12:36 <d1b2> <davoid> @ electronic_eel

12:37 <d1b2> <davoid> if you want a gpio on the glasgow (output) to be Hi-Z or say open-drain, pull-up. How would you do that? (i.e. the buffers have direction but not OE pins for output enable)

12:38 <d1b2> <Attie> set output to constant low, and use the oe signal as the output

12:38 <d1b2> <Attie> (= open drain equivelant)

12:39 <d1b2> <Attie> see the I2C applet as an example

13:27 <d1b2> <davoid> I don't see any oe signals in the schematic

13:27 <d1b2> <davoid> https://cdn.discordapp.com/attachments/613461005392936961/875007634514800670/unknown.png

13:28 <letle> ok

13:35 <letle> salut les gens

14:03 <DX-MON> davoid: when the direction is set to input, the B side is by definition high-Z as the definition of high-Z is no drivers, high impeedance, AKA an input buffer

14:05 <d1b2> <davoid> true true! sorry, I should have checked the datasheet.

15:32 <d1b2> <Attie> ah, oe is an internal signal, see https://github.com/GlasgowEmbedded/glasgow/blob/main/software/glasgow/gateware/i2c.py#L10-L53

15:39 <d1b2> <Attie> it's translated to the DIR signal, here (pad C7 is port A's DIR0): https://github.com/GlasgowEmbedded/glasgow/blob/main/software/glasgow/platform/rev_c12.py#L46-L49