12/2/2023 0 Comments Goodsync on raspberry pi 3![]() Anyway, trying just one is OK for newbies.Īnother thing is that I tested both TSX and TSB versions and found TSB more reliable. Perhaps I have not learnt all the tricks in fiddling the I2C pull up resistors. Actually I found many I2C modules (including MCP23017) when grouped more than two, become unstable and difficult to troubleshoot. I have been using TSX/TSB0104s for demultiplexing UART/I2C/SPI channels and found them OK, if not too greedy to entertain too many channels at the same time. The other modules AdaFruit are recommending are TXS/TXB0108 modules. SparkFun has now discontinued this module for a reason. I tried hard for a couple of days before giving up. But then I found the datasheet has some "special features" which are perhaps OK for hackers to deal with, but too hard for newbies to handle. I thought it too good to be true to be able to have as many UART channels as I wanted. SparkFun once sold a NXP I2C/SPI to UART module. NXP SC16IS750 I2C/SPI to UART Module Not Recommended for Newbies I have not tried it on Rpi ( see update below). I also tried the CP2102 USB to TTL adapters, but many CP2102 modules are sadly not compatible to Win10 and ESP8266-12. In other words, Raspbian version 2019apr already have Pl2303 and CH340 drivers preinstalled. I found both PL2302 and CH340 adapters can be detected without first installing drivers. I also tried the USB to TTL adapters for Rpi3B+ Raspbian version 2019Apr. It works smoothly, except you can not use more than one UART channel at the same time. I select one one of the four channels by enabling TXS0104 converter I want. I used to use four TXS0104 logical level converters to demux one UART channel into 4. I followed Roland Pelayo's instructions and have been doing experiments and found everything works as he suggests. The latter has smaller FIFOs, lacks flow control and has its baud Generally, the PL011 UART is more reliable than the mini UART because Each UART can be accessed individually via /dev/ttyS0įor the mini UART and /dev/ttyAMA0 for the PL011 UART. Whichever UART is assigned to the Linux console is accessible through On the other hand, the mini UART becomes the Linux console UART for models with Bluetooth like the Raspberry Pi 3 and Raspberry Pi Zero W.įor these models, the PL011 UART is tied directly to the Bluetooth Send Linux commands from your PC to the Raspberry Pi on this UART. The PL011 UART is the main UART for models without Bluetooth featureĪnd is tied directly to the Linux console output. However, you only have one pair of TXD and RXD pins to work with. Technically, the Raspberry Pi has two UARTs: PL011 UART and mini UART. Raspberry Pi Serial (UART) Tutorial - Roland Pelayo 2018jun22 17,305 Views ![]() I googled and the found the following tutorial useful. I have been playing with serial communication this couple of days.
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