基于stm32的DTMF信号软件解码

/******************** (C) COPYRIGHT 2007 STMicroelectronics ******************** * File Name : stm32f10x_it.c * Author : MCD Application Team * Date First Issued : 02/05/2007 * Description : Main Interrupt Service Routines. * This file can be used to describe all the exceptions * subroutines that may occur within user application. * When an interrupt happens, the software will branch * automatically to the corresponding routine. * The following routines are all empty, user can write code * for exceptions handlers and peripherals IRQ interrupts. ******************************************************************************** * History: * 05/21/2007: V0.3 * 04/02/2007: V0.2 * 02/05/2007: V0.1 ******************************************************************************** * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE * CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING * INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. *******************************************************************************/ /* Includes ------------------------------------------------------------------*/ #include "stm32f10x_it.h" #include "stdio.h" extern void TDMF_Decode(float decode_data); extern void putstring(char *str); extern void My_putchar(char ch); extern float filter(float *b,int length_b,float ADC_CovnData); extern int N_decode; extern int next_code; extern float b[]; int N_NextCode=0; //控制20ms后是否有下一个码值的 int time=0;//控制20ms的 /* float filter_TestData[100]={0.506782,0.873767,0.999723,0.849903,0.465636,-0.047077, -0.546804,-0.895694,-0.997506,-0.824154,-0.423458,0.094050, 0.585614,0.915635,0.993077,0.796577,0.380341,-0.140814, -0.623124,-0.933545,-0.986446,-0.767234,-0.336380,0.187266, 0.659254,0.949385,0.977628,0.736190,0.291673,-0.233302, -0.693921,-0.963120,-0.966642,-0.703513,-0.246320,0.278822, 0.727049,0.974720,0.953512,0.669276,0.200420,-0.323722, -0.758566,-0.984157,-0.938268,-0.633555,-0.154076,0.367906, 0.788400,0.991413,0.920943,0.596430,0.107390,-0.411273, -0.816486,-0.996470,-0.901576,-0.557981,-0.060466,0.453728, 0.842761,0.999317,0.880210,0.518296,0.013408,-0.495177, -0.867168,-0.999949,-0.856892,-0.477461,0.033679,0.535529, 0.889651,0.998363,0.831674,0.435567,-0.080692,-0.574692, -0.910162,-0.994563,-0.804612,-0.392707,0.127526,0.612581, 0.928655,0.988558,0.775765,0.348977,-0.174078,-0.649112, -0.945088,-0.980360,-0.745198,-0.304472,0.220243,0.684204, 0.959426,0.969989,0.712979,0.259293}; float filter_TestOutData[101]; */ /* float encode_datatest[220]={532.000000,532.000000,532.000000,532.000000,532.000000,532.000000, 532.000000,532.000000,532.000000,1601.284278,1397.850830,1407.094458, 1578.497220,1820.608951,2028.004973,2111.455774,2023.411558,1772.134593, 1420.742732,1071.314190,838.059842,816.415478,1056.017751,1544.617037, 2207.272186,2921.345022,3543.829246,3944.413535,4036.184370,3796.401335, 3272.198651,2569.777999,1829.730443,1194.540049,776.224175,631.981297, 753.671889,1073.469119,1483.963670,1867.410682,2126.569447,2209.266861, 2120.487519,1919.028149,1699.728819,1565.999110,1599.854434,1837.332005, 2255.800799,2776.656486,3282.965303,3647.783996,3766.109331,3582.406087, 3106.687535,2414.925878,1633.451857,910.989599,385.063505,150.931575, 240.586564,616.875512,1184.043605,1811.948752,2367.835668,2747.742015, 2899.784930,2833.693083,2614.467818,2342.085812,2122.676997,2038.737088, 2126.130175,2363.857534,2679.268450,2967.405959,3119.526600,3053.436974, 2737.762138,2203.740264,1541.255660,879.794321,358.831313,94.871068, 153.272583,531.866476,1160.486862,1916.618168,2653.377007,3233.008939, 3557.740320,3590.520051,3360.737566,2953.768338,2487.229003,2080.108492, 1822.656518,1754.630622,1857.305499,2061.094962,2266.630238,2373.694284, 2310.402981,2054.959139,1644.200844,1166.541992,740.904787,486.857122, 493.474503,794.857749,1358.642981,2090.634767,2854.679408,3503.080931, 3910.207122,4001.105972,3768.164581,3271.791212,2625.048567,1966.123785, 1425.497567,1095.927764,1012.582709,1148.048790,1423.157779,1730.587387, 1964.990169,2051.805998,1967.311388,1744.749391,1464.982494,1234.103318, 1153.810124,1292.249015,1662.958936,2217.541347,2854.219515,3440.423860, 3843.957418,3965.066129,3761.429731,3259.785099,2551.174266,1770.854480, 1067.704096,570.554586,359.624827,449.943487,790.644403,1280.063235, 1792.645280,2210.776912,2453.500564,2494.949072,2368.011261,2152.535485, 1951.328762,1860.315781,1940.698777,2200.433251,2589.940322,3013.321240, 3352.350449,3497.212669,3376.158950,2976.445164,2351.043268,1609.150364, 892.576100,343.645143,72.412051,131.204319,502.727003,1104.623242, 1809.324661,2474.260511,2974.966769,3232.976536,3231.741760,3016.884087, 2681.028617,2337.340768,2088.689968,2000.401452,2083.572471,2293.176785, 2541.362398,2722.432406,2742.981502,2549.307663,2144.875333,1593.109784, 1004.521541,511.155380,234.619313,255.647823,592.855422,1196.109616, 1956.350498,2729.609146,3369.450137,3759.970007,3841.348656,3621.808037, 3173.215484,2611.628090,2067.791624,1655.051668,1442.696948,1441.300651, 1603.528477,1839.928794,2045.411902,2129.424583,2041.914433,1788.284080, 1429.376051,1066.383168,814.468890,771.818873,}; */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private function prototypes -----------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ /******************************************************************************* * Function Name : NMIException * Description : This function handles NMI exception. * Input : None * Output : None * Return : None *******************************************************************************/ void NMIException(void) { } /******************************************************************************* * Function Name : HardFaultException * Description : This function handles Hard Fault exception. * Input : None * Output : None * Return : None *******************************************************************************/ void HardFaultException(void) { } /******************************************************************************* * Function Name : MemManageException * Description : This function handles Memory Manage exception. * Input : None * Output : None * Return : None *******************************************************************************/ void MemManageException(void) { } /******************************************************************************* * Function Name : BusFaultException * Description : This function handles Bus Fault exception. * Input : None * Output : None * Return : None *******************************************************************************/ void BusFaultException(void) { } /******************************************************************************* * Function Name : UsageFaultException * Description : This function handles Usage Fault exception. * Input : None * Output : None * Return : None *********************************