Raspberry Pi Build HAT

Mix.install([
  {:circuits_uart, "~> 1.5"}
])

Show connected devices

Circuits.UART.enumerate

%{"ttyS0" => %{}}

{:ok, pid} = Circuits.UART.start_link()
Circuits.UART.open(pid, "ttyS0", speed: 115200, active: true)
Circuits.UART.configure(pid, framing: {Circuits.UART.Framing.Line, separator: "\r\n"})

:ok

Circuits.UART.write(pid, "\recho 0 ; list\r")

:ok

Circuits.UART.write(pid, "\rversion")

:ok

[{:messages, msgs}] = Process.info(self(), [:messages])
for m <- msgs, do: IO.puts(elem(m, 2))

Error

P0: connected to active ID 31
type 31
  nmodes =5
  nview  =3
  baud   =115200
  hwver  =30000000
  swver  =110C0000
  M0 POWER SI = PCT
    format count=1 type=0 chars=4 dp=0
    RAW: 00000000 00000064    PCT: 00000000 00000064    SI: 00000000 00000064
  M1 SPEED SI = PCT
    format count=1 type=0 chars=4 dp=0
    RAW: 00000000 00000064    PCT: 00000000 00000064    SI: 00000000 00000064
  M2 POS SI = DEG
    format count=1 type=2 chars=11 dp=0
    RAW: 00000000 00000168    PCT: 00000000 00000064    SI: 00000000 00000168
  M3 APOS SI = DEG
    format count=1 type=1 chars=3 dp=0
    RAW: 00000000 000000B3    PCT: 00000000 000000C8    SI: 00000000 000000B3
  M4 CALIB SI = CAL
    format count=2 type=1 chars=5 dp=0
    RAW: 00000000 00000E10    PCT: 00000000 00000064    SI: 00000000 00000E10
  M5 STATS SI = MIN
    format count=14 type=1 chars=5 dp=0
    RAW: 00000000 0000FFFF    PCT: 00000000 00000064    SI: 00000000 0000FFFF
  C0: M1+M2+M3
     speed PID: 00000FA0 00000064 00002328 000003CA
  position PID: 00002710 000003E8 0000C350 00000000
P1: connected to active ID 3D
type 3D
  nmodes =9
  nview  =0
  baud   =115200
  hwver  =30000000
  swver  =12040000
  M0 COLOR SI = IDX
    format count=1 type=0 chars=2 dp=0
    RAW: 00000000 0000000A    PCT: 00000000 00000064    SI: 00000000 0000000A
  M1 REFLT SI = PCT
    format count=1 type=0 chars=3 dp=0
    RAW: 00000000 00000064    PCT: 00000000 00000064    SI: 00000000 00000064
  M2 AMBI SI = PCT
    format count=1 type=0 chars=3 dp=0
    RAW: 00000000 00000064    PCT: 00000000 00000064    SI: 00000000 00000064
  M3 LIGHT SI = PCT
    format count=3 type=0 chars=3 dp=0
    RAW: 00000000 00000064    PCT: 00000000 00000064    SI: 00000000 00000064
  M4 RREFL SI = RAW
    format count=2 type=1 chars=4 dp=0
    RAW: 00000000 00000400    PCT: 00000000 00000064    SI: 00000000 00000400
  M5 RGB I SI = RAW
    format count=4 type=1 chars=4 dp=0
    RAW: 00000000 00000400    PCT: 00000000 00000064    SI: 00000000 00000400
  M6 HSV SI = RAW
    format count=3 type=1 chars=4 dp=0
    RAW: 00000000 00000168    PCT: 00000000 00000064    SI: 00000000 00000168
  M7 SHSV SI = RAW
    format count=4 type=1 chars=4 dp=0
    RAW: 00000000 00000168    PCT: 00000000 00000064    SI: 00000000 00000168
  M8 DEBUG SI = RAW
    format count=4 type=1 chars=4 dp=0
    RAW: 00000000 0000FFFF    PCT: 00000000 00000064    SI: 00000000 0000FFFF
  M9 CALIB SI = 
    format count=7 type=1 chars=5 dp=0
    RAW: 00000000 0000FFFF    PCT: 00000000 00000064    SI: 00000000 0000FFFF
  C0: M0+M1+M5+M6
     speed PID: 00000000 00000000 00000000 00000000
  position PID: 00000000 00000000 00000000 00000000
P2: no device detected
P3: no device detected


Error

Firmware version: 1674818421 2023-01-27T11:20:21+00:00

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 :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok,
 :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, :ok, ...]