Shane Kirkbride / Mbed 2 deprecated STM-Client

This is a SLIP interface for the STM32F446RE Nucleo Board. It is designed to work specifically with the esp-link software for the ESP8266. The program is an example of a rest command.

Dependencies:   mbed DHT Matrix

main.cpp@4:31bed73a0d08, 2016-08-09 (annotated)

Committer:
ShaneKirkbride
Date:
Tue Aug 09 22:42:31 2016 +0000
Revision:
4:31bed73a0d08
Parent:
3:8ed85d940c4c
Child:
5:9f3015b18b24
added interrupt driven interface;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ShaneKirkbride 0:70a6082c1bf7 1 /**
ShaneKirkbride 0:70a6082c1bf7 2 * Simple example to demo the STM-Client REST calls
ShaneKirkbride 0:70a6082c1bf7 3 */
ShaneKirkbride 0:70a6082c1bf7 4 #include "mbed.h"
ShaneKirkbride 4:31bed73a0d08 5
ShaneKirkbride 0:70a6082c1bf7 6 #include <STMClient.h>
ShaneKirkbride 0:70a6082c1bf7 7 #include <STMClientRest.h>
ShaneKirkbride 0:70a6082c1bf7 8
ShaneKirkbride 0:70a6082c1bf7 9 /*-------- Check if platform compatible ----------*/
ShaneKirkbride 0:70a6082c1bf7 10 #if DEVICE_SERIAL_ASYNCH
ShaneKirkbride 4:31bed73a0d08 11 Serial debugSerial(SERIAL_TX, SERIAL_RX);
ShaneKirkbride 4:31bed73a0d08 12 Serial espSerial(PA_0, PA_1);
ShaneKirkbride 0:70a6082c1bf7 13 #else
ShaneKirkbride 0:70a6082c1bf7 14 #warning "Platform not compatible with Low Power APIs for Serial"
ShaneKirkbride 0:70a6082c1bf7 15 Serial debugSerial(SERIAL_TX, SERIAL_RX);
ShaneKirkbride 0:70a6082c1bf7 16 Serial espSerial(PA_0, PA_1);
ShaneKirkbride 0:70a6082c1bf7 17 #endif
ShaneKirkbride 0:70a6082c1bf7 18
ShaneKirkbride 4:31bed73a0d08 19 DigitalOut led1(LED1);
ShaneKirkbride 4:31bed73a0d08 20 DigitalOut led2(LED2);
ShaneKirkbride 0:70a6082c1bf7 21
ShaneKirkbride 0:70a6082c1bf7 22 // Initialize a connection to esp-link using the normal hardware serial port both for
ShaneKirkbride 0:70a6082c1bf7 23 // SLIP and for debug messages.
ShaneKirkbride 0:70a6082c1bf7 24 STMClient esp(&espSerial, &debugSerial);
ShaneKirkbride 0:70a6082c1bf7 25
ShaneKirkbride 0:70a6082c1bf7 26 // Initialize a REST client on the connection to esp-link
ShaneKirkbride 0:70a6082c1bf7 27 STMClientRest rest(&esp);
ShaneKirkbride 0:70a6082c1bf7 28 bool wifiConnected = false;
ShaneKirkbride 4:31bed73a0d08 29 Ticker flipper;
ShaneKirkbride 4:31bed73a0d08 30 Ticker post_data;
ShaneKirkbride 4:31bed73a0d08 31 bool posted = false;
ShaneKirkbride 0:70a6082c1bf7 32
ShaneKirkbride 0:70a6082c1bf7 33 // Callback made from esp-link to notify of wifi status changes
ShaneKirkbride 0:70a6082c1bf7 34 // Here we print something out and set a global flag
ShaneKirkbride 0:70a6082c1bf7 35 void wifiCb(void *response) {
ShaneKirkbride 0:70a6082c1bf7 36 debugSerial.printf("waiting for wifi status...\n\r"); //debug
