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Dependencies:   TextLCD nRF24L01P mbed

main.cpp@8:0de75e0480aa, 2017-01-12 (annotated)

Committer:
jackmax
Date:
Thu Jan 12 16:43:57 2017 +0000
Revision:
8:0de75e0480aa
Parent:
6:19012a85ce35
Child:
9:53da36425601
Added wireless communication with remote sensor.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jackmax 6:19012a85ce35 1 #include "mbed.h"
jackmax 6:19012a85ce35 2 #include "rtos.h"
jackmax 6:19012a85ce35 3 #include "TextLCD.h"
jackmax 6:19012a85ce35 4 #include "custom-chars.h"
jackmax 8:0de75e0480aa 5 #include "nRF24L01P.h"
jackmax 8:0de75e0480aa 6
jackmax 6:19012a85ce35 7 // Host PC Communication channels
jackmax 6:19012a85ce35 8 Serial pc(USBTX, USBRX); // tx, rx
jackmax 6:19012a85ce35 9
jackmax 6:19012a85ce35 10 I2C i2c_lcd(D5,D7); // SDA, SCL pins. Change if necessary
jackmax 6:19012a85ce35 11 TextLCD_I2C lcd(&i2c_lcd, 0x4E, TextLCD::LCD16x2); // I2C exp: I2C bus, PCF8574 Slaveaddress, LCD Type
jackmax 6:19012a85ce35 12
jackmax 6:19012a85ce35 13 //Light sensor
jackmax 6:19012a85ce35 14 AnalogIn light_sensor(A1);
jackmax 6:19012a85ce35 15
jackmax 8:0de75e0480aa 16 //2.4 GHz radio
jackmax 8:0de75e0480aa 17 #define RX_ADDRESS ((unsigned long long) 0xABCDEF00)
jackmax 8:0de75e0480aa 18 #define TX_ADDRESS ((unsigned long long) 0xABCDEF01)
jackmax 8:0de75e0480aa 19 #define TRANSFER_SIZE 32
jackmax 8:0de75e0480aa 20
jackmax 8:0de75e0480aa 21 nRF24L01P radio(PB_15, PB_14, PB_13, PB_12, PB_1, PB_2);
jackmax 8:0de75e0480aa 22
jackmax 8:0de75e0480aa 23 void initRadio(int channel, int power, int datarate){
jackmax 8:0de75e0480aa 24 radio.powerDown();
jackmax 8:0de75e0480aa 25 radio.powerUp();
jackmax 8:0de75e0480aa 26
jackmax 8:0de75e0480aa 27 radio.setAirDataRate(datarate);
jackmax 8:0de75e0480aa 28 radio.setRfOutputPower(power);
jackmax 8:0de75e0480aa 29 radio.setRfFrequency(NRF24L01P_MIN_RF_FREQUENCY + 4 * channel);
jackmax 8:0de75e0480aa 30
jackmax 8:0de75e0480aa 31 radio.setCrcWidth(NRF24L01P_CRC_8_BIT);
jackmax 8:0de75e0480aa 32 radio.enableAutoAcknowledge(NRF24L01P_PIPE_P0);
jackmax 8:0de75e0480aa 33 radio.enableAutoAcknowledge(NRF24L01P_PIPE_P1);
jackmax 8:0de75e0480aa 34 radio.enableAutoRetransmit(0x0F, 0x0F);
jackmax 8:0de75e0480aa 35
jackmax 8:0de75e0480aa 36 radio.setTxAddress(TX_ADDRESS, 4);
jackmax 8:0de75e0480aa 37 radio.setRxAddress(TX_ADDRESS, 4, NRF24L01P_PIPE_P0);
jackmax 8:0de75e0480aa 38
jackmax 8:0de75e0480aa 39 radio.setRxAddress(RX_ADDRESS, 4, NRF24L01P_PIPE_P1);
jackmax 8:0de75e0480aa 40
jackmax 8:0de75e0480aa 41 // Display the (default) setup of the nRF24L01+ chip
jackmax 8:0de75e0480aa 42 pc.printf( "nRF24L01+ Frequency : %d MHz\r\n", radio.getRfFrequency() );
jackmax 8:0de75e0480aa 43 pc.printf( "nRF24L01+ Output power : %d dBm\r\n", radio.getRfOutputPower() );
