Cách kết nối Mạch chuyển USB UART CP2102 với Arduino Mini Pro

IF YOU ARE LOOKING FOR;

• How to program Arduino Mini Pro with CP2102 USB-to-TTL serial converter 5 pins without DTR (reset pin)
• How to program Arduino Mini Pro without using Arduino board as ISP

This post probably will help you.

REQUIRES:

1. Arduino Mini Pro (In this example I’m using Arduino Mini Pro 5v / 16Mhz version)
2. CP2102 USB-to-TTL (Drivers for Mac, Windows, Linux or more..)
   
   
   
   USB view in system

CONNECTIONS CP2102 USB-TO-TTL 5PINS TO ARDUINO MINI PRO:

1. CP2102 USB-to-TTL: TXD (green) -> Arduino Mini Pro RX
2. CP2102 USB-to-TTL: RXD (yellow) -> Arduino Mini Pro TX
3. CP2102 USB-to-TTL: GND (brown) -> Arduino Mini Pro GND
4. CP2102 USB-to-TTL: +5V (red) -> Arduino Mini Pro VCC
5. CP2102 USB-to-TTL: RST/DTR (reset)-> Arduino Mini Pro GRN/DTR

UPLOADING SKETCH WITH ARDUINO IDE
I’m currently using Arduino 1.5.5. I configured it as below;

1. Arduino IDE -> Tools -> Board -> Arduino Pro or Pro Mini
2. Arduino IDE -> Tools -> Processor -> ATmega328 (5V, 16 MHz)
3. Arduino IDE -> Tools -> Port -> /dev/tty.SLAB_USBtoUART
4. Arduino IDE -> Tools -> Programmer -> AVRISP mkII

• /dev/tty.SLAB_USBtoUART is the name of serial port shown on Mac OS X. On windows you should see comX (X is a number)
• To find serial port name list, write on terminal;

Note:
+ The CP2102 USB-to-TTL hasn’t 6th pin for auto reset Arduino board so you have to click on reset button on Arduino Mini Pro manually.

• Click on upload sketch (green right arrow)
• As soon as you see “Compiling sketch…” on status bar, click on reset button.
• If your timing is good you’ll see “Done uploading.”

+ Nếu không kết nối pin Reset RST sẽ không upload được.


Ref:
http://lab.dejaworks.com/programming-arduino-mini-pro-with-cp2102-usb-to-ttl-serial-converter/