Diff: main.cpp

Revision:

0:7ce46d3f9f5d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Aug 08 02:27:42 2014 +0000
@@ -0,0 +1,152 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ * 
+ */
+#include "mbed.h"
+#include "TransLayer.h"
+#include "MbedConsole.h"
+#include "MbedPerAccess.h"
+
+/**
+ * \brief   The main entry point of our application.
+ * \author  Navin Bhaskar
+ */ 
+
+Serial pc(USBTX, USBRX);
+/**
+*    \fn          number(char* buff)
+*    \brief       This function converts a string into a number.
+*    \param[in]   buff    buffer containg string representation of a number (should be decimal representation).
+*    \retrun      converted number
+*/
+
+int number(char *buff)
+{
+    int i = strlen(buff);
+    int j,temp=0;
+
+    for(j=0; j<i; j++) {
+        if(buff[j] >= '0' && buff[j] <= '9') {
+            temp = temp*10;
+            temp = temp + buff[j] - '0';
+
+        }
+    }
+
+    return temp;
+}
+/**
+*  \fn         pin_control(char* buff, int len)
+*  \brief      sets or resets a pin
+*/
+void pin_control(Console * cons, PerAccess * per, char* buff, int len)
+{
+    uint temp = number(buff);
+    uint pinno, pinst;
+    uint status;
+
+    if( len < 3) {
+        cons->printErr(ERR_INVALID_ARG);
+    } else {
+        pinst = temp%10;        // LSB is pin state
+        pinno = temp/10;        // rest of it is pin number
+        status = per->digitalOut(pinno, pinst);
+        cons->printErr(status);
+    }
+}
+
+/**
+*    \fn        analog_out(char* buff, int len)
+*    \brief     Outputs an anolog voltage on a given PWM channel
+*/
+
+void analog_out(Console * cons, PerAccess * per, char* buff, int len)
+{
+    int temp = number(buff);
+    int pinno, pinval;
+    uint status;
+    if( len < 3) {
+        cons->printErr(ERR_INVALID_ARG);
+        return ;
+    }
+
+    pinno = temp&0xff;        // LSB is pin value
+    pinval = temp>>8;           // MSB is pin no
+    
+    status = per->analogOut(pinno, pinval);
+    cons->printErr(status);
+}
+
+/**
+*  \fn       analog_in(char* buff, int len)
+*  \brief    This function reads an analog volatge on a given channel and prints
+*            it over on the serial terminal
+*/
+
+void analog_in(Console * cons, PerAccess * per, char* buff, int len)
+{
+    uint adc_val;
+    uint ch=number(buff);
+    uint status;
+    status = per->analogIn(ch, &adc_val);
+    if (status == ERR_SUCCESS) {
+        cons->printf("%d\n", adc_val);
+    }
+    cons->printErr(status);
+}
+
+/**
+*    \fn        read_pin(char* buff, int len)
+*    \brief     This function reads digital logic level at a specified pin and prints
+*               it over serial port prints 1 if high else it prints 0
+*/
+
+void read_pin(Console * cons, PerAccess * per, char* buff, int len)
+{
+    uint read_val;
+    uint pin=number(buff);
+    uint status;
+
+    status = per->digitalIn(pin, &read_val);
+
+    if (status == ERR_SUCCESS) {
+        cons->printf("%d\n", read_val);
+    }
+    cons->printErr(status);
+}
+
+
+int main(void)
+{
+    TransLayer comm_packet;
+    MbedConsole cons;
+    MbedPerAccess per;
+
+    Console *transCons;
+    PerAccess *transPer;
+
+    transCons = &cons;
+    transPer = &per;
+    
+
+    comm_packet.AddService(pin_control, 'P');
+    comm_packet.AddService(analog_out, 'A');
+    comm_packet.AddService(analog_in, 'I');
+    comm_packet.AddService(read_pin, 'R');
+    comm_packet.MainLoop(transCons, transPer);
+
+    while(1);
+}