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| Rev | Author | Line No. | Line |
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| 331 | cascade | 1 | /**************************************************************************** |
| 1437 | - | 2 | * Copyright (C) 2009-2012 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 |