--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Thu, Mar 1, 2018 at 8:33 PM, Richard Wilbur <[email protected]> wrote: > On Wed, Feb 28, 2018 at 2:41 PM, Luke Kenneth Casson Leighton > <[email protected]> wrote: >> On Wed, Feb 28, 2018 at 9:09 PM, Richard Wilbur >> <[email protected]> wrote: >>> After realizing that you mentioned all 8 GPIO lines were on the 20-pin >>> expansion header J5 in the microdesktop case, I consulted the >>> microdesktop schematic for clues. >>> >>> I suspect the UART and EOMA I2C pins should be left to those functions. >> >> yehyeh. UART implicitly tested "if console works it's probably >> good" and I2C with a bus scan, i2c-utils, if 0x51 EEPROM shows up, >> it's good. >> >>> I have added tables to the "Testing"[*] page under the "GPIO" section >>> with my nominations for which pins to test and their mapping back to >>> A20 register bits. >> >> awesome. it'll have to be done manually for now, > > Are you suggesting that the testing "will have to be done manually"? the mapping created manually. sorry, i was thinking in terms of device-tree fragments... which don't exist yet. > What is the time frame of "for now"? when testing is required. > I'm trying to figure out which pins of the expansion header we want to > test, which pins of the processor those correspond to, and thus which > registers and bits of those registers we need to manipulate. That > determines how I need to interact with the GPIO driver. yehyeh. and determining that interaction "has to be done manually". if the devicetree fragment existed it would be a much simpler matter. >>> Luke, does this match your understanding of the GPIO pins to test? >> >> yep - GPIO_19,20,21 missing. > > In the following table (created while I was trying to figure out which > GPIO were connected in the EOMA standard) you will see that EOMA nets > GPIO(18)/EINT3, GPIO(19), GPIO(20), and GPIO(21) are not connected on > the microdesktop schematic v1.7 from J14. Thus they are at J14 but > not available anywhere else in the microdesktop v1.7. yep, forgot that. why the heck did i leave them out?? duur... > 1342 Fri 23 Feb 2018: > EOMA A20 DS113 microdesktop > Net Name ball register CON15 pin J14 pin > PWM B19 PI3 43 22 GPIO(10) > EINT0 A6 PH0 63 32 GPIO(11) > EINT1 B6 PH1 17 9 GPIO(16) > EINT2 B2 PH14 44 56 PWFBOUT GPIO(17) > EINT3 C2 PH18 39 20 NC GPIO(18) > GPIO(19) A1 PH15 40 54 NC > GPIO(20) C1 PH17 41 21 NC > GPIO(21) B1 PH16 42 55 NC > > We could obviously create a v1.8 schematic for the microdesktop and > connect these EOMA nets to a header, if desired. yes. damn. i think it's probably that i didn't update the micro-desktop schematic when i changed the EOMA68 spec from 24-pin to 18-pin RGB/TTL. l. _______________________________________________ arm-netbook mailing list [email protected] http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to [email protected]
