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by esa1966
Tue Nov 08, 2016 8:00 pm
Forum: Troubleshooting
Topic: Pi3: usb 1-1-port2: over-current change
Replies: 14
Views: 12000

Re: Pi3: usb 1-1-port2: over-current change

If AP2553 is a protection , then it should be throng enough and protected against short circuit.
It appears that this protection circuit isn't enough robust and instead of acting as a protection acts as a fuse :roll:
:?:
by esa1966
Wed Oct 26, 2016 6:27 am
Forum: Troubleshooting
Topic: Pi3: usb 1-1-port2: over-current change
Replies: 14
Views: 12000

Re: Pi3: usb 1-1-port2: over-current change

Hi, I get the same issue on a Pi 2 Model B. There is no more +5V power on the USB socket. I read the other posts which speak about AP2553 : https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=88789 https://93.93.130.214/forums/viewtopic.php?f=28&t=110164&p=760997 The signal on pin EN...
by esa1966
Thu Mar 19, 2015 8:50 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Interface w/ RFM69W wireless module via SPI?
Replies: 21
Views: 24931

Re: Interface w/ RFM69W wireless module via SPI?

Hi Eric, I use your test program (as node 11) with the "Sample RFM69 receiver/gateway sketch" from Low Power LAB as node 1. But, nothing appear to the gateway Logger. When I take the "Sample RFM69 sender/node sketch" (as node 12) from LPL then I receive the LOG on the gateway nod...
by esa1966
Sun Aug 10, 2014 5:38 pm
Forum: Python
Topic: PySerial-Detection of Data Reception
Replies: 0
Views: 734

PySerial-Detection of Data Reception

Hi, I'm using Pyserial with the example here : http://pyserial.sourceforge.net/examples.html#tcp-ip-serial-bridge In the serial routine reception (reader), I add a log file to check the RX data. def reader(self): """loop forever and copy serial->socket""" while self.ali...
by esa1966
Thu Jul 10, 2014 4:40 pm
Forum: General programming discussion
Topic: Serial Sniffer & Send XON
Replies: 6
Views: 7993

Re: Serial Sniffer & Send XON

In fact, the actual terminal server (tcp<->rs232) is transparent. The scada (master) speaks with the fire panel throught this TS. So if I replace the actual TS by the Rpi+ser2net, I'm sure that the problem will continue to happen. And as ser2net can also do a log (with separated rx &tx), it easi...
by esa1966
Thu Jul 10, 2014 6:20 am
Forum: General programming discussion
Topic: Serial Sniffer & Send XON
Replies: 6
Views: 7993

Re: Serial Sniffer & Send XON

Actually, I have two devices. One is a fire panel that doesn't answer as I suppose he received a XOFF. The other is a terminal server. So, in place of sniffing the COM between the two devices, I can plan to replace the actual server with a Rpi running "ser2net". The log can be made with th...
by esa1966
Tue Jul 08, 2014 7:38 pm
Forum: General programming discussion
Topic: Serial Sniffer & Send XON
Replies: 6
Views: 7993

Serial Sniffer & Send XON

Hi, I have a issue on a device and this will be my first step in LINUX world (and with the Raspberry Pi). The situation : I have two devices connected through RS232. One device regularly stop to communicate (No more data on TX). After analysis, a XON is the solution to relaunch the communication. So...
by esa1966
Mon Feb 03, 2014 7:52 am
Forum: Advanced users
Topic: I replaced the USB connector on my PI.
Replies: 38
Views: 21918

Re: I replaced the USB connector on my PI.

Nice post. I think about something similar. I'll make a expander interface for the PI. As I must have more power from the Pi USB (I want to use a USB disk and a WiFi to realize a Media player), I think the following : 1) Buy a USB header that I will place on the expander card. 2) Connect the GND and...
by esa1966
Wed Jan 22, 2014 8:51 pm
Forum: Media centres
Topic: LMS 7.8 On Raspberry Pi
Replies: 0
Views: 1379

LMS 7.8 On Raspberry Pi

Dear users, I search on the web to find a procedure to install LMS on the Rpi. I know the squeezeplug distribution but I don't want to reformat my SD card to install LMS. I found the following topics : http://allthingspi.webspace.virginmedia.com/lms.php for LMS 7.2 http://www.imagineict.co.uk/comput...
by esa1966
Sun Sep 15, 2013 10:19 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi µP addon
Replies: 2
Views: 971

Pi µP addon

Dear developers, At the beginning, I though to use only the Rpi ( a RS485 chip) to communicate on a RS485 Bus. But it's difficult to control the RS485 pin direction (RE/DE PIN) directly with Linux driver (There are a lot of discution on forums but finally, I don't want to go this way). A better way ...
by esa1966
Tue May 14, 2013 7:33 pm
Forum: Français
Topic: Modbus TCP/IP
Replies: 28
Views: 21022

Re: Modbus TCP/IP

Bonjour, Je profite de ce post encore actif pour vous demander de l'aide concernant les port série et plus précisément les interruptions du port série sous Linux. :? Il y a très longtemps et sous DOS, j'ai écris un code en C pour réaliser un Modbus Slave sur la porte série. J'explique un peu le prin...

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