STM32 UART #7 || One-Wire Protocol || Interface DS18B20

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[@user-jc9xd4rf9x]

Hello Your Videos is clearly explained and i watched mostly i have a request can you please do a series on OV5640 camera interfacing with Local PC GUI or with TFT display

[@bayramgoktepe2575]

thank you for everything

[@jorgemaker4622]

It would be very interesting if you publish a video explaining how to sue the STM32 to implement LIN Bus communications that is acheived adding a LIN trasnceiver attached to the UART

[@ControllersTech]

Yes yes coming next.

[@mieteksuchar6662]

Not related to UART, but how about creating a music tempo (BPM) detection algorithm?

[@LubosMedovarsky]

Sooo... when can we expect DHT11/22 coverage? 😉 Just kidding, and well done, thank you!

[@erenakcay7010]

hello,thank you for this video.I have to use more than one DS18B20 sensor.How can ı do it can you explain please

[@ControllersTech]

Search for "multiple ds18b20" on this channel.

[@xy3986]

Hello and thank you for this video (and all the helpful other ones ;-)
I managed it to run your example on a Nucelo-F429 => it works with one single issue: the interrupt doesn't work !? => instead of this I simply used a HAL_Delay(1)
so far so god
I also tried it with a Nucleo-H743 => the "presence" is recognised perfectly...
...the Write-Command also seems to work...
...but in the buffer-array of the Read-Command always bit "0" gets the value "0x00" (not 0xFF or 0xFC as it should be) and also the last bit is sometimes a "0"
(by the way: my Logic-Analyzer (DS-View) shows the correct information = only 0xFF or 0xFC for all 8 bits)
=> so it seems that the STM32H7 reads the correct output signals from DS18B20 in a wrong way => ??
As I found out so far, it could be a problem with the content of the "USART_BRR register" ??
...or the prescaler ( thanks very much

[@woldecosgrove]

ya i got the same problem too, i try on F072 nucleo board, my logic analyser show all 0xff... and on H723 same Oxff too...

[@woldecosgrove]

@ controllerTech could you advise...

[@Catta2001]

Hi, this sensor use a “parasite power” this dosent mean that you have to use the Tx wire as a Vcc wire too?

[@ControllersTech]

No it doesn't

[@bayramgoktepe2575]

should be usart global inturrupt enable

[@bayramgoktepe2575]

for stm32f103c8t6 72mhz clock code ds18b20 the code should be like below read ds18b20 HAL_UART_Transmit_DMA(&huart3, buffer, 8);
HAL_UART_Receive_DMA(&huart3, RxData, 8);
//HAL_Delay(1);
for (int i=0; i