o Renaming arduino to assignments.

1 files changed, 71 insertions, 0 deletions

diff --git a/assignments/client1/client1.ino b/assignments/client1/client1.ino
new file mode 100644
index 0000000..39eabfe
--- /dev/null
+++ b/assignments/client1/client1.ino
@@ -0,0 +1,71 @@
+#include <ESP8266WiFi.h>
+#include <WiFiUdp.h>
+
+#include "config.h"
+
+WiFiUDP Udp;
+unsigned int localUdpPort = 5006;
+IPAddress host_ip(192, 168, 10, 151);
+unsigned int host_port = 5005;
+
+const int out_buf_len_start = 100;
+const int out_buf_len_increment = 100;
+const int out_buf_len_max = 2200;
+
+char buf[out_buf_len_max];
+int out_buf_len;
+
+static const char alphabet[] = "abcdefghijklmnopqrstuvxyz";
+
+unsigned long time_start, time_end;
+
+void setup() {
+  Serial.begin(115200);
+
+  Serial.printf("Connecting to %s ", wifi_ssid);
+  WiFi.begin(wifi_ssid, wifi_password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println(" connected");
+
+  Udp.begin(localUdpPort);
+  time_start = millis();
+  out_buf_len = out_buf_len_start;
+}
+
+void loop() {
+
+  if (millis() > (time_start + 1000)) {
+    for (int i = 0; i < out_buf_len; i++) {
+      buf[i] = alphabet[i % sizeof(alphabet) - 1];
+    }
+    out_buf_len += out_buf_len_increment;
+    if (out_buf_len > out_buf_len_max) {
+      out_buf_len = out_buf_len_start;
+    }
+    Serial.printf("Sending %d bytes to %s:%d\n", out_buf_len, host_ip.toString().c_str(), host_port);
+    Udp.beginPacket(host_ip, host_port);
+    Udp.write(buf, out_buf_len);
+    time_start = millis();
+    auto ok = Udp.endPacket();
+
+    if (!ok) {
+      Serial.printf("Could not send packet with size %d\n", out_buf_len);
+    }
+  }
+
+  int len = Udp.parsePacket();
+  if (len) {
+    time_end = millis();
+    Serial.printf("RX %s:%d: size=%d\n", Udp.remoteIP().toString().c_str(), Udp.remotePort(), len);
+    int len = Udp.read(buf, sizeof(buf));
+    Serial.printf("len=%d\n");
+    if (len > 0) {
+      buf[len] = 0;
+    }
+    Serial.printf("RTT: %d ms. Payload:%s\n", int(time_end - time_start), buf);
+  }
+}
+