Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 1 | // Copyright 2021 The Pigweed Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 4 | // use this file except in compliance with the License. You may obtain a copy of |
| 5 | // the License at |
| 6 | // |
| 7 | // https://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 11 | // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 12 | // License for the specific language governing permissions and limitations under |
| 13 | // the License. |
| 14 | #include "pw_i2c/register_device.h" |
| 15 | |
| 16 | #include "gtest/gtest.h" |
Wyatt Hepler | f298de4 | 2021-03-19 15:06:36 -0700 | [diff] [blame] | 17 | #include "pw_assert/check.h" |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 18 | #include "pw_bytes/byte_builder.h" |
| 19 | |
| 20 | namespace pw { |
| 21 | namespace i2c { |
| 22 | namespace { |
| 23 | |
| 24 | using ::pw::Status; |
| 25 | using namespace std::literals::chrono_literals; |
| 26 | |
| 27 | constexpr uint8_t kErrorValue = 0x11; |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 28 | constexpr Address kTestDeviceAddress = Address::SevenBit<0x3F>(); |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 29 | |
| 30 | constexpr chrono::SystemClock::duration kTimeout = |
| 31 | std::chrono::duration_cast<chrono::SystemClock::duration>(100ms); |
| 32 | |
| 33 | // Default test object. Mimics closely to I2c devices. |
| 34 | class TestInitiator : public Initiator { |
| 35 | public: |
| 36 | explicit TestInitiator() {} |
| 37 | |
| 38 | ByteBuilder& GetWriteBuffer() { return write_buffer_; } |
| 39 | |
| 40 | void SetReadData(ByteSpan read_data) { |
| 41 | read_buffer_.append(read_data.data(), read_data.size()); |
| 42 | } |
| 43 | |
| 44 | private: |
| 45 | Status DoWriteReadFor(Address, |
| 46 | ConstByteSpan tx_data, |
| 47 | ByteSpan rx_data, |
| 48 | chrono::SystemClock::duration) override { |
| 49 | // Write |
| 50 | if (tx_data.size() > 0) { |
| 51 | write_buffer_.append(tx_data.data(), tx_data.size()); |
| 52 | } |
| 53 | |
| 54 | // Read |
| 55 | if (rx_data.size() > 0) { |
| 56 | PW_CHECK_UINT_EQ( |
| 57 | read_buffer_.size(), rx_data.size(), "Buffer to read is too big"); |
| 58 | for (uint32_t i = 0; i < rx_data.size(); i++) { |
| 59 | rx_data[i] = read_buffer_.data()[i]; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | return OkStatus(); |
| 64 | } |
| 65 | |
| 66 | ByteBuffer<10> write_buffer_; |
| 67 | ByteBuffer<10> read_buffer_; |
| 68 | }; |
| 69 | |
| 70 | TEST(RegisterDevice, Construction) { |
| 71 | TestInitiator initiator; |
| 72 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 73 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 74 | std::endian::little, |
| 75 | RegisterAddressSize::k1Byte); |
| 76 | } |
| 77 | |
| 78 | TEST(RegisterDevice, WriteRegisters8With2RegistersAnd1ByteAddress) { |
| 79 | TestInitiator initiator; |
| 80 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 81 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 82 | std::endian::little, |
| 83 | RegisterAddressSize::k1Byte); |
| 84 | |
| 85 | std::array<std::byte, 2> register_data = {std::byte{0xCD}, std::byte{0xEF}}; |
| 86 | std::array<std::byte, 3> builder; |
| 87 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 88 | EXPECT_EQ( |
| 89 | device.WriteRegisters(kRegisterAddress, register_data, builder, kTimeout), |
| 90 | pw::OkStatus()); |
| 91 | |
| 92 | ByteBuilder& test_device_builder = initiator.GetWriteBuffer(); |
| 93 | EXPECT_EQ(sizeof(builder), test_device_builder.size()); |
| 94 | |
| 95 | // Check address. |
| 96 | EXPECT_EQ(kRegisterAddress, |
| 97 | static_cast<uint32_t>(test_device_builder.data()[0])); |
| 98 | |
| 99 | // Check data. |
| 100 | constexpr uint32_t kAddressSize = |
| 101 | static_cast<uint32_t>(RegisterAddressSize::k1Byte); |
| 102 | for (uint32_t i = 0; i < test_device_builder.size() - kAddressSize; i++) { |
| 103 | EXPECT_EQ(register_data[i], test_device_builder.data()[i + kAddressSize]); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | TEST(RegisterDevice, WriteRegisters8With2RegistersAnd2ByteAddress) { |
