Hi Francois,
-----Original Message----- From: U-Boot [mailto:u-boot-bounces@lists.denx.de] On Behalf Of Francois Dugast Sent: Friday, July 21, 2017 1:41 PM To: u-boot@lists.denx.de Subject: [U-Boot] STM32F746 Discovery - No serial output?
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.
There is no need of USB-serial adaptor with this board. USART1 can be used using stlink usb port which is being configured by u-boot master.
Here is the usart1 dts pin config (check out arch/arm/dts/stm32f746-disco.dts):
usart1_pins_a: usart1@0 { pins1 { pinmux = <STM32F746_PA9_FUNC_USART1_TX>; bias-disable; drive-push-pull; slew-rate = <2>; }; pins2 { pinmux = <STM32F746_PB7_FUNC_USART1_RX>; bias-disable; }; };
Cheers, Vikas
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 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot