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[讨论] 【stm32F7英雄联盟大赛】多功能测试仪器-STM32F7 FFT性能测试每秒1358次算不算快？

littleshrimp   2015-10-20 10:44 楼主
今天对STM32F746做了一些FFT性能测试，将2048*4字节的数据从FLASH复制到RAM、做1024点的快速傅里叶变化、求模、取最大值，每转换100次在LCD上显示一次，转换794200次历时584814毫秒，平均每秒转换次数约1358次速度算不算快呢？
image019.png
具体实验内容如下
新键一个项目
image001.png
指定位置并给项目取个名字
image002.png
设备型号选择STM32F746NG
image004.png
在Manage Run-Time Environment里按照下图勾选后点OK
image006.png
Manage Project Items里将文件夹更名
image008.png
在Source文件更里添加三个C文件，取名为”stm32fft test.c” “fft.c” “fft data.c”
image010.png
添加文件后的目录结构
image012.png
在Options for Target里找到C/C++ 选项卡在Define里添加ARM_MATH_CM7 __FPU_PRESENT=1启用FPU
image013.png
Debug里选择ST-Link Debugger
image015.png
Contex-M Target Driver Setup里的ort选择SW
image017.png
将代码修改为附件里的源码编译下载后的效果
image019.png
代码：
stm32f746 fft test.c
  2. #include <stdint.h>
  3. #include "Board_GLCD.h"
  4. #include "GLCD_Config.h"
  6. #include "stm32f7xx_hal.h"
  8. extern GLCD_FONT GLCD_Font_16x24;
  9. extern void fft(void);
  10. char buff[50];
  11. uint32_t ms = 0;
  12. uint32_t counter = 0;
  13. /**
  14. * System Clock Configuration
  15. * System Clock source = PLL (HSE)
  16. * SYSCLK(Hz) = 216000000
  17. * HCLK(Hz) = 216000000
  18. * AHB Prescaler = 1
  19. * APB1 Prescaler = 4
  20. * APB2 Prescaler = 2
  21. * HSE Frequency(Hz) = 25000000
  22. * PLL_M = 25
  23. * PLL_N = 432
  24. * PLL_P = 2
  25. * PLL_Q = 9
  26. * VDD(V) = 3.3
  27. * Main regulator output voltage = Scale1 mode
  28. * Flash Latency(WS) = 7
  29. */
  30. static void SystemClock_Config (void) {
  31. RCC_ClkInitTypeDef RCC_ClkInitStruct;
  32. RCC_OscInitTypeDef RCC_OscInitStruct;
  34. /* Enable HSE Oscillator and activate PLL with HSE as source */
  35. RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  36. RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  37. RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
  38. RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  39. RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  40. RCC_OscInitStruct.PLL.PLLM = 25;
  41. RCC_OscInitStruct.PLL.PLLN = 432;
  42. RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  43. RCC_OscInitStruct.PLL.PLLQ = 9;
  44. HAL_RCC_OscConfig(&RCC_OscInitStruct);
  46. /* Activate the OverDrive to reach the 216 MHz Frequency */
  47. HAL_PWREx_EnableOverDrive();
  49. /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
  50. RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
  51. RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  52. RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  53. RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
  54. RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
  55. HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7);
  56. }
  58. /**
  59. * Configure the MPU attributes as Write Through for SRAM1/2
  60. * The Base Address is 0x20010000 since this memory interface is the AXI.
  61. * The Region Size is 256KB, it is related to SRAM1 and SRAM2 memory size.
  62. */
  63. static void MPU_Config (void) {
  64. MPU_Region_InitTypeDef MPU_InitStruct;
  66. /* Disable the MPU */
  67. HAL_MPU_Disable();
  69. /* Configure the MPU attributes as WT for SRAM */
  70. MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  71. MPU_InitStruct.BaseAddress = 0x20010000;
  72. MPU_InitStruct.Size = MPU_REGION_SIZE_256KB;
  73. MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  74. MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
  75. MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  76. MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  77. MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  78. MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  79. MPU_InitStruct.SubRegionDisable = 0x00;
  80. MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