| 108 | TestInitiator initiator; |
| 109 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 110 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 111 | std::endian::little, |
| 112 | RegisterAddressSize::k2Bytes); |
| 113 | |
| 114 | constexpr uint32_t kRegisterAddress = 0x89AB; |
| 115 | std::byte register_data[2] = {std::byte{0xCD}, std::byte{0xEF}}; |
| 116 | std::array<std::byte, 4> builder; |
| 117 | EXPECT_EQ( |
| 118 | device.WriteRegisters(kRegisterAddress, register_data, builder, kTimeout), |
| 119 | pw::OkStatus()); |
| 120 | |
| 121 | ByteBuilder& test_device_builder = initiator.GetWriteBuffer(); |
| 122 | EXPECT_EQ(sizeof(builder), test_device_builder.size()); |
| 123 | |
| 124 | // Check address. |
| 125 | const uint16_t kActualAddress = *(reinterpret_cast<uint16_t*>( |
| 126 | const_cast<std::byte*>(test_device_builder.data()))); |
| 127 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 128 | |
| 129 | // Check data. |
| 130 | constexpr uint32_t kAddressSize = |
| 131 | static_cast<uint32_t>(RegisterAddressSize::k2Bytes); |
| 132 | for (uint32_t i = 0; i < test_device_builder.size() - kAddressSize; i++) { |
| 133 | EXPECT_EQ(register_data[i], test_device_builder.data()[i + kAddressSize]); |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | TEST(RegisterDevice, WriteRegisters16With2RegistersAnd2ByteAddress) { |
| 138 | TestInitiator initiator; |
| 139 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 140 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 141 | std::endian::little, |
| 142 | RegisterAddressSize::k2Bytes); |
| 143 | |
| 144 | constexpr uint32_t kRegisterAddress = 0x89AB; |
| 145 | std::array<uint16_t, 2> register_data = {0xCDEF, 0x1234}; |
| 146 | std::array<std::byte, 6> builder; |
| 147 | EXPECT_EQ(device.WriteRegisters16( |
| 148 | kRegisterAddress, register_data, builder, kTimeout), |
| 149 | pw::OkStatus()); |
| 150 | |
| 151 | ByteBuilder& test_device_builder = initiator.GetWriteBuffer(); |
| 152 | EXPECT_EQ(sizeof(builder), test_device_builder.size()); |
| 153 | |
| 154 | // Check address. |
| 155 | const uint16_t kActualAddress = *(reinterpret_cast<uint16_t*>( |
| 156 | const_cast<std::byte*>(test_device_builder.data()))); |
| 157 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 158 | |
| 159 | // Check data. |
| 160 | constexpr uint32_t kAddressSize = |
| 161 | static_cast<uint32_t>(RegisterAddressSize::k2Bytes); |
| 162 | |
| 163 | const uint16_t* read_pointer = reinterpret_cast<const uint16_t*>( |
| 164 | test_device_builder.data() + kAddressSize); |
| 165 | for (uint32_t i = 0; i < (test_device_builder.size() - kAddressSize) / |
| 166 | sizeof(register_data[0]); |
| 167 | i++) { |
| 168 | EXPECT_EQ(register_data[i], read_pointer[i]); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | TEST(RegisterDevice, WriteRegisters16With2RegistersAnd2ByteAddressBigEndian) { |
| 173 | TestInitiator initiator; |
| 174 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 175 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 176 | std::endian::big, |
| 177 | RegisterAddressSize::k2Bytes); |
| 178 | |
| 179 | constexpr uint32_t kRegisterAddress = 0x89AB; |
| 180 | std::array<uint16_t, 2> register_data = {0xCDEF, 0x1234}; |
| 181 | std::array<std::byte, 6> builder; |
| 182 | EXPECT_EQ(device.WriteRegisters16( |
| 183 | kRegisterAddress, register_data, builder, kTimeout), |
| 184 | pw::OkStatus()); |
| 185 | |
| 186 | ByteBuilder& test_device_builder = initiator.GetWriteBuffer(); |
| 187 | EXPECT_EQ(sizeof(builder), test_device_builder.size()); |
| 188 | |
| 189 | // Check address. |
| 190 | const uint16_t kActualAddress = *(reinterpret_cast<uint16_t*>( |
| 191 | const_cast<std::byte*>(test_device_builder.data()))); |
| 192 | EXPECT_EQ(bytes::ReadInOrder<uint16_t>(std::endian::big, &kRegisterAddress), |
| 193 | kActualAddress); |
| 194 | |
| 195 | // Check data. |
| 196 | constexpr uint32_t kAddressSize = |
| 197 | static_cast<uint32_t>(RegisterAddressSize::k2Bytes); |
| 198 | |
| 199 | const uint16_t* read_pointer = reinterpret_cast<const uint16_t*>( |
