Hi Ben, There is an example of 1-Wire for BluePill (stm32f104-minimum) using the DS18B20 temperature sensor.
All you need to do it: $ ./tools/configure.sh stm32f103-minimum:sensors $ make menuconfig Enable CONFIG_TESTING_SENSORTEST $ make Flash the firmware nuttx.bin in your board Wire the sensor as explained at boards/arm/stm32/stm32f103-minimum/README.txt It suggests to use a 4k7 resistor, but I used with 10k resistor and worked fine. Any pull-up resistor from 1k to 10k (maybe even higher) should work. You can test this way: nsh> ls /dev/sensor /dev/sensor: humi0 temp0 temp1 nsh> sensortest temp1 SensorTest: Test /dev/sensor/temp1 with interval(1000000us), latency(0us) temp1: timestamp:18230000 value:23.25 temp1: timestamp:19030000 value:23.19 temp1: timestamp:19810000 value:23.19 temp1: timestamp:20590000 value:23.19 temp1: timestamp:21370000 value:23.19 temp1: timestamp:22150000 value:23.19 temp1: timestamp:22930000 value:23.19 temp1: timestamp:23710000 value:23.13 BR, Alan On 6/19/21, disruptivesolution...@gmail.com <disruptivesolution...@gmail.com> wrote: > Hello, > > > > I see some info searching Google about the 1-Wire (through USART) > implementation for NuttX. It seems there is a driver for it for use through > U(S)ART. > > > > Did someone already have implemented STM32 for it? src/stm32_1wire.c (or > something) how I could initialize this driver? > > > > I appreciate any help you can provide. > > Ben > >
