1 // 2 // Copyright (c) 2010-2020 LabMICRO FACET UNT 3 // 4 // This file is licensed under the MIT License. 5 // Full license text is available in 'licenses/MIT.txt'. 6 // 7 using System; 8 using NUnit.Framework; 9 using Antmicro.Renode.Core; 10 using Antmicro.Renode.Peripherals.GPIOPort; 11 using Antmicro.Renode.Peripherals.Bus; 12 13 namespace Antmicro.Renode.PeripheralsTests 14 { 15 [TestFixture] 16 public class LPC43xx_GPIO_Test 17 { 18 [Test] InitTest()19 public void InitTest() 20 { 21 var machine = new Machine(); 22 var gpio = new LPC43xx_GPIO(machine); 23 machine.SystemBus.Register(gpio, new BusRangeRegistration(0x4000A000, 0x400)); 24 25 // Given a just reseted gpio port 26 gpio.Reset(); 27 28 for(var port = 0; port < 8; port ++) 29 { 30 // Then GPIO_DIR should have a value equal to cero 31 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_DIR + 4 * port), 0x00000000); 32 // And GPIO_MASK should have a value equal to cero 33 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_MASK + 4 * port), 0x00000000); 34 // And GPIO_SET should have a value equal to cero 35 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_SET + 4 * port), 0x00000000); 36 } 37 } 38 39 [Test] ChangeDirectionToOutput()40 public void ChangeDirectionToOutput() 41 { 42 var machine = new Machine(); 43 var gpio = new LPC43xx_GPIO(machine); 44 machine.SystemBus.Register(gpio, new BusRangeRegistration(0x4000A000, 0x400)); 45 46 // Given a just reseted gpio port 47 gpio.Reset(); 48 49 for(var port = 0; port < 8; port++) 50 { 51 // When GPIO_DIR it's written to set all pins as outputs 52 gpio.WriteDoubleWord(GPIO_DIR + 4 * port, 0xFFFFFFFF); 53 // Then GPIO_DIR should confirm that all pins are outpus 54 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_DIR + 4 * port), 0xFFFFFFFF); 55 // And GPIO_MASK should have retained the reset value 56 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_MASK + 4 * port), 0x00000000); 57 // And GPIO_PIN should have retained the reset value 58 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0x00000000); 59 // And GPIO_MPIN should have retained the reset value 60 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_MPIN + 4 * port), 0x00000000); 61 // And GPIO_SET should have retained the reset value 62 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_SET + 4 * port), 0x00000000); 63 } 64 } 65 66 [Test] ChangeOutputsState()67 public void ChangeOutputsState() 68 { 69 var machine = new Machine(); 70 var gpio = new LPC43xx_GPIO(machine); 71 machine.SystemBus.Register(gpio, new BusRangeRegistration(0x4000A000, 0x400)); 72 73 gpio.Reset(); 74 for(var port = 0; port < 8; port++) 75 { 76 // Given a gpio port with all pins configured as outputs 77 gpio.WriteDoubleWord(GPIO_DIR + 4 * port, 0xFFFFFFFF); 78 79 // When GPIO_PIN are writed to set all outpus pins to high state 80 gpio.WriteDoubleWord(GPIO_PIN + 4 * port, 0xFFFFFFFF); 81 // Then GPIO_PIN should have the current value of the outputs 82 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0xFFFFFFFF); 83 // And GPIO_SET should have the current value of the outputs 84 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_SET + 4 * port), 0xFFFFFFFF); 85 86 // When GPIO_PIN are writed to set all outpus pins to low state 87 gpio.WriteDoubleWord(GPIO_PIN + 4 * port, 0x00000000); 88 // Then GPIO_PIN should have the current value of the outputs 89 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0x00000000); 90 // And GPIO_SET should have the current value of the outputs 91 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_SET + 4 * port), 0x00000000); 92 93 // When GPIO_SET are writed to set all outpus pins to high state 94 gpio.WriteDoubleWord(GPIO_SET + 4 * port, 0xFFFFFFFF); 95 // Then GPIO_PIN should have the current value of the outputs 96 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0xFFFFFFFF); 97 98 // When GPIO_SET are writed to not produce changes in the outputs 