client
Dependencies: DISCO_L475VG_IOT01A_wifi mbed stm-spirit1-rf-driver
main.cpp@0:c301ccc87f5b, 2017-08-17 (annotated)
- Committer:
- adustm
- Date:
- Thu Aug 17 15:36:07 2017 +0000
- Revision:
- 0:c301ccc87f5b
- Child:
- 2:9a54ede37c7e
WIFI HTTP SERVER example for DISCO_L475VG_IOT1A board;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
adustm | 0:c301ccc87f5b | 1 | #include "mbed.h" |
adustm | 0:c301ccc87f5b | 2 | #include "wifi.h" |
adustm | 0:c301ccc87f5b | 3 | /*------------------------------------------------------------------------------ |
adustm | 0:c301ccc87f5b | 4 | Hyperterminal settings: 115200 bauds, 8-bit data, no parity |
adustm | 0:c301ccc87f5b | 5 | |
adustm | 0:c301ccc87f5b | 6 | This example |
adustm | 0:c301ccc87f5b | 7 | - connects to a wifi network (SSID & PWD to set in mbed_app.json) |
adustm | 0:c301ccc87f5b | 8 | - displays the IP address and creates a web page |
adustm | 0:c301ccc87f5b | 9 | - then connect on its IP address on the same wifi network with another device |
adustm | 0:c301ccc87f5b | 10 | - Now able to change the led status and read the temperature |
adustm | 0:c301ccc87f5b | 11 | |
adustm | 0:c301ccc87f5b | 12 | This example uses SPI3 ( PE_0 PC_10 PC_12 PC_11), wifi_wakeup pin (PB_13), |
adustm | 0:c301ccc87f5b | 13 | wifi_dataready pin (PE_1), wifi reset pin (PE_8) |
adustm | 0:c301ccc87f5b | 14 | ------------------------------------------------------------------------------*/ |
adustm | 0:c301ccc87f5b | 15 | |
adustm | 0:c301ccc87f5b | 16 | /* Private defines -----------------------------------------------------------*/ |
adustm | 0:c301ccc87f5b | 17 | #define WIFI_WRITE_TIMEOUT 10000 |
adustm | 0:c301ccc87f5b | 18 | #define WIFI_READ_TIMEOUT 10000 |
adustm | 0:c301ccc87f5b | 19 | #define PORT 80 |
adustm | 0:c301ccc87f5b | 20 | |
adustm | 0:c301ccc87f5b | 21 | /* Private typedef------------------------------------------------------------*/ |
adustm | 0:c301ccc87f5b | 22 | typedef enum |
adustm | 0:c301ccc87f5b | 23 | { |
adustm | 0:c301ccc87f5b | 24 | WS_IDLE = 0, |
adustm | 0:c301ccc87f5b | 25 | WS_CONNECTED, |
adustm | 0:c301ccc87f5b | 26 | WS_DISCONNECTED, |
adustm | 0:c301ccc87f5b | 27 | WS_ERROR, |
adustm | 0:c301ccc87f5b | 28 | } WebServerState_t; |
adustm | 0:c301ccc87f5b | 29 | |
adustm | 0:c301ccc87f5b | 30 | /* Private macro -------------------------------------------------------------*/ |
adustm | 0:c301ccc87f5b | 31 | static int wifi_sample_run(void); |
adustm | 0:c301ccc87f5b | 32 | static void WebServerProcess(void); |
adustm | 0:c301ccc87f5b | 33 | static WIFI_Status_t SendWebPage(uint8_t ledIsOn, float temperature); |
adustm | 0:c301ccc87f5b | 34 | /* Private variables ---------------------------------------------------------*/ |
adustm | 0:c301ccc87f5b | 35 | Serial pc(SERIAL_TX, SERIAL_RX); |
adustm | 0:c301ccc87f5b | 36 | static uint8_t http[1024]; |
adustm | 0:c301ccc87f5b | 37 | static uint8_t resp[1024]; |
adustm | 0:c301ccc87f5b | 38 | uint16_t respLen; |
