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1. 

   raymadigan
   Member

   I have been adding the logger capability to my application and I have run into the issue that the IDE seems to think the comm port is already in use. It happens when I hit the Serial Monitor button on the IDE after I upload my application. It has only become an issue since I started using the SPI capability of the Mini.

   Another very similar issue is that I can't upload a new version of the application to the device until I go into perpetual upload, or change the running application to the BareMinimum, or maybe any application other then mine.

   [code]Resetting to bootloader via DTR pulse

   Reset via USB Serial Failed! Did you select the serial right serial port?
   Assuming the board is in perpetual bootloader mode and continuing to attempt dfu programming...

   Searching for DFU device [1EAF:0003]...

   Couldn't find the DFU device: [1EAF:0003][/code]

   but if I press the reset and hold the but down and go to perpetual upload mode then it can transfer.

   Has anyone had any experience with this behavior?

   Edit
   I have just verified that when I remove the logger I can then see the serial monitor.

   Posted 2 years ago #
2. 

   crenn
   Moderator

   What is connected to the Maple Mini? What operating system is it? Do you have anything on pins 23 & 24? What code are you uploading?

   Posted 2 years ago #
3. 

   raymadigan
   Member

   I am using most of the pins. Nothing is connected to pin 23 and 24. It is a large application, I can summarize the pin assignments if that would be useful.

   10 pins go to a couple of dip switches
   a serial lcd display that uses serial 1
   an SD card that uses SPI 1
   7 leds
   1 pin that go to DS18B20 temperature sensors
   2 pins that turn on and off solid state relays via a transister
   2 pins that turn on and off a 12V fan via a transister.

   I will find the pin paper and detail the pin assigneent this afternoon.

   I suspect it is the use of the SPI and the SD card, or size, or a bug :-)

   Posted 2 years ago #
4. 

   raymadigan
   Member

   Here is the pin assignments

   0,1 dipSwitch 1-2
   2 empty
   3 card detect Sd board
   4-7 Sd board
   8,9 Serial LCD card
   10-14 dipSwitch 3-7
   15 SSR 1
   16 led 1
   17 DS18B20
   18-20 led 2-4
   21 SSR 2
   22 led 5
   23,24 empty
   25 Tran 1
   26,27 led 6-7
   28 dipSwitch 8
   29 Tran 2
   30-31 dipSwitch 9-10

   The Serial lcd uses the Hardware serial
   The SD Card uses the SdFat library from a leaflabs link
   the DS18B20 use a one wire library that I ported using digitalRead/digitalWrite/pinmode for the macros

   The application has worked normally without the SD Card for a few months using a flat programming model. This means that I only used libraries to support the external devices and the main part of the application lived in standard IDE created files.

   The application got large and I had a hard time keeping track of it so I went to an object oriented approach making libraries to implement the classes. I got the application running without the SD card and it seemed to run fine. It is when I added the libraries for the SD Card that I started to run into trouble.

   The MicroSD card board is:
   https://www.adafruit.com/products/254

   Posted 2 years ago #

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