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annotate sprink.c @ 7:78983502a4e9

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Use base 16 for IO port values
author Daniel O'Connor <darius@dons.net.au>
date Sun, 15 Feb 2015 17:47:25 +1030
parents 951277329ee6
children
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1 /*
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2 * Sprinkler relay control
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3 *
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4 * Copyright (c) 2015
0
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5 * Daniel O'Connor <darius@dons.net.au>. All rights reserved.
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6 *
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7 * Redistribution and use in source and binary forms, with or without
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8 * modification, are permitted provided that the following conditions
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9 * are met:
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10 * 1. Redistributions of source code must retain the above copyright
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11 * notice, this list of conditions and the following disclaimer.
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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26 * SUCH DAMAGE.
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27 */
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28
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29 #include <avr/io.h>
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30 #include <avr/interrupt.h>
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31 #include <avr/pgmspace.h>
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32 #include <stdio.h>
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33 #include <string.h>
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34 #include <ctype.h>
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35 #include <stdlib.h>
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36 #include <util/delay.h>
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37 #include <avr/wdt.h>
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38
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39 #include "1wire.h"
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40 #include "bitstring.h"
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41 #include "cons.h"
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42 #include "ds1307.h"
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43 #include "splitargv.h"
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44 #include "water.h"
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45
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46 #define MAXARGS 10
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47
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48 /*
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49 ** Fuse bits should be set as follows
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50 **
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51 ** EFUSE - BOD 4.3V -> xxxxx100 -> 0xfc
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52 ** HFUSE - SPIEN, EESAVE
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53 ** BOOTSZ1/0 -> 11010001 -> 0xd1
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54 ** LFUSE - SUT1, CKSEL1 (low XTAL) -> 11011101 -> 0xdd
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55 **
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56 ** http://www.engbedded.com/fusecalc/
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57 **
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58 ** From Ateml the fuses were..
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59 ** EFUSE - 0xff - 11111111 - BOD disabled
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60 ** HFUSE - 0x99 - 10011001 - OCD disabled, JTAG enabled, SPI enabled, WDT disabled,
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61 ** - EESAVE off, BOOTSZ0/1, BOOTRST off
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62 ** LFUSE - 0x62 - 01100010 - CLKDIV8, no CKOUT, long SUT, CKSEL3/2/0 (internal 8Mhz)
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63 */
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64
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65 /*
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66 * Mirror of the MCUCSR register, taken early during startup.
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67 */
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68 uint8_t mcucsr __attribute__((section(".noinit")));
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69
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70 void process_cmd(void);
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71
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72 /*
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73 * Read out and reset MCUCSR early during startup.
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74 */
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75 void handle_mcucsr(void)
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76 __attribute__((section(".init3")))
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77 __attribute__((naked));
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78 void handle_mcucsr(void) {
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79 wdt_disable();
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80 #ifdef MCUSR
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81 mcucsr = MCUSR;
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82 MCUSR = 0;
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83 #else
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84 mcucsr = MCUCSR;
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85 MCUCSR = 0;
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86 #endif
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87 }
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88
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89 consbuf_t cmd;
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90
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91 int
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92 main(void) {
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93 /* Disable interrupts while we frob stuff */
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94 cli();
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95
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96 /* Disable watchdog in case it was previously on */
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97 wdt_disable();
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98
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99 /* Init UART */
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100 cons_init();
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101
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102 printf_P(PSTR("\r\n\r\n===============\r\n"));
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103
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104 /* Init TWI etc */
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105 ds1307_init();
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106
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107 /* Set up the one wire stuff */
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108 OWInit();
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109
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110 /* Analogue input is PA0:7 */
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111 DDRA = 0x00;
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112 PORTA = 0x00;
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113 DIDR0 = 0xff; /* Disable digital input buffers */
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114 #ifdef PRR
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115 PRR &= ~_BV(PRADC); /* Power ADC on - note that the
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116 * datasheet says this is already 0 at
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117 * power on.. */
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118 #endif
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119
