Joe Danlloh
for joel
Dependencies: EthernetInterface mbed-rtos mbed
Revision 0:4f326062cb33, committed 2017-08-03
- Comitter:
- idijoeteque
- Date:
- Thu Aug 03 10:17:41 2017 +0000
- Commit message:
- for joel
Changed in this revision
diff -r 000000000000 -r 4f326062cb33 EthernetInterface.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EthernetInterface.lib Thu Aug 03 10:17:41 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/EthernetInterface/#183490eb1b4a
diff -r 000000000000 -r 4f326062cb33 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Aug 03 10:17:41 2017 +0000
@@ -0,0 +1,85 @@
+/* ---------------------------------------
+ ---------------------------------------
+ Author: Joel Holland
+ Purpose: To have mbed send bytes of
+ data to a TCP server.
+ Note: Do not update ethernetinterface.h
+ new repositories are broken.
+ --------------------------------------
+ -------------------------------------- */
+
+#include "mbed.h"
+#include "EthernetInterface.h"
+
+EthernetInterface eth; //ethernet object
+TCPSocketConnection socket; //socket object
+Serial pc(USBTX,USBRX); //interface with TeraTerm
+DigitalOut P17(p17);
+AnalogIn LM35(p15);
+DigitalOut P16(p16);
+DigitalOut P18(p18);
+DigitalOut P19(p19);
+DigitalOut P20(p20);
+
+static const char* ip = "10.58.92.178";
+static const char* mask = "255.255.192.0";
+static const char* gateway = "10.58.64.1";
+
+// A data structure of the data to send
+// In this case it's fairly pointless, you may as well just use a uint16_t[] directly in place of this
+// But if you package what you want into a structure then you don't need to change the
+// transmission code if you change what is being sent, you just change the structure definition.
+typedef struct packetToSent_s {
+uint8_t data[1]; //specify data types within the struct, in this case an 80 element array of 8-bit unsigned int
+} packetToSend_t;
+
+packetToSend_t dataOut; //an instance of the packet to send
+
+int main()
+{
+ pc.printf("This program constantly polls the temperature sensor\n\n");
+ pc.printf("and sends the data packets out through both USB and TCP.\n\n");
+ eth.init(ip,mask,gateway); //static
+ wait(5);
+ eth.connect();
+ wait(5); //allow the mbed time to be dynamically assigned an IP and to connect before printing IP address
+ pc.printf("IP address is %s\n\n", eth.getIPAddress()); //function in ethernet library to return string containing IP
+ pc.printf("Mask is is %s\n\n", eth.getNetworkMask());
+ pc.printf("Gateway is %s\n\n", eth.getGateway());
+
+ socket.connect("10.58.74.19", 23); //ip address of PC, and port to be listened to by the HOST
+ wait(1);
+
+ while(1) {
+ float tempC,mv,avgtemp;
+ //specify data to be sent. Here we would desire the output from the multiplexer.
+ for(int i=0;i<1;i++) {
+ float avg=0;
+ for(int j=0;j<100;j++) {
+ mv = ((LM35.read()-0.02)*3300); //calibrate the analogue pin, multiply by reference voltage, convert to mv.
+ // pc.printf("voltage of sensor is %.2f",mv);
+ // wait(1);
+ tempC = mv/10; //LM35 device has a 1 degree change for every 10mv, therefore divide by this to get temp in C.
+ // pc.printf("temperature sample is %.2f C\t",tempC);
+ // wait(1);
+ avg=avg+tempC;
+ wait(0.01); //take 100 samples at a rate of 1ms
+ }
+ avgtemp=avg/100;
+ pc.printf("Temperature is %2.2f C\t\t\t", avgtemp);
+ uint8_t b;
+ b=avgtemp; //remove offset from analogue pin, then convert to unsigned integer 8 bit (2 bytes).
+ dataOut.data[i]=b; //populate array with analogue readings from pin 17. Remove offset.
+ }
+
+ //send the data packet by passing a pointer to the start of the data, and specifying its size.
+
+ socket.send_all((char*)&dataOut,sizeof(packetToSend_t));
+ //socket.send_all((char*)&dataOut2,sizeof(packetToSend_t)); here we could send packets corresponding to different data types
+ }
+//ideally should check return value from send_all to verify no errors have occured.
+
+
+}
+
+
diff -r 000000000000 -r 4f326062cb33 mbed-rtos.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Thu Aug 03 10:17:41 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#5713cbbdb706
diff -r 000000000000 -r 4f326062cb33 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Aug 03 10:17:41 2017 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/mbed_official/code/mbed/builds/a97add6d7e64 \ No newline at end of file