Raspberry Pi RS232 Board v1.0 is a standard communication port for industry. UART Pin must be pup joint if you want. Raspberry Pi&USB to serial COM Port.
It walks you through linking the serial port up to a PC and playing with sending and receiving data over. Python serial port (UART). Raspberry Pi Foundation. Centos 6 Yum Install Mod_jk. Using UART on Raspberry Pi – Python. Freeing up UART pins on Raspberry Pi GPIO. The following python program reads 10 characters from the serial port and.
Introduction: He Serial Por module is specifically designed for Raspberry Pi. The module use Maxim MAX232 chip and DB9 port. So the user don’t need to connect Dupont Line and that avoid wrong wiring. User can use this module to debug Raspberry Pi easily. Produce Features： • Maxim MAX232 on chip • DB9 port • Compatible with Raspberry Pi A+,B,B+/2. Port： • Raspberry Pi connection port • DB9 port Product Parameters： • Working voltage: 5V • Two Drivers and Two Receivers • Operates Up To 120 kbit/s • Low Supply Current... 8 mA Typical Typical Application： • Interface Translation • Multidrop RS-232 Networks • Low-Power Modems.
Gert, Not sure about 'mis-using' but the Propeller micro-controller from Parallax Inc contains a boot loader in ROM that uses a serial protocol over tx and rx pins which jumps into life after a reset. The mcu's reset line being driven by a DTR or RTS signal derived from an RS232 port. All this runs at 3.3 volts. Of course now a days there is no RS232 in the picture, just PC->USB->FTDI (chip or such) ->Propeller.