jackmax 8:0de75e0480aa 44 pc.printf( "nRF24L01+ Data Rate : %d kbps\r\n", radio.getAirDataRate() );
jackmax 8:0de75e0480aa 45 pc.printf( "nRF24L01+ TX Address : 0x%010llX\r\n", radio.getTxAddress() );
jackmax 8:0de75e0480aa 46 pc.printf( "nRF24L01+ RX0 Address : 0x%010llX\r\n", radio.getRxAddress(NRF24L01P_PIPE_P0) );
jackmax 8:0de75e0480aa 47 pc.printf( "nRF24L01+ RX1 Address : 0x%010llX\r\n", radio.getRxAddress(NRF24L01P_PIPE_P1) );
jackmax 8:0de75e0480aa 48
jackmax 8:0de75e0480aa 49
jackmax 8:0de75e0480aa 50 radio.setTransferSize(TRANSFER_SIZE, NRF24L01P_PIPE_P0);
jackmax 8:0de75e0480aa 51 radio.setTransferSize(TRANSFER_SIZE, NRF24L01P_PIPE_P1);
jackmax 8:0de75e0480aa 52
jackmax 8:0de75e0480aa 53 radio.setReceiveMode();
jackmax 8:0de75e0480aa 54 radio.enable();
jackmax 8:0de75e0480aa 55 };
jackmax 8:0de75e0480aa 56
jackmax 8:0de75e0480aa 57 //Display
jackmax 6:19012a85ce35 58 void backlightTimeout(void const *arg);
jackmax 6:19012a85ce35 59 RtosTimer backlightTimer(&backlightTimeout, osTimerPeriodic, (void*)0);
jackmax 6:19012a85ce35 60
jackmax 6:19012a85ce35 61 class Display{
jackmax 6:19012a85ce35 62 public:
jackmax 6:19012a85ce35 63 int wifi_on;
jackmax 6:19012a85ce35 64 int alarm_on;
jackmax 6:19012a85ce35 65 int sync_in_progress;
jackmax 6:19012a85ce35 66 int wireless_in_progress;
jackmax 6:19012a85ce35 67 int frame;
jackmax 6:19012a85ce35 68
jackmax 6:19012a85ce35 69 time_t seconds;
jackmax 6:19012a85ce35 70 char time_str[9];
jackmax 6:19012a85ce35 71 char date_str[9];
jackmax 6:19012a85ce35 72
jackmax 6:19012a85ce35 73 static const int backlightTime = 5000;
jackmax 6:19012a85ce35 74 int backlightState;
jackmax 6:19012a85ce35 75 Display()
jackmax 6:19012a85ce35 76 {
jackmax 6:19012a85ce35 77 wifi_on = 0;
jackmax 6:19012a85ce35 78 alarm_on = 0;
jackmax 6:19012a85ce35 79 sync_in_progress = 0;
jackmax 6:19012a85ce35 80 wireless_in_progress = 0;
jackmax 6:19012a85ce35 81 frame = 0;
jackmax 6:19012a85ce35 82 backlightState = 0;
jackmax 6:19012a85ce35 83
jackmax 6:19012a85ce35 84 lcd.setCursor(TextLCD::CurOff_BlkOff);
jackmax 6:19012a85ce35 85 lcd.setUDC(C_ALRM, cc_dzwonek);
jackmax 6:19012a85ce35 86 lcd.setUDC(C_WIFI, cc_wifi);
jackmax 6:19012a85ce35 87 lcd.setUDC(C_WLC , cc_wireless);
jackmax 6:19012a85ce35 88 }
jackmax 6:19012a85ce35 89
jackmax 6:19012a85ce35 90 void backlightOff(){
jackmax 6:19012a85ce35 91 lcd.setBacklight(TextLCD::LightOff);
jackmax 6:19012a85ce35 92 backlightState = 0;
jackmax 6:19012a85ce35 93 }
jackmax 6:19012a85ce35 94
jackmax 6:19012a85ce35 95 void backlightOn(){
jackmax 6:19012a85ce35 96 lcd.setBacklight(TextLCD::LightOn);
jackmax 6:19012a85ce35 97 backlightState = 1;
jackmax 6:19012a85ce35 98 backlightTimer.start(backlightTime);
