
65 | spi_send_byte(0x07, character); // DMDI |
67 | spi_send_byte(0x07, character); // DMDI |
66 | } |
68 | } |
- | 69 | ||
- | 70 | ||
- | 71 | /** |
|
- | 72 | * clear display memory |
|
- | 73 | * (also sets 8bit mode) |
|
- | 74 | */ |
|
- | 75 | void clear(void) { |
|
- | 76 | /*uint16_t memory_address = 0; |
|
- | 77 | for (unsigned int a = 0; a < 480; a++) { |
|
- | 78 | write_char(memory_address++, 0); |
|
- | 79 | }*/ |
|
- | 80 | // clear all display-mem (DMM) |
|
- | 81 | spi_send_byte(0x04, 0b01000100); |
|
- | 82 | ||
- | 83 | // clearing takes 12uS according to maxim so lets wait longer |
|
- | 84 | _delay_us(20); |
|
- | 85 | } |
|
- | 86 | ||
- | 87 | ||
- | 88 | /** |
|
- | 89 | * for testing write all chars to screen |
|
- | 90 | */ |
|
- | 91 | void write_all_chars() { |
|
- | 92 | uint16_t x = 3, y = 2, t = 0; |
|
- | 93 | while (t < 256) { |
|
- | 94 | write_char(x++ + y*30, t++); |
|
- | 95 | if (x > 25) { |
|
- | 96 | y++; |
|
- | 97 | x = 3; |
|
- | 98 | } |
|
- | 99 | } |
|
- | 100 | } |
|
- | 101 | ||
- | 102 | #if !(ALLCHARSDEBUG|(WRITECHARS != -1)) |
|
67 | 103 | ||
68 | /** |
104 | /** |
69 | * write a character <attribute> to <address> of MAX7456 display memory |
105 | * write a character <attribute> to <address> of MAX7456 display memory |
70 | */ |
106 | */ |
71 | void write_char_att(uint16_t address, char attribute) { |
107 | void write_char_att(uint16_t address, char attribute) { |
72 | // the only important part is that the DMAH[1] is set |
108 | // the only important part is that the DMAH[1] is set |
73 | // so we add 2 which binary is the 2nd lowest byte |
109 | // so we add 2 which binary is the 2nd lowest byte |
74 | spi_send_byte(0x05, ((address & 0xFF00) >> 8) | 2); // DMAH |
110 | spi_send_byte(0x05, ((address & 0xFF00) >> 8) | 2); // DMAH |
75 | spi_send_byte(0x06, (address & 0x00FF)); // DMAL |
111 | spi_send_byte(0x06, (address & 0x00FF)); // DMAL |
76 | spi_send_byte(0x07, attribute); // DMDI |
112 | spi_send_byte(0x07, attribute); // DMDI |
77 | } |
113 | } |
78 | 114 | ||
79 | /** |
115 | /** |
80 | * write a <character> at <x>/<y> to MAX7456 display memory |
116 | * write a <character> at <x>/<y> to MAX7456 display memory |
81 | */ |
117 | */ |
82 | void write_char_xy(uint8_t x, uint8_t y, char character) { |
118 | void write_char_xy(uint8_t x, uint8_t y, char character) { |
83 | uint16_t address = y * 30 + x; |
119 | uint16_t address = y * 30 + x; |
84 | write_char(address, character); |
120 | write_char(address, character); |
85 | } |
121 | } |
86 | 122 | ||
87 | /** |
123 | /** |
88 | * write a character <attribute> at <x>/<y> to MAX7456 display memory |
124 | * write a character <attribute> at <x>/<y> to MAX7456 display memory |
89 | */ |
125 | */ |
90 | void write_char_att_xy(uint8_t x, uint8_t y, char attribute) { |
126 | void write_char_att_xy(uint8_t x, uint8_t y, char attribute) { |
91 | uint16_t address = y * 30 + x; |
127 | uint16_t address = y * 30 + x; |
92 | write_char_att(address, attribute); |
128 | write_char_att(address, attribute); |
93 | } |
129 | } |
94 | 130 | ||
95 | /** |
131 | /** |
96 | * clear display memory |
132 | * let the MAX7456 learn a new character at <number> |
