之前在比赛准备的时候有准备过关于锁相环相关的器件，这里介绍一下ADF4351这款宽带频率合成器的使用。
由于我使用的是购买来的成品模块，所以这里着重讲的是软件驱动方面。
首先根据手册可以看到，这是一款35MHz到4.4GHz的锁相环芯片，具有低相位噪声等优点，同时支持小数和整数分频。其实它的VCO是2.2GHz到4.4GHz的振荡器，其余35MHz到2.2GHz全部是由可编程的输出分频器分频得到的。这款芯片的性能是非常好的，输出的信号相位噪声很低，手册上给出的数据是−100dBc/Hz 3 kHz from 2111.28 MHz carrier，在实际测试中发现我手中的这块芯片甚至略微超出了这个参数。
接下来关注到，其配置方式是通过一个3-wire的串行总线完成的，那么可以关注一下这个总线的通信时序：
从时序可以看出，这个三线串口中，有一条使能线，一条时钟线和一条数据线，这个三线串口其实就是SPI接口，所以我们可以直接调用单片机的硬件SPI模块来与其通信。并且需要注意的是，在这个协议当中，后三位表示的是寄存器的编号，而且这个协议的速率不应该高于20Mbps。
关于如何配置这块芯片，就需要大致的了解一下它的工作原理。首先向其输入一个REF-in的参考输入信号，然后这个参考信号在通过一个缓冲器之后，会进入一个名为R counter的计数器中，这里呢就使用了计数器对输入的参考信号进行分频，这一步的分频可以使得分频后的信号拥有更小的相位噪声。同时，由压控振荡器VCO产生的信号经过N counter计数器后，一并通入鉴频鉴相器中。最后将鉴频鉴相器的输入通入电荷泵，通过电荷泵后的电压再用来控制VCO。所以输出频率的计算公式即为：
但是需要注意的是，RF_OUT的值必须是一个2.2G到4.4G之间的值，因为它是压控振荡器VCO的输出值。而最终芯片的输出频率35MHz-4.4GHz需要将RF_OUT的输出值再进行一个2的次方倍分频才行。
关于寄存器的功能，便不再详述，手册上写的非常详尽。
最后附上代码(双击代码区域复制)：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 | /** ****************************************************************************** * File Name : main.c * Description : Main program body ****************************************************************************** * * COPYRIGHT(c) 2017 STMicroelectronics * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "main.h" #include "stm32f1xx_hal.h" /* USER CODE BEGIN Includes */ /* USER CODE END Includes */ /* Private variables ---------------------------------------------------------*/ CRC_HandleTypeDef hcrc; IWDG_HandleTypeDef hiwdg; SPI_HandleTypeDef hspi2; TIM_HandleTypeDef htim6; TIM_HandleTypeDef htim7; WWDG_HandleTypeDef hwwdg; /* USER CODE BEGIN PV */ /* Private variables ---------------------------------------------------------*/ #define PLL_PROT hspi2 typedef struct PLL_Configure{ enum{ PLL_DISABLE = 0, PLL_ENABLE }; unsigned short integer_value; //16-bit Greater than 23, to 65535 unsigned short fractional_value; //12-bit 0 to 4095 unsigned char phase_adjust; //1-bit 0-OFF 1-ON enum{ PHASE_ADJ_OFF = 0, PHASE_ADJ_ON }phase_adjust_type; //unsigned char prescaler; //1-bit 0-(4/5) 1-(8/9) enum prescaler_type{ PRESCALER_4Div5 = 0, PRESCALER_8Div9 }prescaler; //enum prescaler_type prescaler; unsigned short phase_value; //12-bit 0 to 4095, 1 is recommended unsigned short modulus_value; //12-bit Greater than 2, to 4095 unsigned char low_noise_and_low_spur; //2-bit 00b-(Low Noise Mode) 11b-(Low Spur Mode) enum{ LOW_NOISE = 0, LOW_SUPR = 3 }low_nose_and_low_spur_type; unsigned char muxout; //3-bit enum{ MUXOUT_Three_State_Output = 0, MUXOUT_DVdd, MUXOUT_DGND, MUXOUT_R_COUNTER, MUXOUT_N_DIVIDER, MUXOUT_ANALOG_LOCK_DETECT, MUXOUT_DIGITAL_LOCK_DETECT, MUXOUT_RESERVED }muxout_type; //000b-Three-State Output //001b-DVdd //010b-DGND //011b-R Counter Output //100b-N Divider Output //101b-Analog Lock Detect //110b-Digital Lock Detect //111b-Reserved unsigned char reference_doubler; //1-bit 0-Disable 1-Enable unsigned char reference_divide_by2; //1-bit 0-Disable 1-Enable unsigned short r_counter; //10-bit Greater than 1, to 1023 unsigned char double_buffer; //1-bit 0-Disable 1-Enable unsigned char charge_pump_current; //4-bit 0 