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ftditest [2010/08/06 17:14]
ladyada
ftditest [2016/01/28 18:05]
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-You can only test ONE CABLE at a time 
  
-====== Step 1 - CHIP TEST ====== 
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-Plug in the cable into your computer (we will use Windows) 
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-Go to the Device Manager (From the **Start Menu**, select **Settings->​Control Panel**. Double click on **System** and select the **Hardware** tab. Then click on the **Device Manager** button) ​ 
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-{{http://​www.ladyada.net/​images/​arduino/​devicemanager.jpg}} 
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-When plugging in a USB cable, the window will refresh and you will see **USB Serial Port (COMx)** ​ 
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-If the new COM port doesn'​t show up, there is a problem with the cable 
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-====== Step 2 - VOLTAGE TEST ====== 
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-This is the end of your FTDI Cable 
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-{{:​ftdi:​ftdiend.jpg?​500|}} 
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-We added breakout wires to make it easy to measure voltages 
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-{{:​ftdi:​breakoutiwre.jpg?​500|}} 
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-Test voltage between black and red wires - it must be 5V 
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-{{:​ftdi:​5vtest.jpg|}} 
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-Test voltage between black and orange wires - it must be 3.3V (NOT 5V) 
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-{{:​ftdi:​vcciotest.jpg|}} 
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-If test voltages are not 5V and 3.3V, the cable is bad 
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-====== Communication test ====== 
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-Download X-CTU: http://​ftp1.digi.com/​support/​utilities/​40002637_c.exe 
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-Install software 
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-Start up software 
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-{{:​ftdi:​xctucom.gif|}} 
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-Select the COM port that says **USB SERIAL PORT** 
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-{{:​ftdi:​xctuterm.gif|}} 
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-Click on **TERMINAL** tab 
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-====== Test RX and TX ====== 
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-===== Test TX is not shorted to RX ===== 
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-FTDI cable has nothing attached to it 
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-{{:​ftdi:​ftdiend.jpg?​500|}} 
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-Type text into terminal window. All text should be blue. If red text appears, the cable is bad. 
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-{{:​ftdi:​txshorttest.gif|}} 
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-When done, click **Clear Screen** 
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-===== Test RX and TX ===== 
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-Connect 100 ohm resistor between orange and yellow wires 
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-{{:​ftdi:​rxtx.jpg|}} 
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-Type text into terminal window, all characters will appear in blue AND red 
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-{{:​ftdi:​xcturxtx.gif|}} 
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-If red text does not appear, cable is bad 
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-====== Test CTS ====== 
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-We will test the CTS pin. Connect 100 ohm resistor between brown and red wires 
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-{{:​ftdi:​ctshigh.jpg?​500|}} 
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-On terminal, **CTS** box is black. If it is not black, cable is bad. 
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-{{:​ftdi:​xctuctshigh.gif|}} 
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-Now connect 100 ohm resistor between brown and black wires 
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-{{:​ftdi:​ctslow.jpg?​500|}} 
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-On terminal, **CTS** box is green. If it is not green, cable is bad. 
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-{{:​ftdi:​xctuctslow.gif|}} 
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-====== Test RTS ====== 
-===== RTS short test ===== 
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-FTDI cable has nothing attached to it 
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-{{:​ftdi:​ftdiend.jpg?​500|}} 
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-Look at window, make sure RTS box is clicked and CTS is BLACK. 
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-{{:​ftdi:​rtsshorttest.gif|}} 
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-===== RTS function test ===== 
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-Put 100 ohm resistor between Yellow and Brown wires 
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-{{:​ftdi:​ctsrts.jpg?​500|}} 
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-When RTS box is clicked, CTS box is GREEN 
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-{{:​ftdi:​rtshigh.gif|}} 
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-When RTS box is not clicked, CTS box is BLACK 
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-{{:​ftdi:​rtslow.gif|}} 
/home/ladyada/public_html/wiki/data/pages/ftditest.txt · Last modified: 2016/01/28 18:05 (external edit)