97 | * (also sets 8bit mode) |
133 | * with <data>. |
98 | */ |
134 | */ |
99 | void clear(void) { |
- | |
100 | /*uint16_t memory_address = 0; |
- | |
101 | for (unsigned int a = 0; a < 480; a++) { |
135 | void learn_char(uint8_t number, unsigned char* data) { |
102 | write_char(memory_address++, 0); |
136 | // select character to write (CMAH) |
103 | }*/ |
- | |
104 | // clear all display-mem (DMM) |
- | |
105 | spi_send_byte(0x04, 0b01000100); |
137 | spi_send_byte(0x09, number); |
- | 138 | ||
- | 139 | for (uint8_t i = 0; i < 54; i++) { |
|
- | 140 | // select 4pixel byte of char (CMAL) |
|
- | 141 | spi_send_byte(0x0A, i); |
|
- | 142 | ||
- | 143 | // write 4pixel byte of char (CMDI) |
|
- | 144 | spi_send_byte(0x0B, data[i]); |
|
- | 145 | } |
|
- | 146 | ||
- | 147 | // write to the NVM array from the shadow RAM (CMM) |
|
- | 148 | spi_send_byte(0x08, 0b10100000); |
|
106 | 149 | ||
107 | // clearing takes 12uS according to maxim so lets wait longer |
150 | // according to maxim writing to nvram takes about 12ms, lets wait longer |
108 | _delay_us(20); |
151 | _delay_ms(120); |
109 | } |
152 | } |
110 | 153 | ||
111 | /** |
154 | /** |
112 | * write an ascii <character> to <address> of MAX7456 display memory |
155 | * write an ascii <character> to <address> of MAX7456 display memory |
113 | */ |
156 | */ |
114 | void write_ascii_char(uint16_t address, char c) { |
157 | void write_ascii_char(uint16_t address, char c) { |
115 | if (c == 32) c = 0; // remap space |
158 | if (c == 32) c = 0; // remap space |
116 | else if (c > 48 && c <= 57) c -= 48; // remap numbers |
159 | else if (c > 48 && c <= 57) c -= 48; // remap numbers |
117 | else if (c == '0') c = 10; // remap zero |
160 | else if (c == '0') c = 10; // remap zero |
118 | else if (c >= 65 && c <= 90) c -= 54; // remap big letters |
161 | else if (c >= 65 && c <= 90) c -= 54; // remap big letters |
119 | else if (c >= 97 && c <= 122) c -= 60; // remap small letters |
162 | else if (c >= 97 && c <= 122) c -= 60; // remap small letters |
120 | else if (c == '(') c = 63; // remap |
163 | else if (c == '(') c = 63; // remap |
121 | else if (c == ')') c = 64; // remap |
164 | else if (c == ')') c = 64; // remap |
122 | else if (c == '.') c = 65; // remap |
165 | else if (c == '.') c = 65; // remap |
123 | else if (c == '?') c = 66; // remap |
166 | else if (c == '?') c = 66; // remap |
124 | else if (c == ';') c = 67; // remap |
167 | else if (c == ';') c = 67; // remap |
125 | else if (c == ':') c = 68; // remap |
168 | else if (c == ':') c = 68; // remap |
126 | else if (c == ',') c = 69; // remap |
169 | else if (c == ',') c = 69; // remap |
127 | else if (c == '\'') c = 70; // remap |
170 | else if (c == '\'') c = 70; // remap |
128 | else if (c == '/') c = 71; // remap |
171 | else if (c == '/') c = 71; // remap |
129 | else if (c == '"') c = 72; // remap |
172 | else if (c == '"') c = 72; // remap |
130 | else if (c == '-') c = 73; // remap minus |
173 | else if (c == '-') c = 73; // remap minus |
131 | else if (c == '<') c = 74; // remap |
174 | else if (c == '<') c = 74; // remap |
132 | else if (c == '>') c = 75; // remap |
175 | else if (c == '>') c = 75; // remap |
133 | else if (c == '@') c = 76; // remap |
