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@1:99c58a942425, 2016-07-28 (annotated)

Committer:
ShaneKirkbride
Date:
Thu Jul 28 02:46:43 2016 +0000
Revision:
1:99c58a942425
Parent:
0:70a6082c1bf7
Child:
2:20ea1be14e4b
working on posting to vivaplanet

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 0:70a6082c1bf7 5 #include <STMClient.h>
ShaneKirkbride 0:70a6082c1bf7 6 #include <STMClientRest.h>
ShaneKirkbride 0:70a6082c1bf7 7
ShaneKirkbride 0:70a6082c1bf7 8 /*-------- Check if platform compatible ----------*/
ShaneKirkbride 0:70a6082c1bf7 9 #if DEVICE_SERIAL_ASYNCH
ShaneKirkbride 0:70a6082c1bf7 10 Serial debugSerial(SERIAL_TX, SERIAL_RX);
ShaneKirkbride 0:70a6082c1bf7 11 Serial espSerial(PA_0, PA_1);
ShaneKirkbride 0:70a6082c1bf7 12 #else
ShaneKirkbride 0:70a6082c1bf7 13 #warning "Platform not compatible with Low Power APIs for Serial"
ShaneKirkbride 0:70a6082c1bf7 14 Serial debugSerial(SERIAL_TX, SERIAL_RX);
ShaneKirkbride 0:70a6082c1bf7 15 Serial espSerial(PA_0, PA_1);
ShaneKirkbride 0:70a6082c1bf7 16 #endif
ShaneKirkbride 0:70a6082c1bf7 17
ShaneKirkbride 0:70a6082c1bf7 18
ShaneKirkbride 0:70a6082c1bf7 19 DigitalOut led1(LED1);
ShaneKirkbride 0:70a6082c1bf7 20
ShaneKirkbride 0:70a6082c1bf7 21 // Initialize a connection to esp-link using the normal hardware serial port both for
ShaneKirkbride 0:70a6082c1bf7 22 // SLIP and for debug messages.
ShaneKirkbride 0:70a6082c1bf7 23 STMClient esp(&espSerial, &debugSerial);
ShaneKirkbride 0:70a6082c1bf7 24
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
ShaneKirkbride 0:70a6082c1bf7 29 bool wifiConnected = false;
ShaneKirkbride 0:70a6082c1bf7 30
ShaneKirkbride 0:70a6082c1bf7 31 // Callback made from esp-link to notify of wifi status changes
ShaneKirkbride 0:70a6082c1bf7 32 // Here we print something out and set a global flag
ShaneKirkbride 0:70a6082c1bf7 33 void wifiCb(void *response) {
ShaneKirkbride 0:70a6082c1bf7 34 debugSerial.printf("waiting for wifi status...\n\r"); //debug
ShaneKirkbride 0:70a6082c1bf7 35 STMClientResponse *res = (STMClientResponse*)response;
ShaneKirkbride 0:70a6082c1bf7 36 if (res->argc() == 1) {
ShaneKirkbride 0:70a6082c1bf7 37 uint8_t status;
ShaneKirkbride 0:70a6082c1bf7 38 res->popArg(&status, 1);
ShaneKirkbride 0:70a6082c1bf7 39 debugSerial.printf("waiting for wifi status...\n\r");
ShaneKirkbride 0:70a6082c1bf7 40 if(status == STATION_GOT_IP) {
ShaneKirkbride 0:70a6082c1bf7 41 debugSerial.printf("WIFI CONNECTED");
ShaneKirkbride 0:70a6082c1bf7 42 wifiConnected = true;
ShaneKirkbride 0:70a6082c1bf7 43 } else {
ShaneKirkbride 0:70a6082c1bf7 44 debugSerial.printf("WIFI NOT READY: %i",status);
ShaneKirkbride 0:70a6082c1bf7 45 //Serial.printf(status);
ShaneKirkbride 0:70a6082c1bf7 46 wifiConnected = false;
ShaneKirkbride 0:70a6082c1bf7 47 }
ShaneKirkbride 0:70a6082c1bf7 48 }
ShaneKirkbride 0:70a6082c1bf7 49 }
ShaneKirkbride 0:70a6082c1bf7 50
ShaneKirkbride 1:99c58a942425 51 #define BUFLEN 512
ShaneKirkbride 1:99c58a942425 52 char response[BUFLEN];
ShaneKirkbride 0:70a6082c1bf7 53
ShaneKirkbride 1:99c58a942425 54 char *loop_get() {
ShaneKirkbride 0:70a6082c1bf7 55 //debugSerial.printf("begin main loop \n\r");
ShaneKirkbride 0:70a6082c1bf7 56 // process any callbacks coming from esp_link
ShaneKirkbride 0:70a6082c1bf7 57 esp.Process();
ShaneKirkbride 0:70a6082c1bf7 58 debugSerial.printf("Wifi Connected: %i \n\r",wifiConnected);
ShaneKirkbride 0:70a6082c1bf7 59 // if we're connected make an HTTP request
ShaneKirkbride 0:70a6082c1bf7 60 while(wifiConnected) {
