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keyboard input, serial com test
Dependencies: mbed DISCO_L475VG_IOT01A_wifi TextLCD USBHost
src/server.cpp@6:9d975a9d2728, 2019-08-15 (annotated)
- Committer:
- duchonic
- Date:
- Thu Aug 15 19:33:04 2019 +0000
- Revision:
- 6:9d975a9d2728
first
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
duchonic | 6:9d975a9d2728 | 1 | #include "mbed.h" |
duchonic | 6:9d975a9d2728 | 2 | #include "wifi.h" |
duchonic | 6:9d975a9d2728 | 3 | #include "rtos.h" |
duchonic | 6:9d975a9d2728 | 4 | #include "inc/config.h" |
duchonic | 6:9d975a9d2728 | 5 | |
duchonic | 6:9d975a9d2728 | 6 | /*------------------------------------------------------------------------------ |
duchonic | 6:9d975a9d2728 | 7 | Hyperterminal settings: 115200 bauds, 8-bit data, no parity |
duchonic | 6:9d975a9d2728 | 8 | |
duchonic | 6:9d975a9d2728 | 9 | This example |
duchonic | 6:9d975a9d2728 | 10 | - connects to a wifi network (SSID & PWD to set in mbed_app.json) |
duchonic | 6:9d975a9d2728 | 11 | - displays the IP address and creates a web page |
duchonic | 6:9d975a9d2728 | 12 | - then connect on its IP address on the same wifi network with another device |
duchonic | 6:9d975a9d2728 | 13 | - Now able to change the led status and read the temperature |
duchonic | 6:9d975a9d2728 | 14 | |
duchonic | 6:9d975a9d2728 | 15 | This example uses SPI3 ( PE_0 PC_10 PC_12 PC_11), wifi_wakeup pin (PB_13), |
duchonic | 6:9d975a9d2728 | 16 | wifi_dataready pin (PE_1), wifi reset pin (PE_8) |
duchonic | 6:9d975a9d2728 | 17 | ------------------------------------------------------------------------------*/ |
duchonic | 6:9d975a9d2728 | 18 | |
duchonic | 6:9d975a9d2728 | 19 | /* Private defines -----------------------------------------------------------*/ |
duchonic | 6:9d975a9d2728 | 20 | #define WIFI_WRITE_TIMEOUT 10000 |
duchonic | 6:9d975a9d2728 | 21 | #define WIFI_READ_TIMEOUT 10000 |
duchonic | 6:9d975a9d2728 | 22 | #define PORT 80 |
duchonic | 6:9d975a9d2728 | 23 | |
duchonic | 6:9d975a9d2728 | 24 | /* Private typedef------------------------------------------------------------*/ |
duchonic | 6:9d975a9d2728 | 25 | typedef enum |
duchonic | 6:9d975a9d2728 | 26 | { |
duchonic | 6:9d975a9d2728 | 27 | WS_IDLE = 0, |
duchonic | 6:9d975a9d2728 | 28 | WS_CONNECTED, |
duchonic | 6:9d975a9d2728 | 29 | WS_DISCONNECTED, |
duchonic | 6:9d975a9d2728 | 30 | WS_ERROR, |
duchonic | 6:9d975a9d2728 | 31 | } WebServerState_t; |
duchonic | 6:9d975a9d2728 | 32 | |
duchonic | 6:9d975a9d2728 | 33 | /* Private macro -------------------------------------------------------------*/ |
duchonic | 6:9d975a9d2728 | 34 | static int wifi_sample_run(void); |
