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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 "max7456_software_spi.h" |
24 | #include "max7456_software_spi.h" |
25 | 25 | ||
26 | /* ########################################################################## |
26 | /* ########################################################################## |
27 | * MAX7456 SPI & Display stuff |
27 | * MAX7456 SPI & Display stuff |
28 | * ##########################################################################*/ |
28 | * ##########################################################################*/ |
29 | 29 | ||
30 | /** |
30 | /** |
31 | * Send a byte through SPI |
31 | * Send a byte through SPI |
32 | */ |
32 | */ |
33 | void spi_send(uint8_t byte) { |
33 | void spi_send(uint8_t byte) { |
34 | for (int8_t i = 7; i >= 0; i--) { |
34 | for (int8_t i = 7; i >= 0; i--) { |
35 | if (((byte >> i) & 1)) { |
35 | if (((byte >> i) & 1)) { |
36 | MAX_SDIN_HIGH |
36 | MAX_SDIN_HIGH |
37 | } else { |
37 | } else { |
38 | MAX_SDIN_LOW |
38 | MAX_SDIN_LOW |
39 | } |
39 | } |
40 | MAX_SCLK_HIGH |
40 | MAX_SCLK_HIGH |
41 | MAX_SCLK_LOW |
41 | MAX_SCLK_LOW |
42 | } |
42 | } |
43 | } |
43 | } |
44 | 44 | ||
45 | /** |
45 | /** |
46 | * Send <byte> to <address> of MAX7456 |
46 | * Send <byte> to <address> of MAX7456 |
47 | */ |
47 | */ |
48 | void spi_send_byte(uint8_t address, uint8_t byte) { |
48 | void spi_send_byte(uint8_t address, uint8_t byte) { |
49 | // start sending |
49 | // start sending |
50 | MAX_CS_LOW |
50 | MAX_CS_LOW |
51 | 51 | ||
52 | spi_send(address); |
52 | spi_send(address); |
53 | spi_send(byte); |
53 | spi_send(byte); |
54 | 54 | ||
55 | // end sending |
55 | // end sending |
56 | MAX_CS_HIGH |
56 | MAX_CS_HIGH |
57 | } |
57 | } |
58 | 58 | ||
59 | /** |
59 | /** |
60 | * write a <character> to <address> of MAX7456 display memory |
60 | * write a <character> to <address> of MAX7456 display memory |
61 | */ |
61 | */ |
62 | void write_char(uint16_t address, char character) { |
62 | void write_char(uint16_t address, char character) { |
63 | spi_send_byte(0x05, (address & 0xFF00) >> 8); // DMAH |
63 | spi_send_byte(0x05, (address & 0xFF00) >> 8); // DMAH |
64 | spi_send_byte(0x06, (address & 0x00FF)); // DMAL |
64 | spi_send_byte(0x06, (address & 0x00FF)); // DMAL |
65 | spi_send_byte(0x07, character); // DMDI |
65 | spi_send_byte(0x07, character); // DMDI |
66 | } |
66 | } |
67 | 67 | ||
68 | /** |
68 | /** |
69 | * write a character <attribute> to <address> of MAX7456 display memory |
69 | * write a character <attribute> to <address> of MAX7456 display memory |
70 | */ |
70 | */ |
71 | void write_char_att(uint16_t address, char attribute) { |
71 | void write_char_att(uint16_t address, char attribute) { |
72 | // the only important part is that the DMAH[1] is set |
72 | // the only important part is that the DMAH[1] is set |
73 | // so we add 2 which binary is the 2nd lowest byte |
73 | // so we add 2 which binary is the 2nd lowest byte |
74 | spi_send_byte(0x05, ((address & 0xFF00) >> 8) | 2); // DMAH |
74 | spi_send_byte(0x05, ((address & 0xFF00) >> 8) | 2); // DMAH |
75 | spi_send_byte(0x06, (address & 0x00FF)); // DMAL |
75 | spi_send_byte(0x06, (address & 0x00FF)); // DMAL |
76 | spi_send_byte(0x07, attribute); // DMDI |
76 | spi_send_byte(0x07, attribute); // DMDI |
77 | } |
77 | } |
78 | 78 | ||
79 | /** |
79 | /** |
80 | * write a <character> at <x>/<y> to MAX7456 display memory |
80 | * write a <character> at <x>/<y> to MAX7456 display memory |
81 | */ |
81 | */ |
82 | void write_char_xy(uint8_t x, uint8_t y, char character) { |
82 | void write_char_xy(uint8_t x, uint8_t y, char character) { |
