Anoney Potter
DISCO_L475VG_IOT01-wifi_http_server
Dependencies: DISCO_L475VG_IOT01A_wifi
Revision 0:4fd399f090f3, committed 2020-02-07
- Comitter:
- anoney180133
- Date:
- Fri Feb 07 10:03:33 2020 +0000
- Commit message:
- DISCO_L475VG_IOT01-wifi_http_server
Changed in this revision
diff -r 000000000000 -r 4fd399f090f3 DISCO_L475VG_IOT01A_wifi.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DISCO_L475VG_IOT01A_wifi.lib Fri Feb 07 10:03:33 2020 +0000 @@ -0,0 +1,1 @@ +https://developer.mbed.org/teams/ST/code/DISCO_L475VG_IOT01A_wifi/#c61a93635433
diff -r 000000000000 -r 4fd399f090f3 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Feb 07 10:03:33 2020 +0000
@@ -0,0 +1,249 @@
+#include "mbed.h"
+#include "wifi.h"
+/*------------------------------------------------------------------------------
+Hyperterminal settings: 115200 bauds, 8-bit data, no parity
+
+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
+
+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)
+------------------------------------------------------------------------------*/
+
+/* Private defines -----------------------------------------------------------*/
+#define WIFI_WRITE_TIMEOUT 10000
+#define WIFI_READ_TIMEOUT 10000
+#define PORT 80
+
+/* 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 MAC_Addr[6];
+int32_t Socket = -1;
+static WebServerState_t State = WS_ERROR;
+char ModuleName[32];
+DigitalOut led(LED2);
+AnalogIn adc_temp(ADC_TEMP);
+
+int main()
+{
+ int ret = 0;
+ led = 0;
+ 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("************************************************************\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 */
+ if(WIFI_Init() == WIFI_STATUS_OK) {
+ printf("ES-WIFI 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],
+ MAC_Addr[2],
+ MAC_Addr[3],
+ MAC_Addr[4],
+ MAC_Addr[5]);
+ } else {
+ printf("> ERROR : CANNOT get MAC address\n");
+ }
+
+ 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],
+ IP_Addr[1],
+ IP_Addr[2],
+ IP_Addr[3]);
+
+ printf(">Start HTTP Server... \n");
+ printf(">Wait for connection... \n");
+ State = WS_IDLE;
+ } 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;
+ }
+ 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;
+}
diff -r 000000000000 -r 4fd399f090f3 mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Fri Feb 07 10:03:33 2020 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#4c256f04596179699c4f14b6863b07cc024ca9be
diff -r 000000000000 -r 4fd399f090f3 mbed_app.json
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed_app.json Fri Feb 07 10:03:33 2020 +0000
@@ -0,0 +1,12 @@
+{
+ "config": {
+ "wifi-ssid": {
+ "help": "WiFi SSID",
+ "value": "\"Anoney Potter WiFi\""
+ },
+ "wifi-password": {
+ "help": "WiFi Password",
+ "value": "\"025399332\""
+ }
+ }
+}
\ No newline at end of file