36 lines
881 B
C
36 lines
881 B
C
/**
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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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#include <stdlib.h>
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#include <stdio.h>
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#include "pico/stdlib.h"
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#include "hardware/pio.h"
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#include "addition.pio.h"
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// Pop quiz: how many additions does the processor do when calling this function
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uint32_t do_addition(PIO pio, uint sm, uint32_t a, uint32_t b) {
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pio_sm_put_blocking(pio, sm, a);
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pio_sm_put_blocking(pio, sm, b);
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return pio_sm_get_blocking(pio, sm);
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}
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int main() {
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stdio_init_all();
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PIO pio = pio0;
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uint sm = 0;
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uint offset = pio_add_program(pio, &addition_program);
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addition_program_init(pio, sm, offset);
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printf("Doing some random additions:\n");
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for (int i = 0; i < 10; ++i) {
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uint a = rand() % 100;
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uint b = rand() % 100;
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printf("%u + %u = %u\n", a, b, do_addition(pio, sm, a, b));
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}
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}
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