f800a7e303
Bug fixes and new examples Co-authored-by: Paulo Marques <pm@quant-insight.com> Co-authored-by: martin <admin@crossleys.biz> Co-authored-by: matiasilva <matias.silva@raspberrypi.com> Co-authored-by: Uri Shaked <uri@urishaked.com> Co-authored-by: Diego Solano <diegosolano@gmail.com> Co-authored-by: Andrew Scheller <andrew.scheller@raspberrypi.com> Co-authored-by: Adrian Hesketh <a-h@users.noreply.github.com> Co-authored-by: Emircan Gündoğdu <58917386+emircangun@users.noreply.github.com> Co-authored-by: Josef Wegner <80200012+josefwegner@users.noreply.github.com> Co-authored-by: pmarques-dev <72901351+pmarques-dev@users.noreply.github.com> Co-authored-by: Paulo Marques <pm@quant-insight.com> Co-authored-by: mjcross <mjcross@users.noreply.github.com> Co-authored-by: martin <admin@crossleys.biz>
34 lines
879 B
Plaintext
34 lines
879 B
Plaintext
;
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; Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
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;
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; SPDX-License-Identifier: BSD-3-Clause
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;
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.program addition
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; Pop two 32 bit integers from the TX FIFO, add them together, and push the
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; result to the TX FIFO. Autopush/pull should be disabled as we're using
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; explicit push and pull instructions.
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;
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; This program uses the two's complement identity x + y == ~(~x - y)
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pull
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mov x, ~osr
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pull
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mov y, osr
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jmp test ; this loop is equivalent to the following C code:
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incr: ; while (y--)
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jmp x-- test ; x--;
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test: ; This has the effect of subtracting y from x, eventually.
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jmp y-- incr
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mov isr, ~x
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push
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% c-sdk {
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static inline void addition_program_init(PIO pio, uint sm, uint offset) {
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pio_sm_config c = addition_program_get_default_config(offset);
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pio_sm_init(pio, sm, offset, &c);
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pio_sm_set_enabled(pio, sm, true);
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}
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%}
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