ShaneKirkbride 0:70a6082c1bf7 37 STMClientResponse *res = (STMClientResponse*)response;
ShaneKirkbride 0:70a6082c1bf7 38 if (res->argc() == 1) {
ShaneKirkbride 0:70a6082c1bf7 39 uint8_t status;
ShaneKirkbride 0:70a6082c1bf7 40 res->popArg(&status, 1);
ShaneKirkbride 0:70a6082c1bf7 41 debugSerial.printf("waiting for wifi status...\n\r");
ShaneKirkbride 0:70a6082c1bf7 42 if(status == STATION_GOT_IP) {
ShaneKirkbride 0:70a6082c1bf7 43 debugSerial.printf("WIFI CONNECTED");
ShaneKirkbride 0:70a6082c1bf7 44 wifiConnected = true;
ShaneKirkbride 0:70a6082c1bf7 45 } else {
ShaneKirkbride 0:70a6082c1bf7 46 debugSerial.printf("WIFI NOT READY: %i",status);
ShaneKirkbride 0:70a6082c1bf7 47 //Serial.printf(status);
ShaneKirkbride 0:70a6082c1bf7 48 wifiConnected = false;
ShaneKirkbride 0:70a6082c1bf7 49 }
ShaneKirkbride 0:70a6082c1bf7 50 }
ShaneKirkbride 0:70a6082c1bf7 51 }
ShaneKirkbride 0:70a6082c1bf7 52
ShaneKirkbride 4:31bed73a0d08 53 #define BUFLEN 100
ShaneKirkbride 4:31bed73a0d08 54 char response[BUFLEN];
ShaneKirkbride 0:70a6082c1bf7 55
ShaneKirkbride 1:99c58a942425 56 char *loop_get() {
ShaneKirkbride 0:70a6082c1bf7 57 //debugSerial.printf("begin main loop \n\r");
ShaneKirkbride 0:70a6082c1bf7 58 // process any callbacks coming from esp_link
ShaneKirkbride 0:70a6082c1bf7 59 esp.Process();
ShaneKirkbride 0:70a6082c1bf7 60 debugSerial.printf("Wifi Connected: %i \n\r",wifiConnected);
ShaneKirkbride 0:70a6082c1bf7 61 // if we're connected make an HTTP request
ShaneKirkbride 0:70a6082c1bf7 62 while(wifiConnected) {
ShaneKirkbride 0:70a6082c1bf7 63 // Request /utc/now from the previously set-up server
ShaneKirkbride 0:70a6082c1bf7 64 rest.get("/utc/now");
ShaneKirkbride 0:70a6082c1bf7 65
ShaneKirkbride 1:99c58a942425 66 //char response[BUFLEN];
ShaneKirkbride 0:70a6082c1bf7 67 memset(response, 0, BUFLEN);
ShaneKirkbride 0:70a6082c1bf7 68 uint16_t code = rest.waitResponse(response, BUFLEN);
ShaneKirkbride 0:70a6082c1bf7 69 if(code == HTTP_STATUS_OK){
ShaneKirkbride 0:70a6082c1bf7 70 debugSerial.printf("STM: GET successful: %s\n\r", response);
ShaneKirkbride 1:99c58a942425 71 wait(60);
ShaneKirkbride 1:99c58a942425 72 return response;
ShaneKirkbride 0:70a6082c1bf7 73 } else {
ShaneKirkbride 0:70a6082c1bf7 74 debugSerial.printf("STM: GET failed: %i\n\r",code);
ShaneKirkbride 1:99c58a942425 75 wait(60);
ShaneKirkbride 1:99c58a942425 76 return (char *)code;
ShaneKirkbride 1:99c58a942425 77 }
ShaneKirkbride 1:99c58a942425 78 }
ShaneKirkbride 1:99c58a942425 79 return "0";
ShaneKirkbride 1:99c58a942425 80 }
ShaneKirkbride 1:99c58a942425 81
ShaneKirkbride 1:99c58a942425 82 int loop_post() {
ShaneKirkbride 4:31bed73a0d08 83 posted = false;
