On the PCB are hole for a serial port (TX/RX/GND).
I'm pretty sure this is or was for development reasons and/or installing a boot loader.
Anyone tried this out, soldering pins and connecting with a PC?
Serial port
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Serial port
DM15L S/# 10584 FW v25
DM42 S/# 01015 FW v3.5
DM42 S/# 01015 FW v3.5
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Re: Serial port
The levels are probably TTL rather than true RS-232 levels. If you connect a TTL serial port to it (even if you use a TTL to RS-232 converter), there's no support in firmware so how would you use it?Krauts In Space wrote: ↑Mon Feb 19, 2018 1:01 pmOn the PCB are hole for a serial port (TX/RX/GND).
I'm pretty sure this is or was for development reasons and/or installing a boot loader.
Anyone tried this out, soldering pins and connecting with a PC?
Tom L
Some people call me inept but I'm as ept as anybody!
DM10L SN: 059/100
DM41X SN: 00023 (Beta)
DM41X SN: 00506 (Shipping)
DM42 SN: 00025 (Beta)
DM42 SN: 00221 (Shipping)
WP43 SN: 00025 (Prototype)
Some people call me inept but I'm as ept as anybody!
DM10L SN: 059/100
DM41X SN: 00023 (Beta)
DM41X SN: 00506 (Shipping)
DM42 SN: 00025 (Beta)
DM42 SN: 00221 (Shipping)
WP43 SN: 00025 (Prototype)
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Re: Serial port
Michael told me they use JTAG for debugging. Could be those holes are for that, but I'm not sure. I just took a look at the board in my (beta) DM42, and I see no holes labeled TX or RX there, but there are four with names starting with JT.
We'll find out when they release the DM42 development tools, which I believe will happen in the not too distant future.
We'll find out when they release the DM42 development tools, which I believe will happen in the not too distant future.
Re: Serial port
Thomas Okken wrote: ↑Mon Feb 19, 2018 2:33 pmWe'll find out when they release the DM42 development tools, which I believe will happen in the not too distant future.
WP43 SN00000, 34S, and 31S for obvious reasons; HP-35, 45, ..., 35S, 15CE, DM16L S/N# 00093, DM42β SN:00041
Re: Serial port
I'm hoping they follow the lead of NumWorks, at least for the software (and most of it is yours anyway!).Thomas Okken wrote: ↑Mon Feb 19, 2018 2:33 pmWe'll find out when they release the DM42 development tools, which I believe will happen in the not too distant future.
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Re: Serial port
The plan was always that they would release the source code, with their modifications, per the GPL, and the necessary tools so that people can build, load, and debug their own firmware images. It has taken longer than I expected, but Michael has assured me that this will happen in the next few weeks.ijabbott wrote: ↑Mon Feb 19, 2018 9:37 pmI'm hoping they follow the lead of NumWorks, at least for the software (and most of it is yours anyway!).Thomas Okken wrote: ↑Mon Feb 19, 2018 2:33 pmWe'll find out when they release the DM42 development tools, which I believe will happen in the not too distant future.
Re: Serial port
The thing I read on the forum from a few months ago suggested they'd supply binary blobs to link the (modified versions of) Free42 against. That didn't sound very GPL compliant, but it depends how they have architected it.Thomas Okken wrote: ↑Mon Feb 19, 2018 11:14 pmThe plan was always that they would release the source code, with their modifications, per the GPL, and the necessary tools so that people can build, load, and debug their own firmware images. It has taken longer than I expected, but Michael has assured me that this will happen in the next few weeks.ijabbott wrote: ↑Mon Feb 19, 2018 9:37 pmI'm hoping they follow the lead of NumWorks, at least for the software (and most of it is yours anyway!).Thomas Okken wrote: ↑Mon Feb 19, 2018 2:33 pmWe'll find out when they release the DM42 development tools, which I believe will happen in the not too distant future.