  82. HAL_MPU_ConfigRegion(&MPU_InitStruct);
  84. /* Enable the MPU */
  85. HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
  86. }
  88. /**
  89. * CPU L1-Cache enable
  90. */
  91. static void CPU_CACHE_Enable (void) {
  93. /* Enable I-Cache */
  94. SCB_EnableICache();
  96. /* Enable D-Cache */
  97. SCB_EnableDCache();
  98. }
  99. void SysTick_Handler(void)
  100. {
  101. ms++;
  102. HAL_IncTick();
  103. }
  104. int main (void) {
  105. int16_t i;
  106. MPU_Config(); /* Configure the MPU */
  107. CPU_CACHE_Enable(); /* Enable the CPU Cache */
  109. HAL_Init(); /* Initialize the HAL Library */
  110. SystemClock_Config(); /* Configure the System Clock */
  111. GLCD_Initialize ();
  112. GLCD_SetBackgroundColor (GLCD_COLOR_BLUE);
  113. GLCD_SetForegroundColor (GLCD_COLOR_WHITE);
  114. GLCD_ClearScreen ();
  115. GLCD_SetFont (&GLCD_Font_16x24);
  116. GLCD_DrawString (5*16, 1*24, " STM32F746 FFT TEST ");
  117. while(1)
  118. {
  119. for(i=0;i<100;i++)
  120. {
  121. fft();
  122. counter++;
  123. }
  124. sprintf(buff,"fft test counter:%d",counter);
  125. GLCD_DrawString (5*16, 2*24, buff);
  126. sprintf(buff,"fft test ms:%d ",ms);
  127. GLCD_DrawString (5*16, 3*24, buff);
  128. }
  129. }
fft.c
  2. #include "arm_math.h"
  3. #include "arm_const_structs.h"
  5. #define TEST_LENGTH_SAMPLES 2048
  7. /* -------------------------------------------------------------------
  8. * External Input and Output buffer Declarations for FFT Bin Example
  9. * ------------------------------------------------------------------- */
  10. extern float32_t testInput_f32_10khz[TEST_LENGTH_SAMPLES];
  11. static float32_t testInput_f32_10khz_RAM[2048];
  12. static float32_t testOutput[TEST_LENGTH_SAMPLES/2];
  14. /* ------------------------------------------------------------------
  15. * Global variables for FFT Bin Example
  16. * ------------------------------------------------------------------- */
  17. uint32_t fftSize = 1024;
  18. uint32_t ifftFlag = 0;
  19. uint32_t doBitReverse = 1;
  21. /* Reference index at which max energy of bin ocuurs */
  22. uint32_t refIndex = 213, testIndex = 0;
  24. /* ----------------------------------------------------------------------
  25. * Max magnitude FFT Bin test
  26. * ------------------------------------------------------------------- */
  28. void fft(void)
  29. {
  31. arm_status status;
  32. float32_t maxValue;
  34. status = ARM_MATH_SUCCESS;
  35. memcpy(testInput_f32_10khz_RAM,testInput_f32_10khz,sizeof(testInput_f32_10khz));
  36. /* Process the data through the CFFT/CIFFT module */
  37. arm_cfft_f32(&arm_cfft_sR_f32_len1024, testInput_f32_10khz_RAM, ifftFlag, doBitReverse);
  39. /* Process the data through the Complex Magnitude Module for
  40. calculating the magnitude at each bin */
  41. arm_cmplx_mag_f32(testInput_f32_10khz_RAM, testOutput, fftSize);
  43. /* Calculates maxValue and returns corresponding BIN value */
  44. arm_max_f32(testOutput, fftSize, &maxValue, &testIndex);
  46. if(testIndex != refIndex)
  47. {
  48. status = ARM_MATH_TEST_FAILURE;
  49. }
  51. /* ----------------------------------------------------------------------
  52. ** Loop here if the signals fail the PASS check.
  53. ** This denotes a test failure
  54. ** ------------------------------------------------------------------- */
  56. if( status != ARM_MATH_SUCCESS)
  57. {
  58. while(1);
  59. }
  60. }
fft data.c
  2. #include "arm_math.h"
  4. /* ----------------------------------------------------------------------
  5. Test Input signal contains 10KHz signal + Uniformly distributed white noise
  6. ** ------------------------------------------------------------------- */
  8. const float32_t testInput_f32_10khz[2048] =
  9. {
