回复了主题帖： 2025年测评中心，DigiKey得捷赞助继续，欢迎跟帖推你期待的上线的测品啦~

来点ADI高档ADC吧

发表了主题帖： 【Follow me第二季第1期】补充：AD5270数字电位器的驱动应用

AD5270是1024位、变阻器模式下的温度系数5 ppm/°C、1%电阻容差误差、SPI接口和50-TP存储器数字变阻器，性能十分优秀。 它集业界领先的可变电阻性能与非易失性存储器(NVM)于一体，并提供50次可编程(50-TP)存储器。将电阻值编程写入50-TP存储器之前，可进行无限次调整。这些器件不需要任何外部电压源来帮助熔断熔丝，并提供50次永久编程的机会。在50-TP激活期间，一个永久熔断熔丝指令会将游标位置固定。SPI接口控制时序如下： 使用开发板的SPI接口（任意IO软件模拟SPI）可以完成驱动控制，测试代码如下： // AD5270 commands - new digital potentiometer #define CMD_WR_RDAC 0x01 #define CMD_RD_RDAC 0x02 #define CMD_ST_RDAC 0x03 #define CMD_RST 0x04 #define CMD_RD_MEM 0x05 #define CMD_RD_ADDR 0x06 #define CMD_WR_CTRL 0x07 #define CMD_RD_CTRL 0x08 #define CMD_SHTDN 0x09 void vspi_write_word(const int chip_select, uint16_t data_to_send, const uint8_t bit_order, const uint8_t mode) { vspi->beginTransaction(SPISettings(SPI_FREQ_FAST, bit_order, mode)); digitalWrite(chip_select, LOW); //pull SS slow to prep other end for transfer vspi->transfer16(data_to_send); digitalWrite(chip_select, HIGH); //pull ss high to signify end of data transfer vspi->endTransaction(); } /* Write a 4-bit command and a 10-bit data word */ void AD5270_Write(const int chip_select, uint8_t cmd, uint16_t data){ uint16_t data_word = ((cmd & 0x0F) << 10) | (data & 0x03FF); vspi_write_word(chip_select, data_word, MSBFIRST, SPI_MODE1); } /* Enable/disable rheostat value changes */ void AD5270_LockUnlock(const int chip_select, uint8_t lock){ AD5270_Write(chip_select, CMD_WR_CTRL, lock ? 0 : 0x002); } /* Enable/disable hardware shutdown */ void AD5270_Shutdown(const int chip_select, uint8_t shutdown){ AD5270_Write(chip_select, CMD_SHTDN, shutdown ? 1 : 0); } /* Set the value of the digital rheostat - range is 0-0x3FF (0-100kOhm) */ void AD5270_Set(const int chip_select, uint16_t val) { AD5270_Write(chip_select, CMD_WR_RDAC, val); } #define CHIP_SEL_MEAS 10 // Chip select pin for measuring digital rheostat potentiometer void setup() { // put your setup code here, to run once: // Set voltage measurement gain to 1 (maximum current (5V pk-pk) must be within ADC range) AD5270_Shutdown(CHIP_SEL_MEAS, 1); AD5270_Set(CHIP_SEL_MEAS, 100); } void loop() { // put your main code here, to run repeatedly: } 测试接线和效果：  

