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331 | cascade | 1 | /**************************************************************************** |
1866 | - | 2 | * Copyright (C) 2009-2013 by Claas Anders "CaScAdE" Rathje * |
331 | cascade | 3 | * admiralcascade@gmail.com * |
4 | * Project-URL: http://www.mylifesucks.de/oss/c-osd/ * |
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5 | * * |
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6 | * This program is free software; you can redistribute it and/or modify * |
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7 | * it under the terms of the GNU General Public License as published by * |
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8 | * the Free Software Foundation; either version 2 of the License. * |
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9 | * * |
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10 | * This program is distributed in the hope that it will be useful, * |
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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13 | * GNU General Public License for more details. * |
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14 | * * |
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15 | * You should have received a copy of the GNU General Public License * |
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16 | * along with this program; if not, write to the * |
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17 | * Free Software Foundation, Inc., * |
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18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
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19 | ****************************************************************************/ |
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20 | |||
800 | - | 21 | #include "main.h" |
346 | cascade | 22 | #include <avr/io.h> |
23 | #include <util/delay.h> |
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24 | #include <avr/pgmspace.h> |
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519 | cascade | 25 | #include <string.h> |
26 | #include <stdlib.h> |
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331 | cascade | 27 | #include "max7456_software_spi.h" |
932 | - | 28 | #include "usart0.h" |
331 | cascade | 29 | |
736 | cascade | 30 | |
31 | char conv_array[7]; // general array for number -> char conversation |
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32 | |||
1437 | - | 33 | int int_pow(int a, int b) { |
800 | - | 34 | if (b <= 0) return 1; |
35 | int res = 1; |
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36 | while (b-- > 0) res *= a; |
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37 | return res; |
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38 | } |
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39 | |||
331 | cascade | 40 | /* ########################################################################## |
41 | * MAX7456 SPI & Display stuff |
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42 | * ##########################################################################*/ |
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43 | |||
44 | /** |
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45 | * Send a byte through SPI |
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519 | cascade | 46 | * inline because it increases the codesize currenlty 'only' by 110byte but saves |
47 | * the context-change on every char and attribute which is at least done twice |
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48 | * (address and data byte), a significant speed-bost we do not want to miss :) |
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331 | cascade | 49 | */ |
519 | cascade | 50 | inline void spi_send(uint8_t byte) { |
331 | cascade | 51 | for (int8_t i = 7; i >= 0; i--) { |
52 | if (((byte >> i) & 1)) { |
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53 | MAX_SDIN_HIGH |
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54 | } else { |
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55 | MAX_SDIN_LOW |
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56 | } |
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57 | MAX_SCLK_HIGH |
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58 | MAX_SCLK_LOW |
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59 | } |
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60 | } |
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61 | |||
62 | /** |
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63 | * Send <byte> to <address> of MAX7456 |
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64 | */ |
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65 | void spi_send_byte(uint8_t address, uint8_t byte) { |
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66 | // start sending |
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67 | MAX_CS_LOW |
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68 | |||
69 | spi_send(address); |
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70 | spi_send(byte); |
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71 | |||
72 | // end sending |
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73 | MAX_CS_HIGH |
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932 | - | 74 | |
75 | #ifdef SERIALDEBUGDRAW |
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76 | uint8_t c = address + byte; |
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77 | usart0_puts("#3"); |
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78 | usart0_putc(address); |
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79 | usart0_putc(byte); |
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80 | usart0_putc(c); |
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81 | usart0_puts("\n"); |
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82 | #endif |
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331 | cascade | 83 | } |
84 | |||
85 | /** |
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86 | * write a <character> to <address> of MAX7456 display memory |
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87 | */ |
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88 | void write_char(uint16_t address, char character) { |
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1437 | - | 89 | spi_send_byte(MAX7456_DMAH, (address & 0xFF00) >> 8); |
90 | spi_send_byte(MAX7456_DMAL, (address & 0x00FF)); |
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91 | spi_send_byte(MAX7456_DMDI, character); |
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331 | cascade | 92 | } |
93 | |||
94 | /** |
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514 | cascade | 95 | * clear display memory |
96 | * (also sets 8bit mode) |
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97 | */ |
