ACEIRMC USB Universal Programmer, TL866II Plus Programmer Flash Programmer for EEPROM Flash 8051 AVR MCU GAL PIC with 10 Adapter (Programmer Host+10Adapter) 5.0 out of 5 stars 3 $71.99 $ 71. Feb 01, 2000. The Active Serial (AS) configuration scheme is supported in the 1 bit data width (AS x1) or the 4 bit data width (AS x4). The AS x4 scheme is supported only in Stratix ® V devices. AS configuration can be performed using an Altera ® serial configuration (EPCS) device or quad-serial configuration (EPCQ) device. During AS configuration, the Altera FPGA acts as the configuration master and the. The COM ports in the Device Manager might actually be named “USB Serial Device” instead of having a descriptive name as shown in the screenshots above. This can happen if you are using Windows 10 or later and you plugged the programmer into your computer before installing our drivers for it.
I recently found an interesting use of the many Arduino boards that I have. You can use your Arduino board as a bridge to connect serial devices to the computer, without even writing a sketch. Street fighter 2 mugen. How cool is that? 😉
Before I tell you how you can do it, let me explain about virtual COM ports and how Arduino uses them.
Virtual COM ports
The ATmega328 microcontroller used in the Arduino board supports UART TTL (5V) serial communication. You can connect the microcontroller to the serial port in your computer (with appropriate logic level converters) and can interface with it.
But these days, most computers don’t have a serial port. So the Arduino team when they designed the board, placed another IC to channel this serial communication over USB. In pre-UNO boards this is handled by the FTDI FT232RL IC and in UNO it is handled by ATmega8U2 IC. In your computer, you will have to install corresponding drivers and the device will appear as the virtual COM port.
Holding the processor in RESET mode
The serial to USB(TTL) IC (either FTDI FT232RL or ATmega8U2) is connected to Arduino pins 0 and 1. If we hold the processor in RESET mode, then all its GPIO pins will me in tri-state, effectively removing it from the circuit and you can directly interface the serial to USB IC with your device.
M3 bitlocker loader for mac v5.0 %d0%b7%c2%a0%d2%91%d0%b8%c2%a7%d1%98. To hold the processor in RESET mode, just connect the RESET pin (which is active-low) with the ground. This will hold the processor in RESET mode.
In Circuit Serial Programmer
Interfacing the serial device
Now you can connect the serial device to the Arduino pins 0 and 1. You should however note that the Rx pin (pin 0) goes to the Rx of the device and Tx pin (pin 1) goes to the Tx of the device and not the other way around.
Device Serial Number
In your computer the device will appear as a Virtual COM port. You can connect to it using programs like screen or hyper terminal.
I didn’t had a serial device handy with me, so I used a another Arduino as a serial device to test this. I wrote a small sketch which was printing something in the Serial every few seconds and then when I opened the virtual COM port using screen, I was able to see its output.
This is a neat trick and might be useful if you have to interface some serial device like a GPS or a Bluetooth module with your computer.
Happy hacking 🙂