Re: Running Hello World for Dragino-LSN50 on B-L072Z-LRWAN1 Dicovery Board
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.
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