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98 | void clear(void) { |
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99 | /*uint16_t memory_address = 0; |
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100 | for (unsigned int a = 0; a < 480; a++) { |
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101 | write_char(memory_address++, 0); |
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102 | }*/ |
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761 | - | 103 | // clear all display-mem (DMM) |
1437 | - | 104 | spi_send_byte(MAX7456_DMM, 0b01000100); |
514 | cascade | 105 | |
1437 | - | 106 | // clearing takes 20us according to maxim so lets wait longer |
107 | _delay_us(21); |
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514 | cascade | 108 | } |
109 | |||
110 | |||
736 | cascade | 111 | #if (ALLCHARSDEBUG|(WRITECHARS != -1)) |
761 | - | 112 | |
514 | cascade | 113 | /** |
114 | * for testing write all chars to screen |
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115 | */ |
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116 | void write_all_chars() { |
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117 | uint16_t x = 3, y = 2, t = 0; |
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118 | while (t < 256) { |
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761 | - | 119 | write_char(x++ + y * 30, t++); |
514 | cascade | 120 | if (x > 25) { |
121 | y++; |
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122 | x = 3; |
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123 | } |
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124 | } |
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125 | } |
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126 | |||
736 | cascade | 127 | /** |
128 | * let the MAX7456 learn a new character at <number> |
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129 | * with <data>. |
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130 | */ |
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131 | void learn_char(uint8_t number, unsigned char* data) { |
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1437 | - | 132 | // select character to write |
133 | spi_send_byte(MAX7456_CMAH, number); |
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736 | cascade | 134 | |
135 | for (uint8_t i = 0; i < 54; i++) { |
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1437 | - | 136 | // select 4pixel byte of char |
137 | spi_send_byte(MAX7456_CMAL, i); |
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736 | cascade | 138 | |
1437 | - | 139 | // write 4pixel byte of char |
140 | spi_send_byte(MAX7456_CMDI, data[i]); |
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736 | cascade | 141 | } |
142 | |||
1437 | - | 143 | // write to the NVM array from the shadow RAM |
144 | spi_send_byte(MAX7456_CMM, 0b10100000); |
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736 | cascade | 145 | |
146 | // according to maxim writing to nvram takes about 12ms, lets wait longer |
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147 | _delay_ms(120); |
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148 | } |
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149 | #endif |
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150 | |||
514 | cascade | 151 | #if !(ALLCHARSDEBUG|(WRITECHARS != -1)) |
152 | |||
153 | /** |
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331 | cascade | 154 | * write a character <attribute> to <address> of MAX7456 display memory |
155 | */ |
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156 | void write_char_att(uint16_t address, char attribute) { |
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157 | // the only important part is that the DMAH[1] is set |
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158 | // so we add 2 which binary is the 2nd lowest byte |
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1437 | - | 159 | spi_send_byte(MAX7456_DMAH, ((address & 0xFF00) >> 8) | 2); |
160 | spi_send_byte(MAX7456_DMAL, (address & 0x00FF)); |
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161 | spi_send_byte(MAX7456_DMDI, attribute); |
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331 | cascade | 162 | } |
163 | |||
164 | /** |
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165 | * write a <character> at <x>/<y> to MAX7456 display memory |
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166 | */ |
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167 | void write_char_xy(uint8_t x, uint8_t y, char character) { |
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168 | uint16_t address = y * 30 + x; |
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169 | write_char(address, character); |
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170 | } |
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171 | |||
172 | /** |
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173 | * write a character <attribute> at <x>/<y> to MAX7456 display memory |
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174 | */ |
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175 | void write_char_att_xy(uint8_t x, uint8_t y, char attribute) { |
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176 | uint16_t address = y * 30 + x; |
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177 | write_char_att(address, attribute); |
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178 | } |
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179 | |||
180 | /** |
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181 | * write an ascii <character> to <address> of MAX7456 display memory |
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182 | */ |
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183 | void write_ascii_char(uint16_t address, char c) { |
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184 | if (c == 32) c = 0; // remap space |
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185 | else if (c > 48 && c <= 57) c -= 48; // remap numbers |
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186 | else if (c == '0') c = 10; // remap zero |
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187 | else if (c >= 65 && c <= 90) c -= 54; // remap big letters |
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188 | else if (c >= 97 && c <= 122) c -= 60; // remap small letters |
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189 | else if (c == '(') c = 63; // remap |
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190 | else if (c == ')') c = 64; // remap |
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191 | else if (c == '.') c = 65; // remap |
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736 | cascade | 192 | else if (c == '-') c = 73; // remap minus |
331 | cascade | 193 | else if (c == ';') c = 67; // remap |
194 | else if (c == ':') c = 68; // remap |
