Mateusz Rozmus
K64F Ethernet server with DS18B20
Dependencies: DS1820 EthernetInterface mbed-rtos mbed
Fork of
eth_lib
by 
Jacek Kolodziej
Revision 1:8b553350350e, committed 2018-06-11
- Comitter:
- mrozmus
- Date:
- Mon Jun 11 11:14:19 2018 +0000
- Parent:
- 0:9b72cde90412
- Commit message:
- Ethernet server with DS18B20 temperature sensor
Changed in this revision
| DS1820.lib | Show annotated file Show diff for this revision Revisions of this file |
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DS1820.lib Mon Jun 11 11:14:19 2018 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/Sissors/code/DS1820/#c591209285e9
--- a/main.cpp Sat Apr 21 08:43:33 2018 +0000
+++ b/main.cpp Mon Jun 11 11:14:19 2018 +0000
@@ -1,18 +1,42 @@
#include "mbed.h"
#include "EthernetInterface.h"
+#include "DS1820.h"
-#define MBED_DEV_IP "192.168.0.52"
-#define MBED_DEV_MASK "255.255.255.0"
-#define MBED_DEV_GW "0.0.0.0"
+#define MBED_DEV_IP "192.168.144.24"
+#define MBED_DEV_MASK "255.255.0.0"
+#define MBED_DEV_GW "192.168.144.25"
#define ECHO_SERVER_PORT 80
-Serial pc(USBTX, USBRX); // Debug via USB port.
+#define DATA_PIN A1
+
+Ticker timer;
+
DigitalOut red_led(LED_RED, 1);
DigitalOut green_led(LED_GREEN, 1);
+Serial pc(USBTX, USBRX); // Debug via USB port.
-char find_green[50] = "GET /demo_form.asp?LED_COLOUR=GREEN";
-char find_red[50] = "GET /demo_form.asp?LED_COLOUR=RED";
+
+DS1820 probe(DATA_PIN);
+
+char find_temperature[50] = "GET /demo_form.asp?OPTION=TEMPERATURE";
+char find_lasttemperature[50] = "GET /demo_form.asp?OPTION=LAST";
+
+int counter;
+void attime()
+{
+probe.convertTemperature(true, DS1820::all_devices);
+ if(probe.temperature()>30)
+ {
+ red_led=0;
+ green_led=1;
+ }
+ else
+ {
+ red_led=1;
+ green_led=0;
+ }
+}
int main (void) {
pc.printf("\nHello!\n\r");
@@ -29,6 +53,7 @@
server.listen(); // Start listening for incoming connections.
while (true) {
+ timer.attach(&attime,1);
pc.printf("\nWait for new connection...\n\r");
TCPSocketConnection client; // TCP socket connection.
server.accept(client); // Accept a new connection.
@@ -38,55 +63,97 @@
char buffer[600];
int ret;
+ char value[5];
+ char last5values[5][5];
+ int option =1;
+
/////////////GET//////////////
while (true) {
- ret = client.receive(buffer, sizeof(buffer)-1); // Receive data from the remote host.
+ ret = client.receive(buffer, sizeof(buffer)-1);
+
+ // Receive data from the remote host.
