77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
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/*
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* QTest testcase for the TMP105 temperature sensor
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*
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* Copyright (c) 2012 Andreas Färber
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "libqtest.h"
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#include "libi2c.h"
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#include "hw/tmp105_regs.h"
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#include <glib.h>
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#define OMAP2_I2C_1_BASE 0x48070000
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#define N8X0_ADDR 0x48
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static I2CAdapter *i2c;
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static uint8_t addr;
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static void send_and_receive(void)
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{
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uint8_t cmd[3];
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uint8_t resp[2];
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cmd[0] = TMP105_REG_TEMPERATURE;
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i2c_send(i2c, addr, cmd, 1);
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i2c_recv(i2c, addr, resp, 2);
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g_assert_cmpuint(((uint16_t)resp[0] << 8) | resp[1], ==, 0);
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cmd[0] = TMP105_REG_CONFIG;
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cmd[1] = 0x0; /* matches the reset value */
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i2c_send(i2c, addr, cmd, 2);
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i2c_recv(i2c, addr, resp, 1);
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g_assert_cmphex(resp[0], ==, cmd[1]);
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cmd[0] = TMP105_REG_T_LOW;
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cmd[1] = 0x12;
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cmd[2] = 0x34;
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i2c_send(i2c, addr, cmd, 3);
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i2c_recv(i2c, addr, resp, 2);
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g_assert_cmphex(resp[0], ==, cmd[1]);
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g_assert_cmphex(resp[1], ==, cmd[2]);
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cmd[0] = TMP105_REG_T_HIGH;
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cmd[1] = 0x42;
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cmd[2] = 0x31;
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i2c_send(i2c, addr, cmd, 3);
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i2c_recv(i2c, addr, resp, 2);
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g_assert_cmphex(resp[0], ==, cmd[1]);
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g_assert_cmphex(resp[1], ==, cmd[2]);
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}
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int main(int argc, char **argv)
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{
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QTestState *s = NULL;
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int ret;
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g_test_init(&argc, &argv, NULL);
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s = qtest_start("-display none -machine n800");
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i2c = omap_i2c_create(OMAP2_I2C_1_BASE);
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addr = N8X0_ADDR;
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qtest_add_func("/tmp105/tx-rx", send_and_receive);
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ret = g_test_run();
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if (s) {
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qtest_quit(s);
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}
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g_free(i2c);
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return ret;
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}
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