| /**@file |
| @brief Test baudrate calculator code |
| |
| @author Thomas Jarosch and Uwe Bonnes |
| */ |
| |
| /*************************************************************************** |
| * * |
| * This program is free software; you can redistribute it and/or modify * |
| * it under the terms of the GNU Lesser General Public License * |
| * version 2.1 as published by the Free Software Foundation; * |
| * * |
| ***************************************************************************/ |
| |
| #include <ftdi.h> |
| |
| #define BOOST_TEST_DYN_LINK |
| #include <boost/test/unit_test.hpp> |
| #include <boost/foreach.hpp> |
| #include <vector> |
| #include <map> |
| #include <math.h> |
| |
| using namespace std; |
| |
| extern "C" int convert_baudrate_UT_export(int baudrate, struct ftdi_context *ftdi, |
| unsigned short *value, unsigned short *index); |
| |
| /// Basic initialization of libftdi for every test |
| class BaseFTDIFixture |
| { |
| protected: |
| ftdi_context *ftdi; |
| |
| public: |
| BaseFTDIFixture() |
| : ftdi(NULL) |
| { |
| ftdi = ftdi_new(); |
| } |
| |
| virtual ~BaseFTDIFixture() |
| { |
| delete ftdi; |
| ftdi = NULL; |
| } |
| }; |
| |
| BOOST_FIXTURE_TEST_SUITE(Baudrate, BaseFTDIFixture) |
| |
| /// Helper class to store the convert_baudrate_UT_export result |
| struct calc_result |
| { |
| int actual_baudrate; |
| unsigned short divisor; |
| unsigned short fractional_bits; |
| unsigned short clock; |
| |
| calc_result(int actual, unsigned short my_divisor, unsigned short my_fractional_bits, unsigned short my_clock) |
| : actual_baudrate(actual) |
| , divisor(my_divisor) |
| , fractional_bits(my_fractional_bits) |
| , clock(my_clock) |
| { |
| } |
| |
| calc_result() |
| : actual_baudrate(0) |
| , divisor(0) |
| , fractional_bits(0) |
| , clock(0) |
| { |
| } |
| }; |
| |
| /** |
| * @brief Test convert_baudrate code against a list of baud rates |
| * |
| * @param baudrates Baudrates to check |
| **/ |
| static void test_baudrates(ftdi_context *ftdi, const map<int, calc_result> &baudrates) |
| { |
| typedef std::pair<int, calc_result> baudrate_type; |
| BOOST_FOREACH(const baudrate_type &baudrate, baudrates) |
| { |
| unsigned short calc_value = 0, calc_index = 0; |
| int calc_baudrate = convert_baudrate_UT_export(baudrate.first, ftdi, &calc_value, &calc_index); |
| |
| const calc_result *res = &baudrate.second; |
| |
| unsigned short divisor = calc_value & 0x3fff; |
| unsigned short fractional_bits = (calc_value >> 14); |
| unsigned short clock = (calc_index & 0x200) ? 120 : 48; |
| |
| switch (ftdi->type) |
| { |
| case TYPE_232H: |
| case TYPE_2232H: |
| case TYPE_4232H: |
| fractional_bits |= (calc_index & 0x100) ? 4 : 0; |
| break; |
| case TYPE_R: |
| case TYPE_2232C: |
| case TYPE_BM: |
| fractional_bits |= (calc_index & 0x001) ? 4 : 0; |
| break; |
| default:; |
| } |
| |
| // Aid debugging since this test is a generic function |
| BOOST_CHECK_MESSAGE(res->actual_baudrate == calc_baudrate && res->divisor == divisor && res->fractional_bits == fractional_bits |
| && res->clock == clock, |
| "\n\nERROR: baudrate calculation failed for --" << baudrate.first << " baud--. Details below: "); |
| |
| BOOST_CHECK_EQUAL(res->actual_baudrate, calc_baudrate); |
| BOOST_CHECK_EQUAL(res->divisor, divisor); |
| BOOST_CHECK_EQUAL(res->fractional_bits, fractional_bits); |
| BOOST_CHECK_EQUAL(res->clock, clock); |
| } |
| } |
| |
| BOOST_AUTO_TEST_CASE(TypeAMFixedBaudrates) |
| { |
| ftdi->type = TYPE_AM; |
| |
| map<int, calc_result> baudrates; |
| baudrates[183] = calc_result(183, 16383, 0, 48); |
| baudrates[300] = calc_result(300, 10000, 0, 48); |
| baudrates[600] = calc_result(600, 5000, 0, 48); |
| baudrates[1200] = calc_result(1200, 2500, 0, 48); |
