Pubnub demo for AT&T IoT Starter Kit. Functionally similar to the Flow demo.

Dependencies:   FXOS8700CQ MODSERIAL mbed

http://pubnub.github.io/slides/workshop/pictures/broadcast.png

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"}
Committer:
fkellermavnet
Date:
Fri Jul 22 18:01:07 2016 +0000
Revision:
34:1a4498e3580e
Parent:
32:1e052a3e73fe
Child:
36:d4782eabff43
Potential solution for missing characters at end of socket read payload.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JMF 2:0e2ef866af95 1 #include "mbed.h"
JMF 2:0e2ef866af95 2 #include <cctype>
JMF 2:0e2ef866af95 3 #include <string>
JMF 2:0e2ef866af95 4 #include "config_me.h"
JMF 2:0e2ef866af95 5 #include "SerialBuffered.h"
JMF 2:0e2ef866af95 6 #include "wnc_control.h"
JMF 2:0e2ef866af95 7
JMF 2:0e2ef866af95 8 extern Serial pc;
JMF 2:0e2ef866af95 9 extern Serial mdm;
JMF 2:0e2ef866af95 10 extern string MyServerIpAddress;
JMF 2:0e2ef866af95 11 extern string MySocketData;
JMF 2:0e2ef866af95 12
JMF 2:0e2ef866af95 13 int reinitialize_mdm(void);
JMF 2:0e2ef866af95 14
JMF 2:0e2ef866af95 15 enum WNC_ERR_e {
JMF 2:0e2ef866af95 16 WNC_OK =0,
JMF 2:0e2ef866af95 17 WNC_CMD_ERR = -1,
JMF 2:0e2ef866af95 18 WNC_NO_RESPONSE = -2
JMF 2:0e2ef866af95 19 };
JMF 2:0e2ef866af95 20
JMF 2:0e2ef866af95 21 // Contains result of last call to send_wnc_cmd(..)
JMF 2:0e2ef866af95 22 WNC_ERR_e WNC_MDM_ERR = WNC_OK;
JMF 2:0e2ef866af95 23
JMF 2:0e2ef866af95 24 // Contains the RAW WNC UART responses
JMF 2:0e2ef866af95 25 static string wncStr;
fkellermavnet 10:df54436ecd38 26 static int socketOpen = 0;
JMF 2:0e2ef866af95 27
JMF 2:0e2ef866af95 28 void software_init_mdm(void)
JMF 2:0e2ef866af95 29 {
JMF 2:0e2ef866af95 30 do
JMF 2:0e2ef866af95 31 {
JMF 2:0e2ef866af95 32 WNC_MDM_ERR = WNC_OK;
JMF 2:0e2ef866af95 33 at_init_wnc();
fkellermavnet 30:33be8e2992f3 34 if (WNC_MDM_ERR == WNC_NO_RESPONSE)
JMF 2:0e2ef866af95 35 reinitialize_mdm();
JMF 2:0e2ef866af95 36 } while (WNC_MDM_ERR != WNC_OK);
JMF 2:0e2ef866af95 37 }
JMF 2:0e2ef866af95 38
JMF 2:0e2ef866af95 39 void resolve_mdm(void)
JMF 2:0e2ef866af95 40 {
JMF 2:0e2ef866af95 41 do
JMF 2:0e2ef866af95 42 {
JMF 2:0e2ef866af95 43 WNC_MDM_ERR = WNC_OK;
JMF 2:0e2ef866af95 44 at_dnsresolve_wnc(MY_SERVER_URL, &MyServerIpAddress);
JMF 2:0e2ef866af95 45 if (WNC_MDM_ERR == WNC_NO_RESPONSE)
JMF 2:0e2ef866af95 46 {
JMF 2:0e2ef866af95 47 reinitialize_mdm();
JMF 2:0e2ef866af95 48 software_init_mdm();
JMF 2:0e2ef866af95 49 }
JMF 2:0e2ef866af95 50 else if (WNC_MDM_ERR == WNC_CMD_ERR)