176 | else if (c == '@') c = 76; // remap |
134 | write_char(address, c); |
177 | write_char(address, c); |
135 | } |
178 | } |
136 | 179 | ||
137 | /** |
180 | /** |
138 | * write an ascii <string> at <x>/<y> to MAX7456 display memory |
181 | * write an ascii <string> at <x>/<y> to MAX7456 display memory |
139 | */ |
182 | */ |
140 | void write_ascii_string(uint8_t x, uint8_t y, char *string) { |
183 | void write_ascii_string(uint8_t x, uint8_t y, char *string) { |
141 | while (*string) { |
184 | while (*string) { |
142 | write_ascii_char(((x++)+(y * 30)), *string); |
185 | write_ascii_char(((x++)+(y * 30)), *string); |
143 | string++; |
186 | string++; |
144 | } |
187 | } |
145 | } |
188 | } |
146 | 189 | ||
147 | /** |
190 | /** |
148 | * write an ascii <string> from progmen at <x>/<y> to MAX7456 display memory |
191 | * write an ascii <string> from progmen at <x>/<y> to MAX7456 display memory |
149 | */ |
192 | */ |
150 | void write_ascii_string_pgm(uint8_t x, uint8_t y, const char *string) { |
193 | void write_ascii_string_pgm(uint8_t x, uint8_t y, const char *string) { |
151 | while (pgm_read_byte(string) != 0x00) |
194 | while (pgm_read_byte(string) != 0x00) |
152 | write_ascii_char(((x++)+(y * 30)), pgm_read_byte(string++)); |
195 | write_ascii_char(((x++)+(y * 30)), pgm_read_byte(string++)); |
153 | } |
196 | } |
154 | 197 | ||
155 | /** |
198 | /** |
156 | * write an <string> from progmen at <x>/<y> downwards to MAX7456 display memory |
199 | * write an <string> from progmen at <x>/<y> downwards to MAX7456 display memory |
157 | */ |
200 | */ |
158 | void write_string_pgm_down(uint8_t x, uint8_t y, const char *string, uint8_t length) { |
201 | void write_string_pgm_down(uint8_t x, uint8_t y, const char *string, uint8_t length) { |
159 | while (length--) |
202 | while (length--) |
160 | write_char((x+(y++ * 30)), pgm_read_byte(string++)); |
203 | write_char((x+(y++ * 30)), pgm_read_byte(string++)); |
161 | } |
204 | } |
162 | 205 | ||
163 | /** |
206 | /** |
164 | * Write only some digits of a unsigned <number> at <x>/<y> to MAX7456 display memory |
207 | * Write only some digits of a unsigned <number> at <x>/<y> to MAX7456 display memory |
165 | * <num> represents the largest multiple of 10 that will still be displayable as |
208 | * <num> represents the largest multiple of 10 that will still be displayable as |
166 | * the first digit, so num = 10 will be 0-99 and so on |
209 | * the first digit, so num = 10 will be 0-99 and so on |
167 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
210 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
168 | */ |
211 | */ |
169 | void write_ndigit_number_u(uint8_t x, uint8_t y, uint16_t number, int16_t num, uint8_t pad) { |
212 | void write_ndigit_number_u(uint8_t x, uint8_t y, uint16_t number, int16_t num, uint8_t pad) { |
170 | // if number is largar than 99[..]9 we must decrease it |
213 | // if number is largar than 99[..]9 we must decrease it |
171 | while (number >= (num * 10)) { |
214 | while (number >= (num * 10)) { |
172 | number -= num * 10; |
215 | number -= num * 10; |
173 | } |
216 | } |
174 | 217 | ||
175 | uint8_t started = 0; |
218 | uint8_t started = 0; |