  10. -0.865129623056441, 0.000000000000000, -2.655020678073846, 0.000000000000000, 0.600664612949661, 0.000000000000000, 0.080378093886515, 0.000000000000000,
  11. -2.899160484012034, 0.000000000000000, 2.563004262857762, 0.000000000000000, 3.078328403304206, 0.000000000000000, 0.105906778385130, 0.000000000000000,
  12. 0.048366940168201, 0.000000000000000, -0.145696461188734, 0.000000000000000, -0.023417155362879, 0.000000000000000, 2.127729174988954, 0.000000000000000,
  13. -1.176633086028377, 0.000000000000000, 3.690223557991855, 0.000000000000000, -0.622791766173194, 0.000000000000000, 0.722837373872203, 0.000000000000000,
  14. 2.739754205367484, 0.000000000000000, -0.062610410524552, 0.000000000000000, -0.891296810967338, 0.000000000000000, -1.845872258871811, 0.000000000000000,
  15. 1.195039415434387, 0.000000000000000, -2.177388969045026, 0.000000000000000, 1.078649103637905, 0.000000000000000, 2.570976050490193, 0.000000000000000,
  16. -1.383551403404574, 0.000000000000000, 2.392141424058873, 0.000000000000000, 2.858002843205065, 0.000000000000000, -3.682433899725536, 0.000000000000000,
  17. -3.488146646451150, 0.000000000000000, 1.323468578888120, 0.000000000000000, -0.099771155430726, 0.000000000000000, 1.561168082500454, 0.000000000000000,
  18. 1.025026795103179, 0.000000000000000, 0.928841900171200, 0.000000000000000, 2.930499509864950, 0.000000000000000, 2.013349089766430, 0.000000000000000,
  19. 2.381676148486737, 0.000000000000000, -3.081062307950236, 0.000000000000000, -0.389579115537544, 0.000000000000000, 0.181540149166620, 0.000000000000000,
  20. -2.601953341353208, 0.000000000000000, 0.333435137783218, 0.000000000000000, -2.812945856162965, 0.000000000000000, 2.649109640172910, 0.000000000000000,
  21. -1.003963025744654, 0.000000000000000, 1.552460768755035, 0.000000000000000, 0.088641345335247, 0.000000000000000, -2.519951327113426, 0.000000000000000,
  22. -4.341348988610527, 0.000000000000000, 0.557772429359965, 0.000000000000000, -1.671267412948494, 0.000000000000000, 0.733951350960387, 0.000000000000000,
  23. 0.409263788034864, 0.000000000000000, 3.566033071952806, 0.000000000000000, 1.882565173848352, 0.000000000000000, -1.106017073793287, 0.000000000000000,
  24. 0.154456720778718, 0.000000000000000, -2.513205795512153, 0.000000000000000, 0.310978660939421, 0.000000000000000, 0.579706500111723, 0.000000000000000,
  25. 0.000086383683251, 0.000000000000000, -1.311866980897721, 0.000000000000000, 1.840007477574986, 0.000000000000000, -3.253005768451345, 0.000000000000000,
  26. 1.462584328739432, 0.000000000000000, 1.610103610851738, 0.000000000000000, 0.761914676858907, 0.000000000000000, 0.974541361089834, 0.000000000000000,
  27. 0.686845845885983, 0.000000000000000, 1.849153122025191, 0.000000000000000, 0.787800410401453, 0.000000000000000, -1.187438909666279, 0.000000000000000,
  28. -0.754937911044720, 0.000000000000000, 0.084373858395232, 0.000000000000000, -2.600269011710521, 0.000000000000000, -0.962982842142644, 0.000000000000000,
  29. -0.369328108540868, 0.000000000000000, 0.810791418361879, 0.000000000000000, 3.587016488699641, 0.000000000000000, -0.520776145083723, 0.000000000000000,
  30. 0.640249919627884, 0.000000000000000, 1.103122489464969, 0.000000000000000, 2.231779881455556, 0.000000000000000, -1.308035392685241, 0.000000000000000,
  31. 0.424070304330106, 0.000000000000000, -0.200383932651189, 0.000000000000000, -2.365526783356541, 0.000000000000000, -0.989114757436628, 0.000000000000000,
  32. 2.770807688959777, 0.000000000000000, -0.444172737462307, 0.000000000000000, 0.079760979374078, 0.000000000000000, -0.005199118412183, 0.000000000000000,
  33. -0.664712668309527, 0.000000000000000, -0.624171857561896, 0.000000000000000, 0.537306979007338, 0.000000000000000, -2.575955675497642, 0.000000000000000,
