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2014-01-13
, 16:18
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#2
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trying to see if i can get a ssmple, or two. as they have a distributor close by
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2014-01-13
, 18:41
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#3
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Looks good! What about the software side - what kind of interface we would have to use with this SC16IS750 ? I mean do we have to write a library from scratch ?
Pardon my ignorance.. I'm not an HW expert and new to Jolla. What is TCVR ?
Pardon my ignorance.. I'm not an HW expert and new to Jolla. What is TCVR ?
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2014-01-13
, 18:45
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#4
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Originally Posted by phenoboy
tranciever
Looks good! What about the software side - what kind of interface we would have to use with this SC16IS750 ? I mean do we have to write a library from scratch ?
Pardon my ignorance.. I'm not an HW expert and new to Jolla. What is TCVR ?
the purpose - and interface is rs232/ infrared addition to communicate with serial devices or connect fx to retrieve logs from bootloader
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2014-01-13
, 23:45
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@ Espoo, Finland
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#5
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I should have all parts for the -750 version.. and some code ready, as this was used in one project to interface 232 touchscreen via I2C.
Only thing missing is time to tinker it..
Only thing missing is time to tinker it..
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2014-01-14
, 14:38
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#6
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Originally Posted by kimmoli
And, I just got a qoute that the connection close here is very interested in this, and wants to help where they can - So, all chips and technical assistance is 'almost' ready
I should have all parts for the -750 version.. and some code ready, as this was used in one project to interface 232 touchscreen via I2C.
Only thing missing is time to tinker it..
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2014-01-20
, 23:10
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@ Espoo, Finland
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#8
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update
V0.02 schematic. ready. then layout.
(The 232 transceiver changed to SP3203E -has separate logic supply for interfacing 1.8V and with more channels)
No leds, should be buffered as there is no outputs with enough drive-strength.
Signals available in connector
Last edited by kimmoli; 2014-01-21 at 19:28.
V0.02 schematic. ready. then layout.
(The 232 transceiver changed to SP3203E -has separate logic supply for interfacing 1.8V and with more channels)
No leds, should be buffered as there is no outputs with enough drive-strength.
Signals available in connector
- TXD -->
- RXD <--
- DTR -->
- RTS -->
- CTS <--
Last edited by kimmoli; 2014-01-21 at 19:28.
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2014-01-22
, 13:48
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#9
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I have seen some discussions about IRDA transmitter/receiver things?
Or are they talking just IR transmitters like in remote controllers?
IRDA shold be doable with this uart.
Or are they talking just IR transmitters like in remote controllers?
IRDA shold be doable with this uart.
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2014-01-22
, 13:51
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#10
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Thats what I plan, I believe irda is a thing missing, since N900 
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All times are GMT. The time now is 14:25.
I have given some toughts to this already...
--> either SC16IS750. Has 3.3V operation, but you'll need I2C levelconverter (e.g. PCA9517) and 1.8V regulator. Easier to interface to the 232 transceiver.
--> or SC16IS850L. Has 1.8V operation, no need for I2C level converter, but needs 1.8V regulator. and some tricks to interface to 232 transceiver.
Last edited by kimmoli; 2015-02-21 at 13:33. Reason: back to WIP