上传了资料： MQTTX-Setup-1.11.0-x64.exe

回复了主题帖： TI 新推的两款C2000，一个带NPU，一个64位，有人想玩吗？

高端，p,65有没有

回复了主题帖： 【STM32H7S78-DK】测评+ADC DMA采集1024点FFT计算速度测评

王1979 发表于 2024-11-12 08:32 **** 作者被禁止或删除 内容自动屏蔽 **** 算法调用不麻烦

发表了主题帖： 【STM32H7S78-DK】测评+自适应滤波器计算速度测评

ARM DSP 库提供了 LMS 最小均方自适应滤波和归一化最小均方自适应滤波器，自适应滤波器能够根据输入信号自动调整滤波系数进行数字滤波。对于一些应用来说，由于事先并不知道需要进行操作的参数，例如一些噪声信号的特性，所以要求 使用自适应的系数进行处理。在这种情况下，通常使用自适应滤波器，自适应滤波器使用反馈来调整滤 波器系数以及频率响应。 随着处理器性能的增强，自适应滤波器的应用越来越常见，STM32H7S78具有高性能的DSP运算性能，本帖将在STM32H7S78测试自适应滤波器的性能。 测试代码参考了大佬们的分享， #include "arm_math.h" #include "arm_const_structs.h" #define TEST_LENGTH_SAMPLES 2048 /* 采样点数 */ #define BLOCK_SIZE 2048 /* 调用一次arm_lms_norm_f32处理的采样点个数 */ #define NUM_TAPS 20 /* 滤波器系数个数 */ uint32_t blockSize = BLOCK_SIZE; uint32_t numBlocks = TEST_LENGTH_SAMPLES/BLOCK_SIZE; /* 需要调用arm_lms_norm_f32的次数 */ static float32_t testInput_f32_50Hz_200Hz[TEST_LENGTH_SAMPLES]={0}; /* 源波形 */ static float32_t testInput_f32_REF[TEST_LENGTH_SAMPLES]={0}; /* 参考波形 */ static float32_t test_f32_ERR[TEST_LENGTH_SAMPLES]={0}; /* 误差数据 */ static float32_t testOutput[TEST_LENGTH_SAMPLES]={0}; /* 滤波后的输出 */ static float32_t lmsStateF32[BLOCK_SIZE + NUM_TAPS - 1]={0}; /* 状态缓存，大小numTaps + blockSize - 1 */ static float32_t lmsCoeffs32[NUM_TAPS] = {0}; /* 滤波器系数 */ /* 测试数据 */ const float32_t OrigalData1[2048]= { 0.00000, 0.36677, 0.72529, 1.06752, 1.38594, 1.67365, 1.92468, 2.13407, 2.29805, 2.41413, 2.48113, 2.49924, 2.46995, 2.39603, 2.28138, 2.13093, 1.95044, 1.74633, 1.52547, 1.29494, 1.06183, 0.83301, 0.61491, 0.41334, 0.23333, 0.07898, -0.04666, -0.14163, -0.20510, -0.23738, -0.23987, -0.21495, -0.16591, -0.09678, -0.01218, 0.08287, 0.18316, 0.28343, 0.37862, 0.46405, 0.53553, 0.58958, 0.62349, 0.63545, 0.62458, 0.59094, 0.53557, 0.46034, 0.36798, 0.26186, 0.14594, 0.02454, -0.09778, -0.21643, -0.32697, -0.42528, -0.50772, -0.57132, -0.61382, -0.63386, -0.63098, -0.60568, -0.55941, -0.49453, -0.41421, -0.32239, -0.22356, -0.12265, -0.02488, 0.06453, 0.14042, 0.19802, 0.23302, 0.24184, 0.22170, 0.17080, 0.08840, -0.02514, -0.16832, -0.33850, -0.53200, -0.74414, -0.96942, -1.20162, -1.43402, -1.65960, -1.87125, -2.06199, -2.22519, -2.35480, -2.44554, -2.49308, -2.49418, -2.44684, -2.35033, -2.20528, -2.01367, -1.77877, -1.50506, 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0.65463, 1.00075, 1.32450, 1.61887, 1.87766, 2.09572, 2.26903, 2.39482, 2.47166, 2.49947, 2.47948, 2.41421, 2.30735, 2.16362, 1.98864, 1.78872, 1.57064, 1.34148, 1.10833, 0.87812, 0.65738, 0.45208, 0.26740, 0.10764, -0.02394, -0.12514, -0.19492, -0.23337, -0.24165, -0.22198, -0.17746, -0.11200, -0.03010, 0.06327, 0.16293, 0.26362, 0.36022, 0.44795, 0.52253, 0.58030, 