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195 | else if (c == ',') c = 69; // remap |
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835 | - | 196 | else if (c == '?') c = 66; // remap |
197 | else if (c == '\\') c = 70; // remap |
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198 | else if (c == '_') c = 0xE3; // remap |
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757 | cascade | 199 | else if (c == '/') c = 71; // remap |
835 | - | 200 | else if (c == '"') c = 72; // remap |
201 | else if (c == '<') c = 74; // remap |
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202 | else if (c == '>') c = 75; // remap |
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203 | else if (c == '@') c = 76; // remap |
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331 | cascade | 204 | write_char(address, c); |
205 | } |
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206 | |||
207 | /** |
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208 | * write an ascii <string> at <x>/<y> to MAX7456 display memory |
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209 | */ |
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210 | void write_ascii_string(uint8_t x, uint8_t y, char *string) { |
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211 | while (*string) { |
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212 | write_ascii_char(((x++)+(y * 30)), *string); |
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213 | string++; |
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214 | } |
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215 | } |
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216 | |||
217 | /** |
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783 | - | 218 | * write an ascii <string> with lenght <len> at <x>/<y> to MAX7456 display memory |
219 | */ |
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220 | void write_ascii_string_len(uint8_t x, uint8_t y, char *string, uint8_t len) { |
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221 | while (len--) { |
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222 | write_ascii_char(((x++)+(y * 30)), *string); |
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223 | string++; |
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224 | } |
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225 | } |
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226 | |||
227 | /** |
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346 | cascade | 228 | * write an ascii <string> from progmen at <x>/<y> to MAX7456 display memory |
229 | */ |
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489 | woggle | 230 | void write_ascii_string_pgm(uint8_t x, uint8_t y, const char *string) { |
761 | - | 231 | while (pgm_read_byte(string) != 0x00) |
232 | write_ascii_char(((x++)+(y * 30)), pgm_read_byte(string++)); |
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346 | cascade | 233 | } |
234 | |||
235 | /** |
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379 | cascade | 236 | * write an <string> from progmen at <x>/<y> downwards to MAX7456 display memory |
237 | */ |
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489 | woggle | 238 | void write_string_pgm_down(uint8_t x, uint8_t y, const char *string, uint8_t length) { |
761 | - | 239 | while (length--) |
240 | write_char((x + (y++ * 30)), pgm_read_byte(string++)); |
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379 | cascade | 241 | } |
242 | |||
243 | /** |
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519 | cascade | 244 | * Write a unsigned <number> at <x>/<y> to MAX7456 display memory |
245 | * <length> represents the length to rightbound the number |
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349 | cascade | 246 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
331 | cascade | 247 | */ |
519 | cascade | 248 | void write_ndigit_number_u(uint8_t x, uint8_t y, uint16_t number, int16_t length, uint8_t pad) { |
1437 | - | 249 | if (number >= int_pow(10, length)) { |
250 | number = int_pow(10, length) - 1; |
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800 | - | 251 | } |
761 | - | 252 | itoa(number, conv_array, 10); |
253 | for (uint8_t i = 0; i < length - strlen(conv_array); i++) { |
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254 | if (pad) write_char((x++)+(y * 30), 10); |
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255 | else write_ascii_char((x++)+(y * 30), 0); |
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256 | } |
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257 | write_ascii_string(x, y, conv_array); |
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331 | cascade | 258 | } |
259 | |||
260 | /** |
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519 | cascade | 261 | * Write a signed <number> at <x>/<y> to MAX7456 display memory |
262 | * <length> represents the length to rightbound the number |
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349 | cascade | 263 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
331 | cascade | 264 | */ |
519 | cascade | 265 | void write_ndigit_number_s(uint8_t x, uint8_t y, int16_t number, int16_t length, uint8_t pad) { |
1437 | - | 266 | if (number <= -int_pow(10, length)) { |
267 | number = -int_pow(10, length) + 1; |
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268 | } else if (number >= int_pow(10, length)) { |
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269 | number = int_pow(10, length) - 1; |
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800 | - | 270 | } |
271 | |||
761 | - | 272 | itoa(number, conv_array, 10); |
800 | - | 273 | if (strlen(conv_array) < length) { |
274 | for (uint8_t i = 0; i < length - strlen(conv_array); i++) { |
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275 | if (pad) write_char((x++)+(y * 30), 10); |
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276 | else write_ascii_char((x++)+(y * 30), 0); |
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277 | } |
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761 | - | 278 | } |
279 | write_ascii_string(x, y, conv_array); |
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331 | cascade | 280 | } |
281 | |||
282 | /** |
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519 | cascade | 283 | * Write a unsigned <number> at <x>/<y> to MAX7456 display memory as /10th of value |
284 | * <length> represents the length to rightbound the number |
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349 | cascade | 285 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
331 | cascade | 286 | */ |
519 | cascade | 287 | void write_ndigit_number_u_10th(uint8_t x, uint8_t y, uint16_t number, int16_t length, uint8_t pad) { |
1437 | - | 288 | if (number >= int_pow(10, length)) { |
289 | number = int_pow(10, length) - 1; |
