Diff: main.cpp

Revision:

0:6877fadef7d5

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+/*
+ 
+  TX for remote Thermostat
+    
+  By: www.emcu.eu
+  Date: 04-January-2017
+ 
+  NUCLEO-L152RE and AUREL RTX-MID-3V (433.92 MHz - mod. ASK - 3Vcc)
+ 
+  AUREL RTX-MID-3V 
+  Italian AUREL manual is here: http://www.aurelwireless.com/wp-content/uploads/manuale-uso/650201033G_mu.pdf
+  English AUREL manual is here: http://www.aurelwireless.com/en/radiomodem-data-transceivers/ 
+  https://www.futurashop.it/index.php?route=product/product&filter_name=RTX-MID-3V&product_id=2788
+ 
+  CONNECTIONS from AUREL RTX-MID-3V to NUCLEO L152RE
+  PIN1    Antenna 17cm
+  PIN2    GND
+  PIN4    TX connected to TX on NUCLEO L152RE
+  PIN5    Tx/Rx connected to PA_10 on NUCLEO L152RE 
+  PIN6    ENABLE connected to PB_3 on NUCLEO L152RE
+  PIN7    GND
+  PIN8    Analog Out not connected
+  PIN9    RX connected to RX on NUCLEO L152RE
+  PIN10   VCC connected to 3,3V on NUCLEO L152RE
+  
+  NOTE: between GND and VCC put a capacitor of 0,1uF and a second capacitor 
+  of 10uF
+ 
+    
+    ********** IMPORTANT IMPORTANT IMPORTANT IMPORTANT **********
+    
+    This project use the USART for this reason you must do the below 
+    modifications on NUCLEO-L152RE, more info are here:
+    http://www.emcu.it/NUCLEOevaBoards/U2andL152/U2andL152.html#USART2_for_communication_with_shield_or
+    
+    Put a jumper on SB62 and on SB63
+    Remove a 0 ohm resistor from SB13 and SB14
+    
+    ATTENTION:
+    After this modifications, you lost the possibility to use the virtual comm 
+    to connect the NUCLEO to the PC .
+ 
+    *************************************************************  
+  
+    
+    ********** EXPLANATIONS:
+    
+    Build two boards one with RX software and another with TX software. 
+    When you press Blue button (and hold it)
+    on the board_TX, the green LED must turn ON, the same 
+    on the board_RX the green LED must turn ON.
+    If you release the Blue button (on the board_TX) the green LED must go OFF 
+    on both on the boards.
+    
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ 
+ 
+ */
+ 
+ 
+#include "mbed.h"
+ 
+Serial pc(SERIAL_TX, SERIAL_RX);    // tx, rx
+DigitalOut RTX_DIR(PA_10);          // 1 == TX  0 == RX
+DigitalOut RTX_Enable(PB_3);        // 1 == RTX enable  0 == RTX disable
+ 
+DigitalOut myled(LED1);                 // This LED is on NUCLEO-L152RE
+DigitalIn BlueButton(USER_BUTTON);      // This is Blue-Button and is on NUCLEO-L153RE
+ 
+#define Pressed 0
+#define NotPressed 1
+#define Enable 1
+#define Disable 0
+#define ACK 2
+#define OK 1
+#define FAIL 0
+#define Received 0
+#define NotReceived 1
+ 
+#define ON  1
+#define OFF 0
+#define TX 1
+#define RX 0
+
+#define Baud 1200               // 9600
+#define DlyForEndTX 220         // 220
+#define MaxReTX 40              // 40
+#define DebTime 200             // Debounce time
+#define WaitBeforeToDoRX 200    // 100
+ 
+int Car='\0';
+int RisultatoRX=FAIL;
+int MemBlueButton=10;
+int MemOkFail=FAIL;
+int MemOK=FAIL;
+int MemOFF=NotReceived;
+int MemON=NotReceived;
+
+int MemBB = NotPressed;
+ 
+ 
+int TestRX_Data(void);
+void RTX_StartUp(void);
+void RTX_PowerDown(void);
+void RTX_PowerON(void);
+void RTX_TX(void);
+void RTX_RX(void);
+ 
+int CarStr[3];
+int PuntCar = 0;
+
+void callback() {
+    // Note: you need to actually read from the serial to clear the RX interrupt
+    Car = pc.getc();
+    if (Car == '#' & PuntCar == 0)
+        {               
+        PuntCar = 0;
+        CarStr[PuntCar] = Car;
+        PuntCar++;
+        }        
+    else if (PuntCar > 0 & PuntCar < 3)
+        {          
+        CarStr[PuntCar] = Car;
+        PuntCar++;
+        }
+}
+
+
+//
+// MAIN *****************************************************************
+//
+int main()
+{
+    int n=0;
+    int Rip=3;
+    
+    pc.baud(Baud); 
+    pc.attach(&callback, pc.RxIrq); // It is for reading under Interrupt the 
+                                    // RX from USART
+    
+    // Start Up of the RTX-MID and put it in RX mode
+    RTX_StartUp();
+    
+    MemBB = Pressed;
+    MemOFF = NotReceived;
+    MemON = NotReceived;
+        
+    while (1)
+    {
+        // Test the status of the Blue button (TX) ************************
+        if ((BlueButton == Pressed) && (MemBB == NotPressed))
+            { 
+            wait_ms(DebTime);   // Debounce
+            if (BlueButton == Pressed)
+                {   
+                MemBB = Pressed; 
+                n=0;  
+                while (TestRX_Data() != OK) 
+                    {    
+                    RTX_TX();           // RTX-MID on TX mode        
+                    // Send Message
+                    pc.printf("#1@");   // Send Command ON
+                    wait_ms(DlyForEndTX); 
