picade.pio

;
; Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
;
; SPDX-License-Identifier: BSD-3-Clause
;

.program picade_scan
.side_set 5
.wrap_target
    ; Gamepad Input
    nop           side 0b00001
    in   pins  8  side 0b00001
    nop           side 0b00010
    in   pins  8  side 0b00010
    nop           side 0b00100
    in   pins  8  side 0b00100
    nop           side 0b01000
    in   pins  8  side 0b01000
    nop           side 0b10000
    in   pins  8  side 0b10000
    ; Dummy bytes
    nop           side 0b00000
    in   pins  8  side 0b00000
    in   pins  8  side 0b00000
    in   pins  8  side 0b00000
.wrap