Andreas Färber | 6e99890 | 2013-01-16 01:57:57 +0100 | [diff] [blame] | 1 | /* |
| 2 | * QTest testcase for the TMP105 temperature sensor |
| 3 | * |
| 4 | * Copyright (c) 2012 Andreas Färber |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 7 | * See the COPYING file in the top-level directory. |
| 8 | */ |
| 9 | #include "libqtest.h" |
| 10 | #include "libi2c.h" |
Paolo Bonzini | 0d09e41 | 2013-02-05 17:06:20 +0100 | [diff] [blame^] | 11 | #include "hw/misc/tmp105_regs.h" |
Andreas Färber | 6e99890 | 2013-01-16 01:57:57 +0100 | [diff] [blame] | 12 | |
| 13 | #include <glib.h> |
| 14 | |
| 15 | #define OMAP2_I2C_1_BASE 0x48070000 |
| 16 | |
| 17 | #define N8X0_ADDR 0x48 |
| 18 | |
| 19 | static I2CAdapter *i2c; |
| 20 | static uint8_t addr; |
| 21 | |
| 22 | static void send_and_receive(void) |
| 23 | { |
| 24 | uint8_t cmd[3]; |
| 25 | uint8_t resp[2]; |
| 26 | |
| 27 | cmd[0] = TMP105_REG_TEMPERATURE; |
| 28 | i2c_send(i2c, addr, cmd, 1); |
| 29 | i2c_recv(i2c, addr, resp, 2); |
| 30 | g_assert_cmpuint(((uint16_t)resp[0] << 8) | resp[1], ==, 0); |
| 31 | |
| 32 | cmd[0] = TMP105_REG_CONFIG; |
| 33 | cmd[1] = 0x0; /* matches the reset value */ |
| 34 | i2c_send(i2c, addr, cmd, 2); |
| 35 | i2c_recv(i2c, addr, resp, 1); |
| 36 | g_assert_cmphex(resp[0], ==, cmd[1]); |
| 37 | |
| 38 | cmd[0] = TMP105_REG_T_LOW; |
| 39 | cmd[1] = 0x12; |
| 40 | cmd[2] = 0x34; |
| 41 | i2c_send(i2c, addr, cmd, 3); |
| 42 | i2c_recv(i2c, addr, resp, 2); |
| 43 | g_assert_cmphex(resp[0], ==, cmd[1]); |
| 44 | g_assert_cmphex(resp[1], ==, cmd[2]); |
| 45 | |
| 46 | cmd[0] = TMP105_REG_T_HIGH; |
| 47 | cmd[1] = 0x42; |
| 48 | cmd[2] = 0x31; |
| 49 | i2c_send(i2c, addr, cmd, 3); |
| 50 | i2c_recv(i2c, addr, resp, 2); |
| 51 | g_assert_cmphex(resp[0], ==, cmd[1]); |
| 52 | g_assert_cmphex(resp[1], ==, cmd[2]); |
| 53 | } |
| 54 | |
| 55 | int main(int argc, char **argv) |
| 56 | { |
| 57 | QTestState *s = NULL; |
| 58 | int ret; |
| 59 | |
| 60 | g_test_init(&argc, &argv, NULL); |
| 61 | |
| 62 | s = qtest_start("-display none -machine n800"); |
| 63 | i2c = omap_i2c_create(OMAP2_I2C_1_BASE); |
| 64 | addr = N8X0_ADDR; |
| 65 | |
| 66 | qtest_add_func("/tmp105/tx-rx", send_and_receive); |
| 67 | |
| 68 | ret = g_test_run(); |
| 69 | |
| 70 | if (s) { |
| 71 | qtest_quit(s); |
| 72 | } |
| 73 | g_free(i2c); |
| 74 | |
| 75 | return ret; |
| 76 | } |