ShaneKirkbride 0:70a6082c1bf7 61 // Request /utc/now from the previously set-up server
ShaneKirkbride 0:70a6082c1bf7 62 rest.get("/utc/now");
ShaneKirkbride 0:70a6082c1bf7 63
ShaneKirkbride 1:99c58a942425 64 //char response[BUFLEN];
ShaneKirkbride 0:70a6082c1bf7 65 memset(response, 0, BUFLEN);
ShaneKirkbride 0:70a6082c1bf7 66 uint16_t code = rest.waitResponse(response, BUFLEN);
ShaneKirkbride 0:70a6082c1bf7 67 if(code == HTTP_STATUS_OK){
ShaneKirkbride 0:70a6082c1bf7 68 debugSerial.printf("STM: GET successful: %s\n\r", response);
ShaneKirkbride 1:99c58a942425 69 wait(60);
ShaneKirkbride 1:99c58a942425 70 return response;
ShaneKirkbride 0:70a6082c1bf7 71 } else {
ShaneKirkbride 0:70a6082c1bf7 72 debugSerial.printf("STM: GET failed: %i\n\r",code);
ShaneKirkbride 1:99c58a942425 73 wait(60);
ShaneKirkbride 1:99c58a942425 74 return (char *)code;
ShaneKirkbride 1:99c58a942425 75 }
ShaneKirkbride 1:99c58a942425 76 }
ShaneKirkbride 1:99c58a942425 77 return "0";
ShaneKirkbride 1:99c58a942425 78 }
ShaneKirkbride 1:99c58a942425 79
ShaneKirkbride 1:99c58a942425 80 int loop_post() {
ShaneKirkbride 1:99c58a942425 81 //debugSerial.printf("begin main loop \n\r");
ShaneKirkbride 1:99c58a942425 82 // process any callbacks coming from esp_link
ShaneKirkbride 1:99c58a942425 83 esp.Process();
ShaneKirkbride 1:99c58a942425 84 debugSerial.printf("Wifi Connected: %i \n\r",wifiConnected);
ShaneKirkbride 1:99c58a942425 85 // if we're connected make an HTTP request
ShaneKirkbride 1:99c58a942425 86 while(wifiConnected) {
ShaneKirkbride 1:99c58a942425 87 // Post to cloud
ShaneKirkbride 1:99c58a942425 88 //rest.post("/post.php", "{sunleaf: test1}");
ShaneKirkbride 1:99c58a942425 89
ShaneKirkbride 1:99c58a942425 90 rest.post("/hummingbirdqueue/messages", "{sunleaf: test1}");
ShaneKirkbride 1:99c58a942425 91 char response[BUFLEN];
ShaneKirkbride 1:99c58a942425 92 memset(response, 0, BUFLEN);
ShaneKirkbride 1:99c58a942425 93 uint16_t code = rest.waitResponse(response, BUFLEN);
ShaneKirkbride 1:99c58a942425 94 if(code == HTTP_STATUS_OK){
ShaneKirkbride 1:99c58a942425 95 debugSerial.printf("STM: POST successful: %s\n\r", response);
ShaneKirkbride 1:99c58a942425 96 } else {
ShaneKirkbride 1:99c58a942425 97 debugSerial.printf("STM: POST failed: %i\n\r",code);
ShaneKirkbride 0:70a6082c1bf7 98 return code;
ShaneKirkbride 0:70a6082c1bf7 99 }
ShaneKirkbride 1:99c58a942425 100 wait(60);
ShaneKirkbride 0:70a6082c1bf7 101 }
ShaneKirkbride 1:99c58a942425 102 return 0;
ShaneKirkbride 0:70a6082c1bf7 103 }
ShaneKirkbride 0:70a6082c1bf7 104
ShaneKirkbride 1:99c58a942425 105
ShaneKirkbride 0:70a6082c1bf7 106 int main() {
ShaneKirkbride 0:70a6082c1bf7 107 led1=0;
ShaneKirkbride 0:70a6082c1bf7 108 debugSerial.baud(115200); // the baud rate here needs to match the esp-link config
ShaneKirkbride 0:70a6082c1bf7 109 espSerial.baud(115200);
ShaneKirkbride 0:70a6082c1bf7 110
ShaneKirkbride 0:70a6082c1bf7 111 debugSerial.printf("STM-Client starting!\n\r");
ShaneKirkbride 0:70a6082c1bf7 112 wait(0.5);
ShaneKirkbride 0:70a6082c1bf7 113
ShaneKirkbride 0:70a6082c1bf7 114 espSerial.printf("STM-Client starting!\n\r");
ShaneKirkbride 0:70a6082c1bf7 115 wait(0.5);
ShaneKirkbride 0:70a6082c1bf7 116
ShaneKirkbride 0:70a6082c1bf7 117 // Sync-up with esp-link, this is required at the start of any sketch and initializes the
ShaneKirkbride 0:70a6082c1bf7 118 // callbacks to the wifi status change callback. The callback gets called with the initial
ShaneKirkbride 0:70a6082c1bf7 119 // status right after Sync() below completes.
