Peng Jing Xuan
WIFU
Dependencies: DISCO_L475VG_IOT01A_wifi
Diff: main.cpp
- Revision:
- 2:9a54ede37c7e
- Parent:
- 0:c301ccc87f5b
- Child:
- 4:5faac3e1e099
--- a/main.cpp Thu Aug 17 15:38:01 2017 +0000
+++ b/main.cpp Thu Aug 17 16:35:36 2017 +0000
@@ -5,9 +5,8 @@
This example
- connects to a wifi network (SSID & PWD to set in mbed_app.json)
- - displays the IP address and creates a web page
- - then connect on its IP address on the same wifi network with another device
- - Now able to change the led status and read the temperature
+ - Connects to a TCP server (set the address in RemoteIP)
+ - Sends "Hello" to the server when data is received
This example uses SPI3 ( PE_0 PC_10 PC_12 PC_11), wifi_wakeup pin (PB_13),
wifi_dataready pin (PE_1), wifi reset pin (PE_8)
@@ -16,71 +15,44 @@
/* Private defines -----------------------------------------------------------*/
#define WIFI_WRITE_TIMEOUT 10000
#define WIFI_READ_TIMEOUT 10000
-#define PORT 80
+#define CONNECTION_TRIAL_MAX 10
/* Private typedef------------------------------------------------------------*/
-typedef enum
-{
- WS_IDLE = 0,
- WS_CONNECTED,
- WS_DISCONNECTED,
- WS_ERROR,
-} WebServerState_t;
-
/* Private macro -------------------------------------------------------------*/
-static int wifi_sample_run(void);
-static void WebServerProcess(void);
-static WIFI_Status_t SendWebPage(uint8_t ledIsOn, float temperature);
/* Private variables ---------------------------------------------------------*/
Serial pc(SERIAL_TX, SERIAL_RX);
-static uint8_t http[1024];
-static uint8_t resp[1024];
-uint16_t respLen;
-uint8_t IP_Addr[4];
+uint8_t RemoteIP[] = {MBED_CONF_APP_SERVER_IP_1,MBED_CONF_APP_SERVER_IP_2,MBED_CONF_APP_SERVER_IP_3, MBED_CONF_APP_SERVER_IP_4};
+uint8_t RxData [500];
+char* modulename;
+uint8_t TxData[] = "STM32 : Hello!\n";
+uint16_t RxLen;
uint8_t MAC_Addr[6];
-int32_t Socket = -1;
-static WebServerState_t State = WS_ERROR;
-char ModuleName[32];
-DigitalOut led(LED2);
-AnalogIn adc_temp(ADC_TEMP);
+uint8_t IP_Addr[4];
int main()
{
- int ret = 0;
- led = 0;
+ int32_t Socket = -1;
+ uint16_t Datalen;
+ uint16_t Trials = CONNECTION_TRIAL_MAX;
+
pc.baud(115200);
+
printf("\n");
printf("************************************************************\n");
printf("*** STM32 IoT Discovery kit for STM32L475 MCU ***\n");
- printf("*** WIFI Web Server demonstration ***\n\n");
- printf("*** Copy the IP address on another device connected ***\n");
- printf("*** to the wifi network ***\n");
- printf("*** Read the temperature and update the LED status ***\n");
+ printf("*** WIFI Module in TCP Client mode demonstration ***\n\n");
+ printf("*** TCP Client Instructions :\n");
+ printf("*** 1- Make sure your Phone is connected to the same network that\n");
+ printf("*** you configured using the Configuration Access Point.\n");
+ printf("*** 2- Create a server by using the android application TCP Server\n");
+ printf("*** with port(8002).\n");
+ printf("*** 3- Get the Network Name or IP Address of your phone from the step 2.\n\n");
printf("************************************************************\n");
-
- /* Working application */
- ret = wifi_sample_run();
-
- if (ret != 0) {
- return -1;
- }
-
- while(1) {
- WebServerProcess ();
- }
-
-}
-
-
-int wifi_sample_run(void)
-{
-
- /*Initialize and use WIFI module */
+ /*Initialize WIFI module */
if(WIFI_Init() == WIFI_STATUS_OK) {
- printf("ES-WIFI Initialized.\n");
-
- if(WIFI_GetMAC_Address(MAC_Addr) == WIFI_STATUS_OK) {
+ printf("> WIFI Module Initialized.\n");
+ if(WIFI_GetMAC_Address(MAC_Addr) == WIFI_STATUS_OK) {
printf("> es-wifi module MAC Address : %X:%X:%X:%X:%X:%X\n",
MAC_Addr[0],
MAC_Addr[1],
@@ -94,7 +66,6 @@
if( WIFI_Connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, WIFI_ECN_WPA2_PSK) == WIFI_STATUS_OK) {
printf("> es-wifi module connected \n");
-
if(WIFI_GetIP_Address(IP_Addr) == WIFI_STATUS_OK) {
printf("> es-wifi module got IP Address : %d.%d.%d.%d\n",
IP_Addr[0],
@@ -102,148 +73,42 @@
IP_Addr[2],
IP_Addr[3]);
- printf(">Start HTTP Server... \n");
- printf(">Wait for connection... \n");
- State = WS_IDLE;
- } else {
