Nuvoton / Mbed OS NuMaker-mbed-wifi-tcp

NuMaker WiFi TCP Example

main.cpp@19:79f168fa9a8a, 2018-10-16 (annotated)

Committer:
ccli8
Date:
Tue Oct 16 14:31:27 2018 +0800
Revision:
19:79f168fa9a8a
Parent:
17:9d31fd2023fd
Child:
20:41c819860b4d
Refine configuration



1.  Refine stdio configuration

    (1) Move baud rate configuration from main.cpp to mbed_app.json

    (2) Replace output.printf with printf

    (3) Enable newline conversion

2.  Refine WiFi configuration

    (1) Specify uart-serial-rxbuf-size/uart-serial-txbuf-size for every target

    (2) Specify ESP8266_AT_SEL for supported targets

3.  Substitute platform.heap-stats-enabled for MBED_HEAP_STATS_ENABLED to enable heap statistics

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cyliang 0:2198c8de64fe 1
cyliang 0:2198c8de64fe 2 #include <algorithm>
cyliang 0:2198c8de64fe 3 #include "mbed.h"
ccli8 15:32a6a29ffcb3 4 #include "mbed_stats.h"
cyliang 0:2198c8de64fe 5 #include "TCPSocket.h"
cyliang 0:2198c8de64fe 6
cyliang 0:2198c8de64fe 7 //#define LOCAL_LAN
cyliang 0:2198c8de64fe 8
cyliang 0:2198c8de64fe 9 #define ETHERNET 1
cyliang 0:2198c8de64fe 10 #define WIFI 2
cyliang 0:2198c8de64fe 11 #define MESH_LOWPAN_ND 3
cyliang 0:2198c8de64fe 12 #define MESH_THREAD 4
cyliang 0:2198c8de64fe 13
cyliang 0:2198c8de64fe 14 #if MBED_CONF_APP_NETWORK_INTERFACE == WIFI
ccli8 16:f705110e6c04 15 #define ESP8266_AT_ONBOARD 1 // On-board ESP8266
ccli8 16:f705110e6c04 16 #define ESP8266_AT_EXTERN 2 // External ESP8266 through UNO D1/D0
ccli8 16:f705110e6c04 17
ccli8 19:79f168fa9a8a 18 #ifndef ESP8266_AT_SEL
ccli8 19:79f168fa9a8a 19 #error("ESP8266_AT_SEL missing. Select ESP8266 on-board/external.")
ccli8 16:f705110e6c04 20 #endif
ccli8 16:f705110e6c04 21
cyliang 0:2198c8de64fe 22 #include "ESP8266Interface.h"
ccli8 16:f705110e6c04 23 # if ESP8266_AT_SEL == ESP8266_AT_ONBOARD
ccli8 16:f705110e6c04 24 # if TARGET_NUMAKER_IOT_M487
ccli8 16:f705110e6c04 25 DigitalOut esp_rst(PH_3, 0); // Simulate reset button pressed
ccli8 16:f705110e6c04 26 ESP8266Interface esp(PH_8, PH_9);
ccli8 16:f705110e6c04 27 # elif TARGET_NUMAKER_PFM_M2351
ccli8 16:f705110e6c04 28 DigitalIn esp_gpio0(PD_6); // Go boot mode by default
ccli8 16:f705110e6c04 29 // User can change to F/W update mode by short'ing ESP8266 GPIO0/GND
ccli8 16:f705110e6c04 30 // before power-on
ccli8 16:f705110e6c04 31 DigitalOut esp_pwr_off(PD_7, 1); // Disable power to on-board ESP8266
ccli8 16:f705110e6c04 32 ESP8266Interface esp(PD_1, PD_0);
ccli8 16:f705110e6c04 33 # endif
ccli8 16:f705110e6c04 34 # elif ESP8266_AT_SEL == ESP8266_AT_EXTERN
cyliang 0:2198c8de64fe 35 ESP8266Interface esp(D1, D0);
ccli8 16:f705110e6c04 36 # endif
cyliang 0:2198c8de64fe 37 #elif MBED_CONF_APP_NETWORK_INTERFACE == ETHERNET