0.61842, 0.63487, 0.62859, 0.59946, 0.54830, 0.47686, 0.38767, 0.28400, 0.16970, 0.04904, -0.07346, -0.19321, -0.30572, -0.40678, -0.49266, -0.56023, -0.60708, -0.63168, -0.63338, -0.61248, -0.57024, -0.50885, -0.43133, -0.34147, -0.24365, -0.14275, -0.04393, 0.04757, 0.12656, 0.18818, 0.22801, 0.24232, 0.22814, 0.18349, 0.10740, 0.00000, -0.13742, -0.30247, -0.49165, -0.70048, -0.92360, -1.15494, -1.38786, -1.61537, -1.83038, -2.02584, -2.19506, -2.33184, -2.43073, -2.48720, -2.49779, -2.46024, -2.37355, -2.23810, -2.05558, -1.82901, -1.56265, -1.26189, -0.93308, -0.58339, -0.22059, 0.14717, 0.51162, 0.86457, 1.19815, 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0.14275, 0.24365, 0.34147, 0.43133, 0.50885, 0.57024, 0.61248, 0.63338, 0.63168, 0.60708, 0.56023, 0.49266, 0.40678, 0.30572, 0.19321, 0.07346, -0.04904, -0.16970, -0.28400, -0.38767, -0.47686, -0.54830, -0.59946, -0.62859, -0.63487, -0.61842, -0.58030, -0.52253, -0.44795, -0.36022, -0.26362, -0.16293, -0.06327, 0.03010, 0.11200, 0.17746, 0.22198, 0.24165, 0.23337, 0.19492, 0.12514, 0.02394, -0.10764, -0.26740, -0.45208, -0.65738, -0.87812, -1.10833, -1.34148, -1.57064, -1.78872, -1.98864, -2.16362, -2.30735, -2.41421, -2.47948, -2.49947, -2.47166, -2.39482, -2.26903, -2.09572, -1.87766, -1.61887, -1.32450, -1.00075, -0.65463, -0.29382, 0.07362, 0.43940, 0.79529, 1.13334, 1.44614, 1.72697, 1.97003, 2.17060, 2.32516, 2.43147, 2.48863, 2.49710, 2.45863, 2.37622, 2.25398, 2.09704, 1.91129, 1.70327, 1.47991, 1.24830, 1.01551, 0.78834, 0.57310, 0.37547, 0.20030, 0.05148, -0.06815, -0.15685, -0.21402, -0.24020, -0.23698, -0.20695, -0.15355, -0.08095, 0.00616, 0.10268, 0.20338, 0.30303, 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0.63386, 0.61382, 0.57132, 0.50772, 0.42528, 0.32697, 0.21643, 0.09778, -0.02454, -0.14594, -0.26186, -0.36798, -0.46034, -0.53557, -0.59094, -0.62458, -0.63545, -0.62349, -0.58958, -0.53553, -0.46405, -0.37862, -0.28343, -0.18316, -0.08287, 0.01218, 0.09678, 0.16591, 0.21495, 0.23987, 0.23738, 0.20510, 0.14163, 0.04666, -0.07898, -0.23333, -0.41334, -0.61491, -0.83301, -1.06183, -1.29494, -1.52547, -1.74633, -1.95044, -2.13093, -2.28138, -2.39603, -2.46995, -2.49924, -2.48113, -2.41413, -2.29805, -2.13407, -1.92468, -1.67365, -1.38594, -1.06752, -0.72529, -0.36677, }; const float32_t MixData1[2048] = { -0.278051, 0.419613, 0.592103, 1.351344, 0.950808, 1.518573, 1.952439, 1.964031, 2.002147, 2.735932, 2.748701, 3.007873, 2.661723, 2.230027, 2.198711, 2.238686, 2.303673, 1.688968, 1.021966, 0.992764, 1.255672, 0.834435, 0.894966, 0.541934, -0.191558, 0.454859, -0.422101, -0.166369, -0.165696, -0.111096, 0.193036, 