Srdjan Veljkovic
Pubnub demo for AT&T IoT Starter Kit. Functionally similar to the Flow demo.
Dependencies: FXOS8700CQ MODSERIAL mbed
Pubnub demo for AT&T IoT Starter Kit
This demo is functionally similar to the Flow demo, so you can find general information here: https://developer.mbed.org/users/JMF/code/Avnet_ATT_Cellular_IOT/.
The only difference is that we use Pubnub to publish the measurements and subscribe to receiving the instructions to set the LED.
Settings
Pubnub related settings are:
Pubnub settings in `config_me.h`
PUBNUB_SUBSCRIBE_KEY PUBNUB_PUBLISH_KEY PUBNUB_CHANNEL
All are documented in their respective comments.
Pubnub context class
Similar to Pubnub SDKs, we provide a Pubnub context class. It is defined in pubnub.h header file and implemented in pubnub.cpp.
It provides only the fundamental "publish" and "subscribe" methods. They are documented in the header file.
This class is reusable in other code (it is not specific to this demo), it has a very narrow interface to the AT&T IoT cellular modem code. For example of use, you can look at the main() (in main.c).
Sample of published data
Published message w/measurement data
{"serial":"vstarterkit001","temp":89.61,"humidity":35,"accelX":0.97,"accelY":0.013,"accelZ":-0.038}
Don't worry, nobody got burnt, the temperature is in degrees Fahrenheit. :)
Publish a message (from, say, the Pubnub console http://pubnub.com/console) of the form {"LED":<name-of-the-color>} on the channel that this demo listens to (default is hello_world) to turn the LED to that color on the Starter Kit:
Turn LED to red
{"LED":"Red"}
Turn LED to green
{"LED":"Green"}
Turn LED to blue
{"LED":"Blue"}
Revision 32:1e052a3e73fe, committed 2016-07-22
- Comitter:
- fkellermavnet
- Date:
- Fri Jul 22 16:22:17 2016 +0000
- Parent:
- 31:da32581b4507
- Child:
- 33:fa964b8b3b19
- Commit message:
- Removed in between character delays when talking to the WNC.
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| wnc_control.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Fri Jul 22 15:09:31 2016 +0000
+++ b/main.cpp Fri Jul 22 16:22:17 2016 +0000
@@ -85,7 +85,7 @@
break;
}
}
- wait_ms(1);
+// wait_ms(1);
}
buff[len] = (char)NULL;
@@ -93,13 +93,17 @@
}
int mdm_sendAtCmd(const char *cmd, const char **rsp_list, int timeout_ms) {
+ // Per WNC wait:
+ wait_ms(20);
+
if (cmd && strlen(cmd) > 0) {
if (mdm_dbgmask & MDM_DBG_AT_CMDS) {
printf(MAG "ATCMD: " DEF "--> " GRN "%s" DEF "\n", cmd);
}
- mdm.printf("%s\r\n", cmd);
+ mdm.puts(cmd);
+ mdm.puts("\r\n");
}
-
+
if (rsp_list) {
Timer timer;
char rsp[MAX_AT_RSP_LEN+1];
@@ -173,8 +177,6 @@
timer.start();
while (timer.read() < 60) {
const char * rsp_lst[] = { ok_str, error_str, NULL };
- // Per WNC wait:
- wait_ms(20);
int rc = mdm_sendAtCmd("AT", rsp_lst, 500);
if (rc == 0)
return true; //timer.read();
@@ -187,18 +189,24 @@
int mdm_sendAtCmdRsp(const char *cmd, const char **rsp_list, int timeout_ms, string * rsp, int * len) {
static char cmd_buf[3200]; // Need enough room for the WNC sockreads (over 3000 chars)
size_t n = strlen(cmd);
+
+ // Per WNC wait:
+ wait_ms(20);
+
if (cmd && n > 0) {
if (mdm_dbgmask & MDM_DBG_AT_CMDS) {
printf(MAG "ATCMD: " DEF "--> " GRN "%s" DEF "\n", cmd);
}
- while (n--) {
- mdm.putc(*cmd++);
- wait_ms(1);
- };
- mdm.putc('\r');
- wait_ms(1);
- mdm.putc('\n');
- wait_ms(1);
+ mdm.puts(cmd);
+ mdm.puts("\r\n");
+// while (n--) {
+// mdm.putc(*cmd++);
+// wait_ms(1);
+// };
+// mdm.putc('\r');
+// wait_ms(1);
+// mdm.putc('\n');
+// wait_ms(1);
}
if (rsp_list) {
--- a/wnc_control.cpp Fri Jul 22 15:09:31 2016 +0000
+++ b/wnc_control.cpp Fri Jul 22 16:22:17 2016 +0000
@@ -202,9 +202,6 @@
static const char * rsp_lst[] = { "OK", "ERROR", NULL };
int len;
- // Per WNC between every AT cmd:
- wait_ms(20);
-
pc.printf("Send: %s\r\n",s);
int res = mdm_sendAtCmdRsp(s, rsp_lst, ms_timeout, &wncStr, &len);
*r = &wncStr; // Return a pointer to the static string