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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.
Diff: main.cpp
- Revision:
- 4:31bed73a0d08
- Parent:
- 3:8ed85d940c4c
- Child:
- 5:9f3015b18b24
--- a/main.cpp Fri Aug 05 16:04:04 2016 +0000 +++ b/main.cpp Tue Aug 09 22:42:31 2016 +0000 @@ -2,31 +2,33 @@ * Simple example to demo the STM-Client REST calls */ #include "mbed.h" + #include <STMClient.h> #include <STMClientRest.h> /*-------- Check if platform compatible ----------*/ #if DEVICE_SERIAL_ASYNCH -Serial debugSerial(SERIAL_TX, SERIAL_RX); -Serial espSerial(PA_0, PA_1); + Serial debugSerial(SERIAL_TX, SERIAL_RX); + Serial espSerial(PA_0, PA_1); #else #warning "Platform not compatible with Low Power APIs for Serial" Serial debugSerial(SERIAL_TX, SERIAL_RX); Serial espSerial(PA_0, PA_1); #endif - -DigitalOut led1(LED1); +DigitalOut led1(LED1); +DigitalOut led2(LED2); // Initialize a connection to esp-link using the normal hardware serial port both for // SLIP and for debug messages. STMClient esp(&espSerial, &debugSerial); - // Initialize a REST client on the connection to esp-link STMClientRest rest(&esp); - bool wifiConnected = false; +Ticker flipper; +Ticker post_data; +bool posted = false; // Callback made from esp-link to notify of wifi status changes // Here we print something out and set a global flag @@ -48,8 +50,8 @@ } } -#define BUFLEN 512 - char response[BUFLEN]; +#define BUFLEN 100 +char response[BUFLEN]; char *loop_get() { //debugSerial.printf("begin main loop \n\r"); @@ -78,34 +80,25 @@ } int loop_post() { - //debugSerial.printf("begin main loop \n\r"); + posted = false; + // process any callbacks coming from esp_link - int postCount = 0; esp.Process(); + debugSerial.printf("Wifi Connected: %i \n\r",wifiConnected); // if we're connected make an HTTP request - while(wifiConnected) { - postCount++; //don't post more than 3 times... - //***Uncomment to post to cloud***// - /* - const char* header = "{Host: vivaplanetbusservicedev.servicebus.windows.net Authorization: SharedAccessSignature sr=https%3a%2f%2fvivaplanetbusservicedev.servicebus.windows.net%2fhummingbirdqueue%2fmessages&sig=QIGJfPSsortI9tZpoJ6ZUzfMdtvEaaIHA2pnmKZxNVg%3d&se=1470210743&skn=DevicePolicy Content-Length: 440 Expect: 100-continue Connection: Keep-Alive}"; - rest.setHeader(header); - - const char* body = "{\"id\":\"17564321\",\"Address\":\"$28591\",\"PhotoUrl\":\"http://vivaplanetstoragedev.blob.core.windows.net:80/devicephotoscontainer/1457a68157e446c2bc4d0af58a0ccc63.jpg?st=2016-08-02T21%3A50%3A31Z&se=2016-08-02T22%3A05%3A31Z&sr=b&sp=w&sig=rf6ovBuFXKC937b3TMY3qVSf%2F3QOYXjqJBYcwj2MUv4%3D\",\"HasPhoto\":true,\"PhotoId\":\"1457a68157e446c2bc4d0af58a0ccc63.jpg\",\"DeviceSensors\":[{\"SensorType\":\"0\",\"Reading\":\"00:03:52.7656140\",\"Value\":\"921\"},null,null,null]}"; - rest.post("hummingbirdqueue/messages", body); //cloud post test - */ - //***Uncomment to post to test server***// - //const char* header = "{Host: posttestserver.com\n\rAuthorization: My_SSL_Authorization\n\rContent-Length: 27\n\rHTTP_EXPECT: 100-continue\n\rConnection: Keep-Alive}"; - //rest.setHeader(header); - + if(wifiConnected) { + const char* T = "25"; const char* L = "95"; const char* H = "25"; + /**make sure that the size of this array is consistent with the input string**/ const char* body = ""; - char output [50]; + char output [62]; sprintf(output, "/update?api_key=3FF5CTKAJIU2IH0M&field1=%s&field2=%s&field3=%s", T,L,H); //debugSerial.printf("output: %s \n\r", output); + //debugSerial.printf("size: %i \n\r", strlen(output)); rest.post(output, body); //basic post test @@ -114,21 +107,32 @@ uint16_t code = rest.waitResponse(response, BUFLEN); if(code == HTTP_STATUS_OK){ debugSerial.printf("STM: POST successful: %s\n\r", response); - }else if(postCount > 3){ - debugSerial.printf("STM: POST 3 times exiting...\n\r"); - return code; }else { debugSerial.printf("STM: POST failed: %i\n\r",code); - return code; + return 1; } - - wait(60); - } - return 0; + }else{ + debugSerial.printf("STM: wifi NOT connected: %i\n\r",wifiConnected); + return 1; + } + //debugSerial.printf("Exiting...\n\r"); + return 0; } +void flip() { + + int postVal = loop_post(); + if(!postVal) + { + posted = true; + }else{ + debugSerial.printf("error...%i\n\r",postVal); + posted = false; + } +} int main() { + //setup led1=0; debugSerial.baud(115200); // the baud rate here needs to match the esp-link config espSerial.baud(115200); @@ -172,8 +176,7 @@ //Serial.printf(status); wifiConnected = false; } - } - + } // Set up the REST client to talk to www.timeapi.org, this doesn't connect to that server, // it just sets-up stuff on the esp-link side @@ -190,10 +193,22 @@ while(1) ; } debugSerial.printf("STM-REST ready\n\r"); - while(response != "0"){ - debugSerial.printf("status: %x\n\r",response); - //loop_get(); - loop_post(); - wait(60); - } -} \ No newline at end of file + + //post_data.attach(&loop_post,15.0); //fire a post every minute + flipper.attach(&flip, 60.0); // the address of the function to be attached (flip) and the interval (2 seconds) + + while(true){ + + if(posted) + { + debugSerial.printf("sleeping..."); + posted = false; + sleep(); //then sleep + }else{ + led2 = !led2; + wait(0.5); // give everything a second to wake up + } + } + +} +