| baudrates[2400] = calc_result(2400, 1250, 0, 48); |
| baudrates[4800] = calc_result(4800, 625, 0, 48); |
| baudrates[9600] = calc_result(9600, 312, 1, 48); |
| baudrates[19200] = calc_result(19200, 156, 2, 48); |
| baudrates[38400] = calc_result(38400, 78, 3, 48); |
| baudrates[57600] = calc_result(57554, 52, 3, 48); |
| baudrates[115200] = calc_result(115385, 26, 0, 48); |
| baudrates[230400] = calc_result(230769, 13, 0, 48); |
| baudrates[460800] = calc_result(461538, 6, 1, 48); |
| baudrates[921600] = calc_result(923077, 3, 2, 48); |
| baudrates[1000000] = calc_result(1000000, 3, 0, 48); |
| baudrates[1090512] = calc_result(1000000, 3, 0, 48); |
| baudrates[1090909] = calc_result(1000000, 3, 0, 48); |
| baudrates[1090910] = calc_result(1000000, 3, 0, 48); |
| baudrates[1200000] = calc_result(1200000, 2, 1, 48); |
| baudrates[1333333] = calc_result(1333333, 2, 2, 48); |
| baudrates[1411764] = calc_result(1411765, 2, 3, 48); |
| baudrates[1500000] = calc_result(1500000, 2, 0, 48); |
| baudrates[2000000] = calc_result(1500000, 2, 0, 48); |
| baudrates[3000000] = calc_result(3000000, 0, 0, 48); |
| |
| test_baudrates(ftdi, baudrates); |
| } |
| |
| BOOST_AUTO_TEST_CASE(TypeBMFixedBaudrates) |
| { |
| // Unify testing of chips behaving the same |
| std::vector<enum ftdi_chip_type> test_types; |
| test_types.push_back(TYPE_BM); |
| test_types.push_back(TYPE_2232C); |
| test_types.push_back(TYPE_R); |
| |
| map<int, calc_result> baudrates; |
| baudrates[183] = calc_result(183, 16383, 7, 48); |
| baudrates[184] = calc_result(184, 16304, 4, 48); |
| baudrates[300] = calc_result(300, 10000, 0, 48); |
| baudrates[600] = calc_result(600, 5000, 0, 48); |
| baudrates[1200] = calc_result(1200, 2500, 0, 48); |
| baudrates[2400] = calc_result(2400, 1250, 0, 48); |
| baudrates[4800] = calc_result(4800, 625, 0, 48); |
| baudrates[9600] = calc_result(9600, 312, 1, 48); |
| baudrates[19200] = calc_result(19200, 156, 2, 48); |
| baudrates[38400] = calc_result(38400, 78, 3, 48); |
| baudrates[57600] = calc_result(57554, 52, 3, 48); |
| baudrates[115200] = calc_result(115385, 26, 0, 48); |
| baudrates[230400] = calc_result(230769, 13, 0, 48); |
| baudrates[460800] = calc_result(461538, 6, 1, 48); |
| baudrates[921600] = calc_result(923077, 3, 2, 48); |
| baudrates[1000000] = calc_result(1000000, 3, 0, 48); |
| baudrates[1050000] = calc_result(1043478, 2, 7, 48); |
| baudrates[1400000] = calc_result(1411765, 2, 3, 48); |
| baudrates[1500000] = calc_result(1500000, 2, 0, 48); |
| baudrates[2000000] = calc_result(2000000, 1, 0, 48); |
| baudrates[3000000] = calc_result(3000000, 0, 0, 48); |
| |
| baudrates[(3000000*16/(2*16+15))-1] = calc_result(round(3000000/3.000), 3, 0, 48); |
| baudrates[ 3000000*16/(2*16+15) ] = calc_result(round(3000000/3.000), 3, 0, 48); |
| baudrates[(3000000*16/(2*16+15))+1] = calc_result(round(3000000/2.875), 2, 7, 48); |
| baudrates[ 3000000*16/(2*16+13) ] = calc_result(round(3000000/2.875), 2, 7, 48); |
| baudrates[(3000000*16/(2*16+13))+1] = calc_result(round(3000000/2.750), 2, 6, 48); |
| baudrates[ 3000000*16/(2*16+11) ] = calc_result(round(3000000/2.750), 2, 6, 48); |
| baudrates[(3000000*16/(2*16+11))+1] = calc_result(round(3000000/2.625), 2, 5, 48); |
| baudrates[ 3000000*16/(2*16+ 9) ] = calc_result(round(3000000/2.625), 2, 5, 48); |
| baudrates[(3000000*16/(2*16+ 9))+1] = calc_result(round(3000000/2.500), 2, 1, 48); |
| baudrates[ 3000000*16/(2*16+ 7) ] = calc_result(round(3000000/2.500), 2, 1, 48); |
| baudrates[(3000000*16/(2*16+ 7))+1] = calc_result(round(3000000/2.375), 2, 4, 48); |
| baudrates[ 3000000*16/(2*16+ 5) ] = calc_result(round(3000000/2.375), 2, 4, 48); |
| baudrates[(3000000*16/(2*16+ 5))+1] = calc_result(round(3000000/2.250), 2, 2, 48); |
