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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 | ||
9956d428 UB |
90 | unsigned short divisor = calc_value & 0x3fff; |
91 | unsigned short fractional_bits = (calc_value >> 14); | |
92 | unsigned short clock = (calc_index & 0x200) ? 120 : 48; | |
93 | ||
94 | switch (ftdi->type) | |
95 | { | |
96 | case TYPE_232H: | |
97 | case TYPE_2232H: | |
98 | case TYPE_4232H: | |
99 | fractional_bits |= (calc_index & 0x100) ? 4 : 0; | |
100 | break; | |
101 | case TYPE_R: | |
102 | case TYPE_2232C: | |
103 | case TYPE_BM: | |
104 | fractional_bits |= (calc_index & 0x001) ? 4 : 0; | |
105 | break; | |
106 | default:; | |
107 | } | |
ac6944cc | 108 | // Aid debugging since this test is a generic function |
cb2a07f2 TJ |
109 | BOOST_CHECK_MESSAGE(res->actual_baudrate == calc_baudrate && res->divisor == divisor && res->fractional_bits == fractional_bits |
110 | && res->clock == clock, | |
c4517f98 | 111 | "\n\nERROR: baudrate calculation failed for --" << baudrate.first << " baud--. Details below: "); |
ac6944cc TJ |
112 | |
113 | BOOST_CHECK_EQUAL(res->actual_baudrate, calc_baudrate); | |
cb2a07f2 TJ |
114 | BOOST_CHECK_EQUAL(res->divisor, divisor); |
115 | BOOST_CHECK_EQUAL(res->fractional_bits, fractional_bits); | |
116 | BOOST_CHECK_EQUAL(res->clock, clock); | |
ac6944cc TJ |
117 | } |
118 | } | |
119 | ||
120 | BOOST_AUTO_TEST_CASE(TypeAMFixedBaudrates) | |
121 | { | |
122 | ftdi->type = TYPE_AM; | |
123 | ||
124 | map<int, calc_result> baudrates; | |
cb2a07f2 TJ |
125 | baudrates[300] = calc_result(300, 784, 2, 48); |
126 | baudrates[600] = calc_result(600, 904, 1, 48); | |
127 | baudrates[1200] = calc_result(1200, 452, 0, 48); | |
128 | baudrates[2400] = calc_result(2400, 226, 0, 48); | |
129 | baudrates[4800] = calc_result(4800, 625, 0, 48); | |
130 | baudrates[9600] = calc_result(9600, 312, 4, 48); | |
131 | baudrates[19200] = calc_result(19200, 156, 8, 48); | |
132 | baudrates[38400] = calc_result(38400, 78, 12, 48); | |
133 | baudrates[57600] = calc_result(57554, 52, 12, 48); | |
134 | baudrates[115200] = calc_result(115385, 26, 0, 48); | |
135 | baudrates[230400] = calc_result(230769, 13, 0, 48); | |
136 | baudrates[460800] = calc_result(461538, 6, 4, 48); | |
137 | baudrates[921600] = calc_result(923077, 3, 8, 48); | |
ac6944cc TJ |
138 | |
139 | test_baudrates(ftdi, baudrates); | |
140 | } | |
141 | ||
6645ac5e | 142 | BOOST_AUTO_TEST_CASE(TypeBMFixedBaudrates) |
ac6944cc | 143 | { |
3db4042e TJ |
144 | // Unify testing of chips behaving the same |
145 | std::vector<enum ftdi_chip_type> test_types; | |
146 | test_types.push_back(TYPE_BM); | |
147 | test_types.push_back(TYPE_2232C); | |
148 | test_types.push_back(TYPE_R); | |
ac6944cc TJ |
149 | |
150 | map<int, calc_result> baudrates; | |
cb2a07f2 TJ |
151 | baudrates[300] = calc_result(300, 784, 2, 48); |
152 | baudrates[600] = calc_result(600, 904, 1, 48); | |
153 | baudrates[1200] = calc_result(1200, 452, 0, 48); | |
154 | baudrates[2400] = calc_result(2400, 226, 0, 48); | |
155 | baudrates[4800] = calc_result(4800, 625, 0, 48); | |
156 | baudrates[9600] = calc_result(9600, 312, 4, 48); | |
157 | baudrates[19200] = calc_result(19200, 156, 8, 48); | |
158 | baudrates[38400] = calc_result(38400, 78, 12, 48); | |
c4a2bc3a TJ |
159 | baudrates[57600] = calc_result(57553, 52, 12, 48); |
160 | baudrates[115200] = calc_result(115384, 26, 0, 48); | |
cb2a07f2 TJ |
161 | baudrates[230400] = calc_result(230769, 13, 0, 48); |
162 | baudrates[460800] = calc_result(461538, 6, 4, 48); | |
c4a2bc3a | 163 | baudrates[921600] = calc_result(923076, 3, 8, 48); |
ac6944cc | 164 | |
3db4042e TJ |
165 | BOOST_FOREACH(const enum ftdi_chip_type &test_chip_type, test_types) |
166 | { | |
167 | ftdi->type = test_chip_type; | |
168 | test_baudrates(ftdi, baudrates); | |
169 | } | |
ac6944cc TJ |
170 | } |
171 | ||
6645ac5e | 172 | BOOST_AUTO_TEST_CASE(TypeHFixedBaudrates) |
ac6944cc | 173 | { |
3db4042e TJ |
174 | // Unify testing of chips behaving the same |
175 | std::vector<enum ftdi_chip_type> test_types; | |
176 | test_types.push_back(TYPE_2232H); | |
177 | test_types.push_back(TYPE_4232H); | |
178 | test_types.push_back(TYPE_232H); | |
ac6944cc TJ |
179 | |
180 | map<int, calc_result> baudrates; | |
cb2a07f2 TJ |
181 | baudrates[300] = calc_result(300, 784, 2, 48); |
182 | baudrates[600] = calc_result(600, 904, 1, 48); | |
c4a2bc3a TJ |
183 | baudrates[1200] = calc_result(1200, 784, 2, 48); |
184 | baudrates[2400] = calc_result(2400, 904, 1, 48); | |
185 | baudrates[4800] = calc_result(4800, 452, 0, 48); | |
186 | baudrates[9600] = calc_result(9600, 226, 0, 48); | |
187 | baudrates[19200] = calc_result(19200, 625, 0, 48); | |
188 | baudrates[38400] = calc_result(38400, 312, 4, 48); | |
189 | baudrates[57600] = calc_result(57588, 208, 4, 120); | |
190 | baudrates[115200] = calc_result(115246, 104, 12, 48); | |
191 | baudrates[230400] = calc_result(230215, 52, 12, 48); | |
192 | baudrates[460800] = calc_result(461538, 26, 0, 48); | |
193 | baudrates[921600] = calc_result(923076, 13, 0, 48); | |
ac6944cc | 194 | |
3db4042e TJ |
195 | BOOST_FOREACH(const enum ftdi_chip_type &test_chip_type, test_types) |
196 | { | |
197 | ftdi->type = test_chip_type; | |
198 | test_baudrates(ftdi, baudrates); | |
199 | } | |
a87a0712 TJ |
200 | } |
201 | ||
202 | BOOST_AUTO_TEST_SUITE_END() |