duchonic | 6:9d975a9d2728 | 35 | static void WebServerProcess(void); |
duchonic | 6:9d975a9d2728 | 36 | static WIFI_Status_t SendWebPage(uint8_t ledIsOn, float temperature); |
duchonic | 6:9d975a9d2728 | 37 | /* Private variables ---------------------------------------------------------*/ |
duchonic | 6:9d975a9d2728 | 38 | |
duchonic | 6:9d975a9d2728 | 39 | static uint8_t http[1024]; |
duchonic | 6:9d975a9d2728 | 40 | static uint8_t resp[1024]; |
duchonic | 6:9d975a9d2728 | 41 | uint16_t respLen; |
duchonic | 6:9d975a9d2728 | 42 | uint8_t IP_Addr[4]; |
duchonic | 6:9d975a9d2728 | 43 | uint8_t MAC_Addr[6]; |
duchonic | 6:9d975a9d2728 | 44 | int32_t Socket = -1; |
duchonic | 6:9d975a9d2728 | 45 | static WebServerState_t State = WS_ERROR; |
duchonic | 6:9d975a9d2728 | 46 | char ModuleName[32]; |
duchonic | 6:9d975a9d2728 | 47 | |
duchonic | 6:9d975a9d2728 | 48 | DigitalOut led(LED2); |
duchonic | 6:9d975a9d2728 | 49 | AnalogIn adc_temp(ADC_TEMP); |
duchonic | 6:9d975a9d2728 | 50 | |
duchonic | 6:9d975a9d2728 | 51 | void server_task(void const *) { |
duchonic | 6:9d975a9d2728 | 52 | int ret = 0; |
duchonic | 6:9d975a9d2728 | 53 | led = 0; |
duchonic | 6:9d975a9d2728 | 54 | |
duchonic | 6:9d975a9d2728 | 55 | printf("************************************************************\n"); |
duchonic | 6:9d975a9d2728 | 56 | printf("*** STM32 IoT Discovery kit for STM32L475 MCU ***\n"); |
duchonic | 6:9d975a9d2728 | 57 | printf("*** WIFI Web Server demonstration ***\n"); |
duchonic | 6:9d975a9d2728 | 58 | printf("************************************************************\n"); |
duchonic | 6:9d975a9d2728 | 59 | |
duchonic | 6:9d975a9d2728 | 60 | /* Working application */ |
duchonic | 6:9d975a9d2728 | 61 | ret = wifi_sample_run(); |
duchonic | 6:9d975a9d2728 | 62 | |
duchonic | 6:9d975a9d2728 | 63 | if (ret == 0) { |
duchonic | 6:9d975a9d2728 | 64 | while(1) { |
duchonic | 6:9d975a9d2728 | 65 | WebServerProcess (); |
duchonic | 6:9d975a9d2728 | 66 | Thread::wait(1); |
duchonic | 6:9d975a9d2728 | 67 | } |
duchonic | 6:9d975a9d2728 | 68 | } |
duchonic | 6:9d975a9d2728 | 69 | } |
duchonic | 6:9d975a9d2728 | 70 | |
duchonic | 6:9d975a9d2728 | 71 | int wifi_sample_run(void) |
duchonic | 6:9d975a9d2728 | 72 | { |
duchonic | 6:9d975a9d2728 | 73 | |
duchonic | 6:9d975a9d2728 | 74 | /*Initialize and use WIFI module */ |
duchonic | 6:9d975a9d2728 | 75 | if(WIFI_Init() == WIFI_STATUS_OK) { |
duchonic | 6:9d975a9d2728 | 76 | printf("WIFI Initialized.\n"); |
duchonic | 6:9d975a9d2728 | 77 | |
duchonic | 6:9d975a9d2728 | 78 | if(WIFI_GetMAC_Address(MAC_Addr) == WIFI_STATUS_OK) { |