jackmax 6:19012a85ce35 99 }
jackmax 6:19012a85ce35 100
jackmax 6:19012a85ce35 101 void update(){
jackmax 6:19012a85ce35 102 //Top row of display
jackmax 6:19012a85ce35 103 char ico1 = ' ';
jackmax 6:19012a85ce35 104 char ico2 = wireless_in_progress ? (frame % 2 ? C_WLC : ' ' ) : ' ';
jackmax 6:19012a85ce35 105 char ico3 = C_ALRM;
jackmax 6:19012a85ce35 106 int ah=85, am=84;
jackmax 6:19012a85ce35 107
jackmax 6:19012a85ce35 108 time_t seconds_now = time(NULL);
jackmax 6:19012a85ce35 109 if (seconds_now != seconds) {
jackmax 6:19012a85ce35 110 seconds = seconds_now;
jackmax 6:19012a85ce35 111 strftime(time_str, 9, "%X", localtime(&seconds));
jackmax 6:19012a85ce35 112 strftime(date_str, 9, "%x", localtime(&seconds));
jackmax 6:19012a85ce35 113 }
jackmax 6:19012a85ce35 114
jackmax 6:19012a85ce35 115 lcd.locate(0,0); //Put in top row
jackmax 6:19012a85ce35 116 lcd.printf("%s%c%c%c%02d:%02d",time_str,ico1,ico2,ico3,ah,am);
jackmax 6:19012a85ce35 117
jackmax 6:19012a85ce35 118 lcd.locate(0,1); //Put in bottom row
jackmax 6:19012a85ce35 119 if (sync_in_progress) {
jackmax 6:19012a85ce35 120 lcd.printf("Synchronizacja..");
jackmax 6:19012a85ce35 121 }
jackmax 6:19012a85ce35 122 else {
jackmax 6:19012a85ce35 123 if (frame % 60 < 30) {
jackmax 6:19012a85ce35 124 lcd.printf("SmartAlarm+ Pro ");
jackmax 6:19012a85ce35 125 }
jackmax 6:19012a85ce35 126 else {
jackmax 6:19012a85ce35 127 lcd.printf(" %08s ", date_str);
jackmax 6:19012a85ce35 128 }
jackmax 6:19012a85ce35 129 }
jackmax 6:19012a85ce35 130 frame++;
jackmax 6:19012a85ce35 131 }
jackmax 6:19012a85ce35 132 };
jackmax 6:19012a85ce35 133
jackmax 6:19012a85ce35 134 Display disp;
jackmax 6:19012a85ce35 135
jackmax 6:19012a85ce35 136 //Handling user button presses
jackmax 6:19012a85ce35 137 InterruptIn button(D6);
jackmax 6:19012a85ce35 138 int userButtonLongPress = 300; //Time in ms; threshold for long press
jackmax 6:19012a85ce35 139 Timer userButtonTimer;
jackmax 6:19012a85ce35 140
jackmax 6:19012a85ce35 141 int userButtonPressed = 0, userButtonReleased = 0, backlightTimedOut = 0;
jackmax 6:19012a85ce35 142
jackmax 6:19012a85ce35 143 void userButtonPress(){
jackmax 6:19012a85ce35 144 userButtonPressed = 1;
jackmax 6:19012a85ce35 145 }
jackmax 6:19012a85ce35 146
jackmax 6:19012a85ce35 147 void userButtonRelease(){
jackmax 6:19012a85ce35 148 userButtonReleased = 1;
jackmax 6:19012a85ce35 149 }
jackmax 6:19012a85ce35 150
jackmax 6:19012a85ce35 151 void backlightTimeout(void const *arg){
jackmax 6:19012a85ce35 152 backlightTimedOut = 1;
jackmax 6:19012a85ce35 153 }
jackmax 6:19012a85ce35 154
jackmax 8:0de75e0480aa 155 //TODO: I don't think it needs to be in a separate thread,
jackmax 8:0de75e0480aa 156 //we probably can just put it into the main loop.
