main.cpp

00001 #include "mbed.h"
00002 #include "ESP8266Interface.h"
00003 #include "UDPSocket.h"
00004 #include "greentea-client/test_env.h"
00005 #include "unity/unity.h"
00006 #include "utest.h"
00007 
00008 using namespace utest::v1;
00009 
00010 
00011 #ifndef MBED_CFG_UDP_CLIENT_ECHO_BUFFER_SIZE
00012 #define MBED_CFG_UDP_CLIENT_ECHO_BUFFER_SIZE 64
00013 #endif
00014 
00015 #ifndef MBED_CFG_UDP_CLIENT_ECHO_TIMEOUT
00016 #define MBED_CFG_UDP_CLIENT_ECHO_TIMEOUT 500
00017 #endif
00018 
00019 #ifndef MBED_CFG_ESP8266_TX
00020 #define MBED_CFG_ESP8266_TX D1
00021 #endif
00022 
00023 #ifndef MBED_CFG_ESP8266_RX
00024 #define MBED_CFG_ESP8266_RX D0
00025 #endif
00026 
00027 #ifndef MBED_CFG_ESP8266_DEBUG
00028 #define MBED_CFG_ESP8266_DEBUG false
00029 #endif
00030 
00031 #define STRINGIZE(x) STRINGIZE2(x)
00032 #define STRINGIZE2(x) #x
00033 
00034 
00035 namespace {
00036     char tx_buffer[MBED_CFG_UDP_CLIENT_ECHO_BUFFER_SIZE] = {0};
00037     char rx_buffer[MBED_CFG_UDP_CLIENT_ECHO_BUFFER_SIZE] = {0};
00038     const char ASCII_MAX = '~' - ' ';
00039     const int ECHO_LOOPS = 16;
00040     char uuid[48] = {0};
00041 }
00042 
00043 void prep_buffer(char *uuid, char *tx_buffer, size_t tx_size) {
00044     size_t i = 0;
00045 
00046     memcpy(tx_buffer, uuid, strlen(uuid));
00047     i += strlen(uuid);
00048 
00049     tx_buffer[i++] = ' ';
00050 
00051     for (; i<tx_size; ++i) {
00052         tx_buffer[i] = (rand() % 10) + '0';
00053     }
00054 }
00055 
00056 void test_udp_echo() {
00057     ESP8266Interface net(MBED_CFG_ESP8266_TX, MBED_CFG_ESP8266_RX, MBED_CFG_ESP8266_DEBUG);
00058 
00059     int err = net.connect(STRINGIZE(MBED_CFG_ESP8266_SSID), STRINGIZE(MBED_CFG_ESP8266_PASS));
00060     TEST_ASSERT_EQUAL(0, err);
00061 
00062     if (err) {
00063         printf("MBED: failed to connect with an error of %d\r\n", err);
00064         TEST_ASSERT_EQUAL(0, err);
00065     }
00066 
00067     printf("UDP client IP Address is %s\n", net.get_ip_address());
00068 
00069     greentea_send_kv("target_ip", net.get_ip_address());
00070 
00071     char recv_key[] = "host_port";
00072     char ipbuf[60] = {0};
00073     char portbuf[16] = {0};
00074     unsigned int port = 0;
00075 
00076     UDPSocket sock;
00077     sock.open(&net);
00078     sock.set_timeout(MBED_CFG_UDP_CLIENT_ECHO_TIMEOUT);
00079 
00080     greentea_send_kv("host_ip", " ");
00081     greentea_parse_kv(recv_key, ipbuf, sizeof(recv_key), sizeof(ipbuf));
00082 
00083     greentea_send_kv("host_port", " ");
00084     greentea_parse_kv(recv_key, portbuf, sizeof(recv_key), sizeof(ipbuf));
00085     sscanf(portbuf, "%u", &port);
00086 
00087     printf("MBED: UDP Server IP address received: %s:%d \n", ipbuf, port);
00088     SocketAddress udp_addr(ipbuf, port);
00089 
00090     int success = 0;
00091     for (int i = 0; success < ECHO_LOOPS; i++) {
00092         prep_buffer(uuid, tx_buffer, sizeof(tx_buffer));
00093         const int ret = sock.sendto(udp_addr, tx_buffer, sizeof(tx_buffer));
00094         if (ret >= 0) {
00095             printf("[%02d] sent %d bytes - %.*s  \n", i, ret, ret, tx_buffer);
00096         } else {
00097             printf("[%02d] Network error %d\n", i, ret);
00098             continue;
00099         }
00100 
00101         SocketAddress temp_addr;
00102         const int n = sock.recvfrom(&temp_addr, rx_buffer, sizeof(rx_buffer));
00103         if (n >= 0) {
00104             printf("[%02d] recv %d bytes - %.*s  \n", i, n, n, tx_buffer);
00105         } else {
00106             printf("[%02d] Network error %d\n", i, n);
00107             continue;
00108         }
00109 
00110         if ((temp_addr == udp_addr &&
00111              n == sizeof(tx_buffer) &&
00112              memcmp(rx_buffer, tx_buffer, sizeof(rx_buffer)) == 0)) {
00113             success += 1;
00114 
00115             printf("[%02d] success #%d\n", i, success);
00116             continue;
00117         }
00118 
00119         // failed, clean out any remaining bad packets
00120         sock.set_timeout(0);
00121         while (true) {
00122             err = sock.recvfrom(NULL, NULL, 0);
00123             if (err == NSAPI_ERROR_WOULD_BLOCK) {
00124                 break;
00125             }
00126         }
00127         sock.set_timeout(MBED_CFG_UDP_CLIENT_ECHO_TIMEOUT);
00128     }
00129 
00130     sock.close();
00131     net.disconnect();
00132     TEST_ASSERT_EQUAL(ECHO_LOOPS, success);
00133 }
00134 
00135 
00136 // Test setup
00137 utest::v1::status_t test_setup(const size_t number_of_cases) {
00138     GREENTEA_SETUP(120, "udp_echo");
00139     return verbose_test_setup_handler(number_of_cases);
00140 }
00141 
00142 Case cases[] = {
00143     Case("UDP echo", test_udp_echo),
00144 };
00145 
00146 Specification specification(test_setup, cases);
00147 
00148 int main() {
00149     return !Harness::run(specification);
00150 }
00151