Reading Bytes from Arduino to MATLAB (2024)

#include <SPI.h>

const int CS_SiPM_pot = 34;

void setup() {

// put your setup code here, to run once:

Serial.begin(115200); //Starting

delay(1000);

SPI.begin();

pinMode(CS_SiPM_pot, OUTPUT);

}

void loop() {

for (int d_pot2 = 55; d_pot2 <= 55; d_pot2 = d_pot2 + 1) //57

{

digitalWrite(CS_SiPM_pot, LOW); //LOW

delay(10); //10

SPI.transfer(d_pot2);

digitalWrite(CS_SiPM_pot, HIGH);

// put your main code here, to run repeatedly:

float newTmp[4] = { 01.00, 02.00, 03.00, 04.00 };

for (int i = 0; i < 4; i++) {

byte *byteData = (byte *)&newTmp[i];

Serial.write(byteData, sizeof(float)); // Send each float as 4 bytes

delay(10);

}

}

}

esp = serialport('COM5',152000);

%%

flush(esp)

% Read 16 bytes of data (4 floats * 4 bytes per float)

numBytes = 16;

data = read(esp, numBytes, 'uint8');

% Convert each 4-byte sequence to a float

float1 = typecast(data(1:4)), 'single');

float2 = typecast(data(5:8), 'single');

float3 = typecast(data(9:12), 'single');

float4 = typecast(data(13:16), 'single');

disp([float1, float2, float3, float4]);

% Convert the bytes back to float values

floatValues = typecast(uint8(data), 'single');

% Display the result

disp('Float values:');

disp(floatValues);

disp('Raw bytes received:');

disp(data); % Print the raw bytes

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