176 | 219 | ||
177 | while (num > 0) { |
220 | while (num > 0) { |
178 | uint8_t b = number / num; |
221 | uint8_t b = number / num; |
179 | if (b > 0 || started || num == 1) { |
222 | if (b > 0 || started || num == 1) { |
180 | write_ascii_char((x++)+(y * 30), '0' + b); |
223 | write_ascii_char((x++)+(y * 30), '0' + b); |
181 | started = 1; |
224 | started = 1; |
182 | } else { |
225 | } else { |
183 | if (pad) write_ascii_char((x++)+(y * 30), '0'); |
226 | if (pad) write_ascii_char((x++)+(y * 30), '0'); |
184 | else write_ascii_char((x++)+(y * 30), 0); |
227 | else write_ascii_char((x++)+(y * 30), 0); |
185 | } |
228 | } |
186 | number -= b * num; |
229 | number -= b * num; |
187 | 230 | ||
188 | num /= 10; |
231 | num /= 10; |
189 | } |
232 | } |
190 | } |
233 | } |
191 | 234 | ||
192 | /** |
235 | /** |
193 | * Write only some digits of a signed <number> at <x>/<y> to MAX7456 display memory |
236 | * Write only some digits of a signed <number> at <x>/<y> to MAX7456 display memory |
194 | * <num> represents the largest multiple of 10 that will still be displayable as |
237 | * <num> represents the largest multiple of 10 that will still be displayable as |
195 | * the first digit, so num = 10 will be 0-99 and so on |
238 | * the first digit, so num = 10 will be 0-99 and so on |
196 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
239 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
197 | */ |
240 | */ |
198 | void write_ndigit_number_s(uint8_t x, uint8_t y, int16_t number, int16_t num, uint8_t pad) { |
241 | void write_ndigit_number_s(uint8_t x, uint8_t y, int16_t number, int16_t num, uint8_t pad) { |
199 | if (((uint16_t) number) > 32767) { |
242 | if (((uint16_t) number) > 32767) { |
200 | number = number - 65536; |
243 | number = number - 65536; |
201 | num *= -1; |
244 | num *= -1; |
202 | 245 | ||
203 | // if number is smaller than -99[..]9 we must increase it |
246 | // if number is smaller than -99[..]9 we must increase it |
204 | while (number <= (num * 10)) { |
247 | while (number <= (num * 10)) { |
205 | number -= num * 10; |
248 | number -= num * 10; |
206 | } |
249 | } |
207 | 250 | ||
208 | uint8_t started = 0; |
251 | uint8_t started = 0; |
209 | 252 | ||
210 | while (num < 0) { |
253 | while (num < 0) { |
211 | uint8_t b = number / num; |
254 | uint8_t b = number / num; |
212 | if (pad) write_ascii_char((x)+(y * 30), '0'); |
255 | if (pad) write_ascii_char((x)+(y * 30), '0'); |
213 | if (b > 0 || started || num == 1) { |
256 | if (b > 0 || started || num == 1) { |
214 | if (!started) write_char((x - 1)+(y * 30), 0x49); |
257 | if (!started) write_char((x - 1)+(y * 30), 0x49); |
215 | write_ascii_char((x++)+(y * 30), '0' + b); |
258 | write_ascii_char((x++)+(y * 30), '0' + b); |
216 | started = 1; |
259 | started = 1; |
217 | } else { |
260 | } else { |
218 | write_ascii_char((x++)+(y * 30), 0); |
261 | write_ascii_char((x++)+(y * 30), 0); |
219 | } |
262 | } |
220 | number -= b * num; |
263 | number -= b * num; |
221 | 264 | ||
222 | num /= 10; |
265 | num /= 10; |
223 | } |
266 | } |
224 | } else { |
267 | } else { |
225 | write_char((x)+(y * 30), 0); |
268 | write_char((x)+(y * 30), 0); |
226 | write_ndigit_number_u(x, y, number, num, pad); |
