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a87a0712 TJ |
1 | /**@file |
2 | @brief Test baudrate calculator code | |
3 | ||
4 | @author Thomas Jarosch | |
5 | */ | |
6 | ||
7 | /*************************************************************************** | |
8 | * * | |
9 | * This program is free software; you can redistribute it and/or modify * | |
10 | * it under the terms of the GNU Lesser General Public License * | |
11 | * version 2.1 as published by the Free Software Foundation; * | |
12 | * * | |
13 | ***************************************************************************/ | |
14 | ||
ac6944cc TJ |
15 | #include <ftdi.h> |
16 | ||
a87a0712 TJ |
17 | #define BOOST_TEST_DYN_LINK |
18 | #include <boost/test/unit_test.hpp> | |
ac6944cc | 19 | #include <boost/foreach.hpp> |
3db4042e | 20 | #include <vector> |
ac6944cc TJ |
21 | #include <map> |
22 | ||
23 | using namespace std; | |
24 | ||
25 | extern "C" int convert_baudrate_UT_export(int baudrate, struct ftdi_context *ftdi, | |
26 | unsigned short *value, unsigned short *index); | |
27 | ||
28 | /// Basic initialization of libftdi for every test | |
29 | class BaseFTDIFixture | |
30 | { | |
31 | protected: | |
32 | ftdi_context *ftdi; | |
33 | ||
34 | public: | |
35 | BaseFTDIFixture() | |
36 | : ftdi(NULL) | |
37 | { | |
38 | ftdi = ftdi_new(); | |
39 | } | |
40 | ||
41 | ~BaseFTDIFixture() | |
42 | { | |
43 | delete ftdi; | |
44 | ftdi = NULL; | |
45 | } | |
46 | }; | |
a87a0712 | 47 | |
c4517f98 | 48 | BOOST_FIXTURE_TEST_SUITE(Baudrate, BaseFTDIFixture) |
a87a0712 | 49 | |
ac6944cc TJ |
50 | /// Helper class to store the convert_baudrate_UT_export result |
51 | struct calc_result | |
a87a0712 | 52 | { |
ac6944cc | 53 | int actual_baudrate; |
cb2a07f2 TJ |
54 | unsigned short divisor; |
55 | unsigned short fractional_bits; | |
56 | unsigned short clock; | |
ac6944cc | 57 | |
cb2a07f2 | 58 | calc_result(int actual, unsigned short my_divisor, unsigned short my_fractional_bits, unsigned short my_clock) |
ac6944cc | 59 | : actual_baudrate(actual) |
cb2a07f2 TJ |
60 | , divisor(my_divisor) |
61 | , fractional_bits(my_fractional_bits) | |
62 | , clock(my_clock) | |
ac6944cc TJ |
63 | { |
64 | } | |
65 | ||
66 | calc_result() | |
67 | : actual_baudrate(0) | |
cb2a07f2 TJ |
68 | , divisor(0) |
69 | , fractional_bits(0) | |
70 | , clock(0) | |
ac6944cc TJ |
71 | { |
72 | } | |
73 | }; | |
74 | ||
75 | /** | |
76 | * @brief Test convert_baudrate code against a list of baud rates | |
77 | * | |
78 | * @param baudrates Baudrates to check | |
79 | **/ | |
80 | static void test_baudrates(ftdi_context *ftdi, const map<int, calc_result> &baudrates) | |
81 | { | |
82 | typedef std::pair<int, calc_result> baudrate_type; | |
83 | BOOST_FOREACH(const baudrate_type &baudrate, baudrates) | |
84 | { | |
85 | unsigned short calc_value = 0, calc_index = 0; | |
86 | int calc_baudrate = convert_baudrate_UT_export(baudrate.first, ftdi, &calc_value, &calc_index); | |
87 | ||
88 | const calc_result *res = &baudrate.second; | |
89 | ||
cb2a07f2 TJ |
90 | unsigned short divisor = calc_value & 0x3ff; |
91 | unsigned short fractional_bits = (calc_index & 0x100) ? 4 : (calc_value >> 12); | |
92 | unsigned short clock = (calc_index & 0x100) ? 120 : 48; | |
93 | ||
ac6944cc | 94 | // Aid debugging since this test is a generic function |
cb2a07f2 TJ |
95 | BOOST_CHECK_MESSAGE(res->actual_baudrate == calc_baudrate && res->divisor == divisor && res->fractional_bits == fractional_bits |
96 | && res->clock == clock, | |
c4517f98 | 97 | "\n\nERROR: baudrate calculation failed for --" << baudrate.first << " baud--. Details below: "); |
ac6944cc TJ |
98 | |
99 | BOOST_CHECK_EQUAL(res->actual_baudrate, calc_baudrate); | |
cb2a07f2 TJ |
100 | BOOST_CHECK_EQUAL(res->divisor, divisor); |
101 | BOOST_CHECK_EQUAL(res->fractional_bits, fractional_bits); | |
102 | BOOST_CHECK_EQUAL(res->clock, clock); | |
ac6944cc TJ |
103 | } |
104 | } | |
105 | ||
106 | BOOST_AUTO_TEST_CASE(TypeAMFixedBaudrates) | |
