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Diffstat (limited to 'tests/tmp105-test.c')
| -rw-r--r-- | tests/tmp105-test.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/tests/tmp105-test.c b/tests/tmp105-test.c new file mode 100644 index 00000000..99db5381 --- /dev/null +++ b/tests/tmp105-test.c @@ -0,0 +1,169 @@ +/* + * 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 <glib.h> + +#include "libqtest.h" +#include "libqos/i2c.h" +#include "hw/misc/tmp105_regs.h" + +#define OMAP2_I2C_1_BASE 0x48070000 + +#define TMP105_TEST_ID "tmp105-test" +#define TMP105_TEST_ADDR 0x49 + +static I2CAdapter *i2c; + +static uint16_t tmp105_get8(I2CAdapter *i2c, uint8_t addr, uint8_t reg) +{ + uint8_t resp[1]; + i2c_send(i2c, addr, ®, 1); + i2c_recv(i2c, addr, resp, 1); + return resp[0]; +} + +static uint16_t tmp105_get16(I2CAdapter *i2c, uint8_t addr, uint8_t reg) +{ + uint8_t resp[2]; + i2c_send(i2c, addr, ®, 1); + i2c_recv(i2c, addr, resp, 2); + return (resp[0] << 8) | resp[1]; +} + +static void tmp105_set8(I2CAdapter *i2c, uint8_t addr, uint8_t reg, + uint8_t value) +{ + uint8_t cmd[2]; + uint8_t resp[1]; + + cmd[0] = reg; + cmd[1] = value; + i2c_send(i2c, addr, cmd, 2); + i2c_recv(i2c, addr, resp, 1); + g_assert_cmphex(resp[0], ==, cmd[1]); +} + +static void tmp105_set16(I2CAdapter *i2c, uint8_t addr, uint8_t reg, + uint16_t value) +{ + uint8_t cmd[3]; + uint8_t resp[2]; + + cmd[0] = reg; + cmd[1] = value >> 8; + cmd[2] = value & 255; + 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]); +} + +static int qmp_tmp105_get_temperature(const char *id) +{ + QDict *response; + int ret; + + response = qmp("{ 'execute': 'qom-get', 'arguments': { 'path': %s, " + "'property': 'temperature' } }", id); + g_assert(qdict_haskey(response, "return")); + ret = qdict_get_int(response, "return"); + QDECREF(response); + return ret; +} + +static void qmp_tmp105_set_temperature(const char *id, int value) +{ + QDict *response; + + response = qmp("{ 'execute': 'qom-set', 'arguments': { 'path': %s, " + "'property': 'temperature', 'value': %d } }", id, value); + g_assert(qdict_haskey(response, "return")); + QDECREF(response); +} + +#define TMP105_PRECISION (1000/16) +static void send_and_receive(void) +{ + uint16_t value; + + value = qmp_tmp105_get_temperature(TMP105_TEST_ID); + g_assert_cmpuint(value, ==, 0); + + value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE); + g_assert_cmphex(value, ==, 0); + + qmp_tmp105_set_temperature(TMP105_TEST_ID, 20000); + value = qmp_tmp105_get_temperature(TMP105_TEST_ID); + g_assert_cmpuint(value, ==, 20000); + + value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE); + g_assert_cmphex(value, ==, 0x1400); + + qmp_tmp105_set_temperature(TMP105_TEST_ID, 20938); /* 20 + 15/16 */ + value = qmp_tmp105_get_temperature(TMP105_TEST_ID); + g_assert_cmpuint(value, >=, 20938 - TMP105_PRECISION/2); + g_assert_cmpuint(value, <, 20938 + TMP105_PRECISION/2); + + /* Set config */ + tmp105_set8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG, 0x60); + value = tmp105_get8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG); + g_assert_cmphex(value, ==, 0x60); + + value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE); + g_assert_cmphex(value, ==, 0x14f0); + + /* Set precision to 9, 10, 11 bits. */ + tmp105_set8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG, 0x00); + value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE); + g_assert_cmphex(value, ==, 0x1480); + + tmp105_set8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG, 0x20); + value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE); + g_assert_cmphex(value, ==, 0x14c0); + + tmp105_set8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG, 0x40); + value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE); + g_assert_cmphex(value, ==, 0x14e0); + + /* stored precision remains the same */ + value = qmp_tmp105_get_temperature(TMP105_TEST_ID); + g_assert_cmpuint(value, >=, 20938 - TMP105_PRECISION/2); + g_assert_cmpuint(value, <, 20938 + TMP105_PRECISION/2); + + tmp105_set8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG, 0x60); + value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE); + g_assert_cmphex(value, ==, 0x14f0); + + tmp105_set16(i2c, TMP105_TEST_ADDR, TMP105_REG_T_LOW, 0x1234); + tmp105_set16(i2c, TMP105_TEST_ADDR, TMP105_REG_T_HIGH, 0x4231); +} + +int main(int argc, char **argv) +{ + QTestState *s = NULL; + int ret; + + g_test_init(&argc, &argv, NULL); + + s = qtest_start("-machine n800 " + "-device tmp105,bus=i2c-bus.0,id=" TMP105_TEST_ID + ",address=0x49"); + i2c = omap_i2c_create(OMAP2_I2C_1_BASE); + + qtest_add_func("/tmp105/tx-rx", send_and_receive); + + ret = g_test_run(); + + if (s) { + qtest_quit(s); + } + g_free(i2c); + + return ret; +} |