Cellular building monitoring
Full code to read temperature and post to Think Speak (not working)
Dependencies: GPRSInterface HTTPClient NTPClient USBDevice mbed
Revision 0:3f6e369de720, committed 2015-02-25
- Comitter:
- mbotkinl
- Date:
- Wed Feb 25 20:34:13 2015 +0000
- Commit message:
- Think Speak Test;
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/GPRSInterface.lib Wed Feb 25 20:34:13 2015 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/teams/Seeed/code/GPRSInterface/#180feb3ebe62
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/HTTPClient.lib Wed Feb 25 20:34:13 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mamezu/code/HTTPClient/#62fac7f06c8d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/NTPClient.lib Wed Feb 25 20:34:13 2015 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/donatien/code/NTPClient/#881559865a93
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ThinkSpeak.cpp Wed Feb 25 20:34:13 2015 +0000
@@ -0,0 +1,123 @@
+#include "mbed.h"
+#include "GPRSInterface.h"
+#include "USBSerial.h"
+#include "NTPClient.h"
+#include "HTTPClient.h"
+
+
+#define PIN_PWR P1_2 //power up gprs module
+#define PIN_PWR_KEY P1_7
+#define PIN_TX P1_27
+#define PIN_RX P1_26
+
+#define TS_FEED_ID 25152
+#define TS_API "GH5ZL0IHZV81017V"
+
+NTPClient ntp;
+HTTPClient http;
+
+char* ntpServerUrl = "0.ca.pool.ntp.org";
+
+char* thingSpeakUrl = "http://api.thingspeak.com/update";
+char* thingSpeakKey = "GH5ZL0IHZV81017V";
+
+
+char urlBuffer[256];
+char timeBuffer[64];
+
+GPRSInterface gprs(PIN_TX,PIN_RX,115200,"live.vodafone.com",NULL,NULL);
+DigitalOut power(PIN_PWR);
+DigitalOut powerKey(PIN_PWR_KEY);
+AnalogIn sensor(P0_12);
+
+USBSerial pc;
+
+
+void gprsPowerUp(void)
+{
+ power = 1;
+ wait(2);
+ power = 0;
+ wait(2);
+
+ powerKey = 0;
+ wait(1);
+ powerKey = 1;
+ wait(2);
+ powerKey = 0;
+ wait(3);
+}
+
+void settingsChanged(int baud, int bits, int parity, int stop)
+{
+ const Serial::Parity parityTable[] = {Serial::None, Serial::Odd, Serial::Even, Serial::Forced0, Serial::Forced1};
+
+ if (stop != 2) {
+ stop = 1; // stop bit(s) = 1 or 1.5
+ }
+
+ gprs.serialModem.baud(baud);
+ gprs.serialModem.format(bits, parityTable[parity], stop);
+}
+int main() {
+
+ pc.printf("starting...\r\n");
+ pc.attach(settingsChanged);
+
+ gprsPowerUp();
+
+ gprs.init(); //Use DHCP
+ // attempt DHCP
+ if(gprs.connect()<0) {
+ wait(2);
+ pc.printf("gprs connect error\r\n");
+ }
+ pc.printf("GPRS Connect = %s \r\n", gprs.connect());
+ pc.printf("IP Address is %s\r\n", gprs.getIPAddress());
+
+
+
+
+ // get time from ntp
+ time_t ctTime;
+ Host server(IpAddr(), 123, ntpServerUrl);
+ ntp.setTime(server);
+
+ while(1)
+ {
+ // update data here
+ ctTime = time(NULL);
+ pc.printf("Reading....");
+ float temperature = 100*sensor.read();
+
+ // format time here
+ timeBuffer[0] = 0;
+ strftime(timeBuffer, 64, "%Y-%m-%d %H:%M:%S", localtime(&ctTime));
+
+ // for debug
+ pc.printf("Time: %s, Temperature: %f\r\n", timeBuffer, temperature);
+
+ // format url here
+ urlBuffer[0] = 0;
+ sprintf(urlBuffer, "%s?key=%s&field1=%s&field2=%f", thingSpeakUrl, thingSpeakKey, timeBuffer, temperature);
+ pc.printf("Request to %s\r\n", urlBuffer);
+
+ HTTPText resp;
+ HTTPResult res = http.get(urlBuffer, &resp);
+ if (res == HTTP_OK)
+ {
+ pc.printf("Result :\"%s\"\r\n", resp.gets());
+ }
+ else
+ {
+ pc.printf("Error %d\r\n", res);
+ }
+
+ wait(16); // limited by ThingSpeak's API
+
+ }
+
+
+
+}
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBDevice.lib Wed Feb 25 20:34:13 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/USBDevice/#0ca6eeb54b97
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Feb 25 20:34:13 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/e188a91d3eaa \ No newline at end of file