| 200 | test_device_builder.data() + kAddressSize); |
| 201 | for (uint32_t i = 0; i < (test_device_builder.size() - kAddressSize) / |
| 202 | sizeof(register_data[0]); |
| 203 | i++) { |
| 204 | EXPECT_EQ(bytes::ReadInOrder<uint16_t>(std::endian::big, ®ister_data[i]), |
| 205 | read_pointer[i]); |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | TEST(RegisterDevice, WriteRegisters8BufferTooSmall) { |
| 210 | TestInitiator initiator; |
| 211 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 212 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 213 | std::endian::little, |
| 214 | RegisterAddressSize::k2Bytes); |
| 215 | |
| 216 | constexpr uint32_t kRegisterAddress = 0x89AB; |
| 217 | std::array<std::byte, 2> register_data = {std::byte{0xCD}, std::byte{0xEF}}; |
| 218 | std::array<std::byte, 2> builder; |
| 219 | EXPECT_EQ( |
| 220 | device.WriteRegisters(kRegisterAddress, register_data, builder, kTimeout), |
| 221 | pw::Status::OutOfRange()); |
| 222 | } |
| 223 | |
| 224 | TEST(RegisterDevice, WriteRegister16With1ByteAddress) { |
| 225 | TestInitiator initiator; |
| 226 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 227 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 228 | std::endian::little, |
| 229 | RegisterAddressSize::k1Byte); |
| 230 | |
| 231 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 232 | constexpr uint16_t kRegisterData = 0xBCDE; |
| 233 | EXPECT_EQ(device.WriteRegister16(kRegisterAddress, kRegisterData, kTimeout), |
| 234 | pw::OkStatus()); |
| 235 | |
| 236 | constexpr uint32_t kAddressSize = |
| 237 | static_cast<uint32_t>(RegisterAddressSize::k1Byte); |
| 238 | ByteBuilder& test_device_builder = initiator.GetWriteBuffer(); |
| 239 | EXPECT_EQ(test_device_builder.size(), kAddressSize + sizeof(kRegisterData)); |
| 240 | |
| 241 | // Check address. |
| 242 | EXPECT_EQ(kRegisterAddress, |
| 243 | static_cast<uint32_t>(test_device_builder.data()[0])); |
| 244 | |
| 245 | // Check data. |
| 246 | for (uint32_t i = 0; i < test_device_builder.size() - kAddressSize; i++) { |
| 247 | EXPECT_EQ( |
| 248 | (kRegisterData >> (8 * i)) & 0xFF, |
| 249 | static_cast<uint16_t>(test_device_builder.data()[i + kAddressSize])); |
| 250 | } |
| 251 | } |
| 252 | |
| 253 | TEST(RegisterDevice, WriteRegister32With1ByteAddress) { |
| 254 | TestInitiator initiator; |
| 255 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 256 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 257 | std::endian::little, |
| 258 | RegisterAddressSize::k1Byte); |
| 259 | |
| 260 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 261 | constexpr uint32_t kRegisterData = 0xBCCDDEEF; |
| 262 | EXPECT_EQ(device.WriteRegister32(kRegisterAddress, kRegisterData, kTimeout), |
| 263 | pw::OkStatus()); |
| 264 | |
| 265 | constexpr uint32_t kAddressSize = |
| 266 | static_cast<uint32_t>(RegisterAddressSize::k1Byte); |
| 267 | ByteBuilder& test_device_builder = initiator.GetWriteBuffer(); |
| 268 | EXPECT_EQ(test_device_builder.size(), kAddressSize + sizeof(kRegisterData)); |
| 269 | |
| 270 | // Check address. |
| 271 | EXPECT_EQ(kRegisterAddress, |
| 272 | static_cast<uint32_t>(test_device_builder.data()[0])); |
| 273 | |
| 274 | // Check data. |
| 275 | for (uint32_t i = 0; i < test_device_builder.size() - kAddressSize; i++) { |
| 276 | EXPECT_EQ( |
| 277 | (kRegisterData >> (8 * i)) & 0xFF, |
| 278 | static_cast<uint32_t>(test_device_builder.data()[i + kAddressSize])); |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | TEST(RegisterDevice, WriteRegister16with2ByteAddress) { |
| 283 | TestInitiator initiator; |
| 284 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 285 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 286 | std::endian::little, |
| 287 | RegisterAddressSize::k2Bytes); |
| 288 | |
| 289 | constexpr uint32_t kRegisterAddress = 0xAB23; |
| 290 | constexpr uint16_t kRegisterData = 0xBCDD; |
| 291 | EXPECT_EQ(device.WriteRegister16(kRegisterAddress, kRegisterData, kTimeout), |
| 292 | pw::OkStatus()); |
| 293 | |
| 294 | constexpr uint32_t kAddressSize = |