ShaneKirkbride 4:31bed73a0d08 84
ShaneKirkbride 1:99c58a942425 85 // process any callbacks coming from esp_link
ShaneKirkbride 1:99c58a942425 86 esp.Process();
ShaneKirkbride 4:31bed73a0d08 87
ShaneKirkbride 1:99c58a942425 88 debugSerial.printf("Wifi Connected: %i \n\r",wifiConnected);
ShaneKirkbride 1:99c58a942425 89 // if we're connected make an HTTP request
ShaneKirkbride 4:31bed73a0d08 90 if(wifiConnected) {
ShaneKirkbride 4:31bed73a0d08 91
ShaneKirkbride 3:8ed85d940c4c 92 const char* T = "25";
ShaneKirkbride 3:8ed85d940c4c 93 const char* L = "95";
ShaneKirkbride 3:8ed85d940c4c 94 const char* H = "25";
ShaneKirkbride 2:20ea1be14e4b 95
ShaneKirkbride 4:31bed73a0d08 96 /**make sure that the size of this array is consistent with the input string**/
ShaneKirkbride 3:8ed85d940c4c 97 const char* body = "";
ShaneKirkbride 4:31bed73a0d08 98 char output [62];
ShaneKirkbride 3:8ed85d940c4c 99 sprintf(output, "/update?api_key=3FF5CTKAJIU2IH0M&field1=%s&field2=%s&field3=%s", T,L,H);
ShaneKirkbride 3:8ed85d940c4c 100 //debugSerial.printf("output: %s \n\r", output);
ShaneKirkbride 4:31bed73a0d08 101 //debugSerial.printf("size: %i \n\r", strlen(output));
ShaneKirkbride 2:20ea1be14e4b 102
ShaneKirkbride 3:8ed85d940c4c 103 rest.post(output, body); //basic post test
ShaneKirkbride 3:8ed85d940c4c 104
ShaneKirkbride 1:99c58a942425 105 char response[BUFLEN];
ShaneKirkbride 1:99c58a942425 106 memset(response, 0, BUFLEN);
ShaneKirkbride 1:99c58a942425 107 uint16_t code = rest.waitResponse(response, BUFLEN);
ShaneKirkbride 1:99c58a942425 108 if(code == HTTP_STATUS_OK){
ShaneKirkbride 1:99c58a942425 109 debugSerial.printf("STM: POST successful: %s\n\r", response);
ShaneKirkbride 2:20ea1be14e4b 110 }else {
ShaneKirkbride 1:99c58a942425 111 debugSerial.printf("STM: POST failed: %i\n\r",code);
ShaneKirkbride 4:31bed73a0d08 112 return 1;
ShaneKirkbride 0:70a6082c1bf7 113 }
ShaneKirkbride 4:31bed73a0d08 114 }else{
ShaneKirkbride 4:31bed73a0d08 115 debugSerial.printf("STM: wifi NOT connected: %i\n\r",wifiConnected);
ShaneKirkbride 4:31bed73a0d08 116 return 1;
ShaneKirkbride 4:31bed73a0d08 117 }
ShaneKirkbride 4:31bed73a0d08 118 //debugSerial.printf("Exiting...\n\r");
ShaneKirkbride 4:31bed73a0d08 119 return 0;
ShaneKirkbride 0:70a6082c1bf7 120 }
ShaneKirkbride 0:70a6082c1bf7 121
ShaneKirkbride 4:31bed73a0d08 122 void flip() {
ShaneKirkbride 4:31bed73a0d08 123
ShaneKirkbride 4:31bed73a0d08 124 int postVal = loop_post();
ShaneKirkbride 4:31bed73a0d08 125 if(!postVal)
ShaneKirkbride 4:31bed73a0d08 126 {
ShaneKirkbride 4:31bed73a0d08 127 posted = true;
ShaneKirkbride 4:31bed73a0d08 128 }else{
ShaneKirkbride 4:31bed73a0d08 129 debugSerial.printf("error...%i\n\r",postVal);
ShaneKirkbride 4:31bed73a0d08 130 posted = false;