269 | write_ndigit_number_u(x, y, number, num, pad); |
227 | } |
270 | } |
228 | } |
271 | } |
229 | 272 | ||
230 | /** |
273 | /** |
231 | * Write only some digits of a unsigned <number> at <x>/<y> to MAX7456 display memory |
274 | * Write only some digits of a unsigned <number> at <x>/<y> to MAX7456 display memory |
232 | * as /10th of the value |
275 | * as /10th of the value |
233 | * <num> represents the largest multiple of 10 that will still be displayable as |
276 | * <num> represents the largest multiple of 10 that will still be displayable as |
234 | * the first digit, so num = 10 will be 0-99 and so on |
277 | * the first digit, so num = 10 will be 0-99 and so on |
235 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
278 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
236 | */ |
279 | */ |
237 | void write_ndigit_number_u_10th(uint8_t x, uint8_t y, uint16_t number, int16_t num, uint8_t pad) { |
280 | void write_ndigit_number_u_10th(uint8_t x, uint8_t y, uint16_t number, int16_t num, uint8_t pad) { |
238 | // if number is largar than 99[..]9 we must decrease it |
281 | // if number is largar than 99[..]9 we must decrease it |
239 | while (number >= (num * 10)) { |
282 | while (number >= (num * 10)) { |
240 | number -= num * 10; |
283 | number -= num * 10; |
241 | } |
284 | } |
242 | 285 | ||
243 | 286 | ||
244 | uint8_t started = 0; |
287 | uint8_t started = 0; |
245 | while (num > 0) { |
288 | while (num > 0) { |
246 | uint8_t b = number / num; |
289 | uint8_t b = number / num; |
247 | if (b > 0 || started || num == 1) { |
290 | if (b > 0 || started || num == 1) { |
248 | if ((num / 10) == 0) { |
291 | if ((num / 10) == 0) { |
249 | if (!started) write_ascii_char((x - 1)+(y * 30), '0'); |
292 | if (!started) write_ascii_char((x - 1)+(y * 30), '0'); |
250 | write_char((x++)+(y * 30), 65); // decimal point |
293 | write_char((x++)+(y * 30), 65); // decimal point |
251 | } |
294 | } |
252 | write_ascii_char((x++)+(y * 30), '0' + b); |
295 | write_ascii_char((x++)+(y * 30), '0' + b); |
253 | started = 1; |
296 | started = 1; |
254 | } else { |
297 | } else { |
255 | if (pad) write_ascii_char((x++)+(y * 30), '0'); |
298 | if (pad) write_ascii_char((x++)+(y * 30), '0'); |
256 | else write_ascii_char((x++)+(y * 30), ' '); |
299 | else write_ascii_char((x++)+(y * 30), ' '); |
257 | } |
300 | } |
258 | number -= b * num; |
301 | number -= b * num; |
259 | 302 | ||
260 | num /= 10; |
303 | num /= 10; |
261 | } |
304 | } |
262 | } |
305 | } |
263 | 306 | ||
264 | /** |
307 | /** |
265 | * Write only some digits of a signed <number> at <x>/<y> to MAX7456 display memory |
308 | * Write only some digits of a signed <number> at <x>/<y> to MAX7456 display memory |
266 | * as /10th of the value |
309 | * as /10th of the value |
267 | * <num> represents the largest multiple of 10 that will still be displayable as |
310 | * <num> represents the largest multiple of 10 that will still be displayable as |
268 | * the first digit, so num = 10 will be 0-99 and so on |
311 | * the first digit, so num = 10 will be 0-99 and so on |
269 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
312 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