duchonic | 6:9d975a9d2728 | 79 | printf("> wifi module MAC Address : %X:%X:%X:%X:%X:%X\n", |
duchonic | 6:9d975a9d2728 | 80 | MAC_Addr[0], |
duchonic | 6:9d975a9d2728 | 81 | MAC_Addr[1], |
duchonic | 6:9d975a9d2728 | 82 | MAC_Addr[2], |
duchonic | 6:9d975a9d2728 | 83 | MAC_Addr[3], |
duchonic | 6:9d975a9d2728 | 84 | MAC_Addr[4], |
duchonic | 6:9d975a9d2728 | 85 | MAC_Addr[5]); |
duchonic | 6:9d975a9d2728 | 86 | } else { |
duchonic | 6:9d975a9d2728 | 87 | printf("> ERROR : CANNOT get MAC address\n"); |
duchonic | 6:9d975a9d2728 | 88 | } |
duchonic | 6:9d975a9d2728 | 89 | |
duchonic | 6:9d975a9d2728 | 90 | if( WIFI_Connect("nur-41416", "5j5b-6jx3-gclk-keew", WIFI_ECN_WPA2_PSK) == WIFI_STATUS_OK) { |
duchonic | 6:9d975a9d2728 | 91 | printf("> wifi module connected \n"); |
duchonic | 6:9d975a9d2728 | 92 | |
duchonic | 6:9d975a9d2728 | 93 | if(WIFI_GetIP_Address(IP_Addr) == WIFI_STATUS_OK) { |
duchonic | 6:9d975a9d2728 | 94 | printf("> wifi module got IP Address : %d.%d.%d.%d\n", |
duchonic | 6:9d975a9d2728 | 95 | IP_Addr[0], |
duchonic | 6:9d975a9d2728 | 96 | IP_Addr[1], |
duchonic | 6:9d975a9d2728 | 97 | IP_Addr[2], |
duchonic | 6:9d975a9d2728 | 98 | IP_Addr[3]); |
duchonic | 6:9d975a9d2728 | 99 | |
duchonic | 6:9d975a9d2728 | 100 | printf(">Start HTTP Server... \n"); |
duchonic | 6:9d975a9d2728 | 101 | printf(">Wait for connection... \n"); |
duchonic | 6:9d975a9d2728 | 102 | State = WS_IDLE; |
duchonic | 6:9d975a9d2728 | 103 | } else { |
duchonic | 6:9d975a9d2728 | 104 | printf("> ERROR : wifi module CANNOT get IP address\n"); |
duchonic | 6:9d975a9d2728 | 105 | return -1; |
duchonic | 6:9d975a9d2728 | 106 | } |
duchonic | 6:9d975a9d2728 | 107 | } else { |
duchonic | 6:9d975a9d2728 | 108 | printf("> ERROR : wifi module NOT connected\n"); |
duchonic | 6:9d975a9d2728 | 109 | return -1; |
duchonic | 6:9d975a9d2728 | 110 | } |
duchonic | 6:9d975a9d2728 | 111 | } else { |
duchonic | 6:9d975a9d2728 | 112 | printf("> ERROR : WIFI Module cannot be initialized.\n"); |
duchonic | 6:9d975a9d2728 | 113 | return -1; |
duchonic | 6:9d975a9d2728 | 114 | } |
duchonic | 6:9d975a9d2728 | 115 | return 0; |
duchonic | 6:9d975a9d2728 | 116 | } |
duchonic | 6:9d975a9d2728 | 117 | |
duchonic | 6:9d975a9d2728 | 118 | /** |
duchonic | 6:9d975a9d2728 | 119 | * @brief Send HTML page |
duchonic | 6:9d975a9d2728 | 120 | * @param None |
duchonic | 6:9d975a9d2728 | 121 | * @retval None |
duchonic | 6:9d975a9d2728 | 122 | */ |
duchonic | 6:9d975a9d2728 | 123 | static void WebServerProcess(void) |
duchonic | 6:9d975a9d2728 | 124 | { |
duchonic | 6:9d975a9d2728 | 125 | uint8_t LedState = 0; |
duchonic | 6:9d975a9d2728 | 126 | float temp; |
duchonic | 6:9d975a9d2728 | 127 | switch(State) |
