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Lee Lup Yuen 2022-10-08 21:20:50 +08:00
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@ -3016,10 +3016,6 @@ This is how our Zig Driver composes a MIPI DSI Long Packet...
https://github.com/lupyuen/pinephone-nuttx/blob/1262f46622dc07442cf2aa59a4bbc57871308ed1/display.zig#L140-L204
This code was tested in QEMU for Arm64 with GIC Version 2...
[lupyuen/incubator-nuttx/tree/gicv2](https://github.com/lupyuen/incubator-nuttx/tree/gicv2)
# Compose MIPI DSI Short Packet in Zig
For 1 or 2 bytes of data, our PinePhone Display Driver shall send MIPI DSI Short Packets (instead of Long Packets)...
@ -3048,6 +3044,43 @@ The Cyclic Redundancy Check is the 2-byte Packet Footer for Long Packets.
# Test PinePhone MIPI DSI Driver with QEMU
The above code for composing Long Packets and Short Packets was tested in QEMU for Arm64 with GIC Version 2...
[lupyuen/incubator-nuttx/tree/gicv2](https://github.com/lupyuen/incubator-nuttx/tree/gicv2)
Here's the log...
```text
NuttShell (NSH) NuttX-11.0.0-RC2
nsh> uname -a
NuttX 11.0.0-RC2 c938291 Oct 7 2022 16:54:31 arm64 qemu-a53
nsh> null
HELLO ZIG ON PINEPHONE!
Testing Compose Short Packet (Without Parameter)...
composeShortPacket: channel=0, cmd=0x5, len=1
Result:
05 11 00 36
Testing Compose Short Packet (With Parameter)...
composeShortPacket: channel=0, cmd=0x15, len=2
Result:
15 bc 4e 35
Testing Compose Long Packet...
composeLongPacket: channel=0, cmd=0x39, len=64
Result:
39 40 00 25 e9 82 10 06
05 a2 0a a5 12 31 23 37
83 04 bc 27 38 0c 00 03
00 00 00 0c 00 03 00 00
00 75 75 31 88 88 88 88
88 88 13 88 64 64 20 88
88 88 88 88 88 02 88 00
00 00 00 00 00 00 00 00
00 00 00 00 65 03
```
# Test Compose Packet
TODO
# Test Logs