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49a5bfb9e5
If `rtt_get_alarm()` doesn't return the correct value, print expected and return value to ease debugging.
109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser General
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* Public License v2.1. See the file LICENSE in the top level directory for more
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* details.
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*/
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/**
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* @ingroup tests
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* @{
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*
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* @file
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* @brief Test for low-level Real Time Timer drivers
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*
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* This test will initialize the real-time timer and trigger an alarm printing
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* 'Hello' every 5 seconds
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*
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* @}
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <inttypes.h>
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#include "cpu.h"
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#include "periph_conf.h"
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#include "periph/rtt.h"
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#define TICKS_TO_WAIT (5 * RTT_FREQUENCY)
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static volatile uint32_t last;
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static const uint32_t _ticktest[] = { 1, 256, 65536, 16777216, 2147483648 };
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void cb(void *arg)
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{
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(void)arg;
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last += TICKS_TO_WAIT;
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last &= RTT_MAX_VALUE;
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rtt_set_alarm(last, cb, 0);
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puts("Hello");
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}
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int main(void)
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{
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puts("\nRIOT RTT low-level driver test");
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puts("RTT configuration:");
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printf("RTT_MAX_VALUE: 0x%08x\n", (unsigned)RTT_MAX_VALUE);
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printf("RTT_FREQUENCY: %u\n\n", (unsigned)RTT_FREQUENCY);
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puts("Testing the tick conversion");
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for (unsigned i = 0; i < ARRAY_SIZE(_ticktest); i++) {
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uint32_t sec = RTT_TICKS_TO_SEC(_ticktest[i]);
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uint32_t ticks = RTT_SEC_TO_TICKS(sec);
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printf("Trying to convert %" PRIu32 " to seconds and back\n",
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_ticktest[i]);
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/* account for rounding errors... */
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if ((ticks != 0) && (ticks != _ticktest[i])) {
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puts("error: TICK conversion not working as expected\n");
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return 1;
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}
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}
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puts("All ok\n");
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puts("Initializing the RTT driver");
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rtt_init();
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puts("This test will now display 'Hello' every 5 seconds\n");
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uint32_t now = rtt_get_counter();
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printf("RTT now: %" PRIu32 "\n", now);
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if (IS_USED(MODULE_PERIPH_RTT_SET_COUNTER)) {
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puts("Setting RTT timer to 1337");
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rtt_set_counter(1337);
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now = rtt_get_counter();
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printf("RTT now: %" PRIu32 "\n", now);
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if ((now < 1337) || (now > 1337 + (1 * RTT_FREQUENCY + 999) / 1000)) {
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puts("ERROR: rtt_set_counter() failed (off by more than 1 ms)");
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return 1;
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}
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else {
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puts("rtt_set_counter() PASSED");
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}
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}
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last = (now + TICKS_TO_WAIT) & RTT_MAX_VALUE;
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printf("Setting initial alarm to now + 5 s (%" PRIu32 ")\n", last);
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rtt_set_alarm(last, cb, 0);
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uint32_t tmp = rtt_get_alarm();
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if (tmp != last) {
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printf("Error: rtt_get_alarm() not working (expected %" PRIu32 " but got %" PRIu32 ")\n",
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last, tmp);
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return 1;
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}
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else {
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puts("rtt_get_alarm() PASSED");
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}
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puts("Done setting up the RTT, wait for many Hellos");
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return 0;
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}
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