Project:Nanode/Applications: Difference between revisions

Project:Nanode/Applications (view source)

812 bytes added , 23 August 2011

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+'''Analogue Inputs'''
+It's quite straight forward to add the analogue readings from sensors to the web page.
+We first have to read the ADC input, convert the resulting number to ASCII, and put that number into a string. Then we copy those strings into the buffer which makes up the tcp sending buffer.
+Here's the code to read analogue 0
+Remember to include the string library and the standard libray
+   #include <stdlib.h>
+   #include <string.h>
+  // Read the 6 analogue inputs in turn, convert the ADC result to ASCII and put into numstr
+  // Then copy from RAM, the numstr and put into the tcp send buffer to send to the web page
+   plen=es.ES_fill_tcp_data_p(buf,plen,PSTR("<br> A0: "));
+   itoa(analogRead(0),numstr,10); // convert integer to string
+   plen=es.ES_fill_tcp_data(buf,plen,numstr);