**** BEGIN LOGGING AT Sun Feb 18 03:00:01 2018 Feb 18 11:53:18 Hi Feb 18 11:55:18 how do i get started? Feb 18 11:58:41 is this about gsoc? if yes head over to #beagle-gsoc Feb 18 13:59:57 Hello. Feb 18 13:59:57 Is it an easy way to get access to I²C buss 0 or 2 on the BeagleBone Blue? Feb 18 15:33:16 peroyvib: https://docs.google.com/spreadsheets/d/1CK5c-Cs8G1RtzGo-J3VJsD9m5K-fp06AncgeYWsdjSU/view#gid=1569752740 Feb 18 15:33:34 See the "BBBlue" tab along the bottom Feb 18 16:05:16 myself: So I can pinmux the I²C for the IMU and barometer to access them on the UART1? Feb 18 16:05:16 What ar I2C.3 and I2C.4? Feb 18 16:05:31 they're configured to i2c by default on the blue Feb 18 16:06:07 pins 3 and 4 of the "I2C" header Feb 18 16:07:33 you can confirm the pinmux by running the blue version of my show-pins script: https://github.com/mvduin/bbb-pin-utils/tree/blue#show-pins (you need to pass the -v option to show pins that are not on external headers, such as the sensors i2c) Feb 18 16:07:53 uhh, access them on UART1 ? what do you mean? Feb 18 16:08:27 oh you mean get external access to the sensors i2c? no there's no easy way to do that Feb 18 16:08:29 Where can I access the signals electrically Feb 18 16:09:09 you can't, you'd have to find a spot where they're physically accessible on the pcb and solder onto that... the pull-up resistors might be a good spot Feb 18 16:09:45 yes I see. Feb 18 16:10:21 To bad, there was an error in the datasheet for a sensor I've got, and now I have two sensors with the same address. Feb 18 16:10:31 too' Feb 18 16:11:31 so you need an extra i2c bus? Feb 18 16:12:11 the linux kernel does have a bit-banging i2c driver that can use arbitrary gpios... Feb 18 16:12:20 obviously won't be hugely efficient Feb 18 16:12:27 yes, guess I could take an MCU and convert it to UART or something Feb 18 16:12:37 that might be better yes Feb 18 16:12:58 or use the pru cores (although they already have multiple responsibilities on the blue) Feb 18 16:12:59 thanks folks Feb 18 16:13:56 This project is a miniature mars-rover for young students, so it should be simple and stabel. Feb 18 16:14:01 stable Feb 18 16:17:20 neither of the sensors supports an alternate-address? That sucks. Feb 18 16:18:28 I like the bitbang idea though, just use that for the sensor you don't need to query very often Feb 18 16:20:22 well if it hogs the cpu during the entire transfer (I wouldn't be surprised if that's the case) then it might not be fun Feb 18 16:32:06 bitbanging slow busses like i2c, ugh Feb 18 16:50:57 There are also i2c muxes that do horrible weird passthrough stuff Feb 18 16:51:15 or you could use gpio to power the individual sensors up and down, or gate their i2c lines on and off a common bus Feb 18 16:59:57 using an i2c mux with a supported linux driver is actually not a bad idea Feb 18 17:14:57 I was thinking about the switching method actually. I don't want to use the GPIO pins to do I²C, also I may have used all of them for other stuff already. If I have to use both sensors I will use a MCU for switching or translating I²C to UART, CAN, SPI or something... Feb 18 17:16:38 well like myself said, there are i2c-controlled i2c muxes, e.g. PCA954x/PCA984x Feb 18 17:18:36 Not much left to control the mux, anyway I have to deliver the project on the 26., so I will not be able to get more parts before that. Feb 18 17:18:57 as in, it wouldn't require any more pins Feb 18 17:19:24 but yeah if you can't get the part then... Feb 18 17:23:16 No I couldn't, but I could make something to do it. Anyway there is more important things to do on the project than having both these sensors. Feb 18 17:23:33 Thanks anyway Feb 18 23:48:33 Hello! Feb 19 01:23:22 hello Feb 19 01:39:42 GenTooMan: Hey man. Feb 19 01:40:52 smoke...brb Feb 19 02:00:56 Hey...MotorBridgeCape and Python on the BBB? Feb 19 02:01:33 hi Feb 19 02:01:48 I have a question Feb 19 02:01:51 Shoot! Feb 19 02:02:25 Ask! Feb 19 02:02:31 And? Feb 19 02:02:33 I am trying to use the launchpad in win 10 Feb 19 02:02:39 Oops! Feb 19 02:02:52 