to 15 /*CHARGE PUMP CURRENT SETTING VALUE 0000 0.31 0001 0.63 0010 0.94 0011 1.25 0100 1.56 0101 1.88 0110 2.19 0111 2.50 1000 2.81 1001 3.13 1010 3.44 1011 3.75 1100 4.06 1101 4.38 1110 4.69 1111 5.00*/ unsigned char LDF; //1-bit 0-FRAC-N 1-INT-N enum{ FRAC_N = 0, INT_N }LDF_type; unsigned char LDP; //1-bit 0-10ns 1-6ns enum{ LDP_10ns = 0, LDP_6ns }LDP_type; unsigned char PD_polarity; //1-bit 0-NEGTIVE 1-POSITIVE enum{ NEGTIVE = 0, POSITIVE }PD_polarity_type; unsigned char power_down; //1-bit 0-Disable 1-Enable unsigned char CP_three_state; //1-bit 0-Disable 1-Enable unsigned char counter_reset; //1-bit 0-Disable 1-Enable unsigned char band_select_clock; //1-bit 0-LOW 1-HIGH enum{ LOW = 0, HIGH }band_select_clock_type; unsigned char antibacklash_pulse_width; //1-bit 0-6ns 1-3ns enum{ ANTIBACKLASH_PULSE_6ns = 0, ANTIBACKLASH_PULSE_3ns }antibacklash_pulse_type; unsigned char charge_cancelation; //1-bit 0-Disable 1-Enable unsigned char cycle_slip_reduction; //1-bit 0-Disable 1-Enable unsigned char clk_div_mode; //2-bit enum{ CLOCK_DIVIDER_OFF = 0, FAST_LOCK_ENABLE, RESYNC_ENABLE }clk_div_mode_type; unsigned short clock_divider_value; //12-bit 0 to 4095 unsigned char feedback_select; //1-bit 0-Divided 1-Fundamental enum{ DIVIDED = 0, FUNDAMENTAL }feedback_select_type; unsigned char RF_divider_select; //3-bit /*RF DIVIDER SELECT 000 /1 001 /2 010 /4 011 /8 100 /16 101 /32 110 /64 */ unsigned char band_select_clock_divider;//8-bit Greater than 1, to 255 unsigned char VCO_power_down; //1-bit 0-Power Up 1-Power Down enum{ VCO_POWER_UP = 0, VCO_POWER_DOWN }VCO_power_down_type; unsigned char mute_till_lock_detect; //1-bit 0-Mute Disable 1-Mute Enable enum{ MUTE_DISABLE = 0, MUTE_ENABLE }mute_till_lock_detect_type; unsigned char AUX_output_select; //1-bit 0-Divided Output 1-Fundamental enum{ DIVIDED_OUTPUTE = 0 //FUNDAMENTAL }AUX_output_select_type; unsigned char AUX_output; //1-bit 0-Disable 1-Enable unsigned char AUX_output_power; //2-bit 0 to 3 /*AUX OUTPUT POWER 00 -4dBm 01 -1dBm 10 +2dBm 11 +5dBm */ unsigned char RF_OUT; //1-bit 0-Disable 1-Enable unsigned char output_power; //2-bit /*OUTPUT POWER 00 -4dBm 01 -1dBm 10 +2dBm 11 +5dBm */ unsigned char LD_pin_mode; //2-bit enum{ LD_LOW = 0, DIGITAL_LOCK_DETECT, //LOW, LD_HIGH = 3 }LD_pin_mode_type; }PLL_CFG; /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); void Error_Handler(void); static void MX_GPIO_Init(void); static void MX_CRC_Init(void); static void MX_IWDG_Init(void); static void MX_TIM6_Init(void); static void MX_TIM7_Init(void); static void MX_WWDG_Init(void); static void MX_SPI2_Init(void); static void MX_NVIC_Init(void); /* USER CODE BEGIN PFP */ /* Private function prototypes -----------------------------------------------*/ void PLL_Config(PLL_CFG *config); void PLL_Init(void); void PLL_Enable(void); void PLL_Disable(void); void PLL_RF_Enable(void); void PLL_RF_Disable(void); /* USER CODE END PFP */ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ int main(void) { /* USER CODE BEGIN 1 */ char a = 0; /* USER CODE END 1 */ /* MCU