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| notthetup | whoops.. my bouncer playback buffer was too short, i missed the beginning of that. | 01:24 |
|---|---|---|
| edunham | notthetup: here have some scrollback https://pastebin.osuosl.org/47896/ | 01:25 |
| tpb | Title: #47896 OSL Pastebin (at pastebin.osuosl.org) | 01:25 |
| edunham | (that's everything from the last time you talked till you commented on the bouncer problem) | 01:25 |
| notthetup | ok.. so I didn't miss anything :p | 01:25 |
| edunham | yeah i think the 'and' was a 'send | 01:26 |
| edunham | ' | 01:26 |
| notthetup | i thought mithro had said something before 'and an' :P | 01:26 |
| notthetup | thanks! | 01:26 |
| notthetup | right! | 01:26 |
| notthetup | ok | 01:26 |
| notthetup | I saw the openocd method. I'll try that later. I have a STLink2, let me see if that can work. | 01:26 |
| mithro | s/and an email/send an email/ | 01:26 |
| mithro | notthetup: STLink2 also works | 01:26 |
| notthetup | I'm basically trying to make a power draw logger. | 01:27 |
| notthetup | something that can measure and draw voltage and current (DC) using the INA260 | 01:27 |
| notthetup | I saw TOMU and thought that EFM32HG would be a nice uC to get the data from I2C to USB | 01:27 |
| notthetup | I need to improve on the documentation, but currently too excited to get the EFM32 to work | 01:28 |
| notthetup | I also have a suspicion that I might have damaged the pins by connecting the Bootloader UART TX,RX pins without any power. | 01:35 |
| dwg[m] | So, I did have time to reflash the bootloader yet | 01:44 |
| dwg[m] | do I need to worry about serial voltages for that? | 01:44 |
| dwg[m] | i.e. can I use a random usb<->rs232 adapter, or will that fry the tomu and I need to find a ttl-voltage serial doodad | 01:44 |
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| notthetup | I believe it has to be a 3.3V output level on the converter | 02:13 |
| dwg[m] | notthetup: ta. I suspected so. | 02:13 |
| notthetup | The IO pins don't seem to be 5V tolerant :( | 02:13 |
| dwg[m] | hence the suggestion of using a raspi | 02:14 |
| dwg[m] | heh, let alone 25V rs232 standard | 02:14 |
| notthetup | wasn't it +-15V? | 02:16 |
| dwg[m] | uh, maybe | 02:16 |
| dwg[m] | I don't really know | 02:16 |
| dwg[m] | much too much, in any case | 02:16 |
| notthetup | I actually have a device which needs that.. The USB converter for that is hard to come by :P | 02:16 |
| notthetup | and expensive :( | 02:17 |
| dwg[m] | oh.. I assumed usb converters used the old-school standard voltage | 02:17 |
| notthetup | Most of the ones I see these days are 5V or 3.3V | 02:18 |
| dwg[m] | well, according to wikipedia the original standard allowed anything between +3..15V and -3..-15V, then was extended in a revision to 3..25 | 02:19 |
| notthetup | oh wow ok | 02:20 |
| notthetup | The one I have does 3.3V on the TX,RX lines but has a 5V power signal as well | 02:26 |
| dwg[m] | sounds like borrowing a raspi is probably the easiest/safest option to flash the tomu | 04:47 |
| dwg[m] | my own raspi being in a different state from me and the tomu... | 04:47 |
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