JMF 2:0e2ef866af95 51 {
JMF 2:0e2ef866af95 52 pc.puts("Bad URL!!!!!!\r\n");
JMF 2:0e2ef866af95 53 MyServerIpAddress = "192.168.0.1";
JMF 2:0e2ef866af95 54 WNC_MDM_ERR = WNC_OK;
JMF 2:0e2ef866af95 55 }
JMF 2:0e2ef866af95 56 } while (WNC_MDM_ERR != WNC_OK);
JMF 2:0e2ef866af95 57
fkellermavnet 30:33be8e2992f3 58 pc.printf("My Server IP: %s\r\n", MyServerIpAddress.c_str());
JMF 2:0e2ef866af95 59 }
JMF 2:0e2ef866af95 60
JMF 2:0e2ef866af95 61 void sockopen_mdm(void)
JMF 2:0e2ef866af95 62 {
JMF 2:0e2ef866af95 63 do
JMF 2:0e2ef866af95 64 {
fkellermavnet 19:f89baed3bd6f 65 at_at_wnc();
fkellermavnet 19:f89baed3bd6f 66 at_at_wnc();
JMF 2:0e2ef866af95 67 WNC_MDM_ERR = WNC_OK;
JMF 2:0e2ef866af95 68 at_sockopen_wnc(MyServerIpAddress, MY_PORT_STR);
JMF 2:0e2ef866af95 69 if (WNC_MDM_ERR == WNC_NO_RESPONSE)
JMF 2:0e2ef866af95 70 {
JMF 2:0e2ef866af95 71 reinitialize_mdm();
JMF 2:0e2ef866af95 72 software_init_mdm();
JMF 2:0e2ef866af95 73 }
JMF 2:0e2ef866af95 74 else if (WNC_MDM_ERR == WNC_CMD_ERR)
JMF 2:0e2ef866af95 75 pc.puts("Socket open fail!!!!\r\n");
fkellermavnet 10:df54436ecd38 76 else
fkellermavnet 10:df54436ecd38 77 socketOpen = 1;
JMF 2:0e2ef866af95 78 } while (WNC_MDM_ERR != WNC_OK);
JMF 2:0e2ef866af95 79 }
JMF 2:0e2ef866af95 80
JMF 2:0e2ef866af95 81 void sockwrite_mdm(const char * s)
JMF 2:0e2ef866af95 82 {
fkellermavnet 10:df54436ecd38 83 if (socketOpen == 1)
fkellermavnet 10:df54436ecd38 84 {
JMF 2:0e2ef866af95 85 do
JMF 2:0e2ef866af95 86 {
JMF 2:0e2ef866af95 87 WNC_MDM_ERR = WNC_OK;
JMF 2:0e2ef866af95 88 at_sockwrite_wnc(s);
JMF 2:0e2ef866af95 89 if (WNC_MDM_ERR == WNC_NO_RESPONSE)
JMF 2:0e2ef866af95 90 {
JMF 2:0e2ef866af95 91 reinitialize_mdm();
JMF 2:0e2ef866af95 92 software_init_mdm();
JMF 2:0e2ef866af95 93 }
JMF 2:0e2ef866af95 94 else if (WNC_MDM_ERR == WNC_CMD_ERR)
JMF 2:0e2ef866af95 95 {
JMF 2:0e2ef866af95 96 pc.puts("Socket Write fail!!!\r\n");
JMF 2:0e2ef866af95 97 // Have seen when write fails modem gets stuck in bad state, try to recover
JMF 2:0e2ef866af95 98 reinitialize_mdm();
JMF 2:0e2ef866af95 99 software_init_mdm();
JMF 2:0e2ef866af95 100 }
JMF 2:0e2ef866af95 101 } while (WNC_MDM_ERR != WNC_OK);
fkellermavnet 10:df54436ecd38 102 }
fkellermavnet 10:df54436ecd38 103 else
fkellermavnet 10:df54436ecd38 104 puts("Socket is closed for write!\r\n");
JMF 2:0e2ef866af95 105 }
JMF 2:0e2ef866af95 106
fkellermavnet 30:33be8e2992f3 107 unsigned sockread_mdm(string * sockData, int len, int retries)
JMF 2:0e2ef866af95 108 {
fkellermavnet 30:33be8e2992f3 109 unsigned n = 0;
