1 // Copyright (c) 2017, Tobias Mueller tm(at)tm3d.de
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2 // All rights reserved.
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4 // Redistribution and use in source and binary forms, with or without
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5 // modification, are permitted provided that the following conditions are
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8 // * Redistributions of source code must retain the above copyright
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9 // notice, this list of conditions and the following disclaimer.
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10 // * Redistributions in binary form must reproduce the above copyright
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11 // notice, this list of conditions and the following disclaimer in the
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12 // documentation and/or other materials provided with the
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14 // * All advertising materials mentioning features or use of this
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15 // software must display the following acknowledgement: This product
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16 // includes software developed by tm3d.de and its contributors.
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17 // * Neither the name of tm3d.de nor the names of its contributors may
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18 // be used to endorse or promote products derived from this software
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19 // without specific prior written permission.
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21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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22 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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23 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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24 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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25 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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26 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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27 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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28 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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29 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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30 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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31 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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34 #define F_CPU 8000000UL
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36 #include <avr/interrupt.h>
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37 #include <util/delay.h>
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38 #include <avr/wdt.h>
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39 #include <avr/sleep.h>
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40 #include <avr/pgmspace.h>
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43 extern void OWINIT();
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44 extern void EXTERN_SLEEP();
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46 uint8_t owid[8]={0x26, 0xA2, 0xD9, 0x84, 0xDD, 0xDD, 0x05, 0xCE};/**/
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47 uint8_t config_info[26]={0x01,0x06, 0x05,0x08, 0x04,0x07, 0x00,0x00, 0x02,0x09,0x00,0x09,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
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51 extern uint8_t mode;
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52 extern uint8_t gcontrol;
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53 extern uint8_t reset_indicator;
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54 extern uint8_t alarmflag;
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56 volatile uint8_t wdcounter;
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61 volatile uint8_t bytes[64];
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65 uint16_t voltage; //4
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66 uint16_t current; //6
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67 uint8_t threshold; //8
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69 uint8_t page1[8]; //9
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70 uint8_t page2[8]; //17
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71 uint8_t page3[8]; //25
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72 uint8_t page4[8]; //33
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73 uint8_t page5[8]; //41
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74 uint8_t page6[8]; //49
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75 uint8_t page7[8]; //57
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79 volatile pack_t pack;
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82 #define DDR_SENSOR DDRA
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83 #define PORT_SENSOR PORTA
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84 #define PIN_SENSOR PINA
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85 #define SENSOR PINA2
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87 #define SENSOR_sda_out DDR_SENSOR |= (1 << SENSOR)
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88 #define SENSOR_sda_in DDR_SENSOR &= ~(1 << SENSOR);PORT_SENSOR |= (1 << SENSOR) // release sda => hi in consequence of pullup
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89 #define SENSOR_sda_low PORT_SENSOR &= ~(1 << SENSOR)
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90 #define SENSOR_sda_hi PORT_SENSOR |= (1 << SENSOR)
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91 #define SENSOR_is_hi PIN_SENSOR & (1 << SENSOR)
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92 #define SENSOR_is_low !(PIN_SENSOR & (1 << SENSOR))
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94 volatile int16_t am2302_temp;
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95 volatile uint16_t am2302_hum;
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98 uint8_t am_wait(uint8_t _time,uint8_t _signal){
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102 while((SENSOR_is_hi)&&(TCNT1<_time)) {}
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104 while((SENSOR_is_low)&&(TCNT1<_time)) {}
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106 if (TCNT1>=_time) {return 1;}
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110 volatile uint8_t am2302_mode=0;
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111 volatile uint8_t timeout=0;
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118 uint8_t userRegister[1];
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120 volatile double temperatureC,humidityRH;