  34. 1.562363235756780, 0.000000000000000, 1.814069369848895, 0.000000000000000, -1.293428583392509, 0.000000000000000, -1.026188449495686, 0.000000000000000,
  35. -2.981771815588717, 0.000000000000000, -4.223468103075124, 0.000000000000000, 2.672674782004045, 0.000000000000000, -0.856096801117735, 0.000000000000000,
  36. 0.048517345512563, 0.000000000000000, -0.026860721136222, 0.000000000000000, 0.392932277758187, 0.000000000000000, -1.331740855093099, 0.000000000000000,
  37. -1.894292129477081, 0.000000000000000, -1.425006468460681, 0.000000000000000, -2.721772427617057, 0.000000000000000, -1.616831100216806, 0.000000000000000,
  38. 3.551177651488947, 0.000000000000000, -0.069685667896087, 0.000000000000000, -3.134634907409102, 0.000000000000000, -0.263627598944639, 0.000000000000000,
  39. -1.650469945991350, 0.000000000000000, -2.203580339374399, 0.000000000000000, -0.872203246123242, 0.000000000000000, 1.230782812607287, 0.000000000000000,
  40. 0.257288860093291, 0.000000000000000, 1.989083106173137, 0.000000000000000, -1.985638729453261, 0.000000000000000, -1.416185105842892, 0.000000000000000,
  41. -1.131097688325772, 0.000000000000000, -2.245130805416057, 0.000000000000000, -1.938873996219074, 0.000000000000000, 2.043608361562645, 0.000000000000000,
  42. -0.583727989880841, 0.000000000000000, -1.785266378212929, 0.000000000000000, 1.961457586224753, 0.000000000000000, 1.139400099963223, 0.000000000000000,
  43. -1.979519343363991, 0.000000000000000, 2.003023322818429, 0.000000000000000, 0.229004069076829, 0.000000000000000, 3.452808862193135, 0.000000000000000,
  44. 2.882273808365857, 0.000000000000000, -1.549450501844438, 0.000000000000000, -3.283872089931876, 0.000000000000000, -0.327025884099064, 0.000000000000000,
  45. -0.054979977136430, 0.000000000000000, -1.192280531479012, 0.000000000000000, 0.645539328365578, 0.000000000000000, 2.300832863404618, 0.000000000000000,
  46. -1.092951789535240, 0.000000000000000, -1.017368249363773, 0.000000000000000, -0.142673056169787, 0.000000000000000, 0.831073544881250, 0.000000000000000,
  47. -2.314612531587064, 0.000000000000000, -2.221456299106321, 0.000000000000000, 0.460261143885226, 0.000000000000000, 0.050585301888595, 0.000000000000000,
  48. 0.364373329183988, 0.000000000000000, -1.685956552069538, 0.000000000000000, 0.050664512351055, 0.000000000000000, -0.193355783902718, 0.000000000000000,
  49. -0.158660446046828, 0.000000000000000, 2.394156453841953, 0.000000000000000, -1.562965718554525, 0.000000000000000, -2.199750600869900, 0.000000000000000,
  50. 1.544984022381773, 0.000000000000000, -1.988307216807315, 0.000000000000000, -0.628240722541046, 0.000000000000000, -1.436235771505429, 0.000000000000000,
  51. 1.677013691147313, 0.000000000000000, 1.600741781678228, 0.000000000000000, -0.757380959134706, 0.000000000000000, -4.784797439515566, 0.000000000000000,
  52. 0.265121462834569, 0.000000000000000, 3.862029485934378, 0.000000000000000, 2.386823577249430, 0.000000000000000, -3.655779745436893, 0.000000000000000,
  53. -0.763541621368016, 0.000000000000000, -1.182140388432962, 0.000000000000000, -1.349106114858063, 0.000000000000000, -2.287533624396759, 0.000000000000000,
  54. -0.028603745188423, 0.000000000000000, -1.353580755934427, 0.000000000000000, 0.461602380352937, 0.000000000000000, -0.059599055078928, 0.000000000000000,
  55. -0.929946734342228, 0.000000000000000, 0.065773089295561, 0.000000000000000, 1.106565863102982, 0.000000000000000, 4.719295086373593, 0.000000000000000,
  56. -2.108377703544395, 0.000000000000000, -2.226393620240159, 0.000000000000000, 1.375668397437521, 0.000000000000000, -0.960772428525443, 0.000000000000000,
  57. -2.156313465390571, 0.000000000000000, 1.126060012375311, 0.000000000000000, 2.756485137030720, 0.000000000000000, 0.739639690862600, 0.000000000000000,