fkellermavnet 30:33be8e2992f3 110
fkellermavnet 30:33be8e2992f3 111 // Clean slate:
fkellermavnet 30:33be8e2992f3 112 sockData->erase();
fkellermavnet 30:33be8e2992f3 113
fkellermavnet 10:df54436ecd38 114 if (socketOpen == 1)
fkellermavnet 10:df54436ecd38 115 {
JMF 2:0e2ef866af95 116 do
JMF 2:0e2ef866af95 117 {
JMF 2:0e2ef866af95 118 WNC_MDM_ERR = WNC_OK;
fkellermavnet 30:33be8e2992f3 119 n = at_sockread_wnc(sockData, len, retries);
JMF 2:0e2ef866af95 120 if (WNC_MDM_ERR == WNC_NO_RESPONSE)
JMF 2:0e2ef866af95 121 {
fkellermavnet 30:33be8e2992f3 122 if (n == 0)
fkellermavnet 30:33be8e2992f3 123 {
fkellermavnet 30:33be8e2992f3 124 reinitialize_mdm();
fkellermavnet 30:33be8e2992f3 125 software_init_mdm();
fkellermavnet 30:33be8e2992f3 126 }
fkellermavnet 30:33be8e2992f3 127 else
fkellermavnet 30:33be8e2992f3 128 puts("Sock read partial data!!!\r\n");
JMF 2:0e2ef866af95 129 }
JMF 2:0e2ef866af95 130 else if (WNC_MDM_ERR == WNC_CMD_ERR)
JMF 2:0e2ef866af95 131 puts("Sock read fail!!!!\r\n");
fkellermavnet 30:33be8e2992f3 132 } while (WNC_MDM_ERR == WNC_NO_RESPONSE);
fkellermavnet 10:df54436ecd38 133 }
fkellermavnet 10:df54436ecd38 134 else
fkellermavnet 10:df54436ecd38 135 puts("Socket is closed for read\r\n");
fkellermavnet 30:33be8e2992f3 136
fkellermavnet 30:33be8e2992f3 137 return (n);
JMF 2:0e2ef866af95 138 }
JMF 2:0e2ef866af95 139
JMF 2:0e2ef866af95 140 void sockclose_mdm(void)
JMF 2:0e2ef866af95 141 {
JMF 2:0e2ef866af95 142 do
JMF 2:0e2ef866af95 143 {
JMF 2:0e2ef866af95 144 WNC_MDM_ERR = WNC_OK;
JMF 2:0e2ef866af95 145 at_sockclose_wnc();
fkellermavnet 10:df54436ecd38 146 // Assume close happened even if it went bad
fkellermavnet 10:df54436ecd38 147 // going bad will result in a re-init anyways and if close
fkellermavnet 10:df54436ecd38 148 // fails we're pretty much in bad state and not much can do
fkellermavnet 10:df54436ecd38 149 socketOpen = 0;
JMF 2:0e2ef866af95 150 if (WNC_MDM_ERR == WNC_NO_RESPONSE)
JMF 2:0e2ef866af95 151 {
JMF 2:0e2ef866af95 152 reinitialize_mdm();
JMF 2:0e2ef866af95 153 software_init_mdm();
JMF 2:0e2ef866af95 154 }
JMF 2:0e2ef866af95 155 else if (WNC_MDM_ERR == WNC_CMD_ERR)
JMF 2:0e2ef866af95 156 puts("Sock close fail!!!\r\n");
JMF 2:0e2ef866af95 157 } while (WNC_MDM_ERR != WNC_OK);
JMF 2:0e2ef866af95 158 }
JMF 2:0e2ef866af95 159
JMF 2:0e2ef866af95 160 /**
JMF 2:0e2ef866af95 161 * C++ version 0.4 char* style "itoa":
JMF 2:0e2ef866af95 162 * Written by Lukás Chmela
JMF 2:0e2ef866af95 163 * Released under GPLv3.
