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