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After setting everything in .dts and defconfig, Hello world finally started working.
Thanks for assistance. Do you think its worth creating pull request fwith my changes?
21 сент. 2018 г. 11:11 ПП | От: Erwan Gouriou <erwan.gouriou@...> | Сообщение:
В Чтв, 20/09/2018 в 23:43 +0200, Erwan Gouriou пишет:
> Looking to B-L072Z-LRWAN1 user manual, it seems that you can get ST-
> Link VCP using USART2,
> Did you changed the console settings to match this configuration ?
In order to answer your question I've inspected the
boards/arm/nucleo_l073rz/nucleo_l073rz_defconfig which has a Virtual
COM Port. And I didn't find any UART-specific configuration
options except for CONFIG_SERIAL, CONFIG_CONSOLE and
CONFIG_UART_CONSOLE that should be specified for a VCP to work
You don't have to care about VCP, this is internal to ST-Link chip, just make sure that console is set to uart2(.DTS) and enabled (_defconfig).
Could you point out which options do I need to change/specify?
> Then, fortunately, both boards share the same pin mapping on this
> so on this point you should be fine.
> Last, one point to check would be the clock settings;
> Dragino uses HSI driven PLL, does this fit with B-L072Z-LRWAN1?
Yes, the B-L072Z-LRWAN1 uses the same HSI 16M clock source, that's what
Great, you should be fine then!
> On Thu, 20 Sep 2018 at 22:16, Aleksandr Makarov <seems.deviant@gmail.
> com> wrote:
> > Hello,
> > I am trying to run Hello World application built for Dragino-LSN50
> > on a
> > B-L072Z-LRWAN1 Dicovery Board. Those two boards both are SM32L0-
> > based
> > and share exactly the same MCU model - SMT32L072CZY.
> > The build process and device flashing work fine, however I can't
> > see a
> > "Hello World!" print on a COM terminal after a reset.
> > A working USART port is the only peripheral I care for now. The
> > USART
> > pin configuration for Dragino LSN50 board should be suitable for
> > L072Z-
> > LRWAN1 as well, though it is not working.
> > Please advice.