5 years, 2 months ago.

Need Help with thingspeak and includes!

Hello guys!

I need help with some issues with a example program i got from http://www.frank-zhao.com/thingspeak_mbed_tut1/. I need this for a school project that uses thingspeak.

When i import all the includes:

1. include "mbed.h"

1. include "EthernetNetIf.h"

1. include "NTPClient.h"

1. include "HTTPClient.h"

i get the issue " Error: Identifier "TCPSocketConnection" is undefined in "HTTPClient/HTTPClient.h", Line: 145, Col: 4 "

So then i thought that i would include Socket.h and EthernetInterface.h from mbed-os with no luck.

Any ideas to how i can fix this issue? Thanks in advance.

The code used :

1. include "mbed.h"
2. include "EthernetNetIf.h"
3. include "NTPClient.h"
4. include "HTTPClient.h"
5. include "Socket.h"
6. include "EthernetInterface.h" networking stuff

EthernetNetIf eth;

NTPClient ntp;

HTTPClient http;

char* ntpServerUrl = "0.ca.pool.ntp.org";

char* thingSpeakUrl = "http://api.thingspeak.com/update";

char* thingSpeakKey = "IS6YCLKIR423VO5H";

char urlBuffer[256];

char timeBuffer[64];

pin defs

DigitalOut rst(p30);

DigitalOut clk(p29);

DigitalInOut dq(p28);

void DS1620Send(long data, int numOfBits)

{

dq.output(); we are sending

for (int i = 0; i < numOfBits; i++)

{

clk = 0;

wait_us(0.05);

if (data & (1 << i)) bit is 1

{

dq = 1;

}

else bit is 0

{

dq = 0;

}

wait_us(0.5);

clk = 1;

wait_us(0.5);

}

dq.input(); go back to being input

clk = 1; leave high

}

float DS1620ReadTemp()

{

rst = 1;

DS1620Send(0xAA, 8); read temp command

dq.input();

int results = 0;

read in 9 bits

for (int i = 0; i < 9; i++)

{

clk = 0;

wait_us(0.5);

clk = 1;

wait_us(0.05);

if (dq.read() != 0) bit is 1

{

if (i < 8)

{

results |= 1 << i;

}

else

{

results *= -1; last bit is sign bit

}

}

wait_us(0.4);

}

clk = 1; leave high

rst = 0;

return (float)results / 2; div by 2 since last bit is 0.5

}

void DS1620Setup()

{

initial pin states

rst = 0;

clk = 1;

dq.input();

wait(0.1);

rst = 1;

DS1620Send(0x0A0C, 16); config for continuous mode with CPU mode

rst = 0;

wait(0.1);

rst = 1;

DS1620Send(0xEE, 8); start continuous conversions

rst = 0;

wait(0.1);

}

int main() {

printf("Start\r\n");

printf("Setting up Ethernet...\r\n");

EthernetErr ethErr = eth.setup();

if(ethErr)

{

printf("Error %d in ethernet setup.\r\n", ethErr);

return -1;

}

printf("Ethernet setup OK\r\n");

get time from ntp

time_t ctTime;

Host server(IpAddr(), 123, ntpServerUrl);

ntp.setTime(server);

start the sensor

DS1620Setup();

while(1)

{

update data here

ctTime = time(NULL);

float temperature = DS1620ReadTemp();

format time here

timeBuffer[0] = 0;

strftime(timeBuffer, 64, "%Y-%m-%d %H:%M:%S", localtime(&ctTime));

for debug

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);

printf("Request to %s\r\n", urlBuffer);

HTTPText resp;

HTTPResult res = http.get(urlBuffer, &resp);

if (res == HTTP_OK)

{

printf("Result :\"%s\"\r\n", resp.gets());

}

else

{

printf("Error %d\r\n", res);

}

wait(16); limited by ThingSpeak's API

}

return 0;

}

#include "mbed.h"