readBytes()

size_t fl::SerialPort::readBytes	(	u8 *	buffer,
		size_t	length )

Read fixed number of bytes into buffer.

Parameters

buffer	Pointer to destination buffer
length	Number of bytes to read

Returns

Number of bytes actually read

Reads up to length bytes from serial. May return fewer bytes if timeout occurs.

Definition at line 176 of file serial.cpp.hpp.

                                                                   {
    if (!buffer || length == 0) {
        return 0;
    }
 
    size_t count = 0;
    u32 startTime = fl::millis();
 
    while (count < length && (fl::millis() - startTime < mTimeoutMs)) {
        if (available() > 0) {
            int c = read();
            if (c != -1) {
                buffer[count++] = static_cast<u8>(c);
                startTime = fl::millis();  // Reset timeout on successful read
            }
        }
    }
 
    return count;
}

References fl::available(), fl::FL_NO_EXCEPT, length(), fl::millis(), mTimeoutMs, and fl::read().

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