STK1000/RS232 connectors
From AVRFreaks Wiki
RS232 interfaces can be used to connect a PC to STK1000. This is particularly useful when communicating with the U-boot boot loader and Linux when these run on STK1000.
Two RS232 connectors are available to the user. A dual RS232 level converter provide proper voltage levels for compliance to the RS232 standard. Three jumper settings are used to select where UART signals are used.
Signals
The default settings when communicating with U-boot and Linux are listed below. U-boot is programmed onto the external flash by default. The Linux distribution will normally reside on a SD memory card.
Setting | Value |
---|---|
Baud rate | 115200 |
Data | 8 bit |
Parity | none |
Stop | 1 bit |
Flow control | none |
Block diagram
The block diagram shows jumper settings set to use the RS232 level converter.
Interfaces
Refer the help files of the daughter board to find out what interfaces are used and which peripheral on the processor are connected to the interface.