+                    RTX_RX();           // RTX-MID on RX mode 
+                    wait_ms(WaitBeforeToDoRX);       // 100
+                    for (Rip=0; Rip<40; Rip++)  // 40
+                        {  
+                        if (TestRX_Data() == OK)  
+                            {
+                            myled = ON;  
+                            goto EndBBpressed;
+                            // break;  
+                            }  
+                        }  
+                    n++;
+                    if (n > MaxReTX)
+                        break;                                                                      
+                    }
+                }     
+            // myled = ON;
+            wait(2);
+            MemBB = NotPressed;
+            EndBBpressed:
+            RTX_RX(); // RTX-MID on RX mode
+            }
+        
+        
+        if ((BlueButton == NotPressed) && (MemBB == Pressed))
+            {    
+            wait_ms(DebTime);   // Debounce
+            if (BlueButton == NotPressed) 
+                {  
+                MemBB = NotPressed;
+                n=0;          
+                while (TestRX_Data() != ACK)
+                    {    
+                    RTX_TX();           // RTX-MID on TX mode        
+                    // Send Message
+                    pc.printf("#2@");   // Send Command OFF
+                    wait_ms(DlyForEndTX); 
+                    RTX_RX();           // RTX-MID on RX mode
+                    wait_ms(WaitBeforeToDoRX);       // 100
+                    for (Rip=0; Rip<40; Rip++)  // 40
+                        {                    
+                        if (TestRX_Data() == ACK)
+                            {   
+                            myled = OFF;  
+                            goto EndBBnotpressed;
+                            // break;      
+                            }
+                        }   
+                    n++;
+                    if (n > MaxReTX)
+                        break;                                     
+                    }                                                            
+                }
+            // myled = OFF; 
+            wait(2);
+            MemBB = Pressed; 
+            EndBBnotpressed:    
+            RTX_RX(); // RTX-MID on RX mode
+            }   
+            
+        // END Test the status of the Blue button (TX) ************************
+        
+   
+                
+    }
+}
+ 
+//
+// END MAIN *************************************************************
+//
+ 
+ 
+//
+// Decode Message
+//
+// REMEMBER: 
+// before to use this function must put in RX mode the RTX
+//
+int TestRX_Data(void)
+    {
+    int OkFail=0; // 1==OK==ON  2==ACK==OFF
+    
+    if (CarStr[0]=='#' & CarStr[1]=='1' & CarStr[2]=='@')   
+        OkFail=1; // OK==ON               
+    else if (CarStr[0]=='#' & CarStr[1]=='2' & CarStr[2]=='@') 
+        OkFail=2; // ACK==OFF
+    else;
+         
+    if (PuntCar >= 3) // Reset the CarStr & PuntCar
+        { 
+        CarStr[0] = '0';
+        CarStr[1] = '1';
+        CarStr[2] = '2';
+        PuntCar = 0;                  
+        }
+        
+    return OkFail;         
+    }
+    
+void RTX_StartUp(void)
+    {
+    RTX_Enable = Disable;
+    wait_ms(10);        
+    RTX_Enable = Enable;
+    wait_ms(1); 
+    RTX_DIR = TX;     // RTX-MID in TX mode
+    wait_ms(1);       // Wait the stabilizzation of the transceiver
+    RTX_Enable = Disable;
+    wait_ms(10);        
+    RTX_Enable = Enable;
+    wait_ms(1);                                            
+    RTX_DIR = RX;     // RTX-MID in RX mode
+    wait_ms(1);       // Wait the stabilizzation of the transceiver             
+    RTX_Enable = Disable;
+    wait_ms(1);
+    RTX_Enable = Enable;
+    wait_ms(1);         
+    }
+ 
+void RTX_PowerDown(void)
+    {
+    RTX_Enable = Disable;
+    wait_ms(10);
+    }
+    
+void RTX_PowerON(void)
+    {
+    RTX_Enable = Disable;
+    wait_ms(1);
+    }    
+    
+void RTX_TX(void)
+    {
+    // RTX_Enable = Disable;
+    // wait_ms(10); 
+    // RTX_Enable = Enable;
+    // wait_ms(1);        
+    RTX_DIR = TX;     // RTX-MID in TX mode
+    wait_us(400);     // Wait the stabilizzation of the transceiver     
+    }        
+ 
+void RTX_RX(void)
+    {
+    // RTX_Enable = Disable;
+    // wait_ms(10); 
+    // RTX_Enable = Enable;
+    // wait_ms(1);  
+    // RTX_DIR = TX;     // RTX-MID in TX mode
+    // wait_ms(1);       // Wait the stabilizzation of the transceiver
+    RTX_DIR = RX;     // RTX-MID in RX mode
+    wait_us(40);
+    RTX_Enable = Disable;
+    wait_us(20);       
+    RTX_Enable = Enable; 
+    wait_us(200);                                                             
+    }
+ 
+ 
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