Скачать или смотреть Relative Humidity Measurement

The ambient humidity and temperature are measured with the SHT11 sensor by Sensirion. The protocol used to transfer data from the chip to the microcontroller is fully defined by Sensirion so that the whole protocol needed to be software-implemented. A transmission start sequence needs first to be sent to the sensor to indicate that a command is about to be issued. Then a command asking a temperature or humidity measurement is issued. Two bytes are clocked from the sensor to the microcontroller with ACK acknowledgement in between. A CRC check is performed on the third byte. Finally the real temperature or humidity is inferred from a formula using the received data (crf. SHT11 datasheet)
https://github.com/PeacocksFly/PIC18-...