main.cpp

00001 /* xej-Nucleo-F401RE-and-HC05-Bluetooth.cpp
00002   Test Nucleo-F401RE with HC05 Bluetooth adapter
00003   
00004   Wanted to use it for upload of telemetry
00005   type a command and hc053 port and it will be echoed back
00006   
00007   
00008   pin-HC05  Pin-MBed
00009    TX   --- PA_12
00010    RX   --- PA_11
00011    +5V  --- +5 on CN6
00012                Also worked on 3.3V on CN6
00013    GND  --- GND on CN6
00014    STATE--- NC - not connected
00015    EN   --- NC - not connected
00016   
00017    If you cycle power on mbed you may need to close 
00018    and re-open the port connection which
00019    is pretty easy when using RealTerm.
00020   
00021    tested with Honbay® Wireless Bluetooth Host Serial Transceiver Module   
00022    Draws about 30mA when starting then drops back
00023    to 10mA when idle with a jump to about 20 mA 
00024    when transmitting.
00025    
00026    ***
00027   * By Joseph Ellsworth CTO of A2WH
00028   * Take a look at A2WH.com Producing Water from Air using Solar Energy
00029   * March-2016 License: https://developer.mbed.org/handbook/MIT-Licence 
00030   * Please contact us http://a2wh.com for help with custom design projects.
00031   ***
00032   
00033 */
00034 #include "mbed.h"
00035 #include "multi-serial-command-listener.h"
00036 
00037 char myCommand[SCMD_MAX_CMD_LEN+1];
00038 
00039 
00040 //------------------------------------
00041 // RealTerm or Teraterm config
00042 // 9600 bauds, 8-bit data, no parity
00043 //------------------------------------
00044 
00045 //Serial hc05(D1, D0); // PA_2, PA_3 This one does not work because redirected to USBTX, USBRX
00046 //                     //  can be fixed by changing solder bridges                      
00047 Serial hc052(D10,D2); // PB_6, PA_10 This one works
00048 Serial hc053(PA_11, PA_12);  // This one works
00049 Serial pc(USBTX, USBRX); 
00050  
00051 DigitalOut myled(LED1);
00052 
00053  
00054 void commandCallback(char *cmdIn, void *extraContext) {
00055   strcpy(myCommand, cmdIn);
00056   // all our commands will be recieved async in commandCallback
00057   // we don't want to do time consuming things since it could
00058   // block the reader and allow the uart to overflow so we simply 
00059   // copy it out in the callback and then process it latter. 
00060   
00061   // See data_log one of dependants of this library for example 
00062   // of using *extraContext
00063 }
00064  
00065 int main() {
00066   pc.baud(9600);
00067   //hc05.baud(9600);
00068   hc052.baud(9600);
00069   hc053.baud(9600);
00070   int i = 1;
00071   struct SCMD *cmdProc = scMake(&hc053, commandCallback, NULL)  ;
00072     
00073   pc.printf("Test HC05 Bluetooth Connection !\r\n");
00074   while(1) { 
00075       wait(1);
00076       //hc05.printf("d1/do this program runs since %d seconds.\r\n", i);
00077       hc052.printf("d10/d2 %d seconds\r\n", i);
00078       hc053.printf("PA_11/PA_12 %d seconds\r\n", i);
00079       pc.printf("This program runs since %d seconds.\r\n", i++);
00080       myled = !myled;
00081       if (myCommand[0] != 0) {     
00082           pc.printf("Command Recieved =%s\r\n", myCommand);
00083           hc053.printf("\r\nCommand Recieved =%s\r\n", myCommand);
00084           if (strcmp(myCommand,"clear") == 0) {
00085             i = 0;
00086           }
00087           myCommand[0] = 0; // clear until we recieve the next command
00088       }        
00089   }
00090 }
00091