Send DHT11 & SHT10 sensors data through LoRa SX1272 board.
Dependencies: DHT11 SHTx SX1272Lib mbed
Fork of SX1272-Transmitter by
main.cpp@23:711e46d8c9c6, 2017-04-03 (annotated)
- Committer:
- Antoine38
- Date:
- Mon Apr 03 15:10:40 2017 +0000
- Revision:
- 23:711e46d8c9c6
- Parent:
- 22:e6a5e6cf38cb
Fix some variables
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
GregCr | 0:1ed39951ab7b | 1 | #include "mbed.h" |
GregCr | 4:5ece30264cd9 | 2 | #include "main.h" |
Antoine38 | 18:1ee53f77b90d | 3 | // SX1272 Lib |
GregCr | 13:edb9b443c1dd | 4 | #include "sx1272-hal.h" |
GregCr | 8:f956dee63a56 | 5 | #include "debug.h" |
Antoine38 | 18:1ee53f77b90d | 6 | // DHT11 Lib (air temperature and humidity) |
Antoine38 | 18:1ee53f77b90d | 7 | #include "DHT11.h" |
Antoine38 | 19:e50e4a513de1 | 8 | // SHT10 (soil temperature and humidity) |
Antoine38 | 19:e50e4a513de1 | 9 | #include "SHTx/sht15.hpp" |
GregCr | 0:1ed39951ab7b | 10 | |
GregCr | 0:1ed39951ab7b | 11 | /* Set this flag to '1' to display debug messages on the console */ |
GregCr | 13:edb9b443c1dd | 12 | #define DEBUG_MESSAGE 1 |
GregCr | 0:1ed39951ab7b | 13 | |
Antoine38 | 19:e50e4a513de1 | 14 | /* DELAY between two transmission (in seconds) */ |
Antoine38 | 21:3ea7ab726dd4 | 15 | #define TRANSMISSION_DELAY 1800 |
GregCr | 0:1ed39951ab7b | 16 | |
Antoine38 | 14:62c3fd006150 | 17 | #define RF_FREQUENCY 868000000 // Hz |
Antoine38 | 14:62c3fd006150 | 18 | #define TX_OUTPUT_POWER 14 // 14 dBm |
GregCr | 0:1ed39951ab7b | 19 | |
Antoine38 | 14:62c3fd006150 | 20 | #define LORA_BANDWIDTH 2 // [0: 125 kHz, |
Antoine38 | 15:24dc42e5d7bf | 21 | // 1: 250 kHz, |
Antoine38 | 15:24dc42e5d7bf | 22 | // 2: 500 kHz, |
Antoine38 | 15:24dc42e5d7bf | 23 | // 3: Reserved] |
Antoine38 | 15:24dc42e5d7bf | 24 | |
Antoine38 | 14:62c3fd006150 | 25 | #define LORA_SPREADING_FACTOR 7 // [SF7..SF12] |
Antoine38 | 14:62c3fd006150 | 26 | #define LORA_CODINGRATE 1 // [1: 4/5, |
Antoine38 | 15:24dc42e5d7bf | 27 | // 2: 4/6, |
Antoine38 | 15:24dc42e5d7bf | 28 | // 3: 4/7, |
Antoine38 | 15:24dc42e5d7bf | 29 | // 4: 4/8] |
Antoine38 | 15:24dc42e5d7bf | 30 | |
Antoine38 | 14:62c3fd006150 | 31 | #define LORA_PREAMBLE_LENGTH 8 |
Antoine38 | 14:62c3fd006150 | 32 | #define LORA_SYMBOL_TIMEOUT 5 // Symbols |
Antoine38 | 14:62c3fd006150 | 33 | #define LORA_FIX_LENGTH_PAYLOAD_ON false |
Antoine38 | 14:62c3fd006150 | 34 | #define LORA_FHSS_ENABLED false |
Antoine38 | 14:62c3fd006150 | 35 | #define LORA_NB_SYMB_HOP 4 |
Antoine38 | 14:62c3fd006150 | 36 | #define LORA_IQ_INVERSION_ON false |
Antoine38 | 14:62c3fd006150 | 37 | #define LORA_CRC_ENABLED true |
GregCr | 0:1ed39951ab7b | 38 | |