  58. 3.914769510295006, 0.000000000000000, 1.685232785586675, 0.000000000000000, 4.079058040970612, 0.000000000000000, -1.174598301660513, 0.000000000000000,
  59. -2.885776587275580, 0.000000000000000, -0.241073635188767, 0.000000000000000, 3.080489872502403, 0.000000000000000, -2.051244183999421, 0.000000000000000,
  60. 0.664330486845139, 0.000000000000000, -1.697798999370016, 0.000000000000000, 1.452369423649782, 0.000000000000000, -1.523532831019280, 0.000000000000000,
  61. 0.171981186587481, 0.000000000000000, -4.685274721583927, 0.000000000000000, -1.336175835319380, 0.000000000000000, 1.419070770428945, 0.000000000000000,
  62. -0.035791601713475, 0.000000000000000, 2.291937971632081, 0.000000000000000, -1.962559313450293, 0.000000000000000, -4.831595589339301, 0.000000000000000,
  63. -1.857055284000925, 0.000000000000000, 2.606271522635512, 0.000000000000000, -0.576447978738030, 0.000000000000000, 0.082299166967720, 0.000000000000000,
  64. 1.888399453494614, 0.000000000000000, -3.564705298046079, 0.000000000000000, -0.939357831083889, 0.000000000000000, -1.903578203697778, 0.000000000000000,
  65. -2.642492215447250, 0.000000000000000, -0.182990405251017, 0.000000000000000, 3.742026478011174, 0.000000000000000, 0.104295803798333, 0.000000000000000,
  66. 1.848678195370347, 0.000000000000000, -1.887384346896369, 0.000000000000000, 0.365048973046045, 0.000000000000000, -0.889638010354219, 0.000000000000000,
  67. 1.173877118428863, 0.000000000000000, -1.178562827540109, 0.000000000000000, 0.610271645685184, 0.000000000000000, 1.831284815697871, 0.000000000000000,
  68. 0.449575390102283, 0.000000000000000, 1.597171905253443, 0.000000000000000, 3.918574971904773, 0.000000000000000, 0.868104027970404, 0.000000000000000,
  69. 0.582643134746494, 0.000000000000000, 2.321256382353331, 0.000000000000000, -0.238118642223180, 0.000000000000000, -2.890287868054370, 0.000000000000000,
  70. 0.970995414625622, 0.000000000000000, 0.666137930891283, 0.000000000000000, -0.202435718709502, 0.000000000000000, 2.057930200518194, 0.000000000000000,
  71. 3.120583443719949, 0.000000000000000, -0.863945271701041, 0.000000000000000, 0.906848893874630, 0.000000000000000, -1.434124930222570, 0.000000000000000,
  72. 0.754659384848783, 0.000000000000000, -5.224154442713778, 0.000000000000000, 2.330229744098967, 0.000000000000000, 1.113946320164698, 0.000000000000000,
  73. 0.523324920322840, 0.000000000000000, 1.750740911548348, 0.000000000000000, -0.899333972913577, 0.000000000000000, 0.228705845203506, 0.000000000000000,
  74. -1.934782624767648, 0.000000000000000, -3.508386237231303, 0.000000000000000, -2.107108523073510, 0.000000000000000, 0.380587645474815, 0.000000000000000,
  75. -0.476200877183279, 0.000000000000000, -2.172086712642198, 0.000000000000000, 1.795372535780299, 0.000000000000000, -2.100318983391055, 0.000000000000000,
  76. -0.022571122461405, 0.000000000000000, 0.674514020010955, 0.000000000000000, -0.148872569390857, 0.000000000000000, 0.298175890592737, 0.000000000000000,
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项目文件
STM32F7 FFT性能测试 project.rar (3.59 MB)
(下载次数: 95, 2015-10-20 10:38 上传)
本帖最后由 littleshrimp 于 2015-10-20 10:50 编辑
虾扯蛋，蛋扯虾，虾扯蛋扯虾
点赞 

回复评论 （8）

沙发 duhang 

用的是最新版的Keill吧，安装完之后感觉用着不适应。
点赞  2015-10-20 10:59

板凳 swisor 

测试项目101都粗线了.
下载先学习学习
点赞  2015-10-20 11:24

4楼 zh2790 

楼主果然高明，我先下载，有空再研究
点赞  2016-5-2 16:42

5楼 通宵敲代码 

你确定是1358次而不是135.8次！
点赞  2016-5-5 15:49

6楼 littleshrimp 

我还有一个STM32F7 FFT的帖子
虾扯蛋，蛋扯虾，虾扯蛋扯虾
点赞  2016-5-5 20:54

7楼 滴水 

楼主，这个我没大有概念。但是我做里一个幂指函数的计算，发现没有F407的板子来的快啊？你知道怎么回事吗？
点赞  2016-5-18 20:47

8楼 xdzhang65 

什么东西？
点赞  2016-12-18 19:53

9楼 littleshrimp 



直接输入固定数据 没有使用ADC
点赞  2016-12-18 20:18
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