adustm | 0:c301ccc87f5b | 39 | uint8_t IP_Addr[4]; |
adustm | 0:c301ccc87f5b | 40 | uint8_t MAC_Addr[6]; |
adustm | 0:c301ccc87f5b | 41 | int32_t Socket = -1; |
adustm | 0:c301ccc87f5b | 42 | static WebServerState_t State = WS_ERROR; |
adustm | 0:c301ccc87f5b | 43 | char ModuleName[32]; |
adustm | 0:c301ccc87f5b | 44 | DigitalOut led(LED2); |
adustm | 0:c301ccc87f5b | 45 | AnalogIn adc_temp(ADC_TEMP); |
adustm | 0:c301ccc87f5b | 46 | |
adustm | 0:c301ccc87f5b | 47 | int main() |
adustm | 0:c301ccc87f5b | 48 | { |
adustm | 0:c301ccc87f5b | 49 | int ret = 0; |
adustm | 0:c301ccc87f5b | 50 | led = 0; |
adustm | 0:c301ccc87f5b | 51 | pc.baud(115200); |
adustm | 0:c301ccc87f5b | 52 | printf("\n"); |
adustm | 0:c301ccc87f5b | 53 | printf("************************************************************\n"); |
adustm | 0:c301ccc87f5b | 54 | printf("*** STM32 IoT Discovery kit for STM32L475 MCU ***\n"); |
adustm | 0:c301ccc87f5b | 55 | printf("*** WIFI Web Server demonstration ***\n\n"); |
adustm | 0:c301ccc87f5b | 56 | printf("*** Copy the IP address on another device connected ***\n"); |
adustm | 0:c301ccc87f5b | 57 | printf("*** to the wifi network ***\n"); |
adustm | 0:c301ccc87f5b | 58 | printf("*** Read the temperature and update the LED status ***\n"); |
adustm | 0:c301ccc87f5b | 59 | printf("************************************************************\n"); |
adustm | 0:c301ccc87f5b | 60 | |
adustm | 0:c301ccc87f5b | 61 | /* Working application */ |
adustm | 0:c301ccc87f5b | 62 | ret = wifi_sample_run(); |
adustm | 0:c301ccc87f5b | 63 | |
adustm | 0:c301ccc87f5b | 64 | if (ret != 0) { |
adustm | 0:c301ccc87f5b | 65 | return -1; |
adustm | 0:c301ccc87f5b | 66 | } |
adustm | 0:c301ccc87f5b | 67 | |
adustm | 0:c301ccc87f5b | 68 | |
adustm | 0:c301ccc87f5b | 69 | while(1) { |
adustm | 0:c301ccc87f5b | 70 | WebServerProcess (); |
adustm | 0:c301ccc87f5b | 71 | } |
adustm | 0:c301ccc87f5b | 72 | |
adustm | 0:c301ccc87f5b | 73 | } |
adustm | 0:c301ccc87f5b | 74 | |
adustm | 0:c301ccc87f5b | 75 | |
adustm | 0:c301ccc87f5b | 76 | int wifi_sample_run(void) |
adustm | 0:c301ccc87f5b | 77 | { |
adustm | 0:c301ccc87f5b | 78 | |
adustm | 0:c301ccc87f5b | 79 | /*Initialize and use WIFI module */ |
adustm | 0:c301ccc87f5b | 80 | if(WIFI_Init() == WIFI_STATUS_OK) { |
adustm | 0:c301ccc87f5b | 81 | printf("ES-WIFI Initialized.\n"); |
adustm | 0:c301ccc87f5b | 82 | |
adustm | 0:c301ccc87f5b | 83 | if(WIFI_GetMAC_Address(MAC_Addr) == WIFI_STATUS_OK) { |
adustm | 0:c301ccc87f5b | 84 | printf("> es-wifi module MAC Address : %X:%X:%X:%X:%X:%X\n", |
adustm | 0:c301ccc87f5b | 85 | MAC_Addr[0], |
adustm | 0:c301ccc87f5b | 86 | MAC_Addr[1], |
adustm | 0:c301ccc87f5b | 87 | MAC_Addr[2], |
adustm | 0:c301ccc87f5b | 88 | MAC_Addr[3], |
adustm | 0:c301ccc87f5b | 89 | MAC_Addr[4], |
adustm | 0:c301ccc87f5b | 90 | MAC_Addr[5]); |
adustm | 0:c301ccc87f5b | 91 | } else { |
adustm | 0:c301ccc87f5b | 92 | printf("> ERROR : CANNOT get MAC address\n"); |