107 | { | |
108 | ftdi->type = TYPE_AM; | |
109 | ||
110 | map<int, calc_result> baudrates; | |
cb2a07f2 TJ |
111 | baudrates[300] = calc_result(300, 784, 2, 48); |
112 | baudrates[600] = calc_result(600, 904, 1, 48); | |
113 | baudrates[1200] = calc_result(1200, 452, 0, 48); | |
114 | baudrates[2400] = calc_result(2400, 226, 0, 48); | |
115 | baudrates[4800] = calc_result(4800, 625, 0, 48); | |
116 | baudrates[9600] = calc_result(9600, 312, 4, 48); | |
117 | baudrates[19200] = calc_result(19200, 156, 8, 48); | |
118 | baudrates[38400] = calc_result(38400, 78, 12, 48); | |
119 | baudrates[57600] = calc_result(57554, 52, 12, 48); | |
120 | baudrates[115200] = calc_result(115385, 26, 0, 48); | |
121 | baudrates[230400] = calc_result(230769, 13, 0, 48); | |
122 | baudrates[460800] = calc_result(461538, 6, 4, 48); | |
123 | baudrates[921600] = calc_result(923077, 3, 8, 48); | |
ac6944cc TJ |
124 | |
125 | test_baudrates(ftdi, baudrates); | |
126 | } | |
127 | ||
3db4042e | 128 | BOOST_AUTO_TEST_CASE(Type_BM_232C_R_FixedBaudrates) |
ac6944cc | 129 | { |
3db4042e TJ |
130 | // Unify testing of chips behaving the same |
131 | std::vector<enum ftdi_chip_type> test_types; | |
132 | test_types.push_back(TYPE_BM); | |
133 | test_types.push_back(TYPE_2232C); | |
134 | test_types.push_back(TYPE_R); | |
ac6944cc TJ |
135 | |
136 | map<int, calc_result> baudrates; | |
cb2a07f2 TJ |
137 | baudrates[300] = calc_result(300, 784, 2, 48); |
138 | baudrates[600] = calc_result(600, 904, 1, 48); | |
139 | baudrates[1200] = calc_result(1200, 452, 0, 48); | |
140 | baudrates[2400] = calc_result(2400, 226, 0, 48); | |
141 | baudrates[4800] = calc_result(4800, 625, 0, 48); | |
142 | baudrates[9600] = calc_result(9600, 312, 4, 48); | |
143 | baudrates[19200] = calc_result(19200, 156, 8, 48); | |
144 | baudrates[38400] = calc_result(38400, 78, 12, 48); | |
c4a2bc3a TJ |
145 | baudrates[57600] = calc_result(57553, 52, 12, 48); |
146 | baudrates[115200] = calc_result(115384, 26, 0, 48); | |
cb2a07f2 TJ |
147 | baudrates[230400] = calc_result(230769, 13, 0, 48); |
148 | baudrates[460800] = calc_result(461538, 6, 4, 48); | |
c4a2bc3a | 149 | baudrates[921600] = calc_result(923076, 3, 8, 48); |
ac6944cc | 150 | |
3db4042e TJ |
151 | BOOST_FOREACH(const enum ftdi_chip_type &test_chip_type, test_types) |
152 | { | |
153 | ftdi->type = test_chip_type; | |
154 | test_baudrates(ftdi, baudrates); | |
155 | } | |
ac6944cc TJ |
156 | } |
157 | ||
3db4042e | 158 | BOOST_AUTO_TEST_CASE(Type_x232H_FixedBaudrates) |
ac6944cc | 159 | { |
3db4042e TJ |
160 | // Unify testing of chips behaving the same |
161 | std::vector<enum ftdi_chip_type> test_types; | |
162 | test_types.push_back(TYPE_2232H); | |
163 | test_types.push_back(TYPE_4232H); | |
164 | test_types.push_back(TYPE_232H); | |
ac6944cc TJ |
165 | |
166 | map<int, calc_result> baudrates; | |
cb2a07f2 TJ |
167 | baudrates[300] = calc_result(300, 784, 2, 48); |
168 | baudrates[600] = calc_result(600, 904, 1, 48); | |
c4a2bc3a TJ |
169 | baudrates[1200] = calc_result(1200, 784, 2, 48); |
170 | baudrates[2400] = calc_result(2400, 904, 1, 48); | |
171 | baudrates[4800] = calc_result(4800, 452, 0, 48); | |
172 | baudrates[9600] = calc_result(9600, 226, 0, 48); | |
173 | baudrates[19200] = calc_result(19200, 625, 0, 48); | |
174 | baudrates[38400] = calc_result(38400, 312, 4, 48); | |
175 | baudrates[57600] = calc_result(57588, 208, 4, 120); | |
176 | baudrates[115200] = calc_result(115246, 104, 12, 48); | |
177 | baudrates[230400] = calc_result(230215, 52, 12, 48); | |
178 | baudrates[460800] = calc_result(461538, 26, 0, 48); | |
179 | baudrates[921600] = calc_result(923076, 13, 0, 48); | |
ac6944cc | 180 | |
3db4042e TJ |
181 | BOOST_FOREACH(const enum ftdi_chip_type &test_chip_type, test_types) |
182 | { | |
183 | ftdi->type = test_chip_type; | |
184 | test_baudrates(ftdi, baudrates); | |
185 | } | |
a87a0712 TJ |
186 | } |
187 | ||
188 | BOOST_AUTO_TEST_SUITE_END() |