Enrico Marinoni
This project explain how to use Nucleo-L152RE and AUREL RTX-MID-3V for create a intelligent radio control. In another words, there is two transceivers that send data and an ACK if the reception is correct.
Revision 0:e3fc2197fe07, committed 2014-06-02
- Comitter:
- emcu
- Date:
- Mon Jun 02 18:38:35 2014 +0000
- Commit message:
- This project explain how to use Nucleo-L152RE and AUREL RTX-MID-3V for create a intelligent radio control.; In another words, there is two transceivers that send data and an ACK if the reception is correct.
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r e3fc2197fe07 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Jun 02 18:38:35 2014 +0000
@@ -0,0 +1,289 @@
+/*
+
+ By: www.emcu.it
+
+ NUCLEO-L152RE and AUREL RTX-MID-3V
+
+ 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: from 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 another on SB63
+ Remove a 0 ohm resistor from SB13 and SB14
+
+ After this modifications, you lost the possibility to use the virtual comm to connect
+ the NUCLEO to the PC.
+
+ *************************************************************
+
+
+ ********** EXPLANATIONS:
+
+ If you build two boards identically when you press a Blue button on the board n.1,
+ the green LED flashing, release the Blue button and the transmission is started.
+ On the board n.2 the green LED is turn on (for 3 sec) and an ACK is send to board n.1.
+ After some second, on the board n.1, the green LED is turn on (for 3 sec) to indicate
+ that the command sent to the board n.2 was received correctly.
+
+
+ *
+ * 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 ON 1
+#define OFF 0
+#define TX 1
+#define RX 0
+
+int Car='\0';
+int RisultatoRX=FAIL;
+
+
+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 (PuntCar < 3)
+ {
+ CarStr[PuntCar] = Car;
+ PuntCar++;
+ }
+}
+
+
+int main()
+{
+ int n=0;
+
+ pc.baud(1200);
+ 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();
+
+ while (1)
+ {
+
+ if (BlueButton == Pressed)
+ {
+ while (BlueButton == Pressed)
+ {
+ myled = !myled;
+ wait(0.2);
+ }
+ myled = OFF;
+
+ for (n=0; n<20; n++)
+ {
+ RTX_TX(); // RTX-MID on TX mode
+ // Send Message
+ pc.printf("#?@"); // Send Command
+ wait_ms(100);
+ RTX_RX(); // RTX-MID on RX mode
+
+ // Test if the Message is arrived
+ RisultatoRX = TestRX_Data();
+ if (RisultatoRX == OK)
+ {
+ myled = ON;
+ wait(3);
+ }
+ else
+ myled = OFF;
+ }
+ RTX_RX(); // RTX-MID on RX mode
+ }
+
+ // Decode Message
+ // 0==FAIL 1==OK 2==ACK
+ RisultatoRX = TestRX_Data();
+ if (RisultatoRX == OK)
+ {
+ myled = ON;
+ // Send ACK
+ for (n=0; n<10; n++)
+ {
+ RTX_TX(); // RTX-MID on TX mode
+ pc.printf("#K@"); // Send ACK
+ wait_ms(100);
+ }
+ wait(1);
+ // Send ACK
+ for (n=0; n<20; n++)
+ {
+ RTX_TX(); // RTX-MID on TX mode
+ pc.printf("#K@"); // Send ACK
+ wait_ms(100);
+ }
+ RTX_RX(); // RTX-MID on RX mod
+ }
+ else if (RisultatoRX == ACK)
+ {
+ myled = ON;
+ wait(3);
+ RTX_RX(); // RTX-MID on RX mod
+ }
+ else
+ myled = OFF;
+
+ }
+}
+
+//
+// *************************************************************
+//
+
+
+//
+// Decode Message
+//
+// REMEMBER:
+// before to use this function must put in RX mode the RTX
+//
+int TestRX_Data(void)
+ {
+ int OkFail=0; // 0==FAIL 1==OK 2==ACK
+
+ if (CarStr[0]=='#' & CarStr[1]=='?' & CarStr[2]=='@')
+ OkFail=1; // OK
+ else if (CarStr[0]=='#' & CarStr[1]=='K' & CarStr[2]=='@')
+ OkFail=2; // ACK
+ 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_ms(10); // 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_ms(1);
+ RTX_Enable = Disable;
+ wait_ms(10);
+ RTX_Enable = Enable;
+ wait_ms(1);
+ }
+
diff -r 000000000000 -r e3fc2197fe07 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Jun 02 18:38:35 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/0b3ab51c8877 \ No newline at end of file