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| 06:40.57 | devilsadvocate | ake too |
| 06:41.08 | devilsadvocate | sorry |
| 06:57.53 | methril|work | yo |
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| 12:27.45 | wmat | ~purl seen prpplague |
| 12:27.47 | purl | prpplague <n=dave@mail.americanmicrosystems.com> was last seen on IRC in channel #edev, 14h 25m 37s ago, saying: 'my hands are way too shakey for 0201's'. |
| 12:41.30 | Mirell | Hmm.. |
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| 13:46.18 | SiO2 | hi. |
| 13:47.43 | SiO2 | has anyone of you a openocd.cfg (for the latest version) for flashing the controller automatically? i have only old config, and they are not working. |
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| 14:24.21 | solar | SiO2: that *.cfg would depend on the device you are working on. |
| 14:25.32 | SiO2 | i know. but ther should be an way to tell openocd some commands (which i write normally in telnet) in an script by calling openocd. |
| 14:31.31 | SiO2 | ah. commands has to be in " " ". try and error help somtimes |
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| 14:57.53 | kergoth | morning |
| 14:58.35 | g1powermac_PB | morning kergoth |
| 15:01.23 | chouimat|work | morning |
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| 15:05.41 | Mirell | Mornin' |
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| 21:29.52 | workrat | greetings nerds |
| 21:31.30 | workrat | i dont suppose anyone here has any knowledge of SPI communication, would they? |
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| 21:55.40 | roxfan | workrat: what about it? |
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| 22:19.18 | workrat | say, for example, that i have a micro with only 4 remaining pins to use for SPI |
| 22:19.41 | workrat | and i will use it as master |
| 22:20.24 | workrat | i do not have any more pins to use as the slave select signal |
| 22:20.54 | workrat | (for reference, im using a silabs 8051) |
| 22:21.38 | workrat | the silabs stuff automatically assigns one pin as NSS despite the fact that it is master |
| 22:22.26 | workrat | would it be possible to set this NSS pin as a push-pull and use it as the slave control signal? |
| 22:22.51 | roxfan | so you need more than one slave? |
| 22:23.01 | workrat | no, just one slave |
| 22:23.11 | roxfan | then that should be enough... |
| 22:23.44 | workrat | so i connect the NSS of the slave to power? |
| 22:24.05 | roxfan | http://en.wikipedia.org/wiki/File:SPI_single_slave.svg |
| 22:24.33 | workrat | weird |
| 22:25.14 | workrat | the data sheet indicates that for full-duplex operation i need to use 5 pins on the master |
| 22:25.25 | roxfan | hmm |
| 22:25.54 | roxfan | what's the fifth pin used for? |
| 22:26.23 | workrat | well, the fifth pin is just a generic push-pull |
| 22:26.29 | workrat | on the master |
| 22:26.41 | workrat | the NSS pin is connected to Vdd on the master |
| 22:26.54 | roxfan | hm |
| 22:27.13 | workrat | and the push-pull is connected to the NSS of the slave |
| 22:28.20 | roxfan | i guess it's to force it into master mode... |
| 22:28.32 | roxfan | but can't it be done programmatically? |
| 22:28.39 | workrat | yeah, thats the thing |
| 22:28.47 | workrat | it IS done in the registers |
| 22:30.19 | roxfan | well, i guess try connecting nss to slave nss and toggle it (or set to always low) if you can |
| 22:31.00 | workrat | which leads into my other question |
| 22:31.03 | workrat | :p |
| 22:31.41 | workrat | dont you need to give each side some non-transfer time to load the new data into the shift registers? |
| 22:31.58 | workrat | which means nss has to be toggled on and off |
| 22:32.11 | roxfan | no, you toggle clock for that |
| 22:32.30 | workrat | :O |
| 22:32.44 | roxfan | nss is used to select a slave... but you have only one so you need to do it just once |
| 22:33.47 | workrat | couldnt i then just connect nss on the slave to ground? |
| 22:34.19 | roxfan | "If a single slave device is used, the SS pin may be fixed to logic low if the slave permits it. Some slaves require the falling edge (high->low transition) of the slave select to initiate an action [...]" |
| 22:34.43 | roxfan | try it and see i guess |
| 22:34.51 | workrat | ah, okay |
| 22:34.58 | workrat | thanks a lot |
| 22:36.21 | roxfan | have fun :) |
| 22:36.29 | workrat | ill try |
| 22:37.03 | workrat | i like how i connect to three servers and 6 channels every time i start up chatzilla now |
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