270 | */ |
313 | */ |
271 | void write_ndigit_number_s_10th(uint8_t x, uint8_t y, int16_t number, int16_t num, uint8_t pad) { |
314 | void write_ndigit_number_s_10th(uint8_t x, uint8_t y, int16_t number, int16_t num, uint8_t pad) { |
272 | if (((uint16_t) number) > 32767) { |
315 | if (((uint16_t) number) > 32767) { |
273 | number = number - 65536; |
316 | number = number - 65536; |
274 | num *= -1; |
317 | num *= -1; |
275 | 318 | ||
276 | // if number is smaller than -99[..]9 we must increase it |
319 | // if number is smaller than -99[..]9 we must increase it |
277 | while (number <= (num * 10)) { |
320 | while (number <= (num * 10)) { |
278 | number -= num * 10; |
321 | number -= num * 10; |
279 | } |
322 | } |
280 | 323 | ||
281 | uint8_t started = 0; |
324 | uint8_t started = 0; |
282 | 325 | ||
283 | while (num < 0) { |
326 | while (num < 0) { |
284 | uint8_t b = number / num; |
327 | uint8_t b = number / num; |
285 | if (pad) write_ascii_char((x)+(y * 30), '0'); |
328 | if (pad) write_ascii_char((x)+(y * 30), '0'); |
286 | if (b > 0 || started || num == 1) { |
329 | if (b > 0 || started || num == 1) { |
287 | if ((num / 10) == 0) { |
330 | if ((num / 10) == 0) { |
288 | if (!started) { |
331 | if (!started) { |
289 | write_ascii_char((x - 2)+(y * 30), '-'); |
332 | write_ascii_char((x - 2)+(y * 30), '-'); |
290 | write_ascii_char((x - 1)+(y * 30), '0'); |
333 | write_ascii_char((x - 1)+(y * 30), '0'); |
291 | } |
334 | } |
292 | write_char((x++)+(y * 30), 65); // decimal point |
335 | write_char((x++)+(y * 30), 65); // decimal point |
293 | } else if (!started) { |
336 | } else if (!started) { |
294 | write_char((x - 1)+(y * 30), 0x49); // minus |
337 | write_char((x - 1)+(y * 30), 0x49); // minus |
295 | } |
338 | } |
296 | write_ascii_char((x++)+(y * 30), '0' + b); |
339 | write_ascii_char((x++)+(y * 30), '0' + b); |
297 | started = 1; |
340 | started = 1; |
298 | } else { |
341 | } else { |
299 | write_ascii_char((x++)+(y * 30), 0); |
342 | write_ascii_char((x++)+(y * 30), 0); |
300 | } |
343 | } |
301 | number -= b * num; |
344 | number -= b * num; |
302 | 345 | ||
303 | num /= 10; |
346 | num /= 10; |
304 | } |
347 | } |
305 | } else { |
348 | } else { |
306 | write_char((x)+(y * 30), 0); |
349 | write_char((x)+(y * 30), 0); |
307 | write_ndigit_number_u_10th(x, y, number, num, pad); |
350 | write_ndigit_number_u_10th(x, y, number, num, pad); |
308 | } |
351 | } |
309 | } |
352 | } |
310 | 353 | ||
311 | /** |
354 | /** |
312 | * write <seconds> as human readable time at <x>/<y> to MAX7456 display mem |
355 | * write <seconds> as human readable time at <x>/<y> to MAX7456 display mem |
313 | */ |
356 | */ |
314 | void write_time(uint8_t x, uint8_t y, uint16_t seconds) { |
357 | void write_time(uint8_t x, uint8_t y, uint16_t seconds) { |
315 | uint16_t min = seconds / 60; |
358 | uint16_t min = seconds / 60; |
316 | seconds -= min * 60; |
359 | seconds -= min * 60; |
317 | write_ndigit_number_u(x, y, min, 100, 0); |
360 | write_ndigit_number_u(x, y, min, 100, 0); |
318 | write_char_xy(x + 3, y, 68); |
361 | write_char_xy(x + 3, y, 68); |
319 | write_ndigit_number_u(x + 4, y, seconds, 10, 1); |
362 | write_ndigit_number_u(x + 4, y, seconds, 10, 1); |
