![]() You can then wire the !OE and SEL lines to pins on the Arduino to enable the application code to route serial data from the hardware port to either the USB serial bridge or the device connected to the HOST header.īecause of the pull-down resistor on the SEL line, if that pin is left floating, the default destination for the traffic is the USB serial bridge. That header can be connected to any host-type device (such as another FTDI board, or any of our Bluetooth Mate type boards). The benefit comes in with the "HOST" header. If you connect that header to the Arduino as you would with a normal Basic, you can program the Arduino exactly as you would normally, and never notice a difference. The header labeled "CLIENT" is basically the same as the output header on a standard FTDI Basic board. We've left the headers off, so you can choose the header most appropriate for your application. ![]() The actual board design is fairly compact. Serial communications - The FTDI SmartBasic is a device for multiplexing serial signals learn a bit more about serial data and how it works with this tutorial.Logic levels- Setting the jumper on the FTDI SmartBasic to the wrong voltage level may cause damage to one or more of the boards hooked up to it.No special code is required to enable programming, either! Suggested Readingīefore we get started, you might want to review these other tutorials: ![]() The SmartBasic board adds a multiplexer to the serial port pins coming from the Arduino, which allows the application code to switch the serial signals from the USB port to another device. Normally, to use a device which requires a serial port resource on an Arduino board, one must either use a software serial port or plug and unplug the device during programming. The FTDI SmartBasic is a variation on our classic FTDI Basic which allows you to connect a second device to the hardware serial port on an Arduino Pro, Pro Mini, or other USB-less board without compromising the ability to bootload code from the Arduino IDE.
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