Antoine38 | 21:3ea7ab726dd4 | 39 | #define BUFFER_SIZE 6 // Define the payload size here |
GregCr | 0:1ed39951ab7b | 40 | |
GregCr | 3:8b9e2a4df4b5 | 41 | DigitalOut led(LED1); |
GregCr | 3:8b9e2a4df4b5 | 42 | |
mluis | 10:7af820d1e1df | 43 | /*! |
mluis | 10:7af820d1e1df | 44 | * Radio events function pointer |
mluis | 10:7af820d1e1df | 45 | */ |
mluis | 10:7af820d1e1df | 46 | static RadioEvents_t RadioEvents; |
mluis | 10:7af820d1e1df | 47 | |
mluis | 10:7af820d1e1df | 48 | /* |
mluis | 10:7af820d1e1df | 49 | * Global variables declarations |
mluis | 10:7af820d1e1df | 50 | */ |
GregCr | 13:edb9b443c1dd | 51 | SX1272MB2xAS Radio( NULL ); |
GregCr | 0:1ed39951ab7b | 52 | |
Antoine38 | 18:1ee53f77b90d | 53 | uint8_t msg[BUFFER_SIZE]; |
GregCr | 0:1ed39951ab7b | 54 | |
GregCr | 0:1ed39951ab7b | 55 | uint16_t BufferSize = BUFFER_SIZE; |
GregCr | 0:1ed39951ab7b | 56 | uint8_t Buffer[BUFFER_SIZE]; |
GregCr | 0:1ed39951ab7b | 57 | |
Antoine38 | 18:1ee53f77b90d | 58 | // Air temperature and humidity sensor |
Antoine38 | 19:e50e4a513de1 | 59 | DHT11 airSensor(D6); |
Antoine38 | 18:1ee53f77b90d | 60 | int DHT11_state; |
Antoine38 | 18:1ee53f77b90d | 61 | |
Antoine38 | 19:e50e4a513de1 | 62 | // Soil temperature and humidity sensor |
Antoine38 | 21:3ea7ab726dd4 | 63 | SHTx::SHT15 soilSensor(D9, D8); |
Antoine38 | 19:e50e4a513de1 | 64 | |
Antoine38 | 14:62c3fd006150 | 65 | int main() |
GregCr | 0:1ed39951ab7b | 66 | { |
Antoine38 | 14:62c3fd006150 | 67 | debug( "\n\n\r iGreenhouse Application - Transmitter \n\n\r" ); |
mluis | 10:7af820d1e1df | 68 | |
mluis | 10:7af820d1e1df | 69 | // Initialize Radio driver |
mluis | 10:7af820d1e1df | 70 | RadioEvents.TxDone = OnTxDone; |
mluis | 10:7af820d1e1df | 71 | RadioEvents.TxTimeout = OnTxTimeout; |
mluis | 10:7af820d1e1df | 72 | Radio.Init( &RadioEvents ); |
Antoine38 | 14:62c3fd006150 | 73 | |
GregCr | 7:c1bbd6c56979 | 74 | // verify the connection with the board |
Antoine38 | 14:62c3fd006150 | 75 | while( Radio.Read( REG_VERSION ) == 0x00 ) { |
GregCr | 7:c1bbd6c56979 | 76 | debug( "Radio could not be detected!\n\r", NULL ); |
GregCr | 7:c1bbd6c56979 | 77 | wait( 1 ); |
GregCr | 2:59e108728d71 | 78 | } |
Antoine38 | 14:62c3fd006150 | 79 | |
GregCr | 13:edb9b443c1dd | 80 | debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1272MB2XAS ) ) , "\n\r > Board Type: SX1272MB2xAS < \n\r" ); |
GregCr | 0:1ed39951ab7b | 81 | |
Antoine38 | 14:62c3fd006150 | 82 | Radio.SetChannel( RF_FREQUENCY ); |
Antoine38 | 14:62c3fd006150 | 83 | |
Antoine38 | 14:62c3fd006150 | 84 | |
GregCr | 7:c1bbd6c56979 | 85 | debug_if( LORA_FHSS_ENABLED, "\n\n\r > LORA FHSS Mode < \n\n\r"); |