JMF 2:0e2ef866af95 164 */
JMF 2:0e2ef866af95 165
JMF 2:0e2ef866af95 166 char* itoa(int value, char* result, int base)
JMF 2:0e2ef866af95 167 {
JMF 2:0e2ef866af95 168 // check that the base if valid
JMF 2:0e2ef866af95 169 if ( base < 2 || base > 36 ) {
JMF 2:0e2ef866af95 170 *result = '\0';
JMF 2:0e2ef866af95 171 return result;
JMF 2:0e2ef866af95 172 }
JMF 2:0e2ef866af95 173
JMF 2:0e2ef866af95 174 char* ptr = result, *ptr1 = result, tmp_char;
JMF 2:0e2ef866af95 175 int tmp_value;
JMF 2:0e2ef866af95 176
JMF 2:0e2ef866af95 177 do {
JMF 2:0e2ef866af95 178 tmp_value = value;
JMF 2:0e2ef866af95 179 value /= base;
JMF 2:0e2ef866af95 180 *ptr++ = "zyxwvutsrqponmlkjihgfedcba9876543210123456789abcdefghijklmnopqrstuvwxyz"[35 + (tmp_value - value * base)];
JMF 2:0e2ef866af95 181 } while ( value );
JMF 2:0e2ef866af95 182
JMF 2:0e2ef866af95 183 // Apply negative sign
JMF 2:0e2ef866af95 184 if ( tmp_value < 0 )
JMF 2:0e2ef866af95 185 *ptr++ = '-';
JMF 2:0e2ef866af95 186 *ptr-- = '\0';
JMF 2:0e2ef866af95 187
JMF 2:0e2ef866af95 188 while ( ptr1 < ptr ) {
JMF 2:0e2ef866af95 189 tmp_char = *ptr;
JMF 2:0e2ef866af95 190 *ptr-- = *ptr1;
JMF 2:0e2ef866af95 191 *ptr1++ = tmp_char;
JMF 2:0e2ef866af95 192 }
JMF 2:0e2ef866af95 193
JMF 2:0e2ef866af95 194 return result;
JMF 2:0e2ef866af95 195 }
JMF 2:0e2ef866af95 196
JMF 2:0e2ef866af95 197 extern int mdm_sendAtCmdRsp(const char *cmd, const char **rsp_list, int timeout_ms, string * rsp, int * len);
JMF 2:0e2ef866af95 198
JMF 2:0e2ef866af95 199 // Sets a global with failure or success, assumes 1 thread all the time
JMF 2:0e2ef866af95 200 int send_wnc_cmd(const char * s, string ** r, int ms_timeout)
JMF 2:0e2ef866af95 201 {
JMF 2:0e2ef866af95 202 static const char * rsp_lst[] = { "OK", "ERROR", NULL };
JMF 2:0e2ef866af95 203 int len;
JMF 2:0e2ef866af95 204
JMF 2:0e2ef866af95 205 pc.printf("Send: %s\r\n",s);
JMF 2:0e2ef866af95 206 int res = mdm_sendAtCmdRsp(s, rsp_lst, ms_timeout, &wncStr, &len);
JMF 2:0e2ef866af95 207 *r = &wncStr; // Return a pointer to the static string
JMF 2:0e2ef866af95 208
JMF 2:0e2ef866af95 209 if (res >= 0)
JMF 2:0e2ef866af95 210 {
JMF 2:0e2ef866af95 211 pc.puts("[");
fkellermavnet 30:33be8e2992f3 212 pc.puts(wncStr.c_str());
JMF 2:0e2ef866af95 213 pc.puts("]\n\r");
JMF 2:0e2ef866af95 214 if (res > 0)
JMF 2:0e2ef866af95 215 {
JMF 2:0e2ef866af95 216 if (WNC_MDM_ERR != WNC_NO_RESPONSE)
JMF 2:0e2ef866af95 217 WNC_MDM_ERR = WNC_CMD_ERR;
JMF 2:0e2ef866af95 218 return -1;
JMF 2:0e2ef866af95 219 }
JMF 2:0e2ef866af95 220 else
JMF 2:0e2ef866af95 221 return 0;
JMF 2:0e2ef866af95 222 }
JMF 2:0e2ef866af95 223 else
JMF 2:0e2ef866af95 224 {
JMF 2:0e2ef866af95 225 WNC_MDM_ERR = WNC_NO_RESPONSE;
JMF 2:0e2ef866af95 226 pc.puts("No response from WNC!\n\r");
JMF 2:0e2ef866af95 227 return -2;
JMF 2:0e2ef866af95 228 }
JMF 2:0e2ef866af95 229 }
JMF 2:0e2ef866af95 230
fkellermavnet 19:f89baed3bd6f 231 void at_at_wnc(void)
fkellermavnet 19:f89baed3bd6f 232 {
fkellermavnet 19:f89baed3bd6f 233 string * pRespStr;
fkellermavnet 19:f89baed3bd6f 234 send_wnc_cmd("AT", &pRespStr, WNC_TIMEOUT_MS); // Heartbeat?
