Hi, I have run sample serial examples like* serialblaster*, *serialrx* but I have one doubt is that, when we give devpath as* /dev/ttyS0* , we are able to connect and communicate with the nsh console.
Is it really a* uart/usart communication* happening or are we just using virtual com port to communicate? Means in these sample examples, *no uart send or receive function* used like in* nuttx/drivers/serial* folder they have mentioned? Only *read/write* file function is used. Is it possible to use those defined functions in app side from *nuttx/drivers/serial?* Please clear my doubts. Regards, Rushikesh Ghatkar On Tue, Aug 31, 2021 at 6:34 PM Alan Carvalho de Assis <acas...@gmail.com> wrote: > You need to enable: USARTx peripheral, setup your Driver -> Serial to > correct baudrate, etc and then you can run the serialrx example. > > BUT you need to setup CONFIG_EXAMPLES_SERIALRX_DEVPATH to the right > port, i.e.: /dev/ttyS1 > > Before mastering NuttX it is important that you know Linux, otherwise > you will run in circles. > > BR, > > Alan > > On 8/31/21, rushi ghatkar <rushighatka...@gmail.com> wrote: > > Hi Alan Sir, > > > > Thanks for your reply. > > > > The serial driver already exists for STM32H7. Are we willing to > > exchange data over serial port? > > -> Yes sir. I want to transmit and receive data using uart. > > > > Just do the same thing you do on Linux: open(), tcflush(), tcsetatt > > -> these functions we have to use while creating our own driver??? > > > > > > I was trying to run a sample example of a serial driver for uart. But it > > gives errors. Could you please tell me how to get it working? > > > > > > > > Thanks & Regards, > > Rushikesh Ghatkar > > > > > > > > > > > > On Mon, Aug 30, 2021 at 6:43 PM Alan Carvalho de Assis < > acas...@gmail.com> > > wrote: > > > >> Hi Rushikesh, > >> > >> The serial driver already exists for STM32H7. Are we willing to > >> exchange data over serial port? > >> > >> Just do the same thing you do on Linux: open(), tcflush(), tcsetattr(), > >> etc. > >> > >> You need to use /dev/ttyS1..N the /dev/ttyACM0 is for USB/Serial > example. > >> > >> BR, > >> > >> Alan > >> > >> On 8/30/21, rushi ghatkar <rushighatka...@gmail.com> wrote: > >> > Hi, > >> > > >> > I am trying to create my own uart serial driver which includes > transmit > >> and > >> > receive data . > >> > > >> > For that i was trying to understand a sample example which is given > >> > already. For this example given file are mentioned below, > >> > In nuttx folder, > >> > 1. nuttx/drivers/serial.c > >> > 2. nuttx/include/nuttx/serial/serial.h > >> > But in *nuttx/boards/arm/stm32h7/nucleo-h743zi2/src* no file is > >> > present > >> > for the serial driver. So here do we have to create a file or the > >> > driver > >> > will work as it is? > >> > > >> > In app folder, > >> > apps/examples/serialrx/serialrx_main.c devpath given like this > >> > */dev/ttyS0 > >> > , *what does this mean? as per my board device port is ACM0, so > should > >> > i > >> > include */dev/ttyACM0* instead of */dev/ttyS0.* > >> > > >> > In menuconfig, i have selected *serial RX example*, > >> > > >> > How to make it run, does anyone please tell me how this example is > >> working. > >> > > >> > > >> > Thanks & Regards, > >> > Rushikesh Ghatkar > >> > > >> > > >
