Putty Serial Port Scripts How To Build A

If you want to use it for other purposes you must prevent this.

This can help to fix problems during boot, or to log in to the Raspberry Pi if the video and network are not available.

This can be useful if you want the Raspberry Pi to control another device.

To connect to another serial device, you connect the transmit of one to the receive of the other, and vice versa.

The ports use 0V and 3.3 V logic levels, not 0 5V TTL levels or the -12 V used by RS-232 serial ports found on some older PCs.

If you wish to connect one of these, you need a board or adapter to convert the signal levels.

Putty Serial Port Scripts How To Build A

See this tutorial for one example on how to build a 3.3 V to RS-232 level converter with a breadboard, a MAX3232CPE IC and five 0.1 F capacitors.

If your Raspberry Pi has bluetoothwireless capability, then the on-chip UART connected to the header pins is the less capable mini-UART with no break detection, no framing errors detection, no parity bit, no receive timeout interrupt and no DCD, DSR, DTR or RI signals (See RPi UART info for more details.).

These can be simply plugged in directly to the GPIO header (see illustration).

See this tutorial for an example using a ready-made level shifter module.

Other circuits for level shifting are shown at RPiGPIOInterfaceCircuitsLevelShifters.

The Debug Buddy ultimate serial port can also be configured for 05 V signals.

When this is done, you will need to set up a terminal emulator program on your PC as described below.

See Tedious Old-Fashioned Way Using Minicom to configure minicom.

If this is not possible, as is the case for the Raspberry Pi Model A, you can set up a connection over the serial cable.

A network connection running over a serial cable can be very useful for copying files onto the Raspberry Pi.

This is the cue to quit your terminal program and proceed to step two.

In the above line, 115200 is the baud rate of the connection, 10.0.0.1 is the local internet protocol (IP) address, the address you want your computer to have.

IP address, it is the address that the Raspberry Pi will have.

You can chose the second address; it must not yet be assigned on the LAN (and be outside the DHCP range).

Users of Windows XP and below can choose between using PuTTY and the built-in Hyperterminal.

USB-attached serial adapters should have the name of the adapter shown (the Adafruit cable comes up as Prolific USB-toSerial Comm Port.

In extreme case this could lead to kernel warnings and other problems.

However its probably a good idea to connect the signals with a 2.2 k resistors in series.

This will prevent damage if two outputs are accidentally connected together (e.g.

TxD with TxD or if a GPIO input pin is accidentally programmed as output).