99 gpio.WriteDoubleWord(GPIO_SET + 4 * port, 0x00000000); 100 // Then GPIO_PIN should have retained the previous value of the outputs 101 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0xFFFFFFFF); 102 103 // When GPIO_CLR are writed to set all outpus pins to low state 104 gpio.WriteDoubleWord(GPIO_CLR + 4 * port, 0xFFFFFFFF); 105 // Then GPIO_PIN should have the current value of the outputs 106 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0x00000000); 107 108 // When GPIO_SET are writed to not produce changes in the outputs 109 gpio.WriteDoubleWord(GPIO_CLR + 4 * port, 0x00000000); 110 // Then GPIO_PIN should have retained the previous value of the outputs 111 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0x00000000); 112 113 // When GPIO_NOT are writed to change all outpus pins 114 gpio.WriteDoubleWord(GPIO_NOT + 4 * port, 0xFFFFFFFF); 115 // Then GPIO_PIN should have the current value of the outputs 116 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0xFFFFFFFF); 117 118 // When GPIO_NOT are writed to change all outpus pins 119 gpio.WriteDoubleWord(GPIO_NOT + 4 * port, 0xFFFFFFFF); 120 // Then GPIO_PIN should have the current value of the outputs 121 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0x00000000); 122 123 // When GPIO_NOT are writed to to not produce changes in the outputs 124 gpio.WriteDoubleWord(GPIO_NOT + 4 * port, 0x00000000); 125 // Then GPIO_PIN should have retained the previous value of the outputs 126 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0x00000000); 127 } 128 } 129 130 [Test] ChangeMask()131 public void ChangeMask() 132 { 133 var machine = new Machine(); 134 var gpio = new LPC43xx_GPIO(machine); 135 machine.SystemBus.Register(gpio, new BusRangeRegistration(0x4000A000, 0x400)); 136 137 gpio.Reset(); 138 for(var port = 0; port < 8; port++) 139 { 140 // When GPIO_MASK it's written to set filter out all pins 141 gpio.WriteDoubleWord(GPIO_MASK + 4 * port, 0xFFFFFFFF); 142 // Then GPIO_MASK should confirm that all pins are filtered out 143 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_MASK + 4 * port), 0xFFFFFFFF); 144 } 145 } 146 147 [Test] ChangeMaskedOuputState()148 public void ChangeMaskedOuputState() 149 { 150 var machine = new Machine(); 151 var gpio = new LPC43xx_GPIO(machine); 152 machine.SystemBus.Register(gpio, new BusRangeRegistration(0x4000A000, 0x400)); 153 154 gpio.Reset(); 155 for(var port = 0; port < 8; port++) 156 { 157 // Given a gpio port with all pins configured as outputs 158 gpio.WriteDoubleWord(GPIO_DIR + 4 * port, 0xFFFFFFFF); 159 // And a gpio port with all pins setted to high state 160 gpio.WriteDoubleWord(GPIO_PIN + 4 * port, 0xFFFFFFFF); 161 162 // When GPIO_MASK it's written to set filter out lower half pins 163 gpio.WriteDoubleWord(GPIO_MASK + 4 * port, 0x0000FFFF); 164 // Then GPIO_MPORT should return filtered pins in low and not filtered pins in high 165 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_MPIN + 4 * port), 0xFFFF0000); 166 167 // When GPIO_MPORT it's written to set filter pins to low 168 gpio.WriteDoubleWord(GPIO_MPIN + 4 * port, 0x00000000); 169 // Then GPIO_PORT should return not filtered pins in low and filtered pins in high 170 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_PIN + 4 * port), 0x0000FFFF); 171 172 // When GPIO_MASK it's written to set filter out upper half pins 173 gpio.WriteDoubleWord(GPIO_MASK + 4 * port, 0xFFFF0000); 174 // Then GPIO_MPORT should return filtered pins in low and not filtered pins in high 175 Assert.AreEqual(gpio.ReadDoubleWord(GPIO_MPIN + 4 * port), 0x0000FFFF); 176 } 177 } 178 179 private const uint GPIO_DIR = 0x2000; 180 private const uint GPIO_MASK = 0x2080; 181 private const uint GPIO_PIN = 0x2100; 182 private const uint GPIO_MPIN = 0x2180; 183 private const uint GPIO_SET = 0x2200; 184 private const uint GPIO_CLR = 0x2280; 185 private const uint GPIO_NOT = 0x2300; 186 187 } 188 } 189 190