adustm | 0:c301ccc87f5b | 93 | } |
adustm | 0:c301ccc87f5b | 94 | |
adustm | 0:c301ccc87f5b | 95 | if( WIFI_Connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, WIFI_ECN_WPA2_PSK) == WIFI_STATUS_OK) { |
adustm | 0:c301ccc87f5b | 96 | printf("> es-wifi module connected \n"); |
adustm | 0:c301ccc87f5b | 97 | |
adustm | 0:c301ccc87f5b | 98 | if(WIFI_GetIP_Address(IP_Addr) == WIFI_STATUS_OK) { |
adustm | 0:c301ccc87f5b | 99 | printf("> es-wifi module got IP Address : %d.%d.%d.%d\n", |
adustm | 0:c301ccc87f5b | 100 | IP_Addr[0], |
adustm | 0:c301ccc87f5b | 101 | IP_Addr[1], |
adustm | 0:c301ccc87f5b | 102 | IP_Addr[2], |
adustm | 0:c301ccc87f5b | 103 | IP_Addr[3]); |
adustm | 0:c301ccc87f5b | 104 | |
adustm | 0:c301ccc87f5b | 105 | printf(">Start HTTP Server... \n"); |
adustm | 0:c301ccc87f5b | 106 | printf(">Wait for connection... \n"); |
adustm | 0:c301ccc87f5b | 107 | State = WS_IDLE; |
adustm | 0:c301ccc87f5b | 108 | } else { |
adustm | 0:c301ccc87f5b | 109 | printf("> ERROR : es-wifi module CANNOT get IP address\n"); |
adustm | 0:c301ccc87f5b | 110 | return -1; |
adustm | 0:c301ccc87f5b | 111 | } |
adustm | 0:c301ccc87f5b | 112 | } else { |
adustm | 0:c301ccc87f5b | 113 | printf("> ERROR : es-wifi module NOT connected\n"); |
adustm | 0:c301ccc87f5b | 114 | return -1; |
adustm | 0:c301ccc87f5b | 115 | } |
adustm | 0:c301ccc87f5b | 116 | } else { |
adustm | 0:c301ccc87f5b | 117 | printf("> ERROR : WIFI Module cannot be initialized.\n"); |
adustm | 0:c301ccc87f5b | 118 | return -1; |
adustm | 0:c301ccc87f5b | 119 | } |
adustm | 0:c301ccc87f5b | 120 | return 0; |
adustm | 0:c301ccc87f5b | 121 | } |
adustm | 0:c301ccc87f5b | 122 | |
adustm | 0:c301ccc87f5b | 123 | /** |
adustm | 0:c301ccc87f5b | 124 | * @brief Send HTML page |
adustm | 0:c301ccc87f5b | 125 | * @param None |
adustm | 0:c301ccc87f5b | 126 | * @retval None |
adustm | 0:c301ccc87f5b | 127 | */ |
adustm | 0:c301ccc87f5b | 128 | static void WebServerProcess(void) |
adustm | 0:c301ccc87f5b | 129 | { |
adustm | 0:c301ccc87f5b | 130 | uint8_t LedState = 0; |
adustm | 0:c301ccc87f5b | 131 | float temp; |
adustm | 0:c301ccc87f5b | 132 | switch(State) |
adustm | 0:c301ccc87f5b | 133 | { |
adustm | 0:c301ccc87f5b | 134 | case WS_IDLE: |
adustm | 0:c301ccc87f5b | 135 | Socket = 0; |
adustm | 0:c301ccc87f5b | 136 | WIFI_StartServer(Socket, WIFI_TCP_PROTOCOL, "", PORT); |
adustm | 0:c301ccc87f5b | 137 | |
adustm | 0:c301ccc87f5b | 138 | if(Socket != -1) |
adustm | 0:c301ccc87f5b | 139 | { |
adustm | 0:c301ccc87f5b | 140 | printf("> HTTP Server Started \n"); |
adustm | 0:c301ccc87f5b | 141 | State = WS_CONNECTED; |
adustm | 0:c301ccc87f5b | 142 | } |
adustm | 0:c301ccc87f5b | 143 | else |
adustm | 0:c301ccc87f5b | 144 | { |
adustm | 0:c301ccc87f5b | 145 | printf("> ERROR : Connection cannot be established.\n"); |
adustm | 0:c301ccc87f5b | 146 | State = WS_ERROR; |
adustm | 0:c301ccc87f5b | 147 | } |
adustm | 0:c301ccc87f5b | 148 | break; |
