Stephen Dickey / Mbed 2 deprecated C027_CANInterfaceComm

This tests the CAN interface between two LISA C027 MBED Boards. By connecting the two boards, pins 1,2,3 respectively on the CAN interface, and loading and executing this code on BOTH boards, CAN messages will be received, and printed, on the PC-USB console interface of both devices.

Dependencies:   C027-REVB UbloxUSBModem mbed

Fork of C027_ModemTransparentUSBCDC_revb by Stephen Dickey

main.cpp

Committer:
dixter1
Date:
2013-12-13
Revision:
0:92ab4f4846f8
Child:
1:15b5edb4a91f

File content as of revision 0:92ab4f4846f8:

#include "mbed.h"
#include "C027.h"
#include "WANDongle.h"
#include "USBSerialStream.h"
#include "UbloxCDMAModemInitializer.h"
#include "UbloxGSMModemInitializer.h"

DigitalOut mdm_activity(LED);

int main() 
{
    int led_toggle_count = 5;

    // the instantiation of the type, calls C027::C027
    C027 c027;
    
    c027.mdmPower(true);

#if 0
    while(1) {
        mdm_activity = !mdm_activity;
        wait(0.2);
    }
#else
    while( led_toggle_count-- > 0 )
    {
        mdm_activity = !mdm_activity;
        wait(0.2);
    }
#endif
        
    // open the mdm serial port
    WANDongle mdmDongle;
    USBSerialStream mdmStream(mdmDongle.getSerial(1/* the CDC usually 0 or 1, LISA-C requires CDC1*/));
    USBHost* host = USBHost::getHostInst();
    mdmDongle.addInitializer(new UbloxCDMAModemInitializer(host));
    mdmDongle.addInitializer(new UbloxGSMModemInitializer(host));
   
    // open the PC serial port and (use the same baudrate)
    Serial pc(USBTX, USBRX);
    pc.baud(MDMBAUD);
    
    while (1)
    {
        uint8_t buf[64];
        size_t len;
        int i;
        
        if (!mdmDongle.connected())
        {
            mdmDongle.tryConnect();
        }
        else
        {
        
            // transfer data from pc to modem
            len = mdmStream.space();
            if (len>0)
            {
                if (len > sizeof(buf))
                    len = sizeof(buf);
                for (i = 0; (i < len) && pc.readable(); )
                    buf[i++] = pc.getc();
                if (OK == mdmStream.write(buf, i))
                    /* do something? */;
            }
            // transfer data from modem to pc
            len = mdmStream.available();
            if ((len>0) && pc.writeable())
            {
                if (len > sizeof(buf))
                    len = sizeof(buf);
                if (OK == mdmStream.read(buf, &len, len))
                {
                    for (i = 0; (i < len); ) 
                    {
                        mdm_activity=!mdm_activity;
                        pc.putc(buf[i++]);
                    }
                    
                    // default the led to off 
                    mdm_activity=0;
                }
            }
        }
    }
}