FTDI Not Working On StandAlone ATmega328p

Ps991 · December 28, 2014, 8:25pm

I have a circuit with an ATmega328p hooked up to a 16Mhz oscillator. When I properly connect an FTDI device, it always gives me the same error.

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Arduino: 1.0.5 (Mac OS X), Board: "ATmega328P-PU (16MHz Crystal)"
Binary sketch size: 1,082 bytes (of a 30,720 byte maximum)
/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega328p -cstk500v1 -P/dev/tty.AdafruitEZ-Link35b2-SPP -Uflash:w:/var/folders/z4/22r0ynkn0gl0nsq8r01bnwrm0000gn/T/build9159934491349898627.tmp/Blink.cpp.hex:i 

avrdude: Version 5.11, compiled on Sep  2 2011 at 18:52:52
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/etc/avrdude.conf"
         User configuration file is "/Users/James/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/tty.AdafruitEZ-Link35b2-SPP
         Using Programmer              : stk500v1
avrdude: Send: 0 [30]   [20] 
avrdude: Send: 0 [30]   [20] 
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding

avrdude done.  Thank you.

I have tried with 3 different FTDI devices, (not the CH340G)

I have Vcc hooked to Vcc,
Rx goes to Tx,
Tx goes to Rx,
GND to GND,
DSR or CTS to GND,
DTR to a 0.1uF electrolytic capacitor in series (+ to RESET, - to DSR) to RESET

The ATmega328p has properly hooked up 16Mhz crystal with 2 22pF capacitors as recommended, there is a 10kohm resistor from Vcc to RESET as recommended...yet the same error.

I am wondering what I am doing wrong because all of these FTDI devices work when attached to an UNO or a MICRO, but never standalone.

Help D;

system · December 28, 2014, 9:10pm

Disconnect the DSR or CTS from ground.

Ps991 · December 28, 2014, 9:12pm

It cant be that simple...but...Im going to try it out

I tried 2 FTDI devices with the DSR / CTS removed, same error

CrossRoads · December 28, 2014, 9:45pm

Try the Loopback test as a start.
CTS (clear to send, from the slave device) should connect to GND, lets the host know it can send data.
The driver may ignore it. Or it may require it. I’ve always connected it.

Ps991 · December 28, 2014, 10:20pm

Nothing echoes back...but occasionally I get this error

java.io.IOException: Device not configured in writeArray
	at gnu.io.RXTXPort.writeArray(Native Method)
	at gnu.io.RXTXPort$SerialOutputStream.write(RXTXPort.java:1124)
	at processing.app.Serial.write(Serial.java:526)
	at processing.app.Serial.write(Serial.java:549)
	at processing.app.SerialMonitor.send(SerialMonitor.java:203)
	at processing.app.SerialMonitor.access$100(SerialMonitor.java:35)
	at processing.app.SerialMonitor$3.actionPerformed(SerialMonitor.java:92)
	at javax.swing.JTextField.fireActionPerformed(JTextField.java:492)
	at javax.swing.JTextField.postActionEvent(JTextField.java:705)
	at javax.swing.JTextField$NotifyAction.actionPerformed(JTextField.java:820)
	at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1645)
	at javax.swing.JComponent.processKeyBinding(JComponent.java:2859)
	at javax.swing.JComponent.processKeyBindings(JComponent.java:2894)
	at javax.swing.JComponent.processKeyEvent(JComponent.java:2822)
	at java.awt.Component.processEvent(Component.java:6191)
	at java.awt.Container.processEvent(Container.java:2084)
	at java.awt.Component.dispatchEventImpl(Component.java:4776)
	at java.awt.Container.dispatchEventImpl(Container.java:2142)
	at java.awt.Component.dispatchEvent(Component.java:4604)
	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1856)
	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:722)
	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1000)
	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:865)
	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:686)
	at java.awt.Component.dispatchEventImpl(Component.java:4648)
	at java.awt.Container.dispatchEventImpl(Container.java:2142)
	at java.awt.Window.dispatchEventImpl(Window.java:2492)
	at java.awt.Component.dispatchEvent(Component.java:4604)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:717)
	at java.awt.EventQueue.access$400(EventQueue.java:82)
	at java.awt.EventQueue$2.run(EventQueue.java:676)
	at java.awt.EventQueue$2.run(EventQueue.java:674)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:690)
	at java.awt.EventQueue$3.run(EventQueue.java:688)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:687)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
java.io.IOException: Device not configured in writeArray
	at gnu.io.RXTXPort.writeArray(Native Method)
	at gnu.io.RXTXPort$SerialOutputStream.write(RXTXPort.java:1124)
	at processing.app.Serial.write(Serial.java:526)
	at processing.app.Serial.write(Serial.java:549)
	at processing.app.SerialMonitor.send(SerialMonitor.java:203)
	at processing.app.SerialMonitor.access$100(SerialMonitor.java:35)
	at processing.app.SerialMonitor$3.actionPerformed(SerialMonitor.java:92)
	at javax.swing.JTextField.fireActionPerformed(JTextField.java:492)
	at javax.swing.JTextField.postActionEvent(JTextField.java:705)
	at javax.swing.JTextField$NotifyAction.actionPerformed(JTextField.java:820)
	at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1645)
	at javax.swing.JComponent.processKeyBinding(JComponent.java:2859)
	at javax.swing.JComponent.processKeyBindings(JComponent.java:2894)
	at javax.swing.JComponent.processKeyEvent(JComponent.java:2822)
	at java.awt.Component.processEvent(Component.java:6191)
	at java.awt.Container.processEvent(Container.java:2084)
	at java.awt.Component.dispatchEventImpl(Component.java:4776)
	at java.awt.Container.dispatchEventImpl(Container.java:2142)
	at java.awt.Component.dispatchEvent(Component.java:4604)
	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1856)
	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:722)
	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1000)
	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:865)
	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:686)
	at java.awt.Component.dispatchEventImpl(Component.java:4648)
	at java.awt.Container.dispatchEventImpl(Container.java:2142)
	at java.awt.Window.dispatchEventImpl(Window.java:2492)
	at java.awt.Component.dispatchEvent(Component.java:4604)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:717)
	at java.awt.EventQueue.access$400(EventQueue.java:82)
	at java.awt.EventQueue$2.run(EventQueue.java:676)
	at java.awt.EventQueue$2.run(EventQueue.java:674)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:690)
	at java.awt.EventQueue$3.run(EventQueue.java:688)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:687)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

CrossRoads · December 29, 2014, 12:32am

Try swapping Rx & Tx, then loopback again.
If still no go, check your drivers then.
Drivers - FTDI, VCP or D2XX down at the bottom of the page.

Ps991 · December 29, 2014, 12:56am

Unfortunately no response, let me try the drivers...even though Im sure I have tried that before

Installed Drivers again, does not work...I simply cannot understand how my board could possibly be wrong...

Its not my computer, I have tried others, its not the FTDI, I have tried others, I have tried other ATmega328p's, I have tried breadboard, nothing works

The only thing I have not tried was using Windows OS, but I have never seen anything about OSX not working, and I have done a lot of research on this problem...

CrossRoads · December 29, 2014, 8:20pm

Ah, didn't realize you were on a Mac. I'm PC only.

system · May 5, 2021, 4:02pm