adustm | 0:c301ccc87f5b | 149 | |
adustm | 0:c301ccc87f5b | 150 | case WS_CONNECTED: |
adustm | 0:c301ccc87f5b | 151 | |
adustm | 0:c301ccc87f5b | 152 | WIFI_ReceiveData(Socket, resp, 1200, &respLen, WIFI_READ_TIMEOUT); |
adustm | 0:c301ccc87f5b | 153 | |
adustm | 0:c301ccc87f5b | 154 | if( respLen > 0) |
adustm | 0:c301ccc87f5b | 155 | { |
adustm | 0:c301ccc87f5b | 156 | if(strstr((char *)resp, "GET")) /* GET: put web page */ |
adustm | 0:c301ccc87f5b | 157 | { |
adustm | 0:c301ccc87f5b | 158 | temp = (adc_temp.read()*100); |
adustm | 0:c301ccc87f5b | 159 | if(SendWebPage(LedState, temp) != WIFI_STATUS_OK) |
adustm | 0:c301ccc87f5b | 160 | { |
adustm | 0:c301ccc87f5b | 161 | printf("> ERROR : Cannot send web page\n"); |
adustm | 0:c301ccc87f5b | 162 | State = WS_ERROR; |
adustm | 0:c301ccc87f5b | 163 | } |
adustm | 0:c301ccc87f5b | 164 | } |
adustm | 0:c301ccc87f5b | 165 | else if(strstr((char *)resp, "POST"))/* POST: received info */ |
adustm | 0:c301ccc87f5b | 166 | { |
adustm | 0:c301ccc87f5b | 167 | if(strstr((char *)resp, "radio")) |
adustm | 0:c301ccc87f5b | 168 | { |
adustm | 0:c301ccc87f5b | 169 | if(strstr((char *)resp, "radio=0")) |
adustm | 0:c301ccc87f5b | 170 | { |
adustm | 0:c301ccc87f5b | 171 | LedState = 0; |
adustm | 0:c301ccc87f5b | 172 | led = 0; |
adustm | 0:c301ccc87f5b | 173 | } |
adustm | 0:c301ccc87f5b | 174 | else if(strstr((char *)resp, "radio=1")) |
adustm | 0:c301ccc87f5b | 175 | { |
adustm | 0:c301ccc87f5b | 176 | LedState = 1; |
adustm | 0:c301ccc87f5b | 177 | led = 1; |
adustm | 0:c301ccc87f5b | 178 | } |
adustm | 0:c301ccc87f5b | 179 | |
adustm | 0:c301ccc87f5b | 180 | temp = (adc_temp.read()*100); |
adustm | 0:c301ccc87f5b | 181 | if(SendWebPage(LedState, temp) != WIFI_STATUS_OK) |
adustm | 0:c301ccc87f5b | 182 | { |
adustm | 0:c301ccc87f5b | 183 | printf("> ERROR : Cannot send web page\n"); |
adustm | 0:c301ccc87f5b | 184 | State = WS_ERROR; |
adustm | 0:c301ccc87f5b | 185 | } |
adustm | 0:c301ccc87f5b | 186 | } |
adustm | 0:c301ccc87f5b | 187 | } |
adustm | 0:c301ccc87f5b | 188 | } |
adustm | 0:c301ccc87f5b | 189 | if(WIFI_StopServer(Socket) == WIFI_STATUS_OK) |
adustm | 0:c301ccc87f5b | 190 | { |
adustm | 0:c301ccc87f5b | 191 | WIFI_StartServer(Socket, WIFI_TCP_PROTOCOL, "", PORT); |
adustm | 0:c301ccc87f5b | 192 | } |
adustm | 0:c301ccc87f5b | 193 | else |
adustm | 0:c301ccc87f5b | 194 | { |
adustm | 0:c301ccc87f5b | 195 | State = WS_ERROR; |
adustm | 0:c301ccc87f5b | 196 | } |
adustm | 0:c301ccc87f5b | 197 | break; |
adustm | 0:c301ccc87f5b | 198 | case WS_ERROR: |
adustm | 0:c301ccc87f5b | 199 | default: |
adustm | 0:c301ccc87f5b | 200 | break; |
adustm | 0:c301ccc87f5b | 201 | } |
adustm | 0:c301ccc87f5b | 202 | } |
adustm | 0:c301ccc87f5b | 203 | |
adustm | 0:c301ccc87f5b | 204 | |
adustm | 0:c301ccc87f5b | 205 | /** |
adustm | 0:c301ccc87f5b | 206 | * @brief Send HTML page |
adustm | 0:c301ccc87f5b | 207 | * @param None |
adustm | 0:c301ccc87f5b | 208 | * @retval None |