| 295 | static_cast<uint32_t>(RegisterAddressSize::k2Bytes); |
| 296 | ByteBuilder& test_device_builder = initiator.GetWriteBuffer(); |
| 297 | EXPECT_EQ(test_device_builder.size(), kAddressSize + sizeof(kRegisterData)); |
| 298 | |
| 299 | // Check address. |
| 300 | const uint16_t kActualAddress = *(reinterpret_cast<uint16_t*>( |
| 301 | const_cast<std::byte*>(test_device_builder.data()))); |
| 302 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 303 | |
| 304 | // Check data. |
| 305 | for (uint32_t i = 0; i < test_device_builder.size() - kAddressSize; i++) { |
| 306 | EXPECT_EQ( |
| 307 | (kRegisterData >> (8 * i)) & 0xFF, |
| 308 | static_cast<uint16_t>(test_device_builder.data()[i + kAddressSize])); |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | TEST(RegisterDevice, WriteRegister16With1ByteAddressAndBigEndian) { |
| 313 | TestInitiator initiator; |
| 314 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 315 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 316 | std::endian::big, |
| 317 | RegisterAddressSize::k1Byte); |
| 318 | |
| 319 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 320 | constexpr uint16_t kRegisterData = 0xBCDE; |
| 321 | EXPECT_EQ(device.WriteRegister16(kRegisterAddress, kRegisterData, kTimeout), |
| 322 | pw::OkStatus()); |
| 323 | |
| 324 | constexpr uint32_t kAddressSize = |
| 325 | static_cast<uint32_t>(RegisterAddressSize::k1Byte); |
| 326 | ByteBuilder& test_device_builder = initiator.GetWriteBuffer(); |
| 327 | EXPECT_EQ(test_device_builder.size(), kAddressSize + sizeof(kRegisterData)); |
| 328 | |
| 329 | // Check address. |
| 330 | EXPECT_EQ(kRegisterAddress, |
| 331 | static_cast<uint32_t>(test_device_builder.data()[0])); |
| 332 | |
| 333 | // Check data. |
| 334 | for (uint32_t i = 0; i < test_device_builder.size() - kAddressSize; i++) { |
| 335 | const uint32_t shift = test_device_builder.size() - kAddressSize - (i + 1); |
| 336 | EXPECT_EQ( |
| 337 | (kRegisterData >> (8 * shift)) & 0xFF, |
| 338 | static_cast<uint16_t>(test_device_builder.data()[i + kAddressSize])); |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | TEST(RegisterDevice, WriteRegister32With1ByteAddressAndBigEndian) { |
| 343 | TestInitiator initiator; |
| 344 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 345 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 346 | std::endian::big, |
| 347 | RegisterAddressSize::k1Byte); |
| 348 | |
| 349 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 350 | constexpr uint32_t kRegisterData = 0xBCCDDEEF; |
| 351 | EXPECT_EQ(device.WriteRegister32(kRegisterAddress, kRegisterData, kTimeout), |
| 352 | pw::OkStatus()); |
| 353 | |
| 354 | constexpr uint32_t kAddressSize = |
| 355 | static_cast<uint32_t>(RegisterAddressSize::k1Byte); |
| 356 | ByteBuilder& test_device_builder = initiator.GetWriteBuffer(); |
| 357 | EXPECT_EQ(test_device_builder.size(), kAddressSize + sizeof(kRegisterData)); |
| 358 | |
| 359 | // Check address. |
| 360 | EXPECT_EQ(kRegisterAddress, |
| 361 | static_cast<uint32_t>(test_device_builder.data()[0])); |
| 362 | |
| 363 | // Check data. |
| 364 | for (uint32_t i = 0; i < test_device_builder.size() - kAddressSize; i++) { |
| 365 | const uint32_t shift = test_device_builder.size() - kAddressSize - (i + 1); |
| 366 | EXPECT_EQ( |
| 367 | (kRegisterData >> (8 * shift)) & 0xFF, |
| 368 | static_cast<uint32_t>(test_device_builder.data()[i + kAddressSize])); |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | TEST(RegisterDevice, WriteRegister16With2ByteAddressAndBigEndian) { |
| 373 | TestInitiator initiator; |
| 374 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 375 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 376 | std::endian::big, |
| 377 | RegisterAddressSize::k2Bytes); |
| 378 | |
| 379 | constexpr uint32_t kRegisterAddress = 0xAB11; |
| 380 | constexpr uint16_t kRegisterData = 0xBCDF; |
| 381 | EXPECT_EQ(device.WriteRegister16(kRegisterAddress, kRegisterData, kTimeout), |
| 382 | pw::OkStatus()); |
| 383 | |
| 384 | constexpr uint32_t kAddressSize = |