83 | uint16_t address = y * 30 + x; |
83 | uint16_t address = y * 30 + x; |
84 | write_char(address, character); |
84 | write_char(address, character); |
85 | } |
85 | } |
86 | 86 | ||
87 | /** |
87 | /** |
88 | * write a character <attribute> at <x>/<y> to MAX7456 display memory |
88 | * write a character <attribute> at <x>/<y> to MAX7456 display memory |
89 | */ |
89 | */ |
90 | void write_char_att_xy(uint8_t x, uint8_t y, char attribute) { |
90 | void write_char_att_xy(uint8_t x, uint8_t y, char attribute) { |
91 | uint16_t address = y * 30 + x; |
91 | uint16_t address = y * 30 + x; |
92 | write_char_att(address, attribute); |
92 | write_char_att(address, attribute); |
93 | } |
93 | } |
94 | 94 | ||
95 | /** |
95 | /** |
96 | * clear display memory |
96 | * clear display memory |
97 | * (also sets 8bit mode) |
97 | * (also sets 8bit mode) |
98 | */ |
98 | */ |
99 | void clear(void) { |
99 | void clear(void) { |
100 | /*uint16_t memory_address = 0; |
100 | /*uint16_t memory_address = 0; |
101 | for (unsigned int a = 0; a < 480; a++) { |
101 | for (unsigned int a = 0; a < 480; a++) { |
102 | write_char(memory_address++, 0); |
102 | write_char(memory_address++, 0); |
103 | }*/ |
103 | }*/ |
104 | // clear all display-mem (DMM) |
104 | // clear all display-mem (DMM) |
105 | spi_send_byte(0x04, 0b01000100); |
105 | spi_send_byte(0x04, 0b01000100); |
106 | 106 | ||
107 | // clearing takes 12uS according to maxim so lets wait longer |
107 | // clearing takes 12uS according to maxim so lets wait longer |
108 | _delay_us(20); |
108 | _delay_us(20); |
109 | } |
109 | } |
110 | 110 | ||
111 | /** |
111 | /** |
112 | * write an ascii <character> to <address> of MAX7456 display memory |
112 | * write an ascii <character> to <address> of MAX7456 display memory |
113 | */ |
113 | */ |
114 | void write_ascii_char(uint16_t address, char c) { |
114 | void write_ascii_char(uint16_t address, char c) { |
115 | if (c == 32) c = 0; // remap space |
115 | if (c == 32) c = 0; // remap space |
116 | else if (c > 48 && c <= 57) c -= 48; // remap numbers |
116 | else if (c > 48 && c <= 57) c -= 48; // remap numbers |
117 | else if (c == '0') c = 10; // remap zero |
117 | else if (c == '0') c = 10; // remap zero |
118 | else if (c >= 65 && c <= 90) c -= 54; // remap big letters |
118 | else if (c >= 65 && c <= 90) c -= 54; // remap big letters |
119 | else if (c >= 97 && c <= 122) c -= 60; // remap small letters |
119 | else if (c >= 97 && c <= 122) c -= 60; // remap small letters |
120 | else if (c == '(') c = 63; // remap |
120 | else if (c == '(') c = 63; // remap |
121 | else if (c == ')') c = 64; // remap |
121 | else if (c == ')') c = 64; // remap |
122 | else if (c == '.') c = 65; // remap |
122 | else if (c == '.') c = 65; // remap |
123 | else if (c == '?') c = 66; // remap |
123 | else if (c == '?') c = 66; // remap |
124 | else if (c == ';') c = 67; // remap |
124 | else if (c == ';') c = 67; // remap |
125 | else if (c == ':') c = 68; // remap |
125 | else if (c == ':') c = 68; // remap |
126 | else if (c == ',') c = 69; // remap |
126 | else if (c == ',') c = 69; // remap |
127 | else if (c == '\'') c = 70; // remap |
127 | else if (c == '\'') c = 70; // remap |
128 | else if (c == '/') c = 71; // remap |
128 | else if (c == '/') c = 71; // remap |
129 | else if (c == '"') c = 72; // remap |
129 | else if (c == '"') c = 72; // remap |
130 | else if (c == '-') c = 73; // remap minus |
130 | else if (c == '-') c = 73; // remap minus |
131 | else if (c == '<') c = 74; // remap |
131 | else if (c == '<') c = 74; // remap |
132 | else if (c == '>') c = 75; // remap |
132 | else if (c == '>') c = 75; // remap |
133 | else if (c == '@') c = 76; // remap |
