cgi scripts added

derekmolloy · Jul 7, 2018 · 89b99cc · 89b99cc
1 parent d7ea616
commit 89b99cc
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Showing 6 changed files with 56 additions and 1 deletion.
diff --git a/chp09/dcmotor/DCApp b/chp09/dcmotor/DCApp
diff --git a/chp09/dcmotor/DCMotorApp.cpp b/chp09/dcmotor/DCMotorApp.cpp
@@ -5,13 +5,14 @@
 * directory for copyright and GNU GPLv3 license information.            */
 
 #include <iostream>
+#include <unistd.h>
 #include "motor/DCMotor.h"
 using namespace std;
 using namespace exploringBB;
 
 int main(){
    cout << "Starting EBB DC Motor Example" << endl;
-   DCMotor dcm(new PWM("pwm_test_P9_42.12"), 116); //will export GPIO116
+   DCMotor dcm(new PWM("pwmchip0/pwm-0:0/"), 116); //will export GPIO116
    dcm.setDirection(DCMotor::ANTICLOCKWISE);
    dcm.setSpeedPercent(50.0f);   //make it clear that a float is passed
    dcm.go();

diff --git a/chp11/cgi-bin/temperature.cgi b/chp11/cgi-bin/temperature.cgi
@@ -0,0 +1,10 @@
+#!/bin/bash
+printf "Content-type: text/html\n\n"
+printf "<html><head>"
+printf "<meta charset=\"UTF-8\">"
+printf "<title>Beagle Board Temperature</title></head>"
+printf "<body><h1>Beagle Board Temperature</h1><para>"
+printf "The temperature in the room is "
+/usr/local/bin/tmp36raw
+printf " degrees Celsius</para></html>"
+
diff --git a/chp11/cgi-bin/test.cgi b/chp11/cgi-bin/test.cgi
@@ -0,0 +1,11 @@
+#!/bin/bash
+printf "Content-type: text/html\n\n"
+printf "<html><head>"
+printf "<meta charset=\"UTF-8\">"
+printf "<title>Hello Beagle Board</title></head>"
+printf "<body><h1>Hello Beagle Board</h1><para>"
+hostname
+printf " has been up "
+uptime
+printf "</para></html>"
+
diff --git a/chp11/tmp36adc/tmp36raw b/chp11/tmp36adc/tmp36raw
diff --git a/chp11/tmp36adc/tmp36raw.cpp b/chp11/tmp36adc/tmp36raw.cpp
@@ -0,0 +1,33 @@
+#include <iostream>
+#include <sstream>
+#include <fstream>
+using namespace std;
+
+#define ADC_PATH "/sys/bus/iio/devices/iio:device0/in_voltage"
+#define ADC 0
+
+float getTemperature(int adc_value) {     // from the TMP36 datasheet
+   float cur_voltage = adc_value * (1.80f/4096.0f); // Vcc = 1.8V, 12-bit
+   float diff_degreesC = (cur_voltage-0.75f)/0.01f;
+   return (25.0f + diff_degreesC);
+}
+
+int readAnalog(int number){
+   stringstream ss;
+   ss << ADC_PATH << number << "_raw";
+   fstream fs;
+   fs.open(ss.str().c_str(), fstream::in);
+   fs >> number;
+   fs.close();
+   return number;
+}
+
+int main(){
+   //std::cout << "Starting the TMP36 example" << std::endl;
+   //std::cout << "The ADC value input is: " << readAnalog(ADC) << endl;
+   float temp = getTemperature(readAnalog(ADC));
+   float fahr = 32 + ((temp * 9)/5);    // convert deg. C to deg. F
+   //cout << "Temperature is " << temp << "°C (" << fahr << "°F)" << endl;
+   cout << temp;
+}
+