| 385 | static_cast<uint32_t>(RegisterAddressSize::k2Bytes); |
| 386 | ByteBuilder& test_device_builder = initiator.GetWriteBuffer(); |
| 387 | EXPECT_EQ(test_device_builder.size(), kAddressSize + sizeof(kRegisterData)); |
| 388 | |
| 389 | // Check address. |
| 390 | const uint16_t kActualAddress = *(reinterpret_cast<uint16_t*>( |
| 391 | const_cast<std::byte*>(test_device_builder.data()))); |
| 392 | EXPECT_EQ(bytes::ReadInOrder<uint16_t>(std::endian::big, &kRegisterAddress), |
| 393 | kActualAddress); |
| 394 | |
| 395 | // Check data. |
| 396 | for (uint32_t i = 0; i < test_device_builder.size() - kAddressSize; i++) { |
| 397 | const uint32_t shift = test_device_builder.size() - kAddressSize - (i + 1); |
| 398 | EXPECT_EQ( |
| 399 | (kRegisterData >> (8 * shift)) & 0xFF, |
| 400 | static_cast<uint16_t>(test_device_builder.data()[i + kAddressSize])); |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | TEST(RegisterDevice, ReadRegisters8ByteWith2RegistersAnd1ByteAddress) { |
| 405 | TestInitiator initiator; |
| 406 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 407 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 408 | std::endian::little, |
| 409 | RegisterAddressSize::k1Byte); |
| 410 | |
| 411 | std::array<std::byte, 2> register_data = {std::byte{0xCD}, std::byte{0xEF}}; |
| 412 | initiator.SetReadData(register_data); |
| 413 | |
| 414 | std::array<std::byte, 2> buffer; |
| 415 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 416 | EXPECT_EQ(device.ReadRegisters(kRegisterAddress, buffer, kTimeout), |
| 417 | pw::OkStatus()); |
| 418 | |
| 419 | // Check address. |
| 420 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 421 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k1Byte), |
| 422 | address_buffer.size()); |
| 423 | |
| 424 | const uint8_t kActualAddress = *(reinterpret_cast<uint8_t*>( |
| 425 | const_cast<std::byte*>(address_buffer.data()))); |
| 426 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 427 | |
| 428 | // Check data. |
| 429 | for (uint32_t i = 0; i < sizeof(buffer); i++) { |
| 430 | EXPECT_EQ(buffer[i], register_data[i]); |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | TEST(RegisterDevice, ReadRegisters8IntWith2RegistersAnd1ByteAddress) { |
| 435 | TestInitiator initiator; |
| 436 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 437 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 438 | std::endian::little, |
| 439 | RegisterAddressSize::k1Byte); |
| 440 | |
| 441 | std::array<uint8_t, 2> register_data = {0xCD, 0xEF}; |
| 442 | initiator.SetReadData(std::as_writable_bytes( |
| 443 | std::span(register_data.data(), register_data.size()))); |
| 444 | |
| 445 | std::array<uint8_t, 2> buffer; |
| 446 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 447 | EXPECT_EQ(device.ReadRegisters8(kRegisterAddress, buffer, kTimeout), |
| 448 | pw::OkStatus()); |
| 449 | |
| 450 | // Check address. |
| 451 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 452 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k1Byte), |
| 453 | address_buffer.size()); |
| 454 | |
| 455 | const uint8_t kActualAddress = *(reinterpret_cast<uint8_t*>( |
| 456 | const_cast<std::byte*>(address_buffer.data()))); |
| 457 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 458 | |
| 459 | // Check data. |
| 460 | for (uint32_t i = 0; i < sizeof(buffer); i++) { |
| 461 | EXPECT_EQ(buffer[i], register_data[i]); |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | TEST(RegisterDevice, ReadRegisters8ByteWith2RegistersAnd2ByteAddress) { |
| 466 | TestInitiator initiator; |
| 467 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 468 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 469 | std::endian::little, |
| 470 | RegisterAddressSize::k2Bytes); |
| 471 | |
| 472 | std::array<std::byte, 2> register_data = {std::byte{0xCD}, std::byte{0xEF}}; |
| 473 | initiator.SetReadData(register_data); |
| 474 | |
| 475 | std::array<std::byte, 2> buffer; |
| 476 | constexpr uint32_t kRegisterAddress = 0xABBA; |
| 477 | EXPECT_EQ(device.ReadRegisters(kRegisterAddress, buffer, kTimeout), |
