/***************************************************************************
 * Copyright (c) 2026 Eclipse ThreadX contributors
 *
 * This program and the accompanying materials are made available under the
 * terms of the MIT License which is available at
 * https://opensource.org/licenses/MIT.
 *
 * AI Disclosure: This file was largely AI-generated by Codex (GPT-6-Sol).
 * The AI-generated portions may be considered public domain (CC0-1.0)
 * and not subject to the project's licence. The human contributor has
 * reviewed and verified that the code is correct.
 *
 * SPDX-License-Identifier: MIT and CC0-1.0
 ***************************************************************************/

#include "tx_api.h"
#include "uart.h"
#include "hwtimer.h"

#define TEST_TEXT_SIZE 160000u

static TX_THREAD test_thread;
static UCHAR test_stack[2048];
static char test_text[TEST_TEXT_SIZE + 1u];

/* Run the kernel with the board's normal interrupt setup. */
int main(void)
{
    tx_kernel_enter();
    return 0;
}

/* Print long enough to span several hardware timer intervals. */
static void test_entry(ULONG input)
{
    uint64_t start;
    uint64_t elapsed;
    ULONG ticks_before;
    ULONG ticks_after;
    size_t i;

    (void)input;
    for (i = 0u; i < TEST_TEXT_SIZE; i++)
    {
        test_text[i] = 'X';
    }
    test_text[TEST_TEXT_SIZE] = '\0';

    /* MISRA C:2012 Rule 11.4 deviation: the timer has a fixed MMIO address. */
    start = *(volatile uint64_t *)ERBIUM_MTIME;
    ticks_before = tx_time_get();
    (void)uart_puts(test_text);
    elapsed = *(volatile uint64_t *)ERBIUM_MTIME - start;
    ticks_after = tx_time_get();

    if (elapsed <= (2u * TICKNUM_PER_TIMER))
    {
        uart_puts("TEST_UART_TOO_SHORT");
    }
    else if ((ticks_after - ticks_before) < 2u)
    {
        uart_puts("TEST_UART_LOST_TICKS");
    }
    else
    {
        uart_puts("TEST_UART_NO_LOST_TICKS");
    }

    for (;;)
    {
    }
}

/* Start one test thread. */
void tx_application_define(void *first_unused_memory)
{
    (void)first_unused_memory;
    (void)tx_thread_create(&test_thread, "uart test", test_entry, 0u,
                           test_stack, sizeof(test_stack), 1u, 1u,
                           TX_NO_TIME_SLICE, TX_AUTO_START);
}