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by federico.human
Mon Dec 19, 2016 7:37 pm
Forum: Teaching and learning resources
Topic: Block Diagram
Replies: 0
Views: 4017

Block Diagram

Dear all,

I am looking for a block diagram that shows RPi B+ hardware layers, but can't find anything. For example:

Image

Best regards,

Federico
by federico.human
Wed Oct 05, 2016 11:30 pm
Forum: HATs and other add-ons
Topic: gpsd failing on boot, but starts manually
Replies: 15
Views: 35213

Re: gpsd failing on boot, but starts manually

After trying everything in this thread, and still having this issue when startup, I found this beauty which did the trick: sudo ln -s /lib/systemd/system/gpsd.service /etc/systemd/system/multi-user.target.wants/ Got the information from this web-site, which makes a wonderful step to step to configur...
by federico.human
Tue Oct 04, 2016 11:19 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: CP2102 - communication issues
Replies: 7
Views: 3328

Re: CP2102 - communication issues

I believe it is 'gpsd' the one that is causing the issues. When the device boots I have no access to any of the UART modules. This is the /etc/default/gpsd content (based on this https://www.raspberrypi.org/forums/viewtopic.php?f=45&t=53644 ): # Default settings for the gpsd init script and the ...
by federico.human
Mon Oct 03, 2016 11:32 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: CP2102 - communication issues
Replies: 7
Views: 3328

Re: CP2102 - communication issues

I solved the issue connecting my other UART device to the CP2102, and the GPS to the RPi built-in UART. Though I would prefer this to be the other way, I can't spend much more time giving this a try.

Thank you very much for your help!
by federico.human
Sun Oct 02, 2016 5:55 pm
Forum: Python
Topic: New pigpio Python module
Replies: 204
Views: 85669

Re: New pigpio Python module

On a python file: #!/usr/bin/python import time import pigpio RX = 3 pi = pigpio.pi() pi.set_mode(RX, pigpio.INPUT) pi.bb_serial_read_open(RX, 9600, 8) while True: (count, data) = pi.bb_serial_read(RX) if count: print data time.sleep(1) Which I run from the console: sudo python pigpio.py Edit: I rea...
by federico.human
Sun Oct 02, 2016 3:44 pm
Forum: Python
Topic: New pigpio Python module
Replies: 204
Views: 85669

Re: New pigpio Python module

I need your help. I installed the library in Raspbian: sudo apt-get install pigpio python-pigpio python3-pigpio And when I try to use it I get an error on the line: pi = pigpio.pi() pigpio.pi() AttributeError: 'module' object has no attribute 'pi' This does not happen when I run python and then manu...
by federico.human
Sun Oct 02, 2016 2:52 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: CP2102 - communication issues
Replies: 7
Views: 3328

Re: CP2102 - communication issues

For a GPS module GY-NEO6MV2. I will use python to access the device with PySerial API. I may try to use software UART RX, though I am still working on it. Edit: When connecting the GPS module to the CP2102, the RX led blinks 1Hz, which I believe is the GPS TX frequency. Also when I echo something to...
by federico.human
Sun Oct 02, 2016 3:35 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: CP2102 - communication issues
Replies: 7
Views: 3328

Re: CP2102 - communication issues

Tried both things. I only get one letter echoed when I enable that option.

Edit:

Also when I run the following:

Code: Select all

echo '\r' > /dev/ttyUSB0
both TX and RX leds blink once, as if the data was sent.
by federico.human
Sun Oct 02, 2016 3:01 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: CP2102 - communication issues
Replies: 7
Views: 3328

CP2102 - communication issues

Dear forum memebers I need your support regarding a CP2102 USB/UART module. I have short-circuited TX and RX pins in order to get echo in a minicom console, but I can't manage to make it do anything. I have connected the module to my windows PC and it works fine with puTTY. dmesg [ 824.495144] usb 1...
by federico.human
Fri Feb 19, 2016 11:34 pm
Forum: General discussion
Topic: How to use the GPRS Sim908 fz1212 with my raspberry Pi 2?
Replies: 3
Views: 2128

Re: How to use the GPRS Sim908 fz1212 with my raspberry Pi 2

Have you made any progress? I am now coneccting the module but getting no response. EDIT: I successfully managed to get a response from the module using minicom. The conections are: - RPi TXD (physical 8) to SIM908 GPRS-RXD - RPi RXD (physical 10) to SIM908 GPRS-TXD - RPi 3.3v (physical 1) to SIM908...
by federico.human
Wed Jul 15, 2015 8:46 pm
Forum: General discussion
Topic: How to use the GPRS Sim908 fz1212 with my raspberry Pi 2?
Replies: 3
Views: 2128

Re: How to use the GPRS Sim908 fz1212 with my raspberry Pi 2

I bought the same module because of price/availability reasons.

Do you have any datasheet available?

Did you make any progress?

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