GregCr | 7:c1bbd6c56979 | 86 | debug_if( !LORA_FHSS_ENABLED, "\n\n\r > LORA Mode < \n\n\r"); |
GregCr | 7:c1bbd6c56979 | 87 | |
GregCr | 0:1ed39951ab7b | 88 | Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH, |
Antoine38 | 14:62c3fd006150 | 89 | LORA_SPREADING_FACTOR, LORA_CODINGRATE, |
Antoine38 | 14:62c3fd006150 | 90 | LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON, |
Antoine38 | 14:62c3fd006150 | 91 | LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP, |
Antoine38 | 21:3ea7ab726dd4 | 92 | LORA_IQ_INVERSION_ON, 2000000 ); |
Antoine38 | 19:e50e4a513de1 | 93 | |
Antoine38 | 19:e50e4a513de1 | 94 | // Soil sensor configuration |
Antoine38 | 19:e50e4a513de1 | 95 | soilSensor.setOTPReload(false); |
Antoine38 | 19:e50e4a513de1 | 96 | soilSensor.setResolution(true); |
Antoine38 | 19:e50e4a513de1 | 97 | soilSensor.setScale(false); |
GregCr | 0:1ed39951ab7b | 98 | |
Antoine38 | 14:62c3fd006150 | 99 | debug_if( DEBUG_MESSAGE, "Starting sending loop\r\n" ); |
GregCr | 0:1ed39951ab7b | 100 | |
GregCr | 3:8b9e2a4df4b5 | 101 | led = 0; |
Antoine38 | 14:62c3fd006150 | 102 | |
Antoine38 | 18:1ee53f77b90d | 103 | while(1) { |
Antoine38 | 18:1ee53f77b90d | 104 | // Retrieving sensors data |
Antoine38 | 19:e50e4a513de1 | 105 | DHT11_state = airSensor.readData(); |
Antoine38 | 21:3ea7ab726dd4 | 106 | soilSensor.update(); |
Antoine38 | 21:3ea7ab726dd4 | 107 | |
Antoine38 | 18:1ee53f77b90d | 108 | if (DHT11_state == DHT11::OK) { |
Antoine38 | 21:3ea7ab726dd4 | 109 | msg[0] = airSensor.readTemperature(); // Temperature - Air |
Antoine38 | 21:3ea7ab726dd4 | 110 | msg[1] = airSensor.readHumidity(); // Humidity - Air |
Antoine38 | 19:e50e4a513de1 | 111 | } else { |
Antoine38 | 21:3ea7ab726dd4 | 112 | msg[0] = 0x00; // Temperature - Air |
Antoine38 | 21:3ea7ab726dd4 | 113 | msg[1] = 0x00; // Humidity - Air |
Antoine38 | 18:1ee53f77b90d | 114 | } |
Antoine38 | 23:711e46d8c9c6 | 115 | |
Antoine38 | 21:3ea7ab726dd4 | 116 | msg[2] = to_u8(soilSensor.getTemperature(), true); // Temperature - Soil |
Antoine38 | 21:3ea7ab726dd4 | 117 | msg[3] = to_u8(soilSensor.getHumidity(), false); // Humidity - Soil |
Antoine38 | 21:3ea7ab726dd4 | 118 | // Measurements types - Should be 0111 0010 -> 0x72 |
Antoine38 | 21:3ea7ab726dd4 | 119 | msg[4] = 0x72; |
Antoine38 | 21:3ea7ab726dd4 | 120 | // Greenhouse num 1 and sensors in the middle - Should be 0001 0001 |
Antoine38 | 21:3ea7ab726dd4 | 121 | msg[5] = 0x11; // id serre |
Antoine38 | 18:1ee53f77b90d | 122 | |
Antoine38 | 18:1ee53f77b90d | 123 | // Sending a new packet |
Antoine38 | 14:62c3fd006150 | 124 | debug("\r\n========\r\nSending a new Packet\r\n========\r\n"); |
Antoine38 | 21:3ea7ab726dd4 | 125 | for(int i = 0; i < BufferSize; i++) { |