cyliang 0:2198c8de64fe 38 #include "EthernetInterface.h"
cyliang 0:2198c8de64fe 39 EthernetInterface eth;
cyliang 0:2198c8de64fe 40 #elif MBED_CONF_APP_NETWORK_INTERFACE == MESH_LOWPAN_ND
cyliang 0:2198c8de64fe 41 #define MESH
cyliang 0:2198c8de64fe 42 #include "NanostackInterface.h"
cyliang 0:2198c8de64fe 43 LoWPANNDInterface mesh;
cyliang 0:2198c8de64fe 44 #elif MBED_CONF_APP_NETWORK_INTERFACE == MESH_THREAD
cyliang 0:2198c8de64fe 45 #define MESH
cyliang 0:2198c8de64fe 46 #include "NanostackInterface.h"
cyliang 0:2198c8de64fe 47 ThreadInterface mesh;
cyliang 0:2198c8de64fe 48 #endif
cyliang 0:2198c8de64fe 49
cyliang 0:2198c8de64fe 50 namespace {
cyliang 0:2198c8de64fe 51 // Test connection information
cyliang 0:2198c8de64fe 52 #ifndef LOCAL_LAN
ccli8 11:658411c71934 53 const char *HTTP_SERVER_NAME = "os.mbed.com";
cyliang 0:2198c8de64fe 54 #else
cyliang 0:2198c8de64fe 55 const char *HTTP_SERVER_NAME = "pt22_winserver2.nuvoton.com";
cyliang 0:2198c8de64fe 56 #endif
cyliang 0:2198c8de64fe 57
cyliang 0:2198c8de64fe 58 #ifndef LOCAL_LAN
cyliang 0:2198c8de64fe 59 const char *HTTP_SERVER_FILE_PATH = "/media/uploads/mbed_official/hello.txt";
cyliang 0:2198c8de64fe 60 const int HTTP_SERVER_PORT = 80;
cyliang 0:2198c8de64fe 61 #else
cyliang 0:2198c8de64fe 62 const char *HTTP_SERVER_FILE_PATH = "/examples/arm_mbed/hello.txt";
cyliang 0:2198c8de64fe 63 const int HTTP_SERVER_PORT = 8080;
cyliang 0:2198c8de64fe 64 #endif
cyliang 0:2198c8de64fe 65
cyliang 0:2198c8de64fe 66
cyliang 0:2198c8de64fe 67 const int RECV_BUFFER_SIZE = 512;
cyliang 0:2198c8de64fe 68
cyliang 0:2198c8de64fe 69 // Test related data
cyliang 0:2198c8de64fe 70 const char *HTTP_OK_STR = "200 OK";
cyliang 0:2198c8de64fe 71 const char *HTTP_HELLO_STR = "Hello world!";
cyliang 0:2198c8de64fe 72
cyliang 0:2198c8de64fe 73 // Test buffers
cyliang 0:2198c8de64fe 74 char buffer[RECV_BUFFER_SIZE] = {0};
cyliang 0:2198c8de64fe 75 }
cyliang 0:2198c8de64fe 76
cyliang 0:2198c8de64fe 77 bool find_substring(const char *first, const char *last, const char *s_first, const char *s_last) {
cyliang 0:2198c8de64fe 78 const char *f = std::search(first, last, s_first, s_last);
cyliang 0:2198c8de64fe 79 return (f != last);
cyliang 0:2198c8de64fe 80 }
cyliang 0:2198c8de64fe 81
cyliang 0:2198c8de64fe 82 int main() {
ccli8 16:f705110e6c04 83 #if MBED_CONF_APP_NETWORK_INTERFACE == WIFI
ccli8 16:f705110e6c04 84 # if ESP8266_AT_SEL == ESP8266_AT_ONBOARD
ccli8 16:f705110e6c04 85 # if TARGET_NUMAKER_IOT_M487
ccli8 16:f705110e6c04 86 wait_ms(5);
ccli8 16:f705110e6c04 87 esp_rst = 1; // Simulate reset button released
ccli8 16:f705110e6c04 88 wait_ms(5);
ccli8 16:f705110e6c04 89 # elif TARGET_NUMAKER_PFM_M2351
ccli8 16:f705110e6c04 90 wait_ms(50);