fkellermavnet 19:f89baed3bd6f 235 }
fkellermavnet 19:f89baed3bd6f 236
JMF 2:0e2ef866af95 237 void at_init_wnc(void)
JMF 2:0e2ef866af95 238 {
JMF 2:0e2ef866af95 239 string * pRespStr;
JMF 2:0e2ef866af95 240 send_wnc_cmd("AT", &pRespStr, WNC_TIMEOUT_MS); // Heartbeat?
JMF 2:0e2ef866af95 241 send_wnc_cmd("ATE1", &pRespStr, WNC_TIMEOUT_MS); // Echo ON
JMF 2:0e2ef866af95 242 string cmd_str("AT%PDNSET=1,");
JMF 2:0e2ef866af95 243 cmd_str += MY_APN_STR;
JMF 2:0e2ef866af95 244 cmd_str += ",IP";
fkellermavnet 30:33be8e2992f3 245 send_wnc_cmd(cmd_str.c_str(), &pRespStr, 2*WNC_TIMEOUT_MS); // Set APN, cmd seems to take a little longer sometimes
JMF 2:0e2ef866af95 246 send_wnc_cmd("AT@INTERNET=1", &pRespStr, WNC_TIMEOUT_MS); // Internet services enabled
JMF 2:0e2ef866af95 247 send_wnc_cmd("AT@SOCKDIAL=1", &pRespStr, WNC_TIMEOUT_MS);
JMF 2:0e2ef866af95 248 }
JMF 2:0e2ef866af95 249
JMF 2:0e2ef866af95 250 void at_sockopen_wnc(const string & ipStr, const char * port )
JMF 2:0e2ef866af95 251 {
JMF 2:0e2ef866af95 252 string * pRespStr;
JMF 2:0e2ef866af95 253 send_wnc_cmd("AT@SOCKCREAT=1", &pRespStr, WNC_TIMEOUT_MS);
JMF 2:0e2ef866af95 254 string cmd_str("AT@SOCKCONN=1,\"");
JMF 2:0e2ef866af95 255 cmd_str += ipStr;
JMF 2:0e2ef866af95 256 cmd_str += "\",";
JMF 2:0e2ef866af95 257 cmd_str += port;
fkellermavnet 30:33be8e2992f3 258 send_wnc_cmd(cmd_str.c_str(), &pRespStr, WNC_TIMEOUT_MS);
JMF 2:0e2ef866af95 259 }
JMF 2:0e2ef866af95 260
JMF 2:0e2ef866af95 261 void at_sockclose_wnc(void)
JMF 2:0e2ef866af95 262 {
JMF 2:0e2ef866af95 263 string * pRespStr;
JMF 2:0e2ef866af95 264 send_wnc_cmd("AT@SOCKCLOSE=1", &pRespStr, WNC_TIMEOUT_MS);
JMF 2:0e2ef866af95 265 }
JMF 2:0e2ef866af95 266
JMF 2:0e2ef866af95 267 int at_dnsresolve_wnc(const char * s, string * ipStr)
JMF 2:0e2ef866af95 268 {
JMF 2:0e2ef866af95 269 string * pRespStr;
JMF 2:0e2ef866af95 270 string str(s);
JMF 2:0e2ef866af95 271 str = "AT@DNSRESVDON=\"" + str;
JMF 2:0e2ef866af95 272 str += "\"\r\n";
fkellermavnet 30:33be8e2992f3 273 if (send_wnc_cmd(str.c_str(), &pRespStr, WNC_TIMEOUT_MS) == 0)
JMF 2:0e2ef866af95 274 {
JMF 2:0e2ef866af95 275 size_t pos_start = pRespStr->find(":\"") + 2;
JMF 2:0e2ef866af95 276 if (pos_start != string::npos)
JMF 2:0e2ef866af95 277 {
