Commit 46a6603b authored by Julia Suvorova's avatar Julia Suvorova Committed by Peter Maydell
Browse files

tests/microbit-test: Check nRF51 UART functionality 



Some functional tests for:
    Basic reception/transmittion
    Suspending
    INTEN* registers

Signed-off-by: default avatarJulia Suvorova <jusual@mail.ru>
Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Acked-by: default avatarThomas Huth <thuth@redhat.com>
Message-id: 20190123120759.7162-4-jusual@mail.ru
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent 7cf19e73

tests/microbit-test.c

+89 −0
Original line number Diff line number Diff line
@@ -19,10 +19,98 @@ 
#include "libqtest.h"



#include "hw/arm/nrf51.h"

#include "hw/char/nrf51_uart.h"

#include "hw/gpio/nrf51_gpio.h"

#include "hw/timer/nrf51_timer.h"

#include "hw/i2c/microbit_i2c.h"



static bool uart_wait_for_event(QTestState *qts, uint32_t event_addr)

{

    time_t now, start = time(NULL);



    while (true) {

        if (qtest_readl(qts, event_addr) == 1) {

            qtest_writel(qts, event_addr, 0x00);

            return true;

        }



        /* Wait at most 10 minutes */

        now = time(NULL);

        if (now - start > 600) {

            break;

        }

        g_usleep(10000);

    }



    return false;

}



static void uart_rw_to_rxd(QTestState *qts, int sock_fd, const char *in,

                           char *out)

{

    int i, in_len = strlen(in);



    g_assert_true(write(sock_fd, in, in_len) == in_len);

    for (i = 0; i < in_len; i++) {

        g_assert_true(uart_wait_for_event(qts, NRF51_UART_BASE +

                                               A_UART_RXDRDY));

        out[i] = qtest_readl(qts, NRF51_UART_BASE + A_UART_RXD);

    }

    out[i] = '\0';

}



static void uart_w_to_txd(QTestState *qts, const char *in)

{

    int i, in_len = strlen(in);



    for (i = 0; i < in_len; i++) {

        qtest_writel(qts, NRF51_UART_BASE + A_UART_TXD, in[i]);

        g_assert_true(uart_wait_for_event(qts, NRF51_UART_BASE +

                                               A_UART_TXDRDY));

    }

}



static void test_nrf51_uart(void)

{

    int sock_fd;

    char s[10];

    QTestState *qts = qtest_init_with_serial("-M microbit", &sock_fd);



    g_assert_true(write(sock_fd, "c", 1) == 1);

    g_assert_cmphex(qtest_readl(qts, NRF51_UART_BASE + A_UART_RXD), ==, 0x00);



    qtest_writel(qts, NRF51_UART_BASE + A_UART_ENABLE, 0x04);

    qtest_writel(qts, NRF51_UART_BASE + A_UART_STARTRX, 0x01);



    g_assert_true(uart_wait_for_event(qts, NRF51_UART_BASE + A_UART_RXDRDY));

    qtest_writel(qts, NRF51_UART_BASE + A_UART_RXDRDY, 0x00);

    g_assert_cmphex(qtest_readl(qts, NRF51_UART_BASE + A_UART_RXD), ==, 'c');



    qtest_writel(qts, NRF51_UART_BASE + A_UART_INTENSET, 0x04);

    g_assert_cmphex(qtest_readl(qts, NRF51_UART_BASE + A_UART_INTEN), ==, 0x04);

    qtest_writel(qts, NRF51_UART_BASE + A_UART_INTENCLR, 0x04);

    g_assert_cmphex(qtest_readl(qts, NRF51_UART_BASE + A_UART_INTEN), ==, 0x00);



    uart_rw_to_rxd(qts, sock_fd, "hello", s);

    g_assert_true(memcmp(s, "hello", 5) == 0);



    qtest_writel(qts, NRF51_UART_BASE + A_UART_STARTTX, 0x01);

    uart_w_to_txd(qts, "d");

    g_assert_true(read(sock_fd, s, 10) == 1);

    g_assert_cmphex(s[0], ==, 'd');



    qtest_writel(qts, NRF51_UART_BASE + A_UART_SUSPEND, 0x01);

    qtest_writel(qts, NRF51_UART_BASE + A_UART_TXD, 'h');

    qtest_writel(qts, NRF51_UART_BASE + A_UART_STARTTX, 0x01);

    uart_w_to_txd(qts, "world");

    g_assert_true(read(sock_fd, s, 10) == 5);

    g_assert_true(memcmp(s, "world", 5) == 0);



    close(sock_fd);



    qtest_quit(qts);

}



/* Read a byte from I2C device at @addr from register @reg */

static uint32_t i2c_read_byte(QTestState *qts, uint32_t addr, uint32_t reg)

{
@@ -302,6 +390,7 @@ int main(int argc, char **argv) 
{

    g_test_init(&argc, &argv, NULL);



    qtest_add_func("/microbit/nrf51/uart", test_nrf51_uart);

    qtest_add_func("/microbit/nrf51/gpio", test_nrf51_gpio);

    qtest_add_func("/microbit/nrf51/timer", test_nrf51_timer);

    qtest_add_func("/microbit/microbit/i2c", test_microbit_i2c);