Diff: main.cpp

Revision:

0:e9b3484aed88

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Dec 10 19:11:44 2015 +0000
@@ -0,0 +1,87 @@
+#include <mbed.h>
+#include <Adafruit_ADS1015.h>
+using namespace std;
+/***************************************
+LED 1 = Standy by mode
+LED 2 = Reading Message
+LED 3 = Wrighting Message
+From The Keyboard
+Cell Zero == 3 is if they are talking to us
+Second character 0 == start
+                 1 == stop
+***************************************/
+/**************************************
+Initial Parameters
+***************************************/
+I2C i2c(p28, p27);           //pins 27/28 for I2C interface
+Adafruit_ADS1015 ads(&i2c);
+Serial pc(USBTX, USBRX); // tx, rx
+DigitalOut led(LED1);    // LED 1 for state 1
+DigitalOut led2(LED2);   // LED 2 for state 2
+DigitalOut led3(LED3);   // LED 3 for state 3
+CAN can(p30, p29);       //p30(rx) and p29(tx)
+LocalFileSystem local("local"); //Output file location
+CANMessage msg;
+char state;
+FILE *fp = fopen("/local/out.txt", "w"); //File initialization
+int i = 0;
+/*************************************
+Function Status keeps checking the bus waiting for the KeyBoard Subgroup
+To tell us to start reading from the blackbox.
+*************************************/
+void get_state()
+{
+    can.read(msg);
+    char Cell_One = msg.data[0];
+    char Cell_Two = msg.data[1];
+    if (Cell_One == '3' && Cell_Two == '0')    {
+        pc.printf("Reading \r \n");
+        state = 2;
+    } else if (Cell_One == '3' && Cell_Two == '1') {
+        pc.printf("Writing \r \n");
+        state = 3;
+        i = 0;
+    } else
+        pc.printf("Waiting \r \n");
+    state = state;
+
+}
+int main()
+{
+    state = 1;
+    pc.baud(9600);
+    pc.printf("\r \n");
+    pc.printf("\r \n");
+    pc.printf("Hello! \r \n");
+    pc.printf("Note: ADC Range +/- 6.144 (1 bit = 3mV/ADS1015, 0.1875mV/ ADS1115)\r \n");
+    pc.printf("Waitng.... \r \n");
+    uint16_t adc0; // channel coming from the black box
+    float conversion_factor = .003;
+    can.attach(&get_state , CAN::RxIrq);
+    while (1) {
+
+        if (state == 2) {
+            adc0 = ads.readADC_SingleEnded(0); // read channel 0
+            pc.printf("AIN0: %f\r\n", adc0*conversion_factor);   // print channel 0
+            fprintf(fp, "%f\r\n", adc0*conversion_factor);
+            led = 0;
+            led2 = 1;
+            led3 = 0;
+            wait(0.01); //100 hz
+        } else if (state == 3) {
+            fclose(fp);
+            led = 0;
+            led2 = 0;
+            led3 = 1;
+            if(i == 0) {
+                pc.printf("File Complete \r \n");
+                i++;
+            }
+            state = 1;
+        } else {
+            led = 1;
+            led2 = 0;
+            led3 = 0;
+        }
+    }
+}
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