| 478 | pw::OkStatus()); |
| 479 | |
| 480 | // Check address. |
| 481 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 482 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k2Bytes), |
| 483 | address_buffer.size()); |
| 484 | |
| 485 | const uint16_t kActualAddress = *(reinterpret_cast<uint16_t*>( |
| 486 | const_cast<std::byte*>(address_buffer.data()))); |
| 487 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 488 | |
| 489 | // Check data. |
| 490 | for (uint32_t i = 0; i < sizeof(buffer); i++) { |
| 491 | EXPECT_EQ(buffer[i], register_data[i]); |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | TEST(RegisterDevice, ReadRegisters16With2RegistersAnd2ByteAddress) { |
| 496 | TestInitiator initiator; |
| 497 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 498 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 499 | std::endian::little, |
| 500 | RegisterAddressSize::k2Bytes); |
| 501 | |
| 502 | std::array<uint16_t, 2> register_data = {0xCDEF, 0x1234}; |
| 503 | initiator.SetReadData(std::as_writable_bytes( |
| 504 | std::span(register_data.data(), register_data.size()))); |
| 505 | |
| 506 | std::array<uint16_t, 2> buffer; |
| 507 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 508 | EXPECT_EQ(device.ReadRegisters16(kRegisterAddress, buffer, kTimeout), |
| 509 | pw::OkStatus()); |
| 510 | |
| 511 | // Check address. |
| 512 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 513 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k2Bytes), |
| 514 | address_buffer.size()); |
| 515 | |
| 516 | const uint16_t kActualAddress = *(reinterpret_cast<uint16_t*>( |
| 517 | const_cast<std::byte*>(address_buffer.data()))); |
| 518 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 519 | |
| 520 | // Check data. |
| 521 | for (uint32_t i = 0; i < buffer.size(); i++) { |
| 522 | EXPECT_EQ(buffer[i], register_data[i]); |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | TEST(RegisterDevice, ReadRegisters16With2RegistersAnd2ByteAddressBigEndian) { |
| 527 | TestInitiator initiator; |
| 528 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 529 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 530 | std::endian::big, |
| 531 | RegisterAddressSize::k2Bytes); |
| 532 | |
| 533 | std::array<uint16_t, 2> register_data = {0xCDEF, 0x1234}; |
| 534 | initiator.SetReadData(std::as_writable_bytes( |
| 535 | std::span(register_data.data(), register_data.size()))); |
| 536 | |
| 537 | std::array<uint16_t, 2> buffer; |
| 538 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 539 | EXPECT_EQ(device.ReadRegisters16(kRegisterAddress, buffer, kTimeout), |
| 540 | pw::OkStatus()); |
| 541 | |
| 542 | // Check address. |
| 543 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 544 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k2Bytes), |
| 545 | address_buffer.size()); |
| 546 | |
| 547 | const uint16_t kActualAddress = *(reinterpret_cast<uint16_t*>( |
| 548 | const_cast<std::byte*>(address_buffer.data()))); |
| 549 | EXPECT_EQ(bytes::ReadInOrder<uint16_t>(std::endian::big, &kRegisterAddress), |
| 550 | kActualAddress); |
| 551 | |
| 552 | // Check data. |
| 553 | for (uint32_t i = 0; i < buffer.size(); i++) { |
| 554 | EXPECT_EQ(bytes::ReadInOrder<uint16_t>(std::endian::big, ®ister_data[i]), |
| 555 | buffer[i]); |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | TEST(RegisterDevice, ReadRegister16With1ByteAddress) { |
| 560 | TestInitiator initiator; |
| 561 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 562 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 563 | std::endian::little, |
| 564 | RegisterAddressSize::k1Byte); |
| 565 | |
| 566 | std::array<std::byte, 2> register_data = {std::byte{0xCD}, std::byte{0xEF}}; |
| 567 | initiator.SetReadData(register_data); |
| 568 | |
| 569 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 570 | Result<uint16_t> result = device.ReadRegister16(kRegisterAddress, kTimeout); |
| 571 | EXPECT_TRUE(result.ok()); |
| 572 | uint16_t read_data = result.value_or(kErrorValue); |
| 573 | |
| 574 | // Check address. |