| baudrates[ 3000000*16/(2*16+ 3) ] = calc_result(round(3000000/2.250), 2, 2, 48); |
| baudrates[(3000000*16/(2*16+ 3))+1] = calc_result(round(3000000/2.125), 2, 3, 48); |
| baudrates[ 3000000*16/(2*16+ 1) ] = calc_result(round(3000000/2.125), 2, 3, 48); |
| baudrates[(3000000*16/(2*16+ 1))+1] = calc_result(round(3000000/2.000), 2, 0, 48); |
| |
| BOOST_FOREACH(const enum ftdi_chip_type &test_chip_type, test_types) |
| { |
| ftdi->type = test_chip_type; |
| test_baudrates(ftdi, baudrates); |
| } |
| } |
| |
| BOOST_AUTO_TEST_CASE(TypeHFixedBaudrates) |
| { |
| // Unify testing of chips behaving the same |
| std::vector<enum ftdi_chip_type> test_types; |
| test_types.push_back(TYPE_2232H); |
| test_types.push_back(TYPE_4232H); |
| test_types.push_back(TYPE_232H); |
| |
| map<int, calc_result> baudrates; |
| baudrates[183] = calc_result(183, 16383, 7, 48); |
| baudrates[184] = calc_result(184, 16304, 4, 48); |
| baudrates[300] = calc_result(300, 10000, 0, 48); |
| baudrates[600] = calc_result(600, 5000, 0, 48); |
| baudrates[1200] = calc_result(1200, 10000, 0, 120); |
| baudrates[2400] = calc_result(2400, 5000, 0, 120); |
| baudrates[4800] = calc_result(4800, 2500, 0, 120); |
| baudrates[9600] = calc_result(9600, 1250, 0, 120); |
| baudrates[19200] = calc_result(19200, 625, 0, 120); |
| baudrates[38400] = calc_result(38400, 312, 1, 120); |
| baudrates[57600] = calc_result(57588, 208, 4, 120); |
| baudrates[115200] = calc_result(115246, 104, 3, 120); |
| baudrates[230400] = calc_result(230216, 52, 3, 120); |
| baudrates[460800] = calc_result(461538, 26, 0, 120); |
| baudrates[921600] = calc_result(923077, 13, 0, 120); |
| baudrates[1000000] = calc_result(1000000, 12, 0, 120); |
| baudrates[1000000] = calc_result(1000000, 12, 0, 120); |
| baudrates[6000000] = calc_result(6000000, 2, 0, 120); |
| baudrates[4173913] = calc_result(4173913, 2, 7, 120); |
| baudrates[8000000] = calc_result(8000000, 1, 0, 120); |
| baudrates[12000000] = calc_result(12000000, 0, 0, 120); |
| |
| baudrates[(12000000*16/(2*16+15))-1] = calc_result(round(12000000/3.000), 3, 0, 120); |
| baudrates[ 12000000*16/(2*16+15) ] = calc_result(round(12000000/3.000), 3, 0, 120); |
| baudrates[(12000000*16/(2*16+15))+1] = calc_result(round(12000000/2.875), 2, 7, 120); |
| baudrates[ 12000000*16/(2*16+13) ] = calc_result(round(12000000/2.875), 2, 7, 120); |
| baudrates[(12000000*16/(2*16+13))+1] = calc_result(round(12000000/2.750), 2, 6, 120); |
| baudrates[ 12000000*16/(2*16+11) ] = calc_result(round(12000000/2.750), 2, 6, 120); |
| baudrates[(12000000*16/(2*16+11))+1] = calc_result(round(12000000/2.625), 2, 5, 120); |
| baudrates[ 12000000*16/(2*16+ 9) ] = calc_result(round(12000000/2.625), 2, 5, 120); |
| baudrates[(12000000*16/(2*16+ 9))+1] = calc_result(round(12000000/2.500), 2, 1, 120); |
| baudrates[ 12000000*16/(2*16+ 7) ] = calc_result(round(12000000/2.500), 2, 1, 120); |
| baudrates[(12000000*16/(2*16+ 7))+1] = calc_result(round(12000000/2.375), 2, 4, 120); |
| baudrates[ 12000000*16/(2*16+ 5) ] = calc_result(round(12000000/2.375), 2, 4, 120); |
| baudrates[(12000000*16/(2*16+ 5))+1] = calc_result(round(12000000/2.250), 2, 2, 120); |
| baudrates[ 12000000*16/(2*16+ 3) ] = calc_result(round(12000000/2.250), 2, 2, 120); |
| baudrates[(12000000*16/(2*16+ 3))+1] = calc_result(round(12000000/2.125), 2, 3, 120); |
| baudrates[ 12000000*16/(2*16+ 1) ] = calc_result(round(12000000/2.125), 2, 3, 120); |
| baudrates[(12000000*16/(2*16+ 1))+1] = calc_result(round(12000000/2.000), 2, 0, 120); |
| |
| BOOST_FOREACH(const enum ftdi_chip_type &test_chip_type, test_types) |
| { |
| ftdi->type = test_chip_type; |
| test_baudrates(ftdi, baudrates); |
| } |
| } |
| |
| BOOST_AUTO_TEST_SUITE_END() |
