/* * 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 "libi2c.h" #include "hw/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; }