51 lines
1.4 KiB
Plaintext
51 lines
1.4 KiB
Plaintext
; Copyright 2022 Colin Lam, Ploopy Corporation
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;
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation, either version 3 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <http://www.gnu.org/licenses/>.
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.program i2s_read
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.side_set 2
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set x, 30 side 0b00
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left_channel:
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in pins, 1 side 0b11
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jmp x-- left_channel side 0b10
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in pins, 1 side 0b11
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set x, 30 side 0b10
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right_channel:
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in pins, 1 side 0b01
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jmp x--, right_channel side 0b00
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in pins, 1 side 0b01
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.program i2s_write
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.side_set 2
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set x, 30 side 0b01
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left_channel:
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out pins, 1 side 0b10
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jmp x-- left_channel side 0b11
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out pins, 1 side 0b10
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set x, 30 side 0b11
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right_channel:
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out pins, 1 side 0b00
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jmp x--, right_channel side 0b01
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out pins, 1 side 0b00
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