Merge pull request #24 from thodob/ultrasound_wifi

Remove Chunking for WiFi Data Transmission

Author: vladysor

docs/Library/Others.md

@@ -307,6 +307,10 @@ Second figure shows measurements with a flat object placed near the board. Here,
 
 Utilizes only one microphone. The example is similar to [Basic_UltraSound]({% link Library/Others.md %}#basic_ultrasound), but uses WiFi as communication medium instead of Serial.
 
+**Step 0**{: .text-blue-000} : Connect an antenna to the Arduino GIGA R1 (provided in the bundle)
+
+<img src="{{site.baseurl}}/assets/images/arduino-antenna-connection.png" alt="drawing" width="507"/>
+
 **Step 1**{: .text-blue-000} : Include SensEdu and WiFi libraries.
 
 ```c

docs/assets/images/arduino-antenna-connection.png

@@ -139,12 +139,9 @@ void handle_error() {
     digitalWrite(error_led, LOW);
 }
 
-// send data in 32 byte chunks
+// send data in a single chunk
 void wifi_send_array(const uint8_t* data, size_t size, WiFiClient client) {
-    const size_t chunk_size = 32;
-    for (uint32_t i = 0; i < size/chunk_size; i++) {
-		client.write(data + chunk_size * i, chunk_size);
-	}
+    client.write(data, size);
 }
 
 void printWifiStatus() {

docs/assets/images/src/arduino-antenna-connection.xcf

@@ -49,14 +49,9 @@
 
 %% functions
 function data = read_data(arduino_server, data_length)
-    total_byte_length = data_length * 2; % 2 bytes per sample
-    serial_rx_data = zeros(1, total_byte_length);
-
-    for i = 1:(total_byte_length/32) % 32 byte chunk size
-        serial_rx_data((32*i - 31):(32*i)) = read(arduino_server, 32, 'uint8');
-    end
-    
-    data = double(typecast(uint8(serial_rx_data), 'uint16'));
+   total_byte_length = data_length * 2; % 2 bytes per sample
+   serial_rx_data = read(arduino_server, total_byte_length, 'uint8');
+   data = double(typecast(uint8(serial_rx_data), 'uint16'));
 end
 
 function plot_data(data)