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120 /* PB0 Used for 1-wire bus
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121 * PB4:7 Used for relay board */
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122 DDRB = 0xf0;
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123 PORTB = 0x00;
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124
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125 /* TWI (0:1) */
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126 DDRC = 0x03;
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127 PORTC = 0x03;
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128
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129 /* USART (0:1) */
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130 DDRD = 0x03;
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131 PORTD = 0x03;
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132
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133 fputs_P(PSTR("Reset cause: "), stdout);
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134 if ((mcucsr & _BV(PORF)) == _BV(PORF))
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135 printf_P(PSTR("Power on\r\n"));
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136
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137 if ((mcucsr & _BV(EXTRF)) == _BV(EXTRF))
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138 printf_P(PSTR("External\r\n"));
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139
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140 if ((mcucsr & _BV(BORF)) == _BV(BORF))
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141 printf_P(PSTR("Brown-out\r\n"));
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142
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143 if ((mcucsr & _BV(WDRF)) == _BV(WDRF))
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144 printf_P(PSTR("Watchdog\r\n"));
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145
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146 #ifdef JTRF
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147 if ((mcucsr & _BV(JTRF)) == _BV(JTRF))
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148 printf_P(PSTR("JTAG\r\n"));
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149 #endif
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150
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151 /* Ready to go! */
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152 sei();
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153
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154 /* Init water control state machine */
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155 water_init();
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156
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157 /*
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158 * Enable the watchdog with the largest prescaler. Will cause a
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159 * watchdog reset after approximately 2 s @ Vcc = 5 V
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160 */
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161 wdt_enable(WDTO_2S);
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162
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163 printf_P(PSTR("> "));
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164 cmd.state = 0;
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165
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166 /* Wait for user input or an "interrupt" */
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167 while (1) {
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168 wdt_reset();
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169
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170 water_update();
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171
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172 if (cmd.state == 255) {
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173 process_cmd();
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174 printf_P(PSTR("> "));
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175 /* Allow new characters to be processed */
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176 cmd.state = 0;
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177 }
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178 }
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179 }
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180
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181 void
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182 process_cmd(void) {
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183 int argc;
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184 char *argv[MAXARGS];
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185
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186 /* User just pressed enter */
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187 if (cmd.len == 0)
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188 return;
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189
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190 /* Split buffer into argv/argc (and de-volatilise) */
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191 splitargv((char *)cmd.buf, 0, argv, MAXARGS, &argc);
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192
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193 if (argc == 0)
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194 return;
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195
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196 if (!strcasecmp_P(argv[0], PSTR("?")) ||
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197 !strcasecmp_P(argv[0], PSTR("help"))) {
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198 puts_P(PSTR("help This help\r\n"
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199 "wa all dly time Water all regions for time minutes after dly minutes\r\n"
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200 "gc Get time of day\r\n"
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201 "sc time Set time of day (time is YYYY/MM/DD HH:MM:SS)\r\n"
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202 "in port Read from a port\r\n"
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203 "ou port val Write to a port (val in hex)\r\n"
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204 "dd port val Set DDR on port\r\n"
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205 "an pin Sample from pin\r\n"
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206 "sr Search for 1-wire devices\r\n"
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207 "te ID Sample temperature from ID\r\n"
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208 "re Reset 1-wire bus\r\n"
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209 "rb Read bit from 1-wire bus\r\n"
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210 "rc Read byte from 1-wire bus\r\n"
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211 "wb bit Write bit to 1-wire bus\r\n"
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212 "wc byte Write byte to 1-wire bus\r\n"
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213 "zz Reset micro\r\n"));
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214 return;
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215 } else if (!strcasecmp_P(argv[0], PSTR("wa"))) {
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216 water_cmd(argc - 1, argv + 1);
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217 } else if (!strcasecmp_P(argv[0], PSTR("an"))) {
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218 uint16_t res;
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219 int pin;
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220 char *eptr;
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221
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222 if (argc != 2) {
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223 printf_P(PSTR("Bad usage\r\n"));
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224 return;
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225 }
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226
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227 pin = strtol(argv[1], &eptr, 0);
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228 if (eptr == argv[1]) {