+ printf("> Trying to connect to Server: %d.%d.%d.%d:8002 ...\n",
+ RemoteIP[0],
+ RemoteIP[1],
+ RemoteIP[2],
+ RemoteIP[3]);
+
+ while (Trials--){
+ if( WIFI_OpenClientConnection(0, WIFI_TCP_PROTOCOL, "TCP_CLIENT", RemoteIP, 8002, 0) == WIFI_STATUS_OK){
+ printf("> TCP Connection opened successfully.\n");
+ Socket = 0;
+ }
+ }
+ if(!Trials) {
+ printf("> ERROR : Cannot open Connection\n");
+ }
+ } else {
printf("> ERROR : es-wifi module CANNOT get IP address\n");
- return -1;
}
} else {
printf("> ERROR : es-wifi module NOT connected\n");
- return -1;
}
} else {
printf("> ERROR : WIFI Module cannot be initialized.\n");
- return -1;
}
- return 0;
-}
-
-/**
- * @brief Send HTML page
- * @param None
- * @retval None
- */
-static void WebServerProcess(void)
-{
- uint8_t LedState = 0;
- float temp;
- switch(State)
- {
- case WS_IDLE:
- Socket = 0;
- WIFI_StartServer(Socket, WIFI_TCP_PROTOCOL, "", PORT);
-
- if(Socket != -1)
- {
- printf("> HTTP Server Started \n");
- State = WS_CONNECTED;
- }
- else
- {
- printf("> ERROR : Connection cannot be established.\n");
- State = WS_ERROR;
- }
- break;
-
- case WS_CONNECTED:
-
- WIFI_ReceiveData(Socket, resp, 1200, &respLen, WIFI_READ_TIMEOUT);
-
- if( respLen > 0)
- {
- if(strstr((char *)resp, "GET")) /* GET: put web page */
- {
- temp = (adc_temp.read()*100);
- if(SendWebPage(LedState, temp) != WIFI_STATUS_OK)
- {
- printf("> ERROR : Cannot send web page\n");
- State = WS_ERROR;
- }
- }
- else if(strstr((char *)resp, "POST"))/* POST: received info */
- {
- if(strstr((char *)resp, "radio"))
- {
- if(strstr((char *)resp, "radio=0"))
- {
- LedState = 0;
- led = 0;
+
+ while(1){
+ if(Socket != -1) {
+ if(WIFI_ReceiveData(Socket, RxData, sizeof(RxData), &Datalen, WIFI_READ_TIMEOUT) == WIFI_STATUS_OK){
+ if(Datalen > 0) {
+ if(WIFI_SendData(Socket, TxData, sizeof(TxData), &Datalen, WIFI_WRITE_TIMEOUT) != WIFI_STATUS_OK) {
+ printf("> ERROR : Failed to send Data.\n");
+ }
+ }
+ } else {
+ printf("> ERROR : Failed to Receive Data.\n");
}
- else if(strstr((char *)resp, "radio=1"))
- {
- LedState = 1;
- led = 1;
- }
-
- temp = (adc_temp.read()*100);
- if(SendWebPage(LedState, temp) != WIFI_STATUS_OK)
- {
- printf("> ERROR : Cannot send web page\n");
- State = WS_ERROR;
- }
}
- }
}
- if(WIFI_StopServer(Socket) == WIFI_STATUS_OK)
- {
- WIFI_StartServer(Socket, WIFI_TCP_PROTOCOL, "", PORT);
- }
- else
- {
- State = WS_ERROR;
- }
- break;
- case WS_ERROR:
- default:
- break;
- }
}
-
-
-/**
- * @brief Send HTML page
- * @param None
- * @retval None
- */
-static WIFI_Status_t SendWebPage(uint8_t ledIsOn, float temperature)
-{
- uint8_t temp[50];
- uint16_t SentDataLength;
- WIFI_Status_t ret;
-
- /* construct web page content */
- strcpy((char *)http, (char *)"HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nPragma: no-cache\r\n\r\n");
- strcat((char *)http, (char *)"<html>\r\n<body>\r\n");
- strcat((char *)http, (char *)"<title>STM32 Web Server</title>\r\n");
- strcat((char *)http, (char *)"<h2>InventekSys : Web Server using Es-Wifi with STM32</h2>\r\n");
- strcat((char *)http, (char *)"<br /><hr>\r\n");
- strcat((char *)http, (char *)"<p><form method=\"POST\"><strong>Temp: <input type=\"text\" size=2 value=\"");
- sprintf((char *)temp, "%f", temperature);
- strcat((char *)http, (char *)temp);
- strcat((char *)http, (char *)"\"> <sup>O</sup>C");
-
- if (ledIsOn)
- {
- strcat((char *)http, (char *)"<p><input type=\"radio\" name=\"radio\" value=\"0\" >LED off");
- strcat((char *)http, (char *)"<br><input type=\"radio\" name=\"radio\" value=\"1\" checked>LED on");
- }
- else
- {
- strcat((char *)http, (char *)"<p><input type=\"radio\" name=\"radio\" value=\"0\" checked>LED off");
- strcat((char *)http, (char *)"<br><input type=\"radio\" name=\"radio\" value=\"1\" >LED on");
- }
-
- strcat((char *)http, (char *)"</strong><p><input type=\"submit\"></form></span>");
- strcat((char *)http, (char *)"</body>\r\n</html>\r\n");
-
- ret = WIFI_SendData(0, (uint8_t *)http, strlen((char *)http), &SentDataLength, WIFI_WRITE_TIMEOUT);
-
- if((ret == WIFI_STATUS_OK) && (SentDataLength != strlen((char *)http)))
- {
- ret = WIFI_STATUS_ERROR;
- }
-
- return ret;
-}