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Re: Trying to use irrecord for AT&T u-verse STB
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Re: Trying to use irrecord for AT&T u-verse STB
by GregP 203
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I have also been trying to create a config file for the Motorola VIP 1200 STB used by AT&T for U-verse service. Looking at the raw code using mode2 it seems like the RCMM protocol but the lengths for the pulses and spaces are different then described
at http://www.sbprojects.com/knowledge/ir/rcmm.htm, it seems like spaces with the length 150-200=00, 300-400=01,500-550=10 and 650-700=11.It also looks like it has 32bits.
I have also see that the numbers in the code will vary about 100 microseconds from one sample of the same button to anotherer sample(as shown belowwith button two).
Is this normal or does this indicate the receiver is set to the wrong carrier frequency? How can I change the carrier frequency of the receiver for use with the mode2 command? I know it can be changed in /etc/lircd.conf but that is loaded by lircd and mode2 does not need lircd.
"name 2
500 100 350 100 350 500 250 100 350 650 300 300 300 100 350 100 350 100 300 500 300 500 250 350 250 550 250 150 300 150 250 200 250 550 250" "name 2
550 50 350 100 350 500 300 100 300 700 250 350 250 150 300 100 350 100 350 500 250 500 300 300 300 500 250 150 300 150 300 150 300 500 250" ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ |
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Re: Trying to use irrecord for AT&T u-verse STB
by Christoph Bartelmus
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Hi!
GregP 203 "gregp.203@..." wrote: > I have also been trying to create a config file for the Motorola VIP 1200 > STB used by AT&T for U-verse service. Looking at the raw code using mode2 it [...] > with the length 150-200=00, 300-400=01,500-550=10 and 650-700=11.It also > looks like it has 32bits. > > I have also see that the numbers in the code will vary about 100 > microseconds from one sample of the same button to anotherer sample(as shown > belowwith button two). >From the signals I'm guessing that you use lirc_mceusb2. The hardware resolution is 50us, which might not be good enough to receive this kind of signal. > Is this normal or does this indicate the receiver is set to the wrong > carrier frequency? How can I change the carrier frequency of the receiver > for use with the mode2 command? I don't know any hardware that is able to change the receiver frequency. The frequency parameter in the config file only applies to the transmitter. Have you tried using the generic RCMM-32.conf file from the source package? Christoph ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ |
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Re: Trying to use irrecord for AT&T u-verse STB
by GregP 203
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Christoph,
Before I got your message, I had got out the old probescope ,connected a ir phototransistor to it and looked at the signal and realized the mceusb2 is not very accurate. The signal looks like 36khz but the lack of accuracy of the probescope it is hard to tell the difference between 36khz and 38khz. I did find that the signal header is 15 pulses of the carrier and then a space of about 10 pulses and each pair of bits was preceded by 6 pulses of the carrier. I got your message yesterday and and looked at the
RCMM-32.conf file and it is exactly what I had found, except for the toggle bit. I used RCMM-32.conf as a template with irrecord. I had set the eps to 18 because of the in accuracy of the mceusb2. I would get a false recording sometimes but I corrected it manually. Below is the configuration that works.
I tested all the buttons except for the ones related to DVR options since the STB I was testing it with did not have the DVR options.
This is configuration is for the Motorola VIP 1200 and
VIP 1216 STB provided by AT&T for their U-verse IPTV service
begin remote
name vip1200 bits 32 flags RCMM|CONST_LENGTH eps 18 aeps 100 header 417 278 three 167 778 two 167 611 one 167 444 zero 167 278 ptrail 167 gap 99817 toggle_bit_mask 0x8000 begin codes ZERO 0x23402600 ONE 0x2340A601 TWO 0x23402602 THREE 0x2340A603 FOUR 0x23402604 FIVE 0x2340A605 SIX 0x2340A606 SEVEN 0x2340A607 EIGHT 0x23402608 NINE 0x2340A609 LAST 0x2340260A POWER 0x2340A60C INFO 0x2340260F CHPG+ 0x2340A620 CHPG- 0x2340A621 FF 0x23402628 REW 0x2340A629 PLAY 0x2340262C PAUSE 0x23402630 STOP 0x2340A631 RECORD 0x23402637 A 0x2340A638 B 0x2340A639 RECORDEDTV 0x23402644 FWD 0x2340A64C REPLAY 0x2340264D MENU 0x2340A654 EXIT 0x2340A655 UP 0x2340A658 DOWN 0x23402659 LEFT 0x2340A65A RIGHT 0x2340A65B OK 0x2340A65C BACK 0x2340A683 C 0x2340A686 DELETE 0x2340A69E TVVIDEO 0x234026A8 GUIDE 0x234026CC ENTER 0x234026E1 VIDEOONDEMAND 0x2340A6F0 gointeractive 0x2340A6FD end codes end remote On 30 Oct 2007 08:39:00 +0100, Christoph Bartelmus <lirc@...> wrote:
Hi! ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ |
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