Antoine38 | 21:3ea7ab726dd4 | 126 | debug("%x", msg[i]); |
Antoine38 | 14:62c3fd006150 | 127 | } |
Antoine38 | 21:3ea7ab726dd4 | 128 | debug_if( DEBUG_MESSAGE, "\n" ); |
Antoine38 | 21:3ea7ab726dd4 | 129 | memcpy( Buffer, msg, BufferSize ); |
Antoine38 | 18:1ee53f77b90d | 130 | wait_ms(10); |
Antoine38 | 18:1ee53f77b90d | 131 | Radio.Send(Buffer, BufferSize); |
Antoine38 | 18:1ee53f77b90d | 132 | |
Antoine38 | 21:3ea7ab726dd4 | 133 | // Switch the led state |
Antoine38 | 16:80f027a8b2bc | 134 | led = 1-led; |
Antoine38 | 18:1ee53f77b90d | 135 | |
Antoine38 | 21:3ea7ab726dd4 | 136 | // wait X seconds before resend data |
Antoine38 | 21:3ea7ab726dd4 | 137 | //wait(TRANSMISSION_DELAY); |
Antoine38 | 21:3ea7ab726dd4 | 138 | wait(5); |
GregCr | 0:1ed39951ab7b | 139 | } |
GregCr | 0:1ed39951ab7b | 140 | } |
GregCr | 0:1ed39951ab7b | 141 | |
Antoine38 | 21:3ea7ab726dd4 | 142 | // temperature: -30 < x < 70 |
Antoine38 | 21:3ea7ab726dd4 | 143 | // humidity: 0 < x < 100 |
Antoine38 | 21:3ea7ab726dd4 | 144 | uint8_t to_u8(float x, bool isTemp) |
Antoine38 | 21:3ea7ab726dd4 | 145 | { |
Antoine38 | 23:711e46d8c9c6 | 146 | float a = 0; |
Antoine38 | 21:3ea7ab726dd4 | 147 | float min = 0.0; |
Antoine38 | 21:3ea7ab726dd4 | 148 | float max = 100.0; |
Antoine38 | 21:3ea7ab726dd4 | 149 | if( isTemp) { |
Antoine38 | 21:3ea7ab726dd4 | 150 | min = -30.0; |
Antoine38 | 21:3ea7ab726dd4 | 151 | max = 70.0; |
Antoine38 | 21:3ea7ab726dd4 | 152 | a = 30.0; |
Antoine38 | 21:3ea7ab726dd4 | 153 | } |
Antoine38 | 21:3ea7ab726dd4 | 154 | // On passe le float entre 0 et 1.0 |
Antoine38 | 21:3ea7ab726dd4 | 155 | if(x > min && x < max) { |
Antoine38 | 21:3ea7ab726dd4 | 156 | x = (x + a) / 100.0; |
Antoine38 | 23:711e46d8c9c6 | 157 | } else if(x <= min) { |
Antoine38 | 21:3ea7ab726dd4 | 158 | x = 0.0; |
Antoine38 | 21:3ea7ab726dd4 | 159 | } else { |
Antoine38 | 21:3ea7ab726dd4 | 160 | x = 1.0; |
Antoine38 | 21:3ea7ab726dd4 | 161 | } |
Antoine38 | 21:3ea7ab726dd4 | 162 | return rint(x * 255); |
Antoine38 | 21:3ea7ab726dd4 | 163 | } |
Antoine38 | 21:3ea7ab726dd4 | 164 | |
GregCr | 0:1ed39951ab7b | 165 | void OnTxDone( void ) |
GregCr | 0:1ed39951ab7b | 166 | { |
GregCr | 5:f2431c4fe3bb | 167 | Radio.Sleep( ); |
GregCr | 7:c1bbd6c56979 | 168 | debug_if( DEBUG_MESSAGE, "> OnTxDone\n\r" ); |
GregCr | 0:1ed39951ab7b | 169 | } |
GregCr | 0:1ed39951ab7b | 170 | |
GregCr | 0:1ed39951ab7b | 171 | void OnTxTimeout( void ) |
GregCr | 0:1ed39951ab7b | 172 | { |
GregCr | 0:1ed39951ab7b | 173 | Radio.Sleep( ); |
GregCr | 7:c1bbd6c56979 | 174 | debug_if( DEBUG_MESSAGE, "> OnTxTimeout\n\r" ); |
GregCr | 0:1ed39951ab7b | 175 | } |
GregCr | 0:1ed39951ab7b | 176 |