Configuration----------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* Configure the system clock */ SystemClock_Config(); /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_CRC_Init(); MX_IWDG_Init(); MX_TIM6_Init(); MX_TIM7_Init(); MX_WWDG_Init(); MX_SPI2_Init(); /* Initialize interrupts */ MX_NVIC_Init(); /* USER CODE BEGIN 2 */ HAL_Delay(500); PLL_Init(); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ } /* USER CODE END 3 */ } /** System Clock Configuration */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; /**Initializes the CPU, AHB and APB busses clocks */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.LSIState = RCC_LSI_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } /**Initializes the CPU, AHB and APB busses clocks */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) { Error_Handler(); } /**Configure the Systick interrupt time */ HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000); /**Configure the Systick */ HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK); /* SysTick_IRQn interrupt configuration */ HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0); } /** NVIC Configuration */ static void MX_NVIC_Init(void) { /* EXTI9_5_IRQn interrupt configuration */ HAL_NVIC_SetPriority(EXTI9_5_IRQn, 0, 0); HAL_NVIC_EnableIRQ(EXTI9_5_IRQn); /* EXTI15_10_IRQn interrupt configuration */ HAL_NVIC_SetPriority(EXTI15_10_IRQn, 0, 0); HAL_NVIC_EnableIRQ(EXTI15_10_IRQn); /* SPI2_IRQn interrupt configuration */ HAL_NVIC_SetPriority(SPI2_IRQn, 0, 0); HAL_NVIC_EnableIRQ(SPI2_IRQn); } /* CRC init function */ static void MX_CRC_Init(void) { hcrc.Instance = CRC; if (HAL_CRC_Init(&hcrc) != HAL_OK) { Error_Handler(); } } /* IWDG init function */ static void MX_IWDG_Init(void) { hiwdg.Instance = IWDG; hiwdg.Init.Prescaler = IWDG_PRESCALER_4; hiwdg.Init.Reload = 4095; if (HAL_IWDG_Init(&hiwdg) != HAL_OK) { Error_Handler(); } } /* SPI2 init function */ static void MX_SPI2_Init(void) { hspi2.Instance = SPI2; hspi2.Init.Mode = SPI_MODE_MASTER; hspi2.Init.Direction = SPI_DIRECTION_2LINES; hspi2.Init.DataSize = SPI_DATASIZE_16BIT; hspi2.Init.CLKPolarity = SPI_POLARITY_LOW; hspi2.Init.CLKPhase = SPI_PHASE_1EDGE; hspi2.Init.NSS = SPI_NSS_SOFT; hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2; hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB; hspi2.Init.TIMode = SPI_TIMODE_DISABLE; hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; hspi2.Init.CRCPolynomial = 10; if (HAL_SPI_Init(&hspi2) != HAL_OK) { Error_Handler(); } } /* TIM6 init function */ static void MX_TIM6_Init(void) { TIM_MasterConfigTypeDef sMasterConfig; htim6.Instance = TIM6; htim6.Init.Prescaler = 0; htim6.Init.CounterMode = TIM_COUNTERMODE_UP; htim6.Init.Period = 0; if (HAL_TIM_Base_Init(&htim6) != HAL_OK) { Error_Handler(); } sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET; sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK) { Error_Handler(); } } /* TIM7 init function */ static void MX_TIM7_Init(void) { TIM_MasterConfigTypeDef sMasterConfig; htim7.Instance = TIM7; htim7.Init.Prescaler = 0; htim7.Init.CounterMode = TIM_COUNTERMODE_UP; htim7.Init.Period = 0; if (HAL_TIM_Base_Init(&htim7) != HAL_OK) { Error_Handler(); } sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET; sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; if (HAL_TIMEx_MasterConfigSynchronization(&htim7, &sMasterConfig) != HAL_OK) { Error_Handler(); } } /* WWDG init function */ static void MX_WWDG_Init(void) { hwwdg.Instance = WWDG; hwwdg.Init.Prescaler = WWDG_PRESCALER_1; hwwdg.Init.Window = 64; hwwdg.Init.Counter = 64; if (HAL_WWDG_Init(&hwwdg) != HAL_OK) { Error_Handler(); } } /** Configure pins as * Analog * Input * Output * EVENT_OUT * EXTI */ static void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct; /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOC_CLK_ENABLE(); __HAL_RCC_GPIOD_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(GPIOA, PLL_EN_Pin|RF_OUT_EN_Pin, GPIO_PIN_RESET); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(Load_Enable_GPIO_Port, Load_Enable_Pin, GPIO_PIN_SET); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(LED0_GPIO_Port, LED0_Pin, GPIO_PIN_SET); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin, GPIO_PIN_SET); /*Configure GPIO pins : PLL_EN_Pin RF_OUT_EN_Pin LED0_Pin */ GPIO_InitStruct.Pin = PLL_EN_Pin|RF_OUT_EN_Pin|LED0_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); /*Configure GPIO pin : Load_Enable_Pin */ GPIO_InitStruct.Pin = Load_Enable_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(Load_Enable_GPIO_Port, &GPIO_InitStruct); /*Configure GPIO pin : Digit_Lock_Detect_Pin */ GPIO_InitStruct.Pin = Digit_Lock_Detect_Pin; GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(Digit_Lock_Detect_GPIO_Port, &GPIO_InitStruct); /*Configure GPIO pin : Analog_Lock_Detect_Pin */ GPIO_InitStruct.Pin = Analog_Lock_Detect_Pin; GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(Analog_Lock_Detect_GPIO_Port, &GPIO_InitStruct); /*Configure GPIO pin : LED1_Pin */ GPIO_InitStruct.Pin = LED1_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(LED1_GPIO_Port, &GPIO_InitStruct); } /* USER CODE BEGIN 4 */ void PLL_Enable(void) { HAL_GPIO_WritePin(PLL_EN_GPIO_Port,PLL_EN_Pin,GPIO_PIN_SET); } void PLL_Disable(void) { HAL_GPIO_WritePin(PLL_EN_GPIO_Port,PLL_EN_Pin,GPIO_PIN_RESET); } void PLL_RF_Enable(void) { HAL_GPIO_WritePin(RF_OUT_EN_GPIO_Port,RF_OUT_EN_Pin,GPIO_PIN_SET); } void PLL_RF_Disable(void) { HAL_GPIO_WritePin(RF_OUT_EN_GPIO_Port,RF_OUT_EN_Pin,GPIO_PIN_RESET); } void PLL_Config(PLL_CFG *config) { uint32_t Reg[6]; uint8_t i; Reg[0] &= 0x00000000; Reg[0] |= ((uint32_t)config->integer_value < < 15) & 0x7FFF8000; Reg[0] |= ((uint32_t)config->fractional_value < < 3) & 0x00007FF8; Reg[0] |= 0x00000000; Reg[1] &= 0x00000000; Reg[1] |= ((uint32_t)config->phase_adjust < < 28) & 0x10000000; Reg[1] |= ((uint32_t)config->prescaler < < 27) & 0x08000000; Reg[1] |= ((uint32_t)config->phase_value < < 15) & 0x07FF8000; Reg[1] |= ((uint32_t)config->modulus_value < < 3) & 0x00007FF8; Reg[1] |= 0x00000001; Reg[2] &= 0x00000000; Reg[2] |= ((uint32_t)config->low_noise_and_low_spur < < 29) & 0x60000000; Reg[2] |= ((uint32_t)config->muxout < < 26) & 0x1C000000; Reg[2] |= ((uint32_t)config->reference_doubler < < 25) & 0x02000000; Reg[2] |= ((uint32_t)config->reference_divide_by2 < < 24) & 0x01000000; Reg[2] |= ((uint32_t)config->r_counter < < 14) & 0x00FFC000; Reg[2] |= ((uint32_t)config->double_buffer < < 13) & 0x00002000; Reg[2] |= ((uint32_t)config->charge_pump_current < < 9) & 0x00001E00; Reg[2] |= ((uint32_t)config->LDF < < 8) & 0x00000100; Reg[2] |= ((uint32_t)config->LDP < < 7) & 0x00000080; Reg[2] |= ((uint32_t)config->PD_polarity < < 6) & 0x00000040; Reg[2] |= ((uint32_t)config->power_down < < 5) & 0x00000020; Reg[2] |= ((uint32_t)config->CP_three_state < < 4) & 0x00000010; Reg[2] |= ((uint32_t)config->counter_reset < < 3) & 0x00000008; Reg[2] |= 0x00000002; Reg[3] &= 0x00000000; Reg[3] |= ((uint32_t)config->band_select_clock < < 23) & 0x00800000; Reg[3] |= ((uint32_t)config->antibacklash_pulse_width < < 22) & 0x00400000; Reg[3] |= ((uint32_t)config->charge_cancelation < < 21) & 0x00200000; Reg[3] |= ((uint32_t)config->cycle_slip_reduction < < 18) & 0x00040000; Reg[3] |= ((uint32_t)config->clk_div_mode < < 15) & 0x00018000; Reg[3] |= ((uint32_t)config->clock_divider_value < < 3) & 0x00007FF8; Reg[3] |= 0x00000003; Reg[4] &= 0x00000000; Reg[4] |= ((uint32_t)config->feedback_select < < 23) & 0x00800000; Reg[4] |= ((uint32_t)config->RF_divider_select < < 20) & 0x00700000; Reg[4] |= ((uint32_t)config->band_select_clock_divider< < 12) & 0x000FF000; Reg[4] |= ((uint32_t)config->VCO_power_down < < 11) & 0x00000800; Reg[4] |= ((uint32_t)config->mute_till_lock_detect < < 10) & 0x00000400; Reg[4] |= ((uint32_t)config->AUX_output_select < < 9) & 0x00000200; Reg[4] |= ((uint32_t)config->AUX_output < < 8) & 0x00000100; Reg[4] |= ((uint32_t)config->AUX_output_power < < 6) & 0x000000C0; Reg[4] |= ((uint32_t)config->RF_OUT < < 5) & 0x00000020; Reg[4] |= ((uint32_t)config->output_power < < 3) & 0x00000018; Reg[4] |= 0x00000004; Reg[5] &= 0x00000000; Reg[5] |= ((uint32_t)config->LD_pin_mode < < 22) & 0x00C00000; Reg[5] |= 0x00180000; Reg[5] |= 0x00000005; for(i=0;i<6;i++) { Reg[i] = ((Reg[i] >> 16) & 0x0000FFFF) | ((Reg[i] < < 16) & 0xFFFF0000); } HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_RESET); HAL_SPI_Transmit(&PLL_PROT,(uint8_t*)&Reg[5],2,1000); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_SET); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_RESET); HAL_SPI_Transmit(&PLL_PROT,(uint8_t*)&Reg[4],2,1000); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_SET); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_RESET); HAL_SPI_Transmit(&PLL_PROT,(uint8_t*)&Reg[3],2,1000); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_SET); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_RESET); HAL_SPI_Transmit(&PLL_PROT,(uint8_t*)&Reg[2],2,1000); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_SET); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_RESET); HAL_SPI_Transmit(&PLL_PROT,(uint8_t*)&Reg[1],2,1000); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_SET); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_RESET); HAL_SPI_Transmit(&PLL_PROT,(uint8_t*)&Reg[0],2,1000); HAL_GPIO_WritePin(Load_Enable_GPIO_Port,Load_Enable_Pin,GPIO_PIN_SET); } void