ShaneKirkbride 4:31bed73a0d08 131 }
ShaneKirkbride 4:31bed73a0d08 132 }
ShaneKirkbride 1:99c58a942425 133
ShaneKirkbride 0:70a6082c1bf7 134 int main() {
ShaneKirkbride 4:31bed73a0d08 135 //setup
ShaneKirkbride 0:70a6082c1bf7 136 led1=0;
ShaneKirkbride 0:70a6082c1bf7 137 debugSerial.baud(115200); // the baud rate here needs to match the esp-link config
ShaneKirkbride 0:70a6082c1bf7 138 espSerial.baud(115200);
ShaneKirkbride 0:70a6082c1bf7 139
ShaneKirkbride 0:70a6082c1bf7 140 debugSerial.printf("STM-Client starting!\n\r");
ShaneKirkbride 0:70a6082c1bf7 141 wait(0.5);
ShaneKirkbride 0:70a6082c1bf7 142
ShaneKirkbride 0:70a6082c1bf7 143 espSerial.printf("STM-Client starting!\n\r");
ShaneKirkbride 0:70a6082c1bf7 144 wait(0.5);
ShaneKirkbride 0:70a6082c1bf7 145
ShaneKirkbride 0:70a6082c1bf7 146 // Sync-up with esp-link, this is required at the start of any sketch and initializes the
ShaneKirkbride 0:70a6082c1bf7 147 // callbacks to the wifi status change callback. The callback gets called with the initial
ShaneKirkbride 0:70a6082c1bf7 148 // status right after Sync() below completes.
ShaneKirkbride 0:70a6082c1bf7 149 esp.wifiCb.attach(wifiCb); // wifi status change callback, optional (delete if not desired)
ShaneKirkbride 0:70a6082c1bf7 150 bool ok;
ShaneKirkbride 0:70a6082c1bf7 151 do {
ShaneKirkbride 0:70a6082c1bf7 152 //debugSerial.printf("main syncing..\n\r");
ShaneKirkbride 0:70a6082c1bf7 153 wait(0.5);
ShaneKirkbride 0:70a6082c1bf7 154 ok = esp.Sync(); // sync up with esp-link, blocks for up to 2 seconds
ShaneKirkbride 0:70a6082c1bf7 155 if (!ok){
ShaneKirkbride 0:70a6082c1bf7 156 debugSerial.printf("STM-Client sync failed!\n\r");
ShaneKirkbride 0:70a6082c1bf7 157 wait(0.5);
ShaneKirkbride 0:70a6082c1bf7 158 }
ShaneKirkbride 0:70a6082c1bf7 159 } while(!ok);
ShaneKirkbride 0:70a6082c1bf7 160
ShaneKirkbride 0:70a6082c1bf7 161 debugSerial.printf("STM-Client synced!\n\r");
ShaneKirkbride 0:70a6082c1bf7 162
ShaneKirkbride 0:70a6082c1bf7 163 // Get immediate wifi status info for demo purposes. This is not normally used because the
ShaneKirkbride 0:70a6082c1bf7 164 // wifi status callback registered above gets called immediately.
ShaneKirkbride 0:70a6082c1bf7 165 esp.GetWifiStatus();
ShaneKirkbride 0:70a6082c1bf7 166 STMClientPacket *packet;
ShaneKirkbride 0:70a6082c1bf7 167 if ((packet=esp.WaitReturn()) != NULL)
ShaneKirkbride 0:70a6082c1bf7 168 {
ShaneKirkbride 0:70a6082c1bf7 169 //debugSerial.printf("Wifi status: %i\n\r", packet->value);
ShaneKirkbride 0:70a6082c1bf7 170 //debugSerial.printf("waiting for wifi status...\n\r");
ShaneKirkbride 1:99c58a942425 171 if(packet->value >= 1) { ///ideally this would coincide with STATION_GOT_IP...