if (ret <= 0)break;
buffer[ret] = '\0';
- printf("Received %d chars from server:\n\r%s\n\r", ret, buffer);
+ pc.printf("Received %d chars from server:\n\r%s\n\r", ret, buffer);
- // LED colour seeking:
- if(strstr(buffer, find_red)>0) {
- red_led=0;
- green_led=1;
+ // Option seeking:
+ if(strstr(buffer, find_temperature)>0) {
+ probe.convertTemperature(true, DS1820::all_devices); //Start temperature conversion, wait until ready
+ pc.printf("It is %3.1foC\r\n", probe.temperature());
+ sprintf(value,"%3.1f",probe.temperature());
+ sprintf(last5values[counter],"%3.1f",probe.temperature());
+ if(counter==4)
+ {
+ counter=0;
+ }
+ else
+ {
+ counter++;
+ }
+ option = 1;
}
- if(strstr(buffer, find_green)>0) {
- red_led=1;
- green_led=0;
- }
- }
- /////////////SET//////////////
+ if(strstr(buffer,find_lasttemperature)>0){
+
+ option = 2;
+ }
+
+ }
// Webpage here:
-
- char http_cmd[] = "<!DOCTYPE html> <html> <head> <title> FRDM-K64F </title> </head> <body> <h1> Hello World! </h1> <p> LED </p><form action=""demo_form.asp""><SELECT NAME=""LED_COLOUR""> <OPTION VALUE=""""> <OPTION VALUE=""GREEN"">GREEN <OPTION VALUE=""RED"">RED <input type=""submit"" value=""Submit""> </SELECT></form></body> </html>";
-/*
-<!DOCTYPE html>
-<html>
- <head>
+ /*
+ <!DOCTYPE html>
+<html>
+ <head>
<title> FRDM-K64F </title>
- </head>
- <body>
-
- <h1> Hello World! </h1>
- <p> LED </p>
+ </head>
+ <body>
+
+ <h1>Temperature Sensor</h1>
+ <form action=""demo_form.asp"">
+ <select name=""OPTION"">
+ <option value=""TEMPERATURE"">
+ TEMPERATURE
+ <OPTION VALUE=""LAST"">
+ LAST 5 TEMPERATURES
+ </select>
+ <input type=""submit"" value=""Submit"">
+ </select>
+ </form>
+ </body>
+</html>
+ */
+ char http_cmd1[] = "<!DOCTYPE html> <html> <head> <title> FRDM-K64F </title></head> <body><h1>Temperature Sensor</h1><form action=""demo_form.asp""><select name=""OPTION""><option value=""TEMPERATURE"">TEMPERATURE<OPTION VALUE=""LAST"">LAST 5 TEMPERATURES<input type=""submit"" value=""Submit""></select></form>";
+ char http_cmd_current[]="<p>Current temperature in oC:</p>";
+ char http_cmd_last5temp[]="<p>Last (max 5) temperatures in oC:</p>";
+ char http_cmd_warning[]="<p><font color=""red"">WARNING! HIGH TEMPERATURE</font></p>";
+ char http_cmd2[]="</body></html>";
+ char http_cmd_newline_start[]="<p>";
+ char http_cmd_newline_end[]="</p>";
- <form action="demo_form.asp">
- <SELECT NAME="LED_COLOUR">
- <OPTION VALUE="">
- <OPTION VALUE="GREEN">
- GREEN
- <OPTION VALUE="RED">
- RED
- <input type="submit" value="Submit">
- </SELECT>
- </form>
-
- </body>
-</html>";
-*/
- client.send_all(http_cmd, sizeof(http_cmd)-1); // Send all the data to the remote host.
-
+ client.send_all(http_cmd1, sizeof(http_cmd1)-1); // Send all the data to the remote host.
+ if(option==1)
+ {
+ probe.convertTemperature(true, DS1820::all_devices);
+ pc.printf(" It's %3.1f oC\r\n",probe.temperature());
+ client.send_all(http_cmd_current, sizeof(http_cmd_current)-1);
+ client.send_all(value, sizeof(value)-1);
+ if(probe.temperature()>25)
+ {
+ client.send_all(http_cmd_warning, sizeof(http_cmd_warning)-1);
+ }
+ }
+ else if(option ==2)
+ {
+ client.send_all(http_cmd_last5temp, sizeof(http_cmd_last5temp)-1);
+ for(int i=0;i<=4;++i)
+ {
+ pc.printf("last %d value: %s",i,last5values[i]);
+ client.send_all(http_cmd_newline_start, sizeof(http_cmd_newline_start)-1);
+ client.send_all(last5values[i],sizeof(last5values[i])-1);
+ client.send_all(http_cmd_newline_end, sizeof(http_cmd_newline_end)-1);
+ }
+ }
+ client.send_all(http_cmd2, sizeof(http_cmd2)-1);
client.close(); // Close the socket.
pc.printf("\n\nClient closed\n\n\r");
}