ccli8 16:f705110e6c04 91 esp_pwr_off = 0; // Turn on on-board ESP8266
ccli8 16:f705110e6c04 92 wait_ms(50);
ccli8 16:f705110e6c04 93 # endif
ccli8 16:f705110e6c04 94 # endif
ccli8 16:f705110e6c04 95 #endif
ccli8 16:f705110e6c04 96
ccli8 15:32a6a29ffcb3 97 #if MBED_HEAP_STATS_ENABLED
ccli8 15:32a6a29ffcb3 98 mbed_stats_heap_t heap_stats;
ccli8 15:32a6a29ffcb3 99 #endif
ccli8 15:32a6a29ffcb3 100
ccli8 19:79f168fa9a8a 101 printf("Start WiFi test \r\n");
cyliang 0:2198c8de64fe 102
cyliang 0:2198c8de64fe 103 bool result = true;
ccli8 15:32a6a29ffcb3 104 int rc = 0;
cyliang 0:2198c8de64fe 105
ccli8 19:79f168fa9a8a 106 printf("Start Connection ... \r\n");
cyliang 0:2198c8de64fe 107
cyliang 0:2198c8de64fe 108
cyliang 0:2198c8de64fe 109 NetworkInterface *network_interface = 0;
cyliang 0:2198c8de64fe 110
cyliang 0:2198c8de64fe 111 #if MBED_CONF_APP_NETWORK_INTERFACE == WIFI
ccli8 19:79f168fa9a8a 112 printf("\n\rUsing WiFi \r\n");
ccli8 19:79f168fa9a8a 113 printf("\n\rConnecting to WiFi..\r\n");
cyliang 13:be6ec74c5987 114 rc = esp.connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, NSAPI_SECURITY_WPA_WPA2);
cyliang 0:2198c8de64fe 115 network_interface = &esp;
cyliang 0:2198c8de64fe 116 #elif MBED_CONF_APP_NETWORK_INTERFACE == ETHERNET
ccli8 19:79f168fa9a8a 117 printf("Using Ethernet\r\n");
cyliang 0:2198c8de64fe 118 rc = eth.connect();
cyliang 0:2198c8de64fe 119 network_interface = &eth;
cyliang 0:2198c8de64fe 120 #endif
cyliang 0:2198c8de64fe 121 #ifdef MESH
ccli8 19:79f168fa9a8a 122 printf("Using Mesh\r\n");
ccli8 19:79f168fa9a8a 123 printf("\n\rConnecting to Mesh..\r\n");
cyliang 0:2198c8de64fe 124 rc = mesh.connect();
cyliang 0:2198c8de64fe 125 network_interface = &mesh;
cyliang 0:2198c8de64fe 126 #endif
cyliang 0:2198c8de64fe 127
cyliang 0:2198c8de64fe 128 if(rc == 0) {
ccli8 19:79f168fa9a8a 129 printf("\n\rConnected to Network successfully\r\n");
cyliang 0:2198c8de64fe 130 } else {
ccli8 19:79f168fa9a8a 131 printf("\n\rConnection to Network Failed %d! Exiting application....\r\n", rc);
cyliang 0:2198c8de64fe 132 return 0;
cyliang 0:2198c8de64fe 133 }
cyliang 0:2198c8de64fe 134
ccli8 19:79f168fa9a8a 135 printf("TCP client IP Address is %s\r\n", network_interface->get_ip_address());
cyliang 0:2198c8de64fe 136
cyliang 0:2198c8de64fe 137 TCPSocket sock(network_interface);
ccli8 19:79f168fa9a8a 138 printf(" HTTP Connection ... \r\n");
cyliang 0:2198c8de64fe 139 if (sock.connect(HTTP_SERVER_NAME, HTTP_SERVER_PORT) == 0) {
ccli8 19:79f168fa9a8a 140 printf("HTTP: Connected to %s:%d\r\n", HTTP_SERVER_NAME, HTTP_SERVER_PORT);
cyliang 0:2198c8de64fe 141
cyliang 0:2198c8de64fe 142 // We are constructing GET command like this:
cyliang 0:2198c8de64fe 143 // GET http://developer.mbed.org/media/uploads/mbed_official/hello.txt HTTP/1.0\n\n
