[U-Boot] STM32F746 Discovery - No serial output?

[Patrice CHOTARD]

Another update you need to do, is to change the default uart in device 
tree. By default uart1 is used, using the STLink usb port.

To use the UART6 output on arduino UNO connector, applied the attached 
patch.

Patrice

On 07/25/2017 02:20 PM, Patrice CHOTARD wrote:
> Hi Francois
> 
> By default, stm32f746-disco is configured in SPL mode, that's what
> explain you don't get any output in the console
> 
> To come back in non SPL mode, you can use the attached patch.
> 
> Patrice
> 
> On 07/21/2017 10:40 PM, Francois Dugast wrote:
>> Hi,
>>
>> I am trying to run the master on a STM32F746 Discovery board [1] by using
>> stm32f746-disco_defconfig. It was built with gcc-arm-none-eabi-5_4-2016q3
>> [2] and flashed with OpenOCD [3]. A USB-serial adapter is connected to
>> USART6_RX and USART6_TX (pins D0 and D1 of the Arduino connector) and
>> configured for 115200 8N1. No output coming out through the serial
>> interface. It is unlikely to be a hardware issue as output is coming out
>> normally this way when using the U-Boot repository from Emcraft.
>>
>> I do not know what I am doing wrong, can you help me out?
>>
>> Cheers,
>> Francois
>>
>> [1] http://www.st.com/en/evaluation-tools/32f746gdiscovery.html
>> [2] https://launchpad.net/gcc-arm-embedded
>> [3] http://openocd.org
>> [4] https://github.com/EmcraftSystems/u-boot
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>>
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