adustm | 0:c301ccc87f5b | 209 | */ |
adustm | 0:c301ccc87f5b | 210 | static WIFI_Status_t SendWebPage(uint8_t ledIsOn, float temperature) |
adustm | 0:c301ccc87f5b | 211 | { |
adustm | 0:c301ccc87f5b | 212 | uint8_t temp[50]; |
adustm | 0:c301ccc87f5b | 213 | uint16_t SentDataLength; |
adustm | 0:c301ccc87f5b | 214 | WIFI_Status_t ret; |
adustm | 0:c301ccc87f5b | 215 | |
adustm | 0:c301ccc87f5b | 216 | /* construct web page content */ |
adustm | 0:c301ccc87f5b | 217 | strcpy((char *)http, (char *)"HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nPragma: no-cache\r\n\r\n"); |
adustm | 0:c301ccc87f5b | 218 | strcat((char *)http, (char *)"<html>\r\n<body>\r\n"); |
adustm | 0:c301ccc87f5b | 219 | strcat((char *)http, (char *)"<title>STM32 Web Server</title>\r\n"); |
adustm | 0:c301ccc87f5b | 220 | strcat((char *)http, (char *)"<h2>InventekSys : Web Server using Es-Wifi with STM32</h2>\r\n"); |
adustm | 0:c301ccc87f5b | 221 | strcat((char *)http, (char *)"<br /><hr>\r\n"); |
adustm | 0:c301ccc87f5b | 222 | strcat((char *)http, (char *)"<p><form method=\"POST\"><strong>Temp: <input type=\"text\" size=2 value=\""); |
adustm | 0:c301ccc87f5b | 223 | sprintf((char *)temp, "%f", temperature); |
adustm | 0:c301ccc87f5b | 224 | strcat((char *)http, (char *)temp); |
adustm | 0:c301ccc87f5b | 225 | strcat((char *)http, (char *)"\"> <sup>O</sup>C"); |
adustm | 0:c301ccc87f5b | 226 | |
adustm | 0:c301ccc87f5b | 227 | if (ledIsOn) |
adustm | 0:c301ccc87f5b | 228 | { |
adustm | 0:c301ccc87f5b | 229 | strcat((char *)http, (char *)"<p><input type=\"radio\" name=\"radio\" value=\"0\" >LED off"); |
adustm | 0:c301ccc87f5b | 230 | strcat((char *)http, (char *)"<br><input type=\"radio\" name=\"radio\" value=\"1\" checked>LED on"); |
adustm | 0:c301ccc87f5b | 231 | } |
adustm | 0:c301ccc87f5b | 232 | else |
adustm | 0:c301ccc87f5b | 233 | { |
adustm | 0:c301ccc87f5b | 234 | strcat((char *)http, (char *)"<p><input type=\"radio\" name=\"radio\" value=\"0\" checked>LED off"); |
adustm | 0:c301ccc87f5b | 235 | strcat((char *)http, (char *)"<br><input type=\"radio\" name=\"radio\" value=\"1\" >LED on"); |
adustm | 0:c301ccc87f5b | 236 | } |
adustm | 0:c301ccc87f5b | 237 | |
adustm | 0:c301ccc87f5b | 238 | strcat((char *)http, (char *)"</strong><p><input type=\"submit\"></form></span>"); |
adustm | 0:c301ccc87f5b | 239 | strcat((char *)http, (char *)"</body>\r\n</html>\r\n"); |
adustm | 0:c301ccc87f5b | 240 | |
adustm | 0:c301ccc87f5b | 241 | ret = WIFI_SendData(0, (uint8_t *)http, strlen((char *)http), &SentDataLength, WIFI_WRITE_TIMEOUT); |
adustm | 0:c301ccc87f5b | 242 | |
adustm | 0:c301ccc87f5b | 243 | if((ret == WIFI_STATUS_OK) && (SentDataLength != strlen((char *)http))) |
adustm | 0:c301ccc87f5b | 244 | { |
adustm | 0:c301ccc87f5b | 245 | ret = WIFI_STATUS_ERROR; |
adustm | 0:c301ccc87f5b | 246 | } |
adustm | 0:c301ccc87f5b | 247 | |
adustm | 0:c301ccc87f5b | 248 | return ret; |
adustm | 0:c301ccc87f5b | 249 | } |