cyliang 0:2198c8de64fe 144 strcpy(buffer, "GET http://");
cyliang 0:2198c8de64fe 145 strcat(buffer, HTTP_SERVER_NAME);
cyliang 0:2198c8de64fe 146 strcat(buffer, HTTP_SERVER_FILE_PATH);
cyliang 0:2198c8de64fe 147 strcat(buffer, " HTTP/1.0\n\n");
cyliang 0:2198c8de64fe 148 // Send GET command
cyliang 0:2198c8de64fe 149 sock.send(buffer, strlen(buffer));
cyliang 0:2198c8de64fe 150
cyliang 0:2198c8de64fe 151 // Server will respond with HTTP GET's success code
cyliang 0:2198c8de64fe 152 const int ret = sock.recv(buffer, sizeof(buffer) - 1);
cyliang 0:2198c8de64fe 153 buffer[ret] = '\0';
cyliang 0:2198c8de64fe 154
cyliang 0:2198c8de64fe 155 // Find 200 OK HTTP status in reply
cyliang 0:2198c8de64fe 156 bool found_200_ok = find_substring(buffer, buffer + ret, HTTP_OK_STR, HTTP_OK_STR + strlen(HTTP_OK_STR));
cyliang 0:2198c8de64fe 157 // Find "Hello World!" string in reply
cyliang 0:2198c8de64fe 158 bool found_hello = find_substring(buffer, buffer + ret, HTTP_HELLO_STR, HTTP_HELLO_STR + strlen(HTTP_HELLO_STR));
cyliang 0:2198c8de64fe 159
cyliang 0:2198c8de64fe 160 if (!found_200_ok) result = false;
cyliang 0:2198c8de64fe 161 if (!found_hello) result = false;
cyliang 0:2198c8de64fe 162
ccli8 19:79f168fa9a8a 163 printf("HTTP: Received %d chars from server\r\n", ret);
ccli8 19:79f168fa9a8a 164 printf("HTTP: Received 200 OK status ... %s\r\n", found_200_ok ? "[OK]" : "[FAIL]");
ccli8 19:79f168fa9a8a 165 printf("HTTP: Received '%s' status ... %s\r\n", HTTP_HELLO_STR, found_hello ? "[OK]" : "[FAIL]");
ccli8 19:79f168fa9a8a 166 printf("HTTP: Received massage:\r\n\r\n");
ccli8 19:79f168fa9a8a 167 printf("%s", buffer);
cyliang 0:2198c8de64fe 168 }
cyliang 0:2198c8de64fe 169
ccli8 15:32a6a29ffcb3 170 #if MBED_HEAP_STATS_ENABLED
ccli8 15:32a6a29ffcb3 171 mbed_stats_heap_get(&heap_stats);
ccli8 15:32a6a29ffcb3 172 printf("Current heap: %lu\r\n", heap_stats.current_size);
ccli8 15:32a6a29ffcb3 173 printf("Max heap size: %lu\r\n", heap_stats.max_size);
cyliang 0:2198c8de64fe 174 #endif
ccli8 15:32a6a29ffcb3 175
ccli8 19:79f168fa9a8a 176 printf(" Close socket & disconnect ... \r\n");
cyliang 0:2198c8de64fe 177 sock.close();
cyliang 0:2198c8de64fe 178
cyliang 0:2198c8de64fe 179 #if MBED_CONF_APP_NETWORK_INTERFACE == WIFI
ccli8 15:32a6a29ffcb3 180 esp.disconnect();
cyliang 0:2198c8de64fe 181 #elif MBED_CONF_APP_NETWORK_INTERFACE == ETHERNET
ccli8 15:32a6a29ffcb3 182 eth.disconnect();
cyliang 0:2198c8de64fe 183 #elif MBED_CONF_APP_NETWORK_INTERFACE == MESH_LOWPAN_ND
ccli8 15:32a6a29ffcb3 184 mesh.disconnect();
cyliang 0:2198c8de64fe 185 #elif MBED_CONF_APP_NETWORK_INTERFACE == MESH_THREAD
ccli8 15:32a6a29ffcb3 186 mesh.disconnect();
cyliang 0:2198c8de64fe 187 #endif
ccli8 19:79f168fa9a8a 188 printf(" End \r\n");
cyliang 0:2198c8de64fe 189 }