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by TrickyT
Mon Jun 13, 2016 6:32 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Serial Communication Question
Replies: 14
Views: 2549

Re: Serial Communication Question

The handshake isn't for the Pi, it's for the peripheral. The Pi is the "Master" unit, but it has to set the "Handshake" line high or the "Slave" unit will ignore it. Not my design, I wish it wasn't set up that way, because I think that's going to make my life miserable...
by TrickyT
Mon Jun 13, 2016 6:26 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Serial Communication Question
Replies: 14
Views: 2549

Re: Serial Communication Question

You can use any general purpose GPIO pin. For example to use GPIO2 (pin 3). To switch GPIO2 high (3.3v) do the following: $ sudo python >>> import RPi.GPIO as GPIO >>> GPIO.setup(2, GPIO.OUT) >>> GPIO.output(2, True) GPIO2 is Pin 3 on my board....Would that output a 3.3V signal or a 5V signal?
by TrickyT
Mon Jun 13, 2016 6:24 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Serial Communication Question
Replies: 14
Views: 2549

Re: Serial Communication Question

I'm not sure which RPi board you are using. Check this out for differences and a short tutorial on GPIO in Python. http://www.raspberrypi-spy.co.uk/2012/06/simple-guide-to-the-rpi-gpio-header-and-pins/ This is going to be very helpful, as I'm probably going to have to write some python for several ...
by TrickyT
Mon Jun 13, 2016 6:23 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Serial Communication Question
Replies: 14
Views: 2549

Re: Serial Communication Question

The handshake isn't for the Pi, it's for the peripheral. The Pi is the "Master" unit, but it has to set the "Handshake" line high or the "Slave" unit will ignore it. Not my design, I wish it wasn't set up that way, because I think that's going to make my life miserable...
by TrickyT
Mon Jun 13, 2016 5:52 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Serial Communication Question
Replies: 14
Views: 2549

Re: Serial Communication Question

Cacti:

OK, that covers enabling the software, and I understand the UART TX and RX on the GPIO are 3.3VDC, and the GND pin speaks for itself, but which pin can I use for the 3.3VDC handshake?
by TrickyT
Mon Jun 13, 2016 5:49 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Serial Communication Question
Replies: 14
Views: 2549

Re: Serial Communication Question

The handshake isn't for the Pi, it's for the peripheral. The Pi is the "Master" unit, but it has to set the "Handshake" line high or the "Slave" unit will ignore it. Not my design, I wish it wasn't set up that way, because I think that's going to make my life miserable...
by TrickyT
Mon Jun 13, 2016 3:48 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Serial Communication Question
Replies: 14
Views: 2549

Serial Communication Question

First of all, sorry if this is answered somewhere else and I'm just repeating...I likely am, but I don't understand half of what I'm reading at this point, so I most likely missed it entirely. I'm not a coding/development guy, but I've been tasked with trying to make this work, since I'm the only on...

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