PLL_Init(void) { PLL_CFG PLL_InitStruct; PLL_InitStruct.integer_value = 22000; PLL_InitStruct.fractional_value = 0; // PLL_InitStruct.phase_adjust = PHASE_ADJ_OFF; PLL_InitStruct.prescaler = PRESCALER_8Div9; PLL_InitStruct.phase_value = 0; PLL_InitStruct.modulus_value = 2; // PLL_InitStruct.low_noise_and_low_spur = LOW_NOISE; PLL_InitStruct.muxout = MUXOUT_ANALOG_LOCK_DETECT; PLL_InitStruct.reference_doubler = ENABLE; PLL_InitStruct.reference_divide_by2 = ENABLE; PLL_InitStruct.r_counter = 250; PLL_InitStruct.double_buffer = DISABLE; PLL_InitStruct.charge_pump_current = 7; PLL_InitStruct.LDF = INT_N; PLL_InitStruct.LDP = LDP_10ns; PLL_InitStruct.PD_polarity = POSITIVE; PLL_InitStruct.power_down = DISABLE; PLL_InitStruct.CP_three_state = DISABLE; PLL_InitStruct.counter_reset = DISABLE; // PLL_InitStruct.band_select_clock = LOW; PLL_InitStruct.antibacklash_pulse_width = INT_N; PLL_InitStruct.cycle_slip_reduction = DISABLE; PLL_InitStruct.clk_div_mode = FAST_LOCK_ENABLE; PLL_InitStruct.clock_divider_value = 4; // PLL_InitStruct.feedback_select = FUNDAMENTAL; PLL_InitStruct.RF_divider_select = 6; PLL_InitStruct.band_select_clock_divider = 80; PLL_InitStruct.VCO_power_down = VCO_POWER_UP; PLL_InitStruct.mute_till_lock_detect = MUTE_ENABLE; PLL_InitStruct.AUX_output_select = DIVIDED_OUTPUTE; PLL_InitStruct.AUX_output = DISABLE; PLL_InitStruct.AUX_output_power = 0; PLL_InitStruct.RF_OUT = ENABLE; PLL_InitStruct.output_power = 5; // PLL_InitStruct.LD_pin_mode = DIGITAL_LOCK_DETECT; // PLL_Enable(); PLL_Config(&PLL_InitStruct); } void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) { GPIO_PinState tmp; switch(GPIO_Pin) { case Digit_Lock_Detect_Pin: tmp = HAL_GPIO_ReadPin(Digit_Lock_Detect_GPIO_Port,Digit_Lock_Detect_Pin); HAL_GPIO_WritePin(LED0_GPIO_Port,LED0_Pin,!tmp); if(tmp == GPIO_PIN_SET) { PLL_RF_Enable(); } break; case Analog_Lock_Detect_Pin: tmp = HAL_GPIO_ReadPin(Analog_Lock_Detect_GPIO_Port,Analog_Lock_Detect_Pin); HAL_GPIO_WritePin(LED1_GPIO_Port,LED1_Pin,!tmp); break; } } /* USER CODE END 4 */ /** * @brief This function is executed in case of error occurrence. * @param None * @retval None */ void Error_Handler(void) { /* USER CODE BEGIN Error_Handler */ /* User can add his own implementation to report the HAL error return state */ while(1) { } /* USER CODE END Error_Handler */ } #ifdef USE_FULL_ASSERT /** * @brief Reports the name of the source file and the source line number * where the assert_param error has occurred. * @param file: pointer to the source file name * @param line: assert_param error line source number * @retval None */ void assert_failed(uint8_t* file, uint32_t line) { /* USER CODE BEGIN 6 */ /* User can add his own implementation to report the file name and line number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ /* USER CODE END 6 */ } #endif /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
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