Revision as of 10:58, 13 August 2022 view source Immibis (talk \| contribs) 29 edits →‎Front LED: add GPIO register detail ← Older edit		Revision as of 11:04, 13 August 2022 view source Immibis (talk \| contribs) 29 edits →‎Small items: add vibration motor register Newer edit →
Line 193: === Small items === ==== Front LED and rumble motor ==== Simple on/off switches (GPIOs) controlled by software. ~~A simple on/off per colour channel. However it's not clear which pin is which channel as the schematic shows them two different ways.~~ To configure the LED pins for generic output, write 0xXXX111XX to address 0x01C20874. The X are bits that are irrelevant to LEDs. Default value for each X is 7, so write 0x77711177 if you're only using the LEDs and nothing else on this port. To configure the motor pin, write 0xXXXXX1XX to address 0x01C2086C. Then ~~three~~four of the bits in address 0x01C2087C control ~~the LED~~these ~~colours~~features - see below. Note the R/G/B channel order is mislabeled in the schematic (and in two different ways!) - the order below was actually tested. Line 209: \|- \| Blue \|\| 0x00040000 \|\| PD18 \|- \| Rumble motor \|\| 0x00000004 \|\| PD2 \|} ==== Sensors ==== Line 233 ⟶ 236: The power key goes to a signal called PWRON on the AXP803. ~~==== Vibration motor ====~~ ~~Vibration motor controlled by GPIO PD2. Motor and GPIO are both powered by DCDC1.~~ === 4G cellular modem ===

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