133 | else if (c == '@') c = 76; // remap |
134 | write_char(address, c); |
134 | write_char(address, c); |
135 | } |
135 | } |
136 | 136 | ||
137 | /** |
137 | /** |
138 | * write an ascii <string> at <x>/<y> to MAX7456 display memory |
138 | * write an ascii <string> at <x>/<y> to MAX7456 display memory |
139 | */ |
139 | */ |
140 | void write_ascii_string(uint8_t x, uint8_t y, char *string) { |
140 | void write_ascii_string(uint8_t x, uint8_t y, char *string) { |
141 | while (*string) { |
141 | while (*string) { |
142 | write_ascii_char(((x++)+(y * 30)), *string); |
142 | write_ascii_char(((x++)+(y * 30)), *string); |
143 | string++; |
143 | string++; |
144 | } |
144 | } |
145 | } |
145 | } |
146 | 146 | ||
147 | /** |
147 | /** |
148 | * write an ascii <string> from progmen at <x>/<y> to MAX7456 display memory |
148 | * write an ascii <string> from progmen at <x>/<y> to MAX7456 display memory |
149 | */ |
149 | */ |
150 | void write_ascii_string_pgm(uint8_t x, uint8_t y, char *string) { |
150 | void write_ascii_string_pgm(uint8_t x, uint8_t y, char *string) { |
151 | while (pgm_read_byte(string) != 0x00) |
151 | while (pgm_read_byte(string) != 0x00) |
152 | write_ascii_char(((x++)+(y * 30)), pgm_read_byte(string++)); |
152 | write_ascii_char(((x++)+(y * 30)), pgm_read_byte(string++)); |
153 | } |
153 | } |
154 | 154 | ||
155 | /** |
155 | /** |
156 | * write an <string> from progmen at <x>/<y> downwards to MAX7456 display memory |
156 | * write an <string> from progmen at <x>/<y> downwards to MAX7456 display memory |
157 | */ |
157 | */ |
158 | void write_string_pgm_down(uint8_t x, uint8_t y, char *string, uint8_t length) { |
158 | void write_string_pgm_down(uint8_t x, uint8_t y, char *string, uint8_t length) { |
159 | while (length--) |
159 | while (length--) |
160 | write_char((x+(y++ * 30)), pgm_read_byte(string++)); |
160 | write_char((x+(y++ * 30)), pgm_read_byte(string++)); |
161 | } |
161 | } |
162 | 162 | ||
163 | /** |
163 | /** |
164 | * Write only some digits of a unsigned <number> at <x>/<y> to MAX7456 display memory |
164 | * 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 |
165 | * <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 |
166 | * 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 |
167 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
168 | */ |
168 | */ |
169 | void write_ndigit_number_u(uint8_t x, uint8_t y, uint16_t number, int16_t num, uint8_t pad) { |
169 | 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 |
170 | // if number is largar than 99[..]9 we must decrease it |
171 | while (number >= (num * 10)) { |
171 | while (number >= (num * 10)) { |
172 | number -= num * 10; |
172 | number -= num * 10; |
173 | } |
173 | } |
174 | 174 | ||
175 | uint8_t started = 0; |
175 | uint8_t started = 0; |
176 | 176 | ||
177 | while (num > 0) { |
177 | while (num > 0) { |
178 | uint8_t b = number / num; |
178 | uint8_t b = number / num; |
179 | if (b > 0 || started || num == 1) { |
179 | if (b > 0 || started || num == 1) { |
180 | write_ascii_char((x++)+(y * 30), '0' + b); |
180 | write_ascii_char((x++)+(y * 30), '0' + b); |
181 | started = 1; |
181 | started = 1; |
182 | } else { |
182 | } else { |
183 | if (pad) write_ascii_char((x++)+(y * 30), '0'); |
183 | if (pad) write_ascii_char((x++)+(y * 30), '0'); |
184 | else write_ascii_char((x++)+(y * 30), 0); |
184 | else write_ascii_char((x++)+(y * 30), 0); |
185 | } |
185 | } |
186 | number -= b * num; |
186 | number -= b * num; |
187 | 187 | ||
188 | num /= 10; |
188 | num /= 10; |
189 | } |
189 | } |
190 | } |
190 | } |
191 | 191 | ||
192 | /** |
192 | /** |
193 | * Write only some digits of a signed <number> at <x>/<y> to MAX7456 display memory |
