下载验证:
用示波器测试PA8,可以测出1Khz的正弦波。如果不是,修改PWM参数,使其正好
为1Khz。
用连接线连接PA8与PA6(AD转换器输入口)。
用示波器测试PA4(DA转换器输出口),可以得到方波滤波后得到的正弦波。
代码片段和文件信息
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2014-10-11 10:35 FIR滤波器
目录 0 2014-10-09 11:02 FIR滤波器DSP_Lib
目录 0 2014-10-09 11:02 FIR滤波器DSP_LibExamples
目录 0 2014-10-09 11:02 FIR滤波器DSP_LibExamplesarm_class_marks_example
目录 0 2014-10-09 11:02 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARM
文件 405 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_class_marks_example.ini
文件 8217 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM0l_class_marks_example.uvopt
文件 15090 2014-06-10 17:12 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM0l_class_marks_example.uvproj
文件 8417 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM3l_class_marks_example.uvopt
文件 15082 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM3l_class_marks_example.uvproj
文件 8233 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM4lf_class_marks_example.uvopt
文件 15107 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM4lf_class_marks_example.uvproj
文件 4363 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMstartup_ARMCM0.s
文件 5000 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMstartup_ARMCM3.s
文件 5000 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMstartup_ARMCM4.s
文件 7308 2014-06-10 17:06 FIR滤波器DSP_LibExamplesarm_class_marks_examplearm_class_marks_example_f32.c
目录 0 2014-10-09 11:02 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCC
文件 5804 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCARMCMx.ld
文件 405 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_class_marks_example.ini
文件 7549 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM0l_class_marks_example.uvopt
文件 11862 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM0l_class_marks_example.uvproj
文件 7563 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM3l_class_marks_example.uvopt
文件 11854 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM3l_class_marks_example.uvproj
文件 7564 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM4lf_class_marks_example.uvopt
文件 12030 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM4lf_class_marks_example.uvproj
文件 4534 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCstartup_ARMCM0.s
文件 5185 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCstartup_ARMCM3.s
文件 5185 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCstartup_ARMCM4.s
文件 2488 2014-06-10 17:06 FIR滤波器DSP_LibExamplesarm_class_marks_examplesystem_ARMCM0.c
文件 2488 2014-06-10 17:06 FIR滤波器DSP_LibExamplesarm_class_marks_examplesystem_ARMCM3.c
文件 2707 2014-06-10 17:06 FIR滤波器DSP_LibExamplesarm_class_marks_examplesystem_ARMCM4.c
............此处省略1812个文件信息
/* ----------------------------------------------------------------------
* Copyright (C) 2010 ARM Limited. All rights reserved.
*
* $Date: 29. November 2010
* $Revision: V1.0.3
*
* Project: CMSIS DSP Library
* title: arm_class_marks_example_f32.c
*
* Description: Example code to calculate Minimum Maximum
* Mean std and variance of marks obtained in a class
*
* Target Processor: Cortex-M4/Cortex-M3
*
* Version 1.0.3 2010/11/29
* Re-organized the CMSIS folders and updated documentation.
*
* Version 1.0.1 2010/10/05 KK
* Production release and review comments incorporated.
*
* Version 1.0.0 2010/09/20 KK
* Production release and review comments incorporated.
* ------------------------------------------------------------------- */
/**
* @ingroup groupExamples
*/
/**
* @defgroup ClassMarks Class Marks Example
*
* par Description:
* par
* Demonstrates the use the Maximum Minimum Mean Standard Deviation Variance
* and Matrix functions to calculate statistical values of marks obtained in a class.
*
*
ote This example also demonstrates the usage of static initialization.
*
* par Variables Description:
* par
* li c testMarks_f32 points to the marks scored by 20 students in 4 subjects
* li c max_marks Maximum of all marks
* li c min_marks Minimum of all marks
* li c mean Mean of all marks
* li c var Variance of the marks
* li c std Standard deviation of the marks
* li c numStudents Total number of students in the class
*
* par CMSIS DSP Software Library Functions Used:
* par
* - arm_mat_init_f32()
* - arm_mat_mult_f32()
* - arm_max_f32()
* - arm_min_f32()
* - arm_mean_f32()
* - arm_std_f32()
* - arm_var_f32()
*
* Refer
* link arm_class_marks_example_f32.c endlink
*
*/
/** example arm_class_marks_example_f32.c
*/
#include “arm_math.h“
#define USE_STATIC_INIT
/* ----------------------------------------------------------------------
** Global defines
** ------------------------------------------------------------------- */
#define TEST_LENGTH_SAMPLES (20*4)
/* ----------------------------------------------------------------------
** List of Marks scored by 20 students for 4 subjects
** ------------------------------------------------------------------- */
const float32_t testMarks_f32[TEST_LENGTH_SAMPLES] =
{
42.000000 37.000000 81.000000 28.000000
83.000000 72.000000 36.000000 38.000000
32.000000 51.000000 63.000000 64.000000
97.000000 82.000000 95.000000 90.000000
66.000000 51.000000 54.000000 42.000000
67.000000 56.000000 45.000000 57.000000
67.000000 69.000000 35.000000 52.000000
29.000000 81.000000 58.000000 47.000000
38.000000 76.000000 100.000000 29.000000
33
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2014-10-11 10:35 FIR滤波器
目录 0 2014-10-09 11:02 FIR滤波器DSP_Lib
目录 0 2014-10-09 11:02 FIR滤波器DSP_LibExamples
目录 0 2014-10-09 11:02 FIR滤波器DSP_LibExamplesarm_class_marks_example
目录 0 2014-10-09 11:02 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARM
文件 405 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_class_marks_example.ini
文件 8217 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM0l_class_marks_example.uvopt
文件 15090 2014-06-10 17:12 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM0l_class_marks_example.uvproj
文件 8417 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM3l_class_marks_example.uvopt
文件 15082 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM3l_class_marks_example.uvproj
文件 8233 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM4lf_class_marks_example.uvopt
文件 15107 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMarm_cortexM4lf_class_marks_example.uvproj
文件 4363 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMstartup_ARMCM0.s
文件 5000 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMstartup_ARMCM3.s
文件 5000 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleARMstartup_ARMCM4.s
文件 7308 2014-06-10 17:06 FIR滤波器DSP_LibExamplesarm_class_marks_examplearm_class_marks_example_f32.c
目录 0 2014-10-09 11:02 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCC
文件 5804 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCARMCMx.ld
文件 405 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_class_marks_example.ini
文件 7549 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM0l_class_marks_example.uvopt
文件 11862 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM0l_class_marks_example.uvproj
文件 7563 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM3l_class_marks_example.uvopt
文件 11854 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM3l_class_marks_example.uvproj
文件 7564 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM4lf_class_marks_example.uvopt
文件 12030 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM4lf_class_marks_example.uvproj
文件 4534 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCstartup_ARMCM0.s
文件 5185 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCstartup_ARMCM3.s
文件 5185 2014-06-10 17:11 FIR滤波器DSP_LibExamplesarm_class_marks_exampleGCCstartup_ARMCM4.s
文件 2488 2014-06-10 17:06 FIR滤波器DSP_LibExamplesarm_class_marks_examplesystem_ARMCM0.c
文件 2488 2014-06-10 17:06 FIR滤波器DSP_LibExamplesarm_class_marks_examplesystem_ARMCM3.c
文件 2707 2014-06-10 17:06 FIR滤波器DSP_LibExamplesarm_class_marks_examplesystem_ARMCM4.c
............此处省略1812个文件信息
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