1 //==========================================================================
5 // Test CAN device driver timeouts
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
43 // Author(s): Uwe Kindler
44 // Contributors: Uwe Kindler
46 // Description: Timeout test of CAN device driver
47 //####DESCRIPTIONEND####
50 //===========================================================================
52 //===========================================================================
53 #include <pkgconf/system.h>
55 #include <cyg/infra/testcase.h> // test macros
56 #include <cyg/infra/cyg_ass.h> // assertion macros
57 #include <cyg/infra/diag.h>
59 // Package requirements
60 #if defined(CYGPKG_IO_CAN) && defined(CYGPKG_KERNEL)
62 #include <pkgconf/kernel.h>
63 #include <cyg/io/io.h>
64 #include <cyg/io/canio.h>
66 // Package option requirements
67 #if defined(CYGFUN_KERNEL_API_C)
69 #include <cyg/hal/hal_arch.h> // CYGNUM_HAL_STACK_SIZE_TYPICAL
70 #include <cyg/kernel/kapi.h>
72 // timeout support required
73 #if defined(CYGOPT_IO_CAN_SUPPORT_TIMEOUTS)
76 //===========================================================================
78 //===========================================================================
79 typedef struct st_thread_data
82 long stack[CYGNUM_HAL_STACK_SIZE_TYPICAL];
87 //===========================================================================
89 //===========================================================================
90 cyg_thread_entry_t can0_thread;
91 thread_data_t can0_thread_data;
94 //===========================================================================
96 //===========================================================================
97 #include "can_test_aux.inl" // include CAN test auxiliary functions
100 //===========================================================================
101 // Measure timeout time and compare it with RX timeout value
102 //===========================================================================
103 void check_timeout(cyg_io_handle_t hCAN, cyg_uint32 timeout)
105 cyg_can_event rx_event;
106 cyg_can_timeout_info_t timeout_info;
108 cyg_uint32 current_time_old;
109 cyg_uint32 current_time_new;
114 timeout_info.tx_timeout = timeout;
115 timeout_info.rx_timeout = timeout;
116 len = sizeof(timeout_info);
117 if (ENOERR != cyg_io_set_config(hCAN, CYG_IO_SET_CONFIG_CAN_TIMEOUT ,&timeout_info, &len))
119 CYG_TEST_FAIL_FINISH("Error writing config of /dev/can0");
122 diag_printf("read timeout: %d\n", timeout);
125 // if the return code is -EINTR then we know that a timout occured. Normally the
126 // receive queue should be empty so we can expect a timeout here
128 current_time_old = (cyg_uint32)cyg_current_time();
129 len = sizeof(rx_event);
130 if (-EINTR == cyg_io_read(hCAN, &rx_event, &len))
132 current_time_new = (cyg_uint32)cyg_current_time();
133 diff_time = current_time_new - current_time_old;
134 diag_printf("measured time: %d\n\n", diff_time);
135 diff_time = diff_time - timeout;
138 // If the measured value is smaller then the timeout value or if
139 // the difference is > 2 the we treat this as an error
141 if ((diff_time < 0) || (diff_time > 2))
143 CYG_TEST_FAIL_FINISH("Measured timeout time differs from /dev/can0 RX timeout value.");
148 CYG_TEST_FAIL_FINISH("Timeout expected for /dev/can0");
152 //===========================================================================
154 //===========================================================================
155 void can0_thread(cyg_addrword_t data)
157 cyg_io_handle_t hCAN0;
160 cyg_can_timeout_info_t timeout_info;
163 if (ENOERR != cyg_io_lookup("/dev/can0", &hCAN0))
165 CYG_TEST_FAIL_FINISH("Error opening /dev/can0");
169 // the first thing we need to do is to switch to nonblocking calls because
170 // function calls with timeout require nonblocking calls
173 len = sizeof(blocking);
174 if (ENOERR != cyg_io_set_config(hCAN0, CYG_IO_SET_CONFIG_READ_BLOCKING ,&blocking, &len))
176 CYG_TEST_FAIL_FINISH("Error changing config of /dev/can0");
180 // first we read the timeout configuration
182 len = sizeof(timeout_info);
183 if (ENOERR != cyg_io_get_config(hCAN0, CYG_IO_GET_CONFIG_CAN_TIMEOUT ,&timeout_info, &len))
185 CYG_TEST_FAIL_FINISH("Error reading config of /dev/can0");
189 // now we check the default timeout and a number of different timeout values
191 check_timeout(hCAN0, timeout_info.rx_timeout);
192 check_timeout(hCAN0, 10);
193 check_timeout(hCAN0, 20);
194 check_timeout(hCAN0, 50);
195 check_timeout(hCAN0, 100);
196 check_timeout(hCAN0, 200);
197 check_timeout(hCAN0, 500);
200 CYG_TEST_PASS_FINISH("can_timeout test OK");
212 // create the thread which access the CAN device driver
214 cyg_thread_create(4, can0_thread,
217 (void *) can0_thread_data.stack,
219 &can0_thread_data.hdl,
220 &can0_thread_data.obj);
222 cyg_thread_resume(can0_thread_data.hdl);
224 cyg_scheduler_start();
227 #else // CYGOPT_IO_CAN_SUPPORT_TIMEOUTS
228 #define N_A_MSG "Timeout support required for IO/CAN"
231 #else // CYGFUN_KERNEL_API_C
232 #define N_A_MSG "Needs kernel C API"
235 #else // CYGPKG_IO_CAN && CYGPKG_KERNEL
236 #define N_A_MSG "Needs IO/CAN and Kernel"
244 CYG_TEST_NA( N_A_MSG);