I am working on the DS18B20 temp sensor implementation. Code is running well. But have a question related to the "conversion time".
Chip ds18b20 datasheet states I should wait the given time (hundreds of ms) after issuing the "start_conversion" command, before I can go on reading the data registers (to get the temperature).
What I saw is, and here is my question, I do not HAVE to wait. My code runs using both 750ms or 0ms as a wait time. Data register have some values and I can get them without problems.
So how it works? Have I wait or not. What's the data in the data register if the wait time is shorter then required ?
My personal filling is that I do not have to wait, I just CAN wait for THIS conversion. But I can read register any time but will just get the latest stored temperature. Could be not the one I asked for starting conversion few clock cycles before ...