193 | * 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 |
194 | * <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 |
195 | * 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 |
196 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
197 | */ |
197 | */ |
198 | void write_ndigit_number_s(uint8_t x, uint8_t y, int16_t number, int16_t num, uint8_t pad) { |
198 | 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) { |
199 | if (((uint16_t) number) > 32767) { |
200 | number = number - 65536; |
200 | number = number - 65536; |
201 | num *= -1; |
201 | num *= -1; |
202 | 202 | ||
203 | // if number is smaller than -99[..]9 we must increase it |
203 | // if number is smaller than -99[..]9 we must increase it |
204 | while (number <= (num * 10)) { |
204 | while (number <= (num * 10)) { |
205 | number -= num * 10; |
205 | number -= num * 10; |
206 | } |
206 | } |
207 | 207 | ||
208 | uint8_t started = 0; |
208 | uint8_t started = 0; |
209 | 209 | ||
210 | while (num < 0) { |
210 | while (num < 0) { |
211 | uint8_t b = number / num; |
211 | uint8_t b = number / num; |
212 | if (pad) write_ascii_char((x)+(y * 30), '0'); |
212 | if (pad) write_ascii_char((x)+(y * 30), '0'); |
213 | if (b > 0 || started || num == 1) { |
213 | if (b > 0 || started || num == 1) { |
214 | if (!started) write_char((x - 1)+(y * 30), 0x49); |
214 | if (!started) write_char((x - 1)+(y * 30), 0x49); |
215 | write_ascii_char((x++)+(y * 30), '0' + b); |
215 | write_ascii_char((x++)+(y * 30), '0' + b); |
216 | started = 1; |
216 | started = 1; |
217 | } else { |
217 | } else { |
218 | write_ascii_char((x++)+(y * 30), 0); |
218 | write_ascii_char((x++)+(y * 30), 0); |
219 | } |
219 | } |
220 | number -= b * num; |
220 | number -= b * num; |
221 | 221 | ||
222 | num /= 10; |
222 | num /= 10; |
223 | } |
223 | } |
224 | } else { |
224 | } else { |
225 | write_char((x)+(y * 30), 0); |
225 | write_char((x)+(y * 30), 0); |
226 | write_ndigit_number_u(x, y, number, num, pad); |
226 | write_ndigit_number_u(x, y, number, num, pad); |
227 | } |
227 | } |
228 | } |
228 | } |
229 | 229 | ||
230 | /** |
230 | /** |
231 | * Write only some digits of a unsigned <number> at <x>/<y> to MAX7456 display memory |
231 | * Write only some digits of a unsigned <number> at <x>/<y> to MAX7456 display memory |
232 | * as /10th of the value |
232 | * as /10th of the value |
233 | * <num> represents the largest multiple of 10 that will still be displayable as |
233 | * <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 |
234 | * 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 |
235 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
236 | */ |
236 | */ |
237 | void write_ndigit_number_u_10th(uint8_t x, uint8_t y, uint16_t number, int16_t num, uint8_t pad) { |
237 | 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 |
238 | // if number is largar than 99[..]9 we must decrease it |
239 | while (number >= (num * 10)) { |
239 | while (number >= (num * 10)) { |
240 | number -= num * 10; |
240 | number -= num * 10; |
241 | } |
241 | } |
242 | 242 | ||
243 | 243 | ||
244 | uint8_t started = 0; |
244 | uint8_t started = 0; |
245 | while (num > 0) { |
245 | while (num > 0) { |
246 | uint8_t b = number / num; |
246 | uint8_t b = number / num; |
247 | if (b > 0 || started || num == 1) { |
247 | if (b > 0 || started || num == 1) { |
248 | if ((num / 10) == 0) { |
248 | if ((num / 10) == 0) { |
249 | if (!started) write_ascii_char((x - 1)+(y * 30), '0'); |
249 | if (!started) write_ascii_char((x - 1)+(y * 30), '0'); |
250 | write_char((x++)+(y * 30), 65); // decimal point |
250 | write_char((x++)+(y * 30), 65); // decimal point |
251 | } |
251 | } |
