User's Manual

AI7688H User Manual
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Copyright@2016 AcSiP
#define SERIAL_CLOCK_DIVISOR 16
#define CONFIG_BOOTDELAY 1 /* autoboot after 5 seconds */
#define CONFIG_BAUDRATE 57600
#define CONFIG_SERVERIP 10.10.10.3
#define CONFIG_IPADDR 10.10.10.123
Change this:
#define CONFIG_BAUDRATE 57600
to this (change the baudrate from 57600 to 115200 as an example):
#define CONFIG_BAUDRATE 115200
This will then change the bootloader console baudrate from 57600 to 115200
# Now build the bootloader and upload it to the board
3.8 Change Kernel Console
If you want to use another UART port as the kernel console, you can follow the steps below
to adjust the configuration.
# modify the file target/linux/ramips/dts/LINKIT7688.dts and chang
chosen {
bootargs = "console=ttyS2,57600";
};
to this (e.g. change to UART0 and 115200 baudrate):
chosen {
bootargs = "console=ttyS0,115200";
};
This will then change the kernel console from UART2 to UART0 and its baudrate from 57600
to 115200.
Now build the firmware and upload it to the board through the Web UI or the USB drive.