Archipelago » qemu

/*

 * QTest testcase for the TMP105 temperature sensor

 *

 * Copyright (c) 2012 Andreas Färber

 *

 * This work is licensed under the terms of the GNU GPL, version 2 or later.

 * See the COPYING file in the top-level directory.

 */

#include "libqtest.h"

#include "libqos/i2c.h"

#include "hw/misc/tmp105_regs.h"

#include <glib.h>

#define OMAP2_I2C_1_BASE 0x48070000

#define N8X0_ADDR 0x48

static I2CAdapter *i2c;

static uint8_t addr;

static void send_and_receive(void)

{

    uint8_t cmd[3];

    uint8_t resp[2];

    cmd[0] = TMP105_REG_TEMPERATURE;

    i2c_send(i2c, addr, cmd, 1);

    i2c_recv(i2c, addr, resp, 2);

    g_assert_cmpuint(((uint16_t)resp[0] << 8) | resp[1], ==, 0);

    cmd[0] = TMP105_REG_CONFIG;

    cmd[1] = 0x0; /* matches the reset value */

    i2c_send(i2c, addr, cmd, 2);

    i2c_recv(i2c, addr, resp, 1);

    g_assert_cmphex(resp[0], ==, cmd[1]);

    cmd[0] = TMP105_REG_T_LOW;

    cmd[1] = 0x12;

    cmd[2] = 0x34;

    i2c_send(i2c, addr, cmd, 3);

    i2c_recv(i2c, addr, resp, 2);

    g_assert_cmphex(resp[0], ==, cmd[1]);

    g_assert_cmphex(resp[1], ==, cmd[2]);

    cmd[0] = TMP105_REG_T_HIGH;

    cmd[1] = 0x42;

    cmd[2] = 0x31;

    i2c_send(i2c, addr, cmd, 3);

    i2c_recv(i2c, addr, resp, 2);

    g_assert_cmphex(resp[0], ==, cmd[1]);

    g_assert_cmphex(resp[1], ==, cmd[2]);

}

int main(int argc, char **argv)

{

    QTestState *s = NULL;

    int ret;

    g_test_init(&argc, &argv, NULL);

    s = qtest_start("-display none -machine n800");

    i2c = omap_i2c_create(OMAP2_I2C_1_BASE);

    addr = N8X0_ADDR;

    qtest_add_func("/tmp105/tx-rx", send_and_receive);

    ret = g_test_run();

    if (s) {

        qtest_quit(s);

    }

    g_free(i2c);

    return ret;

}