Tom Amershek
Reads the value of A0 and sets LED1 if A0>2000mV; also dweets data to thingspace.io
Dependencies: NetworkSocketAPI X_NUCLEO_IDW01M1v2 mbed
Revision 0:45e9e04829d0, committed 2016-11-02
- Comitter:
- tamershek
- Date:
- Wed Nov 02 13:25:17 2016 +0000
- Commit message:
- Using v2 of IDW01M1 library
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/NetworkSocketAPI.lib Wed Nov 02 13:25:17 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/teams/NetworkSocketAPI/code/NetworkSocketAPI/#ea3a618e0818
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/X_NUCLEO_IDW01M1v2.lib Wed Nov 02 13:25:17 2016 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/teams/ST/code/X_NUCLEO_IDW01M1v2/#202385974a5a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Nov 02 13:25:17 2016 +0000
@@ -0,0 +1,147 @@
+// read analog0 and send to thingspace.io
+// toma 2016-11-01
+
+#include "mbed.h"
+#include "stdio.h"
+#include "SpwfInterface.h"
+#include "TCPSocket.h"
+#include <string>
+
+/*************************************
+//FRDM-K64: D9->UART1_TX, D7->UART1_RX
+Pin connections:
+ FRDM IDW01M1
+ ------ ---------
+ +3v3 <--> +3v3
+ GND <--> GND
+ D9 <--> D8
+ D7 <--> D2
+
+SpwfSAInterface spwf(D9, D7, false);
+*************************************/
+/*************************************
+//LPCXpresso11U68: D9->UART1_TX, D7->UART1_RX
+Pin connections:
+ LPC IDW01M1
+ ------ ---------
+ +3v3 <--> +3v3
+ GND <--> GND
+ A1 <--> D8
+ A2 <--> D2
+
+SpwfSAInterface spwf(A1, A2, false);
+*************************************/
+
+//NUCLEO: D8->UART1_TX (PA_9), D2->UART1_RX (PA_10)
+
+using namespace std;
+
+AnalogIn analog_input_A0(A0);
+Serial serial_port(USBTX, USBRX);
+DigitalOut myLed(LED1);
+SpwfSAInterface spwf(D8, D2, false);
+
+int errConnect;
+int errSend;
+
+int main()
+{
+ float panel_voltage;
+ DigitalOut led(LED1);
+ serial_port.baud(9600);
+
+ printf("\r\n\r\n*** system restart");
+ printf("\r\n\r\nanalog0 example using thingspace.io ...\n");
+
+ char *ssid = "";
+ char *seckey = "";
+ const char *mac;
+
+ printf("X-NUCLEO-IDW01M1v2 mbed application\r\n");
+
+ int spwfResponse;
+ spwfResponse = 0;
+
+ while(spwfResponse != 1) {
+ printf("connecting to access point ...\r\n");
+ spwfResponse = spwf.connect(ssid, seckey, NSAPI_SECURITY_WPA2);//WPA
+ printf("\nresponse: %i\n", spwfResponse);
+ if(spwfResponse != 1)
+ {
+ printf("error making connecting to access point\r\n");
+ }
+ else
+ {
+ printf("success connecting to access point\r\n");
+ const char *ip = spwf.get_ip_address();
+ mac = spwf.get_mac_address();
+ printf("\r\nip address = %s\r\n", (ip) ? ip : "error getting ip address");
+ printf("mac address = %s\r\n", (mac) ? mac : "error getting the mac address\n");
+ }
+ }
+
+ SocketAddress addrDweetServer(&spwf, "thingspace.io");
+ printf("\r\nthingspace.verizon.com resolved to: %s\r\n\r\n", addrDweetServer.get_ip_address());
+
+ TCPSocket socket(&spwf);
+
+ // connect socket
+ errConnect = socket.connect("thingspace.io", 80);
+ if(errConnect!=0) {
+ printf("\r\ncould not connect to socket; error = %d\r\n", errConnect);
+ } else {
+ printf("socket connected\r\n");
+ }
+
+ // get the last 2 bytes of the mac for the thing name
+ std::string macString = mac;
+ macString.erase(0,9);
+ macString.erase(2,1);
+ macString.erase(4,1);
+ const char *macBytes = macString.c_str();
+
+ while(1) {
+ panel_voltage = analog_input_A0.read();
+ printf("voltage: %f\r\n", panel_voltage);
+ // A0 is voltage tolerant to 3.3V, and analog read returns a percentage of the maximum
+ // need to convert the percentage back to a representative number
+ panel_voltage = panel_voltage * 3300; // change the value to be in the 0 to 3300 range
+ // printf("a0 reads %.3f mV\n", panel_voltage); // use 3 decimals of precision
+
+ // enable LED if voltage exceeds 2000 mV
+ if (panel_voltage > 2000) {
+ myLed = 1;
+ }
+ else {
+ myLed = 0;
+ }
+
+ // don't bother if never connected ...
+ if (spwfResponse == 1) {
+ // get length of jsonContent as string without streams
+ // adapted from http://codereview.stackexchange.com/questions/51270/socket-http-post-request
+
+ char dweetBuffer[72] = "";
+
+ // create GET HTTP header for dweeting
+ strcpy(dweetBuffer, "GET /dweet/for/nucleo-");
+ strcat(dweetBuffer, macBytes);
+ char valueRead[20];
+ sprintf(valueRead, "?voltage=%f", panel_voltage);
+ strcat(dweetBuffer, valueRead);
+ strcat(dweetBuffer, " HTTP/1.1\r\n\r\n");
+
+ serial_port.printf("\r\n%s", dweetBuffer);
+
+ char bufferRx[512] = "";
+ int countRx = 0;
+ serial_port.printf("sending and receiving data ...\r\n");
+ errSend = socket.send(dweetBuffer, strlen(dweetBuffer));
+ countRx = socket.recv(bufferRx, sizeof bufferRx);
+ printf("sent %d bytes\r\nand received %d bytes\r\n\r\n", errSend, countRx);
+ printf(bufferRx);
+ printf("\r\n\r\n*** 5-second pause ...\r\n");
+ }
+ wait(5.0); // 5000 ms delay before looping to next read
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Nov 02 13:25:17 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/9bcdf88f62b0 \ No newline at end of file