ShaneKirkbride 0:70a6082c1bf7 172 debugSerial.printf("WIFI CONNECTED\n\r");
ShaneKirkbride 0:70a6082c1bf7 173 wifiConnected = true;
ShaneKirkbride 0:70a6082c1bf7 174 } else {
ShaneKirkbride 0:70a6082c1bf7 175 debugSerial.printf("WIFI NOT READY: %i\n\r",packet->value);
ShaneKirkbride 0:70a6082c1bf7 176 //Serial.printf(status);
ShaneKirkbride 0:70a6082c1bf7 177 wifiConnected = false;
ShaneKirkbride 0:70a6082c1bf7 178 }
ShaneKirkbride 4:31bed73a0d08 179 }
ShaneKirkbride 0:70a6082c1bf7 180
ShaneKirkbride 0:70a6082c1bf7 181 // Set up the REST client to talk to www.timeapi.org, this doesn't connect to that server,
ShaneKirkbride 0:70a6082c1bf7 182 // it just sets-up stuff on the esp-link side
ShaneKirkbride 2:20ea1be14e4b 183 //int err = rest.begin("www.timeapi.org"); //for basic example of get
ShaneKirkbride 3:8ed85d940c4c 184 const char* host = "api.thingspeak.com";
ShaneKirkbride 3:8ed85d940c4c 185 //const char* host = "posttestserver.com";
ShaneKirkbride 2:20ea1be14e4b 186 //const char* host = "vivaplanetbusservicedev.servicebus.windows.net";
ShaneKirkbride 3:8ed85d940c4c 187 uint16_t port = 80;
ShaneKirkbride 3:8ed85d940c4c 188 bool security = true;
ShaneKirkbride 3:8ed85d940c4c 189 int err = rest.begin(host,port,security);
ShaneKirkbride 2:20ea1be14e4b 190
ShaneKirkbride 0:70a6082c1bf7 191 if (err != 0) {
ShaneKirkbride 0:70a6082c1bf7 192 debugSerial.printf("REST begin failed: %i\n\r",err);
ShaneKirkbride 0:70a6082c1bf7 193 while(1) ;
ShaneKirkbride 0:70a6082c1bf7 194 }
ShaneKirkbride 0:70a6082c1bf7 195 debugSerial.printf("STM-REST ready\n\r");
ShaneKirkbride 4:31bed73a0d08 196
ShaneKirkbride 4:31bed73a0d08 197 //post_data.attach(&loop_post,15.0); //fire a post every minute
ShaneKirkbride 4:31bed73a0d08 198 flipper.attach(&flip, 60.0); // the address of the function to be attached (flip) and the interval (2 seconds)
ShaneKirkbride 4:31bed73a0d08 199
ShaneKirkbride 4:31bed73a0d08 200 while(true){
ShaneKirkbride 4:31bed73a0d08 201
ShaneKirkbride 4:31bed73a0d08 202 if(posted)
ShaneKirkbride 4:31bed73a0d08 203 {
ShaneKirkbride 4:31bed73a0d08 204 debugSerial.printf("sleeping...");
ShaneKirkbride 4:31bed73a0d08 205 posted = false;
ShaneKirkbride 4:31bed73a0d08 206 sleep(); //then sleep
ShaneKirkbride 4:31bed73a0d08 207 }else{
ShaneKirkbride 4:31bed73a0d08 208 led2 = !led2;
ShaneKirkbride 4:31bed73a0d08 209 wait(0.5); // give everything a second to wake up
ShaneKirkbride 4:31bed73a0d08 210 }
ShaneKirkbride 4:31bed73a0d08 211 }
ShaneKirkbride 4:31bed73a0d08 212
ShaneKirkbride 4:31bed73a0d08 213 }
ShaneKirkbride 4:31bed73a0d08 214