320 | } |
363 | } |
321 | 364 | ||
322 | /** |
365 | /** |
323 | * for testing write all chars to screen |
- | |
324 | */ |
- | |
325 | void write_all_chars() { |
- | |
326 | uint16_t x = 3, y = 2, t = 0; |
- | |
327 | while (t < 256) { |
- | |
328 | write_char_xy(x++, y, t++); |
- | |
329 | if (x > 25) { |
- | |
330 | y++; |
- | |
331 | x = 3; |
- | |
332 | } |
- | |
333 | } |
- | |
334 | } |
- | |
335 | - | ||
336 | /** |
- | |
337 | * let the MAX7456 learn a new character at <number> |
- | |
338 | * with <data>. |
- | |
339 | */ |
- | |
340 | void learn_char(uint8_t number, unsigned char* data) { |
- | |
341 | // select character to write (CMAH) |
- | |
342 | spi_send_byte(0x09, number); |
- | |
343 | - | ||
344 | for (uint8_t i = 0; i < 54; i++) { |
- | |
345 | // select 4pixel byte of char (CMAL) |
- | |
346 | spi_send_byte(0x0A, i); |
- | |
347 | - | ||
348 | // write 4pixel byte of char (CMDI) |
- | |
349 | spi_send_byte(0x0B, data[i]); |
- | |
350 | } |
- | |
351 | - | ||
352 | // write to the NVM array from the shadow RAM (CMM) |
- | |
353 | spi_send_byte(0x08, 0b10100000); |
- | |
354 | - | ||
355 | // according to maxim writing to nvram takes about 12ms, lets wait longer |
- | |
356 | _delay_ms(120); |
- | |
357 | } |
- | |
358 | - | ||
359 | /** |
- | |
360 | * wirte a <position> at <x>/<y> assuming it is a gps position for long-/latitude |
366 | * wirte a <position> at <x>/<y> assuming it is a gps position for long-/latitude |
361 | */ |
367 | */ |
362 | void write_gps_pos(uint8_t x, uint8_t y, int32_t position) { |
368 | void write_gps_pos(uint8_t x, uint8_t y, int32_t position) { |
363 | if (position < 0) { |
369 | if (position < 0) { |
364 | position ^= ~0; |
370 | position ^= ~0; |
365 | position++; |
371 | position++; |
366 | write_char_xy(x++, y, 0x49); // minus |
372 | write_char_xy(x++, y, 0x49); // minus |
367 | } else { |
373 | } else { |
368 | write_char_xy(x++, y, 0); // clear ('+' would be nice, maybe later) |
374 | write_char_xy(x++, y, 0); // clear ('+' would be nice, maybe later) |
369 | } |
375 | } |
370 | write_ndigit_number_u(x, y, (uint16_t) (position / (int32_t) 10000000), 100, 1); |
376 | write_ndigit_number_u(x, y, (uint16_t) (position / (int32_t) 10000000), 100, 1); |
371 | write_char_xy(x + 3, y, 65); // decimal point |
377 | write_char_xy(x + 3, y, 65); // decimal point |
372 | position = position - ((position / (int32_t) 10000000) * (int32_t) 10000000); |
378 | position = position - ((position / (int32_t) 10000000) * (int32_t) 10000000); |
373 | write_ndigit_number_u(x + 4, y, (uint16_t) (position / (int32_t) 1000), 1000, 1); |
379 | write_ndigit_number_u(x + 4, y, (uint16_t) (position / (int32_t) 1000), 1000, 1); |
374 | position = position - ((uint16_t) (position / (int32_t) 1000) * (int32_t) 1000); |
380 | position = position - ((uint16_t) (position / (int32_t) 1000) * (int32_t) 1000); |
375 | write_ndigit_number_u(x + 8, y, (uint16_t) position, 100, 1); |
381 | write_ndigit_number_u(x + 8, y, (uint16_t) position, 100, 1); |
376 | write_char_xy(x + 11, y, 0xD0); // degree symbol |
382 | write_char_xy(x + 11, y, 0xD0); // degree symbol |
377 | } |
383 | } |
- | 384 | ||
- | 385 | #endif |
|
378 | 386 |