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800 | - | 290 | } |
761 | - | 291 | itoa(number, conv_array, 10); |
292 | uint8_t len = strlen(conv_array); |
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293 | for (uint8_t i = 0; i < length - len; i++) { |
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294 | if (pad) write_char((x++)+(y * 30), 10); // zero |
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295 | else write_char((x++)+(y * 30), 0); // blank |
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296 | } |
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297 | char rest = conv_array[len - 1]; |
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298 | conv_array[len - 1] = 0; |
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299 | if (len == 1) { |
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300 | write_char((x - 1)+(y * 30), 10); // zero |
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301 | } else if (len == 2 && conv_array[0] == '-') { |
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302 | write_char((x - 1)+(y * 30), 0x49); // minus |
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303 | write_char((x)+(y * 30), 10); // zero |
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304 | } else { |
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305 | write_ascii_string(x, y, conv_array); |
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306 | } |
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307 | x += len - 1; |
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308 | write_char((x++)+(y * 30), 65); // decimal point |
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309 | write_ascii_char((x++)+(y * 30), rest); // after dot |
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331 | cascade | 310 | } |
311 | |||
312 | /** |
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519 | cascade | 313 | * Write a signed <number> at <x>/<y> to MAX7456 display memory as /10th of value |
314 | * <length> represents the length to rightbound the number |
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349 | cascade | 315 | * <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7 |
331 | cascade | 316 | */ |
519 | cascade | 317 | void write_ndigit_number_s_10th(uint8_t x, uint8_t y, int16_t number, int16_t length, uint8_t pad) { |
1437 | - | 318 | if (number >= int_pow(10, length)) { |
319 | number = int_pow(10, length) - 1; |
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800 | - | 320 | } |
761 | - | 321 | itoa(number, conv_array, 10); |
322 | uint8_t len = strlen(conv_array); |
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323 | for (uint8_t i = 0; i < length - len; i++) { |
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324 | if (pad) write_char((x++)+(y * 30), 10); // zero |
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325 | else write_char((x++)+(y * 30), 0); // blank |
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326 | } |
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327 | char rest = conv_array[len - 1]; |
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328 | conv_array[len - 1] = 0; |
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329 | if (len == 1) { |
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330 | write_char((x - 1)+(y * 30), 10); // zero |
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331 | } else if (len == 2 && conv_array[0] == '-') { |
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332 | write_char((x - 1)+(y * 30), 0x49); // minus |
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333 | write_char((x)+(y * 30), 10); // zero |
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334 | } else { |
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335 | write_ascii_string(x, y, conv_array); |
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336 | } |
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337 | x += len - 1; |
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338 | write_char((x++)+(y * 30), 65); // decimal point |
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339 | write_ascii_char((x++)+(y * 30), rest); // after dot |
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331 | cascade | 340 | } |
341 | |||
342 | /** |
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343 | * write <seconds> as human readable time at <x>/<y> to MAX7456 display mem |
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344 | */ |
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345 | void write_time(uint8_t x, uint8_t y, uint16_t seconds) { |
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346 | uint16_t min = seconds / 60; |
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347 | seconds -= min * 60; |
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519 | cascade | 348 | write_ndigit_number_u(x, y, min, 3, 0); |
331 | cascade | 349 | write_char_xy(x + 3, y, 68); |
519 | cascade | 350 | write_ndigit_number_u(x + 4, y, seconds, 2, 1); |
331 | cascade | 351 | } |
352 | |||
353 | /** |
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412 | cascade | 354 | * wirte a <position> at <x>/<y> assuming it is a gps position for long-/latitude |
355 | */ |
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356 | void write_gps_pos(uint8_t x, uint8_t y, int32_t position) { |
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761 | - | 357 | if (position < 0) { |
358 | position ^= ~0; |
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359 | position++; |
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360 | write_char_xy(x++, y, 0x49); // minus |
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361 | } else { |
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362 | write_char_xy(x++, y, 0); // clear ('+' would be nice, maybe later) |
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363 | } |
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364 | write_ndigit_number_u(x, y, (uint16_t)(position / (int32_t)10000000), 3, 1); |
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365 | write_char_xy(x + 3, y, 65); // decimal point |
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366 | position = position - ((position / (int32_t)10000000) * (int32_t)10000000); |
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367 | write_ndigit_number_u(x + 4, y, (uint16_t)(position / (int32_t)1000), 4, 1); |
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368 | position = position - ((uint16_t)(position / (int32_t)1000) * (int32_t)1000); |
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369 | write_ndigit_number_u(x + 8, y, (uint16_t)position, 3, 1); |
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370 | write_char_xy(x + 11, y, 0xD0); // degree symbol |
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412 | cascade | 371 | } |
514 | cascade | 372 | |
373 | #endif |