STM32 I2C HAL & LL library for the 1-Wire DS18B20
STM32 I2C HAL & LL library for the 1-Wire DS18B20
These digital sensors provide 9 to 12-bit (configurable) temperature readings and High/Low temperature alarm
In parasite mode the sensor derives its power from the data line. Only two wires, Data and GND are required.
This library need to used DwtDelay library as some waiting time need to be in microsecond
Tested on STM32H750 with 2x DS18B20 with alarm trigger
Data are store in data structure
Comment/Suggestion are highly welcome!
In DS18B20_Read, this line is a bug and causes 600ms delay without doing anything.
while(!OneWire_ReadBit(OW)) {};
Removing the line and temperature still read normally, and it takes only ~25ms. If you want to wait until line is released, I think reading GPIO input state is enough.
how can i display the temperature value via uart on stm32l010k8t6 please help thanks
For using parasite mode, the mosfet needs to turn on or off by the mcu. But I do not see GPIO pin is defined and relevant code.
So parasite mode is not supported?
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