The Arduino Uno uses an 8bit MCU from the USB family as a USB-UART bridge, so it could theoretically do the same.

Also, teensy uses a MCU from the AVR USB family, so it can emulate keyboards, mice, etc.

But you can see that sending one block (80byte) is done in about 32µs. Teensy uses a different bootloader that requires a patch to the arduino IDE last time I checked. Here some measurement results for 4MHz SPI frequency:Īnd here a measurement with 32MHz SPI frequency (can't resolve details with my LA at this speed). Thus, you get a synchronization of the sending and receiving data rate for free. There is also an ATmega32U4 with Arduino Leonardo bootloader on the board, which allows for easy programming using Arduino IDE. The Teensy 3.2 has a similar I/O arrangement but has higher performance and more memory. The newest addition to the CAN family, this CAN Bed-FD carries MCP2517FD CAN Bus controller with SPI interface and MCP2542FD CAN transceiver to achieve the CAN-BUS capability. There are some other Teensy products that may be better suited depending on the application. The underlying PC driver is smart enough to pause sending when the FW is not reading the data from the stream. The Teensy LC is a good solid performer in the lower end of the Teensy performance spectrum but it is still about 8x faster than an Arduino Uno. Port.Write(data, 0, bufSize) // send out data, driver will pause if necessaryīoth, FW and SW work without issue here and I didn't observe any data loss. While (!Console.KeyAvailable) // stop program on any key press Using (var port = new SerialPort('COM11'))

The early Teensy 3.1 cards dropped the numbers. The numbers confused a lot of people, since the convention Arduino and other uses, which we follow for everything else, uses the number to mean which port is belongs to. SPI.beginTransaction(SPISettings(4'000'000, MSBFIRST, SPI_MODE0)) ĭigitalWriteFast(CS, LOW) // assuming an active low chip selectįor (unsigned i = 0 i this is auto syncing the rate with the FW read rate. The original Teensy 3.0 card has these labeled CS0, CS1, CS2, CS3, CS4. If (ringBuffer.available() >= blockSize) // send only a complete data block Here some prove of principle code showing how to achieve this: #include 'SPI.h'Ĭircular_Buffer ringBuffer // adjust buffer size if necessary To achieve your data transfer requirement (1 block of 40 16bit words every 250µs) it might be best to send out one block of data in a timer ISR and invoke this ISR with 4kHz. I suggest to use a simple ring buffer (e.g. Actually, for a T4.x a data rate of 300kB over the virtual serial port is not demanding at all.

Spi programmer with teensy