ShaneKirkbride 0:70a6082c1bf7 120 esp.wifiCb.attach(wifiCb); // wifi status change callback, optional (delete if not desired)
ShaneKirkbride 0:70a6082c1bf7 121 bool ok;
ShaneKirkbride 0:70a6082c1bf7 122 do {
ShaneKirkbride 0:70a6082c1bf7 123 //debugSerial.printf("main syncing..\n\r");
ShaneKirkbride 0:70a6082c1bf7 124 wait(0.5);
ShaneKirkbride 0:70a6082c1bf7 125 ok = esp.Sync(); // sync up with esp-link, blocks for up to 2 seconds
ShaneKirkbride 0:70a6082c1bf7 126 if (!ok){
ShaneKirkbride 0:70a6082c1bf7 127 debugSerial.printf("STM-Client sync failed!\n\r");
ShaneKirkbride 0:70a6082c1bf7 128 wait(0.5);
ShaneKirkbride 0:70a6082c1bf7 129 }
ShaneKirkbride 0:70a6082c1bf7 130 } while(!ok);
ShaneKirkbride 0:70a6082c1bf7 131
ShaneKirkbride 0:70a6082c1bf7 132 debugSerial.printf("STM-Client synced!\n\r");
ShaneKirkbride 0:70a6082c1bf7 133
ShaneKirkbride 0:70a6082c1bf7 134 // Get immediate wifi status info for demo purposes. This is not normally used because the
ShaneKirkbride 0:70a6082c1bf7 135 // wifi status callback registered above gets called immediately.
ShaneKirkbride 0:70a6082c1bf7 136 esp.GetWifiStatus();
ShaneKirkbride 0:70a6082c1bf7 137 STMClientPacket *packet;
ShaneKirkbride 0:70a6082c1bf7 138 if ((packet=esp.WaitReturn()) != NULL)
ShaneKirkbride 0:70a6082c1bf7 139 {
ShaneKirkbride 0:70a6082c1bf7 140 //debugSerial.printf("Wifi status: %i\n\r", packet->value);
ShaneKirkbride 0:70a6082c1bf7 141 //debugSerial.printf("waiting for wifi status...\n\r");
ShaneKirkbride 1:99c58a942425 142 if(packet->value >= 1) { ///ideally this would coincide with STATION_GOT_IP...
ShaneKirkbride 0:70a6082c1bf7 143 debugSerial.printf("WIFI CONNECTED\n\r");
ShaneKirkbride 0:70a6082c1bf7 144 wifiConnected = true;
ShaneKirkbride 0:70a6082c1bf7 145 } else {
ShaneKirkbride 0:70a6082c1bf7 146 debugSerial.printf("WIFI NOT READY: %i\n\r",packet->value);
ShaneKirkbride 0:70a6082c1bf7 147 //Serial.printf(status);
ShaneKirkbride 0:70a6082c1bf7 148 wifiConnected = false;
ShaneKirkbride 0:70a6082c1bf7 149 }
ShaneKirkbride 0:70a6082c1bf7 150 }
ShaneKirkbride 0:70a6082c1bf7 151
ShaneKirkbride 0:70a6082c1bf7 152
ShaneKirkbride 0:70a6082c1bf7 153 // Set up the REST client to talk to www.timeapi.org, this doesn't connect to that server,
ShaneKirkbride 0:70a6082c1bf7 154 // it just sets-up stuff on the esp-link side
ShaneKirkbride 1:99c58a942425 155 //int err = rest.begin("www.timeapi.org");
ShaneKirkbride 1:99c58a942425 156 //int err = rest.begin("posttestserver.com");
ShaneKirkbride 1:99c58a942425 157 const char* host = "vivaplanetbusservicedev.servicebus.windows.net";
ShaneKirkbride 1:99c58a942425 158 uint16_t port = 443;
ShaneKirkbride 1:99c58a942425 159
ShaneKirkbride 1:99c58a942425 160 int err = rest.begin();
ShaneKirkbride 0:70a6082c1bf7 161 if (err != 0) {
ShaneKirkbride 0:70a6082c1bf7 162 debugSerial.printf("REST begin failed: %i\n\r",err);
ShaneKirkbride 0:70a6082c1bf7 163 while(1) ;
ShaneKirkbride 0:70a6082c1bf7 164 }
ShaneKirkbride 0:70a6082c1bf7 165 debugSerial.printf("STM-REST ready\n\r");
ShaneKirkbride 1:99c58a942425 166 while(response != "0"){
ShaneKirkbride 1:99c58a942425 167 debugSerial.printf("status: %i\n\r",response);
ShaneKirkbride 1:99c58a942425 168 //loop_get();
ShaneKirkbride 1:99c58a942425 169 loop_post();
ShaneKirkbride 1:99c58a942425 170 wait(60);
ShaneKirkbride 0:70a6082c1bf7 171 }
ShaneKirkbride 0:70a6082c1bf7 172 }