252 | write_ascii_char((x++)+(y * 30), '0' + b); |
252 | write_ascii_char((x++)+(y * 30), '0' + b); |
253 | started = 1; |
253 | started = 1; |
254 | } else { |
254 | } else { |
255 | if (pad) write_ascii_char((x++)+(y * 30), '0'); |
255 | if (pad) write_ascii_char((x++)+(y * 30), '0'); |
256 | else write_ascii_char((x++)+(y * 30), ' '); |
256 | else write_ascii_char((x++)+(y * 30), ' '); |
257 | } |
257 | } |
258 | number -= b * num; |
258 | number -= b * num; |
259 | 259 | ||
260 | num /= 10; |
260 | num /= 10; |
261 | } |
261 | } |
262 | } |
262 | } |
263 | 263 | ||
264 | /** |
264 | /** |
265 | * Write only some digits of a signed <number> at <x>/<y> to MAX7456 display memory |
265 | * Write only some digits of a signed <number> at <x>/<y> to MAX7456 display memory |
266 | * as /10th of the value |
266 | * as /10th of the value |
267 | * <num> represents the largest multiple of 10 that will still be displayable as |
267 | * <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 |
268 | * 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 |
269 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
270 | */ |
270 | */ |
271 | void write_ndigit_number_s_10th(uint8_t x, uint8_t y, int16_t number, int16_t num, uint8_t pad) { |
271 | 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) { |
272 | if (((uint16_t) number) > 32767) { |
273 | number = number - 65536; |
273 | number = number - 65536; |
274 | num *= -1; |
274 | num *= -1; |
275 | 275 | ||
276 | // if number is smaller than -99[..]9 we must increase it |
276 | // if number is smaller than -99[..]9 we must increase it |
277 | while (number <= (num * 10)) { |
277 | while (number <= (num * 10)) { |
278 | number -= num * 10; |
278 | number -= num * 10; |
279 | } |
279 | } |
280 | 280 | ||
281 | uint8_t started = 0; |
281 | uint8_t started = 0; |
282 | 282 | ||
283 | while (num < 0) { |
283 | while (num < 0) { |
284 | uint8_t b = number / num; |
284 | uint8_t b = number / num; |
285 | if (pad) write_ascii_char((x)+(y * 30), '0'); |
285 | if (pad) write_ascii_char((x)+(y * 30), '0'); |
286 | if (b > 0 || started || num == 1) { |
286 | if (b > 0 || started || num == 1) { |
287 | if ((num / 10) == 0) { |
287 | if ((num / 10) == 0) { |
288 | if (!started) { |
288 | if (!started) { |
289 | write_ascii_char((x - 2)+(y * 30), '-'); |
289 | write_ascii_char((x - 2)+(y * 30), '-'); |
290 | write_ascii_char((x - 1)+(y * 30), '0'); |
290 | write_ascii_char((x - 1)+(y * 30), '0'); |
291 | } |
291 | } |
292 | write_char((x++)+(y * 30), 65); // decimal point |
292 | write_char((x++)+(y * 30), 65); // decimal point |
293 | } else if (!started) { |
293 | } else if (!started) { |
294 | write_char((x - 1)+(y * 30), 0x49); // minus |
294 | write_char((x - 1)+(y * 30), 0x49); // minus |
295 | } |
295 | } |
296 | write_ascii_char((x++)+(y * 30), '0' + b); |
296 | write_ascii_char((x++)+(y * 30), '0' + b); |
297 | started = 1; |
297 | started = 1; |
298 | } else { |
298 | } else { |
299 | write_ascii_char((x++)+(y * 30), 0); |
299 | write_ascii_char((x++)+(y * 30), 0); |
300 | } |
300 | } |
301 | number -= b * num; |
301 | number -= b * num; |
302 | 302 | ||
303 | num /= 10; |
303 | num /= 10; |
304 | } |
304 | } |
305 | } else { |
305 | } else { |
306 | write_char((x)+(y * 30), 0); |
306 | write_char((x)+(y * 30), 0); |
307 | write_ndigit_number_u_10th(x, y, number, num, pad); |
307 | write_ndigit_number_u_10th(x, y, number, num, pad); |
308 | } |
308 | } |
309 | } |
309 | } |
310 | 310 | ||
311 | /** |
311 | /** |
312 | * write <seconds> as human readable time at <x>/<y> to MAX7456 display mem |
312 | * write <seconds> as human readable time at <x>/<y> to MAX7456 display mem |
313 | */ |
313 | */ |
