Dear Michael, Yep didn’t got any prints. So tried a hack. a) Booted using uart 2 b) set the GPACON c) Copied the config from 0x12c20000 to 0x12c30000 d)tried to write a char 0x41 (A) on 0x12c20020 0x12c30020, I got output on UART2 but not on UART3.
We would like to use both uarts. Have you used UART3, did the boot to UART3 worked for you ? So you see any problem with any of our steps listed in this / pref mail.
Thanks armdev team
On 16-Mar-2014, at 2:56 pm, Michael Trimarchi michael@amarulasolutions.com wrote:
Hi
On Fri, Mar 14, 2014 at 9:04 AM, armdev armdev.ftm@gmail.com wrote:
Hi,
We are trying to enable the UART3 on COM18 pins of arndale board. The UART3 RXD and TXD are on pins 2 and 4 which as per the base board specification is connected as
XuRXD3 : UART_3_RXD/GPA1[4] : 2 XuTXD3 : UART_3_TXD/GPA1[5] : 4
As per the public reference manual of exynos 5250, there is a register GPACON (0x1140_0000) Setting GPACON |= 0x0010_0000 should enable the pins, but I am not able to see any output on UART3.
Can you please suggest what is the right procedure
Did you change the board console output ;)?
Michael
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