duchonic | 6:9d975a9d2728 | 128 | { |
duchonic | 6:9d975a9d2728 | 129 | case WS_IDLE:{ |
duchonic | 6:9d975a9d2728 | 130 | Socket = 0; |
duchonic | 6:9d975a9d2728 | 131 | WIFI_StartServer(Socket, WIFI_TCP_PROTOCOL, "", PORT); |
duchonic | 6:9d975a9d2728 | 132 | |
duchonic | 6:9d975a9d2728 | 133 | if(Socket != -1) |
duchonic | 6:9d975a9d2728 | 134 | { |
duchonic | 6:9d975a9d2728 | 135 | printf("> HTTP Server Started \n"); |
duchonic | 6:9d975a9d2728 | 136 | State = WS_CONNECTED; |
duchonic | 6:9d975a9d2728 | 137 | } |
duchonic | 6:9d975a9d2728 | 138 | else |
duchonic | 6:9d975a9d2728 | 139 | { |
duchonic | 6:9d975a9d2728 | 140 | printf("> ERROR : Connection cannot be established.\n"); |
duchonic | 6:9d975a9d2728 | 141 | State = WS_ERROR; |
duchonic | 6:9d975a9d2728 | 142 | } |
duchonic | 6:9d975a9d2728 | 143 | break; |
duchonic | 6:9d975a9d2728 | 144 | } |
duchonic | 6:9d975a9d2728 | 145 | case WS_CONNECTED:{ |
duchonic | 6:9d975a9d2728 | 146 | |
duchonic | 6:9d975a9d2728 | 147 | WIFI_ReceiveData(Socket, resp, 1200, &respLen, WIFI_READ_TIMEOUT); |
duchonic | 6:9d975a9d2728 | 148 | |
duchonic | 6:9d975a9d2728 | 149 | if( respLen > 0) |
duchonic | 6:9d975a9d2728 | 150 | { |
duchonic | 6:9d975a9d2728 | 151 | if(strstr((char *)resp, "GET")) /* GET: put web page */ |
duchonic | 6:9d975a9d2728 | 152 | { |
duchonic | 6:9d975a9d2728 | 153 | printf("get\n"); |
duchonic | 6:9d975a9d2728 | 154 | temp = (adc_temp.read()*100); |
duchonic | 6:9d975a9d2728 | 155 | if(SendWebPage(LedState, temp) != WIFI_STATUS_OK) |
duchonic | 6:9d975a9d2728 | 156 | { |
duchonic | 6:9d975a9d2728 | 157 | printf("> ERROR : Cannot send web page\n"); |
duchonic | 6:9d975a9d2728 | 158 | State = WS_ERROR; |
duchonic | 6:9d975a9d2728 | 159 | } |
duchonic | 6:9d975a9d2728 | 160 | } |
duchonic | 6:9d975a9d2728 | 161 | else if(strstr((char *)resp, "POST"))/* POST: received info */ |
duchonic | 6:9d975a9d2728 | 162 | { |
duchonic | 6:9d975a9d2728 | 163 | printf("post\n"); |
duchonic | 6:9d975a9d2728 | 164 | if(strstr((char *)resp, "radio")) |
duchonic | 6:9d975a9d2728 | 165 | { |
duchonic | 6:9d975a9d2728 | 166 | if(strstr((char *)resp, "radio=0")) |
duchonic | 6:9d975a9d2728 | 167 | { |
duchonic | 6:9d975a9d2728 | 168 | LedState = 0; |
duchonic | 6:9d975a9d2728 | 169 | led = 0; |
duchonic | 6:9d975a9d2728 | 170 | } |
duchonic | 6:9d975a9d2728 | 171 | else if(strstr((char *)resp, "radio=1")) |
duchonic | 6:9d975a9d2728 | 172 | { |
duchonic | 6:9d975a9d2728 | 173 | LedState = 1; |
duchonic | 6:9d975a9d2728 | 174 | led = 1; |
duchonic | 6:9d975a9d2728 | 175 | } |
duchonic | 6:9d975a9d2728 | 176 | |
duchonic | 6:9d975a9d2728 | 177 | temp = (adc_temp.read()*100); |
duchonic | 6:9d975a9d2728 | 178 | if(SendWebPage(LedState, temp) != WIFI_STATUS_OK) |
duchonic | 6:9d975a9d2728 | 179 | { |
duchonic | 6:9d975a9d2728 | 180 | printf("> ERROR : Cannot send web page\n"); |
duchonic | 6:9d975a9d2728 | 181 | State = WS_ERROR; |
duchonic | 6:9d975a9d2728 | 182 | } |
duchonic | 6:9d975a9d2728 | 183 | } |
duchonic | 6:9d975a9d2728 | 184 | } |
duchonic | 6:9d975a9d2728 | 185 | else{ |
duchonic | 6:9d975a9d2728 | 186 | printf("unknown\n"); |
duchonic | 6:9d975a9d2728 | 187 | } |
duchonic | 6:9d975a9d2728 | 188 | } |
duchonic | 6:9d975a9d2728 | 189 | |
duchonic | 6:9d975a9d2728 | 190 | if(WIFI_StopServer(Socket) == WIFI_STATUS_OK) |
duchonic | 6:9d975a9d2728 | 191 | { |
duchonic | 6:9d975a9d2728 | 192 | WIFI_StartServer(Socket, WIFI_TCP_PROTOCOL, "", PORT); |
duchonic | 6:9d975a9d2728 | 193 | } |
duchonic | 6:9d975a9d2728 | 194 | else |
duchonic | 6:9d975a9d2728 | 195 | { |
duchonic | 6:9d975a9d2728 | 196 | State = WS_ERROR; |
duchonic | 6:9d975a9d2728 | 197 | printf("some error\n"); |
duchonic | 6:9d975a9d2728 | 198 | } |
duchonic | 6:9d975a9d2728 | 199 | break; |
duchonic | 6:9d975a9d2728 | 200 | } |
duchonic | 6:9d975a9d2728 | 201 | case WS_ERROR: |
duchonic | 6:9d975a9d2728 | 202 | default:{ |
duchonic | 6:9d975a9d2728 | 203 | printf("error\n"); |
duchonic | 6:9d975a9d2728 | 204 | break; |
duchonic | 6:9d975a9d2728 | 205 | } |
duchonic | 6:9d975a9d2728 | 206 | } |
duchonic | 6:9d975a9d2728 | 207 | } |
duchonic | 6:9d975a9d2728 | 208 | |
duchonic | 6:9d975a9d2728 | 209 | |
duchonic | 6:9d975a9d2728 | 210 | /** |
duchonic | 6:9d975a9d2728 | 211 | * @brief Send HTML page |
duchonic | 6:9d975a9d2728 | 212 | * @param None |
duchonic | 6:9d975a9d2728 | 213 | * @retval None |
duchonic | 6:9d975a9d2728 | 214 | */ |
duchonic | 6:9d975a9d2728 | 215 | static WIFI_Status_t SendWebPage(uint8_t ledIsOn, float temperature) |
duchonic | 6:9d975a9d2728 | 216 | { |
duchonic | 6:9d975a9d2728 | 217 | uint8_t pause[50]; |
duchonic | 6:9d975a9d2728 | 218 | uint8_t cycles[50]; |
duchonic | 6:9d975a9d2728 | 219 | uint8_t temp[50]; |
duchonic | 6:9d975a9d2728 | 220 | uint16_t SentDataLength; |
duchonic | 6:9d975a9d2728 | 221 | WIFI_Status_t ret; |
duchonic | 6:9d975a9d2728 | 222 | |
duchonic | 6:9d975a9d2728 | 223 | /* construct web page content */ |
duchonic | 6:9d975a9d2728 | 224 | strcpy((char *)http, (char *)"HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nPragma: no-cache\r\n\r\n"); |
duchonic | 6:9d975a9d2728 | 225 | strcat((char *)http, (char *)"<html>\r\n<body>\r\n"); |
duchonic | 6:9d975a9d2728 | 226 | strcat((char *)http, (char *)"<title>STM32 Web Server</title>\r\n"); |
