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quadrature encoder: reduce PIO code size from 29 to 24 (#390)

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Co-authored-by: Paulo Marques <pm@quant-insight.com>
This commit is contained in:
pmarques-dev
2023-06-05 16:54:37 +01:00
committed by GitHub
parent 1c5d9aa567
commit 8df09c9a7c
2 changed files with 42 additions and 63 deletions
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8
pio/quadrature_encoder/quadrature_encoder.c
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@@ -1,5 +1,5 @@
/**
* Copyright (c) 2021 pmarques-dev @ github
* Copyright (c) 2021-2023 pmarques-dev @ github
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -44,8 +44,10 @@ int main() {
PIO pio = pio0;
const uint sm = 0;
uint offset = pio_add_program(pio, &quadrature_encoder_program);
quadrature_encoder_program_init(pio, sm, offset, PIN_AB, 0);
// we don't really need to keep the offset, as this program must be loaded
// at offset 0
pio_add_program(pio, &quadrature_encoder_program);
quadrature_encoder_program_init(pio, sm, PIN_AB, 0);
while (1) {
// note: thanks to two's complement arithmetic delta will always