314 | void write_time(uint8_t x, uint8_t y, uint16_t seconds) { |
314 | void write_time(uint8_t x, uint8_t y, uint16_t seconds) { |
315 | uint16_t min = seconds / 60; |
315 | uint16_t min = seconds / 60; |
316 | seconds -= min * 60; |
316 | seconds -= min * 60; |
317 | write_ndigit_number_u(x, y, min, 100, 0); |
317 | write_ndigit_number_u(x, y, min, 100, 0); |
318 | write_char_xy(x + 3, y, 68); |
318 | write_char_xy(x + 3, y, 68); |
319 | write_ndigit_number_u(x + 4, y, seconds, 10, 1); |
319 | write_ndigit_number_u(x + 4, y, seconds, 10, 1); |
320 | } |
320 | } |
321 | 321 | ||
322 | /** |
322 | /** |
323 | * for testing write all chars to screen |
323 | * for testing write all chars to screen |
324 | */ |
324 | */ |
325 | void write_all_chars() { |
325 | void write_all_chars() { |
326 | uint16_t x = 3, y = 2, t = 0; |
326 | uint16_t x = 3, y = 2, t = 0; |
327 | while (t < 256) { |
327 | while (t < 256) { |
328 | write_char_xy(x++, y, t++); |
328 | write_char_xy(x++, y, t++); |
329 | if (x > 25) { |
329 | if (x > 25) { |
330 | y++; |
330 | y++; |
331 | x = 3; |
331 | x = 3; |
332 | } |
332 | } |
333 | } |
333 | } |
334 | } |
334 | } |
335 | 335 | ||
336 | /** |
336 | /** |
337 | * let the MAX7456 learn a new character at <number> |
337 | * let the MAX7456 learn a new character at <number> |
338 | * with <data>. |
338 | * with <data>. |
339 | */ |
339 | */ |
340 | void learn_char(uint8_t number, unsigned char* data) { |
340 | void learn_char(uint8_t number, unsigned char* data) { |
341 | // select character to write (CMAH) |
341 | // select character to write (CMAH) |
342 | spi_send_byte(0x09, number); |
342 | spi_send_byte(0x09, number); |
343 | 343 | ||
344 | for (uint8_t i = 0; i < 54; i++) { |
344 | for (uint8_t i = 0; i < 54; i++) { |
345 | // select 4pixel byte of char (CMAL) |
345 | // select 4pixel byte of char (CMAL) |
346 | spi_send_byte(0x0A, i); |
346 | spi_send_byte(0x0A, i); |
347 | 347 | ||
348 | // write 4pixel byte of char (CMDI) |
348 | // write 4pixel byte of char (CMDI) |
349 | spi_send_byte(0x0B, data[i]); |
349 | spi_send_byte(0x0B, data[i]); |
350 | } |
350 | } |
351 | 351 | ||
352 | // write to the NVM array from the shadow RAM (CMM) |
352 | // write to the NVM array from the shadow RAM (CMM) |
353 | spi_send_byte(0x08, 0b10100000); |
353 | spi_send_byte(0x08, 0b10100000); |
354 | 354 | ||
355 | // according to maxim writing to nvram takes about 12ms, lets wait longer |
355 | // according to maxim writing to nvram takes about 12ms, lets wait longer |
356 | _delay_ms(120); |
356 | _delay_ms(120); |
357 | } |
357 | } |
- | 358 | ||
- | 359 | /** |
|
- | 360 | * wirte a <position> at <x>/<y> assuming it is a gps position for long-/latitude |
|
- | 361 | */ |
|
- | 362 | void write_gps_pos(uint8_t x, uint8_t y, int32_t position) { |
|
- | 363 | if (((uint32_t) position > 2147483647)) { |
|
- | 364 | position = position - 4294967295; |
|
- | 365 | write_char_xy(x++, y, 0x49); // minus |
|
- | 366 | } else { |
|
- | 367 | write_char_xy(x++, y, 0); // clear ('+' would be nice, maybe later) |
|
- | 368 | } |
|
- | 369 | write_ndigit_number_u(x, y, (uint16_t) (position / (int32_t) 10000000), 100, 1); |
|
- | 370 | write_char_xy(x + 3, y, 65); // decimal point |
|
- | 371 | position = position - ((position / (int32_t) 10000000) * (int32_t) 10000000); |
|
- | 372 | write_ndigit_number_u(x + 4, y, (uint16_t) (position / (int32_t) 1000), 1000, 1); |
|
- | 373 | position = position - ((uint16_t) (position / (int32_t) 1000) * (int32_t) 1000); |
|
- | 374 | write_ndigit_number_u(x + 8, y, (uint16_t) position, 100, 1); |
|
- | 375 | write_char_xy(x + 11, y, 0xD0); // degree symbol |
|
- | 376 | } |
|
358 | 377 |