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229 printf_P(PSTR("Unable to parse\r\n"));
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230 return;
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231 }
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232 if (pin < 0 || pin > 7) {
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233 printf_P(PSTR("Unknown pin\r\n"));
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234 return;
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235 }
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236
1
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237 /* Select desired pin, use AVREF */
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238 ADMUX = _BV(pin);
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239
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240 /* Enable ADC, start conversion, set divisor to 64
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241 * (8e6 / 64 => 125kHz (max is 200kHz)
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242 */
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243 ADCSRA = _BV(ADEN) | _BV(ADSC) | _BV(ADPS2) | _BV(ADPS1);
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244
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245 /* Spin waiting for result */
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246 while ((ADCSRA & _BV(ADIF)) == 0)
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247 ;
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248 res = ADCL | (ADCH << 8);
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249 printf_P(PSTR("Pin %d <= %hhd\r\n"), pin, res);
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250
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251 /* Disable ADC */
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252 ADCSRA = 0;
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253 } else if (!strcasecmp_P(argv[0], PSTR("ou"))) {
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254 int val;
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255 char *eptr;
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256
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257 if (argc != 3) {
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258 printf_P(PSTR("Bad usage\r\n"));
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259 return;
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260 }
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261
7
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262 val = strtol(argv[2], &eptr, 16);
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263 if (eptr == argv[2]) {
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264 printf_P(PSTR("Unable to parse val\r\n"));
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265 return;
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266 }
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267
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268 switch (argv[1][0]) {
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269 case 'a':
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270 PORTA = val & 0xff;
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271 break;
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272
0
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273 case 'b':
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274 PORTB = val & 0xff;
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275 break;
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276
0
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277 case 'c':
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278 PORTC = val & 0xff;
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279 break;
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280
0
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281 case 'd':
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282 PORTD = val & 0xff;
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283 break;
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284
0
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285 default:
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286 printf_P(PSTR("Unknown port\r\n"));
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287 return;
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288 }
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289 printf_P(PSTR("PORT%c <= 0x%02x\r\n"), toupper(argv[1][0]), val);
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290 } else if (!strcasecmp_P(argv[0], PSTR("dd"))) {
0
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291 uint8_t val;
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292 char *eptr;
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293
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294 if (argc != 2 && argc != 3) {
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295 printf_P(PSTR("Bad usage\r\n"));
0
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296 return;
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297 }
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298
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299 if (argc == 1) {
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300 switch (argv[1][0]) {
0
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301 case 'a':
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302 DDRA = val;
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303 break;
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304
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305 case 'b':
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306 DDRB = val;
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307 break;
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308
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309 case 'c':
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310 DDRC = val;
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311 break;
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312
0
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313 case 'd':
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314 DDRD = val;
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315 break;
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316
0
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317 default:
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318 printf_P(PSTR("Unknown port\r\n"));
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319 return;
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320 }
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321 printf_P(PSTR("DDR%c => 0x%02x\r\n"), toupper(argv[1][0]), val);
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322 } else {
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323 val = strtol(argv[2], &eptr, 16);
5
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324 if (eptr == argv[2]) {
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325 printf_P(PSTR("Unable to parse val\r\n"));
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326 return;
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327 }
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328
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329 switch (argv[1][0]) {
0
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330 case 'a':
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331 DDRA = val & 0xff;
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332 break;
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333
0
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334 case 'b':
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335 DDRB = val & 0xff;
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336 break;
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337
0
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338 case 'c':
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339 DDRC = val & 0xff;
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340 break;
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341
0
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342 case 'd':
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343 DDRD = val & 0xff;
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344 break;
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345