This is for the BBB and variants. Feb 19 02:03:08 MSP w/ the BBB? Feb 19 02:03:22 and I am following the steps for but there is an error >>exit status 1 Error compiling for board MSP-EXP430G2 w/ MSP430G2452. Feb 19 02:03:33 msp Feb 19 02:03:48 Oh. Are you trying to connect it to a BBB? Feb 19 02:03:53 Or Pocket Beagle? Feb 19 02:04:47 the msp430g2553in20 Feb 19 02:05:01 with the usb connection Feb 19 02:05:04 andy: This is a chat for the BBB and beagleboard.org stuff. Feb 19 02:05:23 I know. Feb 19 02:05:30 I bet someone else might know better than me. Feb 19 02:05:35 ... Feb 19 02:05:43 I will give it time. I am sure someone will reply. Feb 19 02:05:59 ok Thank you ! Feb 19 02:06:27 I use the MSP and the BBB at times. You can connect them via...damn it. Feb 19 02:06:37 Why in the hell? Feb 19 02:09:23 I did not know you could connect via damn it :D Feb 19 02:10:32 Yep...it takes time but it is possible. Feb 19 02:10:45 andy what set are you use? CCS7.X? Feb 19 02:11:00 andy left. Feb 19 02:11:21 Ahh well I suppose it was off topic Feb 19 02:11:38 Yep...sort of. I thought he might want to connect the BBB to the MSP. Feb 19 02:11:51 ...or vice versa. Feb 19 02:12:47 It should be just two connections. You connect those via P9_11 and P9_13. Feb 19 02:13:06 i read it and therefore, it must be fact. Feb 19 02:13:50 ... Feb 19 02:14:08 I tried to connect my Arduino to my BBG the other day and got a bug on my PC. Feb 19 02:14:35 Odd book...but it could be a security flaw on my part. Feb 19 02:18:46 bug in your pc? heh have had weirder Feb 19 02:19:16 Yep. Feb 19 02:19:31 This damn thing showed up and said, "You better update." Feb 19 02:19:42 I say, I say, I say. Nope. Feb 19 02:20:26 GenTooMan: Are you still working on your Pocket Beagle Schematic stuff? Feb 19 02:35:58 set_ yes sadly Feb 19 02:36:11 Oh. Okay. I am ready. Give me a task! Feb 19 02:36:34 Name this or name that...get ideas for connections? I do-e for you, big-guy. Feb 19 02:37:04 GenTooMan: All jokes aside. If you want to retry what you were describing to me the other day, I will. Feb 19 02:37:32 ... Feb 19 02:37:39 set_ KiCAD is a scehmatic / PCB editor. Feb 19 02:37:50 I can only learn more. Okay. Feb 19 02:37:57 KiCAD. Got it. Feb 19 02:38:01 I think I have it on my computer. Feb 19 02:38:08 I need to install it. Feb 19 02:39:51 If you have the space it's a bit large latest stable I believe is 4.0.7 Feb 19 02:40:01 756M Feb 19 02:40:15 Issue #1: I can only get the "free" version. They only allow so many pages, I think. Feb 19 02:40:21 I have space. Feb 19 02:40:46 no issue KiCAD is Open so you can have 32 layers and a few hundred pages of schematic Feb 19 02:40:56 I searching my 'puter now. Oh? Feb 19 02:40:58 I was unaware. Feb 19 02:41:17 http://kicad-pcb.org/ Feb 19 02:41:34 Oh. Feb 19 02:41:38 Okay. Easy enough. Feb 19 02:42:57 Yep...705 MB. Feb 19 02:43:26 I must have had something different on my 'puter. I thought I had the KiCAD stuff. Feb 19 02:43:59 Anyway...it is ongoing and downloading. Feb 19 02:50:31 eagle? Feb 19 02:52:24 I forget. I could not find it. Feb 19 02:52:36 The Ubuntu version is downloading now. Feb 19 02:53:36 So it's the repackaged Debian. Fair enough you should read on how to get the libaries for schematic editing. That can be a bit tricky. Feb 19 02:53:48 Okay. Feb 19 02:54:24 So, on there site or w/ some GoOgLiNg? Feb 19 02:54:37 http://downloads.kicad-pcb.org/libraries/ Feb 19 02:54:40 Damn! Feb 19 02:54:58 It's mostly all there. Feb 19 02:55:00 Let me get this thing downloaded first. Feb 19 02:55:01 Okay. Feb 19 02:55:10 kind of big though Feb 19 02:55:28 It is okay. I have umpteen amounts of room on this old "geezer." Feb 19 02:57:09 I can git clone them...right? Feb 19 02:58:37 you can they belong in /usr/share/kicad/library Feb 19 02:58:43 Schematic symbol libraries? Feb 19 02:58:49 Okay. Feb 19 02:59:10 right clone them locally then use sudo to copy them to share directory (or something like that) Feb 19 02:59:21 Cool beans...will do. **** ENDING LOGGING AT Mon Feb 19 03:00:02 2018