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test.cpp

uint32_t max31855::memory_read(void)
{
    uint32_t mask = 0x80000000;
    uint32_t data = 0;

    digitalWrite(_cs,LOW);
    do {
        digitalWrite(_sclk, HIGH);
        if (digitalRead(_so)) {
            data |= mask;
        }
        digitalWrite(_sclk,LOW);
        mask >>= 1;
    } while(mask);
    digitalWrite(_cs, HIGH);
    return data;
}