Hey,
how can I not run via USB but via the serial interface of the Raspberry Pi to transfer data?
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[Solved] Connect Arduino Pro Mini via serial interface
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@ufelet See http://blog.oscarliang.net/raspberry-pi-and-arduino-connected-serial-gpio/
You should be able to use /dev/ttyAMA0 instead of /dev/ttyUSB0 as part of the homeduino setup.
"It always takes longer than you expect, even when you take into account Hofstadter's Law.", Hofstadter's Law
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Thank you for your quick response
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I had no luck so far. /dev/ttyAMA0 and pro5v328 are included in the Makefile and the signal is level-shifted. The Upload ends with the error-message “programmer is not responding”. Programming with an USB-RS232-Converter via /dev/ttyUSB0 should work if the DTR-Pin of the converter is connected to the DTR/Reset of the Arduino Pro Mini. Which GPIO is responsible for the DTR/Reset-Signal?
Next Problem: An already programmed Arduino Pro Mini does’t work at the RS232-Port. The config.json in the plugin-directory was edited to contain:
{
“plugin”: “homeduino”,
“driver”: “serialport”,
“driverOptions”: {
“serialDevice”: “/dev/ttyAMA0”,
“baudrate”: 115200
},
“receiverPin”: 0,
“transmitterPin”: 4
},
Is the DTR/Reset-Signal needed during normal operation? Is there something else i haven’t considered jet? -
@ufelet As far as I know Raspi has no GPIO pin for DTR, but it is possible to assign a GPIO for it, if the driver software is able to handle it. Apparently, several solutions exist:
- http://redhunter.com/blog/2015/01/09/raspberry-pi-arduino-ide-via-gpio/
- http://www.deanmao.com/2012/08/12/fixing-the-dtr-pin/
If you use the USB-RS232 converter (USB is connected to Raspi) the following wiring should apply for Arduino Pro Mini:
"It always takes longer than you expect, even when you take into account Hofstadter's Law.", Hofstadter's Law
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done - Thank you
I had “console = ttyAMA0,115200 kgdboc = ttyAMA0,115200” comment out forget. -
@ufelet Great.
So, you forgot to follow the second step of the HowTo?
http://blog.oscarliang.net/raspberry-pi-and-arduino-connected-serial-gpio/"It always takes longer than you expect, even when you take into account Hofstadter's Law.", Hofstadter's Law
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thanks a lot. That little detail did the trick. I’ve totally overlooked the missing console-string and didn’t know it could cause this problem. thanks again for the help