jackmax 8:0de75e0480aa 157 void radio_recv(void const* args){
jackmax 8:0de75e0480aa 158 char rxData[TRANSFER_SIZE+1];
jackmax 8:0de75e0480aa 159 while (1) {
jackmax 8:0de75e0480aa 160 int rx_bytes=0;
jackmax 8:0de75e0480aa 161
jackmax 8:0de75e0480aa 162 if(radio.readable(NRF24L01P_PIPE_P1)){
jackmax 8:0de75e0480aa 163 rx_bytes = radio.read(NRF24L01P_PIPE_P1, rxData, TRANSFER_SIZE);
jackmax 8:0de75e0480aa 164 rxData[TRANSFER_SIZE] = '\0';
jackmax 8:0de75e0480aa 165 pc.printf("Received %d >>%s<<\r\n",rx_bytes, rxData);
jackmax 8:0de75e0480aa 166 }
jackmax 8:0de75e0480aa 167
jackmax 8:0de75e0480aa 168 }
jackmax 8:0de75e0480aa 169 }
jackmax 8:0de75e0480aa 170
jackmax 6:19012a85ce35 171 Ticker display_update_ticker;
jackmax 6:19012a85ce35 172 int main() {
jackmax 6:19012a85ce35 173 set_time(1256729737); //DEBUG: Set RTC time to Wed, 28 Oct 2009 11:35:37
jackmax 6:19012a85ce35 174 //Initialization
jackmax 6:19012a85ce35 175 disp.backlightOn();
jackmax 6:19012a85ce35 176 button.rise(&userButtonPress);
jackmax 6:19012a85ce35 177 button.fall(&userButtonRelease);
jackmax 6:19012a85ce35 178
jackmax 8:0de75e0480aa 179
jackmax 8:0de75e0480aa 180 initRadio(6, NRF24L01P_TX_PWR_ZERO_DB, NRF24L01P_DATARATE_250_KBPS);
jackmax 8:0de75e0480aa 181 Thread radio_thread(radio_recv);
jackmax 8:0de75e0480aa 182
jackmax 6:19012a85ce35 183 while (1){
jackmax 6:19012a85ce35 184 pc.printf("ok\r\n");
jackmax 6:19012a85ce35 185
jackmax 8:0de75e0480aa 186 //Handling button presses
jackmax 6:19012a85ce35 187 if (userButtonPressed) {
jackmax 6:19012a85ce35 188 userButtonPressed = 0;
jackmax 6:19012a85ce35 189 userButtonTimer.reset();
jackmax 6:19012a85ce35 190 userButtonTimer.start();
jackmax 6:19012a85ce35 191 }
jackmax 6:19012a85ce35 192
jackmax 6:19012a85ce35 193 if (userButtonReleased) {
jackmax 6:19012a85ce35 194 userButtonReleased = 0;
jackmax 6:19012a85ce35 195 userButtonTimer.stop();
jackmax 6:19012a85ce35 196 if (userButtonTimer.read_ms() > userButtonLongPress){
jackmax 6:19012a85ce35 197 pc.printf("User button long pressed");
jackmax 6:19012a85ce35 198 disp.backlightOff();
jackmax 6:19012a85ce35 199 }
jackmax 6:19012a85ce35 200 else {
jackmax 6:19012a85ce35 201 pc.printf("User button short pressed");
jackmax 6:19012a85ce35 202 disp.backlightOn();
jackmax 6:19012a85ce35 203 }
jackmax 6:19012a85ce35 204 }
jackmax 6:19012a85ce35 205
jackmax 8:0de75e0480aa 206 //Handling backlight
jackmax 6:19012a85ce35 207 if (backlightTimedOut){
jackmax 6:19012a85ce35 208 backlightTimedOut = 0;
jackmax 6:19012a85ce35 209 disp.backlightOff();
jackmax 6:19012a85ce35 210 }
jackmax 6:19012a85ce35 211
jackmax 8:0de75e0480aa 212 //Updating display
jackmax 6:19012a85ce35 213 disp.update();
jackmax 8:0de75e0480aa 214
jackmax 6:19012a85ce35 215 Thread::wait(100);
jackmax 6:19012a85ce35 216 };
jackmax 6:19012a85ce35 217 }
jackmax 6:19012a85ce35 218
jackmax 6:19012a85ce35 219
jackmax 6:19012a85ce35 220