duchonic | 6:9d975a9d2728 | 227 | strcat((char *)http, (char *)"<h2>Web Server</h2>\r\n"); |
duchonic | 6:9d975a9d2728 | 228 | strcat((char *)http, (char *)"<br /><hr>\r\n"); |
duchonic | 6:9d975a9d2728 | 229 | sprintf((char *)pause, "<h2>config: %s </h2>\r\n" "", getPause().c_str()); |
duchonic | 6:9d975a9d2728 | 230 | strcat((char *)http, (char *)pause); |
duchonic | 6:9d975a9d2728 | 231 | sprintf((char *)cycles, "<h2>config: %s </h2>\r\n" "", getCycles().c_str()); |
duchonic | 6:9d975a9d2728 | 232 | strcat((char *)http, (char *)cycles); |
duchonic | 6:9d975a9d2728 | 233 | strcat((char *)http, (char *)"<br /><hr>\r\n"); |
duchonic | 6:9d975a9d2728 | 234 | strcat((char *)http, (char *)"<p><form method=\"POST\"><strong>Temp: <input type=\"text\" size=2 value=\""); |
duchonic | 6:9d975a9d2728 | 235 | sprintf((char *)temp, "%f", temperature); |
duchonic | 6:9d975a9d2728 | 236 | strcat((char *)http, (char *)temp); |
duchonic | 6:9d975a9d2728 | 237 | strcat((char *)http, (char *)"\"> <sup>O</sup>C"); |
duchonic | 6:9d975a9d2728 | 238 | |
duchonic | 6:9d975a9d2728 | 239 | if (ledIsOn) |
duchonic | 6:9d975a9d2728 | 240 | { |
duchonic | 6:9d975a9d2728 | 241 | strcat((char *)http, (char *)"<p><input type=\"radio\" name=\"radio\" value=\"0\" >LED off"); |
duchonic | 6:9d975a9d2728 | 242 | strcat((char *)http, (char *)"<br><input type=\"radio\" name=\"radio\" value=\"1\" checked>LED on"); |
duchonic | 6:9d975a9d2728 | 243 | } |
duchonic | 6:9d975a9d2728 | 244 | else |
duchonic | 6:9d975a9d2728 | 245 | { |
duchonic | 6:9d975a9d2728 | 246 | strcat((char *)http, (char *)"<p><input type=\"radio\" name=\"radio\" value=\"0\" checked>LED off"); |
duchonic | 6:9d975a9d2728 | 247 | strcat((char *)http, (char *)"<br><input type=\"radio\" name=\"radio\" value=\"1\" >LED on"); |
duchonic | 6:9d975a9d2728 | 248 | } |
duchonic | 6:9d975a9d2728 | 249 | |
duchonic | 6:9d975a9d2728 | 250 | strcat((char *)http, (char *)"</strong><p><input type=\"submit\"></form></span>"); |
duchonic | 6:9d975a9d2728 | 251 | strcat((char *)http, (char *)"</body>\r\n</html>\r\n"); |
duchonic | 6:9d975a9d2728 | 252 | |
duchonic | 6:9d975a9d2728 | 253 | ret = WIFI_SendData(0, (uint8_t *)http, strlen((char *)http), &SentDataLength, WIFI_WRITE_TIMEOUT); |
duchonic | 6:9d975a9d2728 | 254 | |
duchonic | 6:9d975a9d2728 | 255 | if((ret == WIFI_STATUS_OK) && (SentDataLength != strlen((char *)http))) |
duchonic | 6:9d975a9d2728 | 256 | { |
duchonic | 6:9d975a9d2728 | 257 | ret = WIFI_STATUS_ERROR; |
duchonic | 6:9d975a9d2728 | 258 | } |
duchonic | 6:9d975a9d2728 | 259 | |
duchonic | 6:9d975a9d2728 | 260 | return ret; |
duchonic | 6:9d975a9d2728 | 261 | } |