Ok, I have one uart interface (TXD GPIO 14, RXD GPIO 15). I want at least one more uart interface. Possible solutions: • Bit banging: Use two unrelated spare GPIOs. I understand that timing is a problem on a standard linux. Would it be reliable with very low baudrate?

Accessing Raspberry Pi via Serial. UART TXD and RXD pins. RS-232 +/- 12V voltage levels on the serial ports (the Zonet ZUC3100 w/ the pl2303 chip. How do I make serial work on the Raspberry Pi3. Moved from the header pins to the Bluetooth chip and the mini UART made available. Serial Port on Raspberry Pi. Since the Raspberry Pi is a 3.3V. My desire to use the UART port comes from the fact that I have a nice three pin. Raspberry Pi - Wikipedia. For other uses, see RPI.

• Switching: RPI decides when to talk to which device. • spi to 2 x uart bridge: Didn't find a suitable part (availability, price, dil package) • usb to uart: Expensive Are there other options? I'm inclined to switching, if it can be done. What would you advise? A USB UART, such as FTDI, isn't really expensive. Patch A Pool With Plaster Paint. All your other options sound like they will cost you more in parts and time than the ~$13 it might cost you, and be unreliable or slow. Just go for the fast and trouble-free option, such as: Sparkfun sells one too.

In fact, maybe you can just pull one out of some old USB device or buy one from a junk store that doesn't know what it does. I messed with an SPI to UART adapter for an Arduino project, there was no existing library so I wrote my own. Campbell Essential Biology 5th Edition Pdf on this page. Bosch Kts 301 Software Downloads. In the end it worked ok, but if I could have just dropped in a $15 part I would have.