JMF 2:0e2ef866af95 278 size_t pos_end = pRespStr->rfind("\"") - 1;
JMF 2:0e2ef866af95 279 if (pos_end != string::npos)
JMF 2:0e2ef866af95 280 {
JMF 2:0e2ef866af95 281 if (pos_end > pos_start)
JMF 2:0e2ef866af95 282 {
JMF 2:0e2ef866af95 283 // Make a copy for use later (the source string is re-used)
JMF 2:0e2ef866af95 284 *ipStr = pRespStr->substr(pos_start, pos_end - pos_start + 1);
JMF 2:0e2ef866af95 285 return 1;
JMF 2:0e2ef866af95 286 }
JMF 2:0e2ef866af95 287 else
JMF 2:0e2ef866af95 288 pc.puts("URL Resolve fail, substr Err\r\n");
JMF 2:0e2ef866af95 289 }
JMF 2:0e2ef866af95 290 else
JMF 2:0e2ef866af95 291 pc.puts("URL Resolve fail, no 2nd quote\r\n");
JMF 2:0e2ef866af95 292 }
JMF 2:0e2ef866af95 293 else
JMF 2:0e2ef866af95 294 pc.puts("URL Resolve fail, no quotes\r\n");
JMF 2:0e2ef866af95 295 }
JMF 2:0e2ef866af95 296 else
JMF 2:0e2ef866af95 297 pc.puts("URL Resolve fail, WNC cmd fail\r\n");
JMF 2:0e2ef866af95 298
JMF 2:0e2ef866af95 299 return -1;
JMF 2:0e2ef866af95 300 }
JMF 2:0e2ef866af95 301
JMF 2:0e2ef866af95 302 void at_sockwrite_wnc(const char * s)
JMF 2:0e2ef866af95 303 {
JMF 2:0e2ef866af95 304 string * pRespStr;
JMF 2:0e2ef866af95 305 char num2str[6];
JMF 2:0e2ef866af95 306 size_t sLen = strlen(s);
JMF 2:0e2ef866af95 307 if (sLen <= 99999)
JMF 2:0e2ef866af95 308 {
JMF 2:0e2ef866af95 309 string cmd_str("AT@SOCKWRITE=1,");
JMF 2:0e2ef866af95 310 itoa(sLen, num2str, 10);
JMF 2:0e2ef866af95 311 cmd_str += num2str;
JMF 2:0e2ef866af95 312 cmd_str += ",\"";
JMF 2:0e2ef866af95 313 while(*s != '\0')
JMF 2:0e2ef866af95 314 {
JMF 2:0e2ef866af95 315 itoa((int)*s++, num2str, 16);
JMF 2:0e2ef866af95 316 // Always 2-digit ascii hex:
JMF 2:0e2ef866af95 317 if (strlen(num2str) == 1)
JMF 2:0e2ef866af95 318 {
JMF 2:0e2ef866af95 319 num2str[2] = '\0';
JMF 2:0e2ef866af95 320 num2str[1] = num2str[0];
JMF 2:0e2ef866af95 321 num2str[0] = '0';
JMF 2:0e2ef866af95 322 }
JMF 2:0e2ef866af95 323 cmd_str += num2str;
JMF 2:0e2ef866af95 324 }
JMF 2:0e2ef866af95 325 cmd_str += "\"";
fkellermavnet 30:33be8e2992f3 326 send_wnc_cmd(cmd_str.c_str(), &pRespStr, WNC_TIMEOUT_MS);
JMF 2:0e2ef866af95 327 }
JMF 2:0e2ef866af95 328 else
JMF 2:0e2ef866af95 329 pc.puts("sockwrite Err, string to long\r\n");
JMF 2:0e2ef866af95 330 }