| 575 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 576 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k1Byte), |
| 577 | address_buffer.size()); |
| 578 | |
| 579 | const uint8_t kActualAddress = *(reinterpret_cast<uint8_t*>( |
| 580 | const_cast<std::byte*>(address_buffer.data()))); |
| 581 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 582 | |
| 583 | // Check data. |
| 584 | uint8_t* read_pointer = reinterpret_cast<uint8_t*>(&read_data); |
| 585 | for (uint32_t i = 0; i < sizeof(read_data); i++) { |
| 586 | EXPECT_EQ(read_pointer[i], static_cast<uint8_t>(register_data[i])); |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | TEST(RegisterDevice, ReadRegister32With1ByteAddress) { |
| 591 | TestInitiator initiator; |
| 592 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 593 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 594 | std::endian::little, |
| 595 | RegisterAddressSize::k1Byte); |
| 596 | |
| 597 | std::array<std::byte, 4> register_data = { |
| 598 | std::byte{0x98}, std::byte{0x76}, std::byte{0x54}, std::byte{0x32}}; |
| 599 | initiator.SetReadData(register_data); |
| 600 | |
| 601 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 602 | Result<uint32_t> result = device.ReadRegister32(kRegisterAddress, kTimeout); |
| 603 | EXPECT_TRUE(result.ok()); |
| 604 | uint32_t read_data = result.value_or(kErrorValue); |
| 605 | |
| 606 | // Check address. |
| 607 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 608 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k1Byte), |
| 609 | address_buffer.size()); |
| 610 | |
| 611 | const uint8_t kActualAddress = *(reinterpret_cast<uint8_t*>( |
| 612 | const_cast<std::byte*>(address_buffer.data()))); |
| 613 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 614 | |
| 615 | // Check data. |
| 616 | uint8_t* read_pointer = reinterpret_cast<uint8_t*>(&read_data); |
| 617 | for (uint32_t i = 0; i < sizeof(read_data); i++) { |
| 618 | EXPECT_EQ(read_pointer[i], static_cast<uint8_t>(register_data[i])); |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | TEST(RegisterDevice, ReadRegister16With2ByteAddress) { |
| 623 | TestInitiator initiator; |
| 624 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 625 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 626 | std::endian::little, |
| 627 | RegisterAddressSize::k2Bytes); |
| 628 | |
| 629 | std::array<std::byte, 2> register_data = {std::byte{0x98}, std::byte{0x76}}; |
| 630 | initiator.SetReadData(register_data); |
| 631 | |
| 632 | constexpr uint32_t kRegisterAddress = 0xA4AB; |
| 633 | Result<uint16_t> result = device.ReadRegister16(kRegisterAddress, kTimeout); |
| 634 | EXPECT_TRUE(result.ok()); |
| 635 | uint16_t read_data = result.value_or(kErrorValue); |
| 636 | |
| 637 | // Check address. |
| 638 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 639 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k2Bytes), |
| 640 | address_buffer.size()); |
| 641 | |
| 642 | const uint16_t kActualAddress = *(reinterpret_cast<uint16_t*>( |
| 643 | const_cast<std::byte*>(address_buffer.data()))); |
| 644 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 645 | |
| 646 | // Check data. |
| 647 | uint8_t* read_pointer = reinterpret_cast<uint8_t*>(&read_data); |
| 648 | for (uint32_t i = 0; i < sizeof(read_data); i++) { |
| 649 | EXPECT_EQ(read_pointer[i], static_cast<uint8_t>(register_data[i])); |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | TEST(RegisterDevice, ReadRegister16With1ByteAddressAndBigEndian) { |
| 654 | TestInitiator initiator; |
| 655 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 656 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 657 | std::endian::big, |
| 658 | RegisterAddressSize::k1Byte); |
| 659 | |
| 660 | std::array<std::byte, 2> register_data = {std::byte{0x98}, std::byte{0x76}}; |
| 661 | initiator.SetReadData(register_data); |
| 662 | |
| 663 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 664 | Result<uint16_t> result = device.ReadRegister16(kRegisterAddress, kTimeout); |
| 665 | EXPECT_TRUE(result.ok()); |