0
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346 default:
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347 printf_P(PSTR("Unknown port\r\n"));
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348 return;
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349 }
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350 printf_P(PSTR("DDR%c <= 0x%02x\r\n"), toupper(argv[1][0]), val);
0
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351 }
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352 } else if (!strcasecmp_P(argv[0], PSTR("zz"))) {
0
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353 cli();
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354 wdt_enable(WDTO_15MS);
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355 for (;;)
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356 ;
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357 } else if (!strcasecmp_P(argv[0], PSTR("sr"))) {
0
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358 uint8_t ROM[8];
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359 int8_t i;
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360
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361 i = OWFirst(ROM, 1, 0);
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362 do {
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363 switch (i) {
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364 case OW_NOMODULES:
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365 return;
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366
0
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367 case OW_FOUND:
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368 for (i = 0; i < 8; i++)
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369 printf_P(PSTR("%02x%S"), ROM[i], i == 7 ? PSTR("\r\n") : PSTR(":"));
0
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370 break;
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371
0
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parents:
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372 case OW_BADWIRE:
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parents:
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373 case OW_NOPRESENCE:
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374 case OW_BADCRC:
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375 default:
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376 printf_P(PSTR("Err %d\r\n"), i);
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diff changeset
377 return;
0
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parents:
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378 }
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379 i = OWNext(ROM, 1, 0);
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380 } while (1);
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381 } else if (!strcasecmp_P(argv[0], PSTR("te"))) {
0
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parents:
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382 uint8_t ROM[8];
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parents:
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383 int16_t t;
5
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parents: 4
diff changeset
384
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Daniel O'Connor <darius@dons.net.au>
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diff changeset
385 if (sscanf_P(argv[1], PSTR("%hhx:%hhx:%hhx:%hhx:%hhx:%hhx:%hhx:%hhx"),
0
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parents:
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386 &ROM[0], &ROM[1], &ROM[2], &ROM[3],
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parents:
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387 &ROM[4], &ROM[5], &ROM[6], &ROM[7]) != 8) {
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parents:
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388 printf_P(PSTR("Unable to parse ROM ID\r\n"));
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parents:
diff changeset
389 return;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
390 }
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parents:
diff changeset
391
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parents:
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392 t = OWGetTemp(ROM);
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parents:
diff changeset
393 switch (t) {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
394 case OW_TEMP_WRONG_FAM:
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parents:
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395 printf_P(PSTR("ROM specified isn't a temperature sensor\r\n"));
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
396 break;
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parents:
diff changeset
397
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
398 case OW_TEMP_CRC_ERR:
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parents:
diff changeset
399 printf_P(PSTR("CRC mismatch\r\n"));
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
400 break;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
401
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
402 case OW_TEMP_NO_ROM:
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
403 printf_P(PSTR("No ROM found\r\n"));
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
404 break;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
405
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
406 default:
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
407 printf_P(PSTR("%d.%02d\r\n"), GETWHOLE(t), GETFRAC(t));
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
408 break;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
409 }
5
951277329ee6 Use splitargv instead of rolling our own.
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410 } else if (!strcasecmp_P(argv[0], PSTR("re"))) {
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411 printf_P(PSTR("Reset = %d\r\n"), OWTouchReset());
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412 } else if (!strcasecmp_P(argv[0], PSTR("rb"))) {
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413 printf_P(PSTR("Read %d\r\n"), OWReadBit());
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414 } else if (!strcasecmp_P(argv[0], PSTR("rc"))) {
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415 printf_P(PSTR("Read 0x%02x\r\n"), OWReadByte());
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416 } else if (!strcasecmp_P(argv[0], PSTR("wb"))) {
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417 uint8_t d;
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418
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419 if (sscanf_P((char *)cmd.buf, PSTR("wb %hhu"), &d) != 1) {
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420 printf_P(PSTR("Can't parse bit\r\n"));
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421 return;
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422 }
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423 OWWriteBit(d);
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424 printf_P(PSTR("Wrote %d\r\n"), d);
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425 } else if (!strcasecmp_P(argv[0], PSTR("wc"))) {
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426 uint8_t d;
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427 char *eptr;
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428
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429 d = strtol(argv[1], &eptr, 16);
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430 if (eptr == argv[1]) {
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431 printf_P(PSTR("Unable to parse byte\r\n"));
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432 return;
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433 }
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434
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435 OWWriteByte(d);
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436 printf_P(PSTR("Wrote 0x%02x\r\n"), d);
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437 } else {
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438 printf_P(PSTR("Unknown command, help for a list\r\n"));
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439 }
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440 }