JMF 2:0e2ef866af95 331
JMF 2:0e2ef866af95 332 unsigned at_sockread_wnc(string * pS, unsigned n, unsigned retries = 0)
JMF 2:0e2ef866af95 333 {
fkellermavnet 34:1a4498e3580e 334 unsigned i, numBytes = 0;
JMF 2:0e2ef866af95 335 string * pRespStr;
JMF 2:0e2ef866af95 336 string cmd_str("AT@SOCKREAD=1,");
fkellermavnet 30:33be8e2992f3 337
JMF 2:0e2ef866af95 338 if (n <= 1500)
JMF 2:0e2ef866af95 339 {
JMF 2:0e2ef866af95 340 char num2str[6];
fkellermavnet 22:41e6c417ace1 341
JMF 2:0e2ef866af95 342 itoa(n, num2str, 10);
JMF 2:0e2ef866af95 343 cmd_str += num2str;
JMF 2:0e2ef866af95 344 retries += 1;
JMF 2:0e2ef866af95 345 while (retries--)
JMF 2:0e2ef866af95 346 {
fkellermavnet 22:41e6c417ace1 347 // Assuming someone is sending then calling this to receive response, invoke
fkellermavnet 22:41e6c417ace1 348 // a pause to give the response some time to come back and then also
fkellermavnet 22:41e6c417ace1 349 // between each retry.
fkellermavnet 22:41e6c417ace1 350 wait_ms(10);
fkellermavnet 22:41e6c417ace1 351
fkellermavnet 30:33be8e2992f3 352 send_wnc_cmd(cmd_str.c_str(), &pRespStr, WNC_TIMEOUT_MS);
JMF 2:0e2ef866af95 353 size_t pos_start = pRespStr->find("\"") + 1;
JMF 2:0e2ef866af95 354 size_t pos_end = pRespStr->rfind("\"") - 1;
fkellermavnet 34:1a4498e3580e 355 i = (pos_end - pos_start + 1); // Num hex chars, 2 per byte
JMF 2:0e2ef866af95 356 if (i > 0)
JMF 2:0e2ef866af95 357 {
fkellermavnet 34:1a4498e3580e 358 retries = 1; // If any data found retry 1 more time to catch data that might be in another
fkellermavnet 34:1a4498e3580e 359 // WNC payload
JMF 2:0e2ef866af95 360 string byte;
JMF 2:0e2ef866af95 361 while (pos_start < pos_end)
JMF 2:0e2ef866af95 362 {
JMF 2:0e2ef866af95 363 byte = pRespStr->substr(pos_start, 2);
fkellermavnet 30:33be8e2992f3 364 *pS += (char)strtol(byte.c_str(), NULL, 16);
JMF 2:0e2ef866af95 365 pos_start += 2;
JMF 2:0e2ef866af95 366 }
fkellermavnet 34:1a4498e3580e 367 numBytes += i/2;
JMF 2:0e2ef866af95 368 }
JMF 2:0e2ef866af95 369 }
fkellermavnet 34:1a4498e3580e 370 return numBytes;
JMF 2:0e2ef866af95 371 }
JMF 2:0e2ef866af95 372 else
JMF 2:0e2ef866af95 373 pc.puts("sockread Err, to many to read\r\n");
JMF 2:0e2ef866af95 374
JMF 2:0e2ef866af95 375 return 0;
JMF 2:0e2ef866af95 376 }