| 666 | uint16_t read_data = result.value_or(kErrorValue); |
| 667 | |
| 668 | // Check address. |
| 669 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 670 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k1Byte), |
| 671 | address_buffer.size()); |
| 672 | |
| 673 | const uint8_t kActualAddress = *(reinterpret_cast<uint8_t*>( |
| 674 | const_cast<std::byte*>(address_buffer.data()))); |
| 675 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 676 | |
| 677 | // Check data. |
| 678 | uint8_t* read_pointer = reinterpret_cast<uint8_t*>(&read_data); |
| 679 | for (uint32_t i = 0; i < sizeof(read_data); i++) { |
| 680 | const uint32_t kReadPointerIndex = sizeof(read_data) - 1 - i; |
| 681 | EXPECT_EQ(read_pointer[kReadPointerIndex], |
| 682 | static_cast<uint8_t>(register_data[i])); |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | TEST(RegisterDevice, ReadRegister32With1ByteAddressAndBigEndian) { |
| 687 | TestInitiator initiator; |
| 688 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 689 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 690 | std::endian::big, |
| 691 | RegisterAddressSize::k1Byte); |
| 692 | |
| 693 | std::array<std::byte, 4> register_data = { |
| 694 | std::byte{0x98}, std::byte{0x76}, std::byte{0x54}, std::byte{0x32}}; |
| 695 | initiator.SetReadData(register_data); |
| 696 | |
| 697 | constexpr uint32_t kRegisterAddress = 0xAB; |
| 698 | Result<uint32_t> result = device.ReadRegister32(kRegisterAddress, kTimeout); |
| 699 | EXPECT_TRUE(result.ok()); |
| 700 | uint32_t read_data = result.value_or(kErrorValue); |
| 701 | |
| 702 | // Check address. |
| 703 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 704 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k1Byte), |
| 705 | address_buffer.size()); |
| 706 | |
| 707 | const uint8_t kActualAddress = *(reinterpret_cast<uint8_t*>( |
| 708 | const_cast<std::byte*>(address_buffer.data()))); |
| 709 | EXPECT_EQ(kRegisterAddress, kActualAddress); |
| 710 | |
| 711 | // Check data. |
| 712 | uint8_t* read_pointer = reinterpret_cast<uint8_t*>(&read_data); |
| 713 | for (uint32_t i = 0; i < sizeof(read_data); i++) { |
| 714 | const uint32_t kReadPointerIndex = sizeof(read_data) - 1 - i; |
| 715 | EXPECT_EQ(read_pointer[kReadPointerIndex], |
| 716 | static_cast<uint8_t>(register_data[i])); |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | TEST(RegisterDevice, ReadRegister16With2ByteAddressAndBigEndian) { |
| 721 | TestInitiator initiator; |
| 722 | RegisterDevice device(initiator, |
Rob Mohr | ecbdb69 | 2021-06-10 15:03:10 -0700 | [diff] [blame] | 723 | kTestDeviceAddress, |
Kevin Zeng | 58b43d3 | 2021-04-16 00:36:16 -0700 | [diff] [blame] | 724 | std::endian::big, |
| 725 | RegisterAddressSize::k2Bytes); |
| 726 | |
| 727 | std::array<std::byte, 2> register_data = {std::byte{0x98}, std::byte{0x76}}; |
| 728 | initiator.SetReadData(register_data); |
| 729 | |
| 730 | constexpr uint32_t kRegisterAddress = 0xABEF; |
| 731 | Result<uint16_t> result = device.ReadRegister16(kRegisterAddress, kTimeout); |
| 732 | EXPECT_TRUE(result.ok()); |
| 733 | uint16_t read_data = result.value_or(kErrorValue); |
| 734 | |
| 735 | // Check address. |
| 736 | ByteBuilder& address_buffer = initiator.GetWriteBuffer(); |
| 737 | EXPECT_EQ(static_cast<uint32_t>(RegisterAddressSize::k2Bytes), |
| 738 | address_buffer.size()); |
| 739 | |
| 740 | const uint16_t kActualAddress = *(reinterpret_cast<uint16_t*>( |
| 741 | const_cast<std::byte*>(address_buffer.data()))); |
| 742 | EXPECT_EQ(bytes::ReadInOrder<uint16_t>(std::endian::big, &kRegisterAddress), |
| 743 | kActualAddress); |
| 744 | |
| 745 | // Check data. |
| 746 | uint8_t* read_pointer = reinterpret_cast<uint8_t*>(&read_data); |
| 747 | for (uint32_t i = 0; i < sizeof(read_data); i++) { |
| 748 | const uint32_t kReadPointerIndex = sizeof(read_data) - 1 - i; |
| 749 | EXPECT_EQ(read_pointer[kReadPointerIndex], |
| 750 | static_cast<uint8_t>(register_data[i])); |
| 751 | } |
| 752 | } |
| 753 | |
| 754 | } // namespace |
| 755 | } // namespace i2c |
| 756 | } // namespace pw |