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123 #if defined(__AVR_ATtiny24__)||defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny24A__)||defined(__AVR_ATtiny44A__) || defined(__AVR_ATtiny84A__)
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124 ISR(WATCHDOG_vect) {
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129 if (reset_indicator==1) reset_indicator++;
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130 else if (reset_indicator==2) mode=0;
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135 DDRB&=~(1<<PORTB0); //Eingang
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136 __asm__ __volatile__ ("nop");
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137 PORTB|=(1<<PORTB0); //Pullup
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138 __asm__ __volatile__ ("nop");
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139 __asm__ __volatile__ ("nop");
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140 __asm__ __volatile__ ("nop");
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141 __asm__ __volatile__ ("nop");
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142 __asm__ __volatile__ ("nop");
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143 r=PINB&(1<<PORTB0);
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144 __asm__ __volatile__ ("nop");
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145 PORTB&=~(1<<PORTB0);
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146 __asm__ __volatile__ ("nop");
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147 DDRB|=(1<<PORTB0); //Eingang
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152 int16_t lam2302_temp;
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153 uint16_t lam2302_hum;
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155 uint8_t sensor_data[5];
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157 TCCR1B=(1<<CS11); //Clock/8 1µs
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170 /*uint16_t loopCnt;
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172 while((SENSOR_is_low)) {
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173 if (loopCnt-- == 0) return 11;
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176 while((SENSOR_is_hi)) {
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177 if (loopCnt-- == 0) return 12;
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179 if (am_wait(200,1)) return 2;
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180 if (am_wait(100,0)) return 3;
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181 if (am_wait(100,1)) return 4;
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183 for(uint8_t i = 0; i < 5; i++) {
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184 uint8_t sensor_byte = 0;
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185 for(uint8_t j = 1; j <= 8; j++) {// get 8 bits from sensor
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186 if (am_wait(88,0)) return 5;
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188 TCNT1=0;while(TCNT1==0);;while(TCNT1<35) ;
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189 sensor_byte <<= 1; // add new lower byte
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190 if (SENSOR_is_hi) {// if sda high after 30us => bit=1 else bit=0
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192 if (am_wait(45,1)) return 6;// 30us - 75us = 45us
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195 sensor_data[i] = sensor_byte;
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199 if ( ((sensor_data[0]+sensor_data[1]+sensor_data[2]+sensor_data[3]) & 0xff ) != sensor_data[4])
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201 PORTB&=~(1<<PINB0);
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204 if (sensor_data[2]&0x80) { //minus
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205 sensor_data[2]&=~(0x80);
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206 lam2302_temp=-( sensor_data[2]*10);
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208 lam2302_temp=(sensor_data[2]*10);
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210 double htemp=lam2302_temp;
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211 double hhum=(1.0546-0.000216*htemp)*(sensor_data[0]*10);
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212 //htemp=Temperauter * 10
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213 //lam2302_hum=0.318*hhum +76;
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214 lam2302_hum=0.31*hhum +80; //hhum = Hum*10 -> 5V also all *5
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219 lam2302_hum=(sensor_data[0]*10);
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222 lam2302_temp=lam2302_temp*25.6;
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225 am2302_hum=lam2302_hum;
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226 am2302_temp=lam2302_temp;
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239 PRR|=(1<<PRUSI)|(1<<PRADC); // adc and usi for save Power
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241 PORTB=0xFF-(1<<PORTB0); //Schalter kann gegen Masse sein und zieht dann immer Strom
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242 DDRB|=(1<<PORTB0); //Als Ausgang und 0
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247 ACSR|=(1<<ACD); //Disable Comparator
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248 ADCSRB|=(1<<ACME); //Disable Analog multiplexer
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249 MCUCR &=~(1<<PUD); //All Pins Pullup...
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253 DDRA|=(1<<PINA1); //stromversorgung
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254 #define SENSON PORTA|=(1<<PINA1);
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255 #define SENSOFF PORTA&=~(1<<PINA1);
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257 // Set up Watch Dog Timer for Inactivity
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258 WDTCSR |= (1<<WDCE) ; // Enable the WD Change Bit
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259 WDTCSR = (1<<WDIE) | // Enable WDT Interrupt
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260 (1<<WDP2) | (1<<WDP1); // Set Timeout to ~2 seconds
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263 config_info[5]=12; //hum *10
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265 config_info[5]=7; //HIH4031
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269 for(i=0;i<64;i++) pack.bytes[i]=0;
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270 pack.page3[0]=0xF1; //Wiregate Code
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278 am2302_temp=err*256;
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289 if (wdcounter==2) {
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292 pack.page3[pn]=err;
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293 pn=pn+1;if (pn>31) pn=1;
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298 if (wdcounter>=16) {
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305 if (((TIMSK0 & (1<<TOIE0))==0)&& (mode==0)) {
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306 MCUCR|=(1<<SE)|(1<<SM1);
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307 MCUCR&=~(1<<ISC01);
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