0.099203, -0.462102, -0.384870, 0.294480, 0.271472, 0.237205, 0.270189, 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}; const float32_t MixData[2048] = { -0.191369, -0.749127, -0.531185, 1.636901, 1.984951, -0.536357, -0.526809, 0.698130, 0.802163, -1.580007, -0.779832, -1.143477, 0.462977, 1.285612, -0.375808, 0.607811, -0.741598, -0.448738, 1.278238, 0.199438, 0.556566, 0.880427, -1.063859, 0.842679, -0.756426, 0.981440, 0.892898, 1.347870, 0.438222, 0.767736, -0.433392, -1.476173, -0.510023, 0.689417, -0.457657, 0.123272, 1.073843, 1.572955, -0.077115, -0.831921, -0.709114, 1.883983, -1.848087, 0.208080, -0.323356, -0.089697, -1.777702, -1.466205, 1.583541, -1.754747, 1.515992, -0.313105, -0.242881, -0.367793, -0.923131, 0.701841, -0.340415, 0.382061, 0.960845, 0.340726, -0.031181, 1.300579, -1.176799, -0.976389, -0.183658, -1.846481, 0.592703, -0.582565, -0.341140, -0.572744, 1.987394, -0.608183, -0.016105, -0.499183, 0.162622, 0.046288, 0.738153, -1.190017, -0.346654, -1.816176, 0.264233, 0.937689, 0.408466, -0.837202, 0.513476, -0.530290, -0.160781, 0.486319, -1.629413, -0.890651, -0.446313, 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6.850237, 7.651105, 7.146910, 6.352025, 6.183520, 5.993922, 8.012459, 6.441806, 6.030844, 6.825159, 6.323066, 6.886529, 5.132140, 5.803993, 7.060870, 6.227052, 6.355260, 8.848466, 8.282246, 6.776619, 5.795912, 6.057793, 9.214122, 6.869101, 7.268129, 7.029081, 8.130347, 6.230249, 6.260183, 5.211649, 5.472602, 7.269470, 6.912228, 7.769458, 6.486948, 7.456511, 7.749295, 8.926703, 6.913637, 6.815894, 7.088230, 7.074207, 6.829103, 8.875026, 8.238620, 6.481127, 7.827610, 8.243983, 6.066656, 5.927471, 6.654590, 7.230047, 7.119509, 6.896261, 7.196357, 6.046410, 6.120738, 7.346869, 6.801541, 6.584296, 5.286987, 7.209935, 7.380413, 5.607311, 6.798960, 6.973972, 7.810840, 6.259502, 6.359475, 6.184767, 5.219459, 7.064596, 7.312455, 6.196338, 6.045742, 5.820075, 6.802202, 8.065646, 4.171872, 4.732984, 8.038709, 6.281535, 6.935907, 8.178235, 8.523277, 7.030259, 7.657438, 7.188683, 7.473293, 6.630315, 5.493502, 7.568678, 7.625452, 6.597252, 6.431136, 5.545781, 6.463156, 6.401551, 6.623049, 8.648526, 7.353456, 6.596998, 7.297770, 7.292613, 8.163939, 7.866269, 7.994731, 7.163869, 7.364719, 8.061693, 7.088825, 5.439744, 7.170877, 6.058343, 6.924883, 6.517801, 6.308143, 8.133026, 6.616336, 6.999758, 7.072493, 5.570238, 8.167932, }; //原始波形由任意波形+ 高斯分布白噪声 + 均匀分布白噪声组成，滤除高斯分布白噪声 + 均匀分布白噪声。 void arm_lms_f32_test2(void) { uint32_t i; arm_lms_norm_instance_f32 lmsS; float32_t *inputF32, *outputF32, *inputREF, *outputERR; /* 如果是实时性的滤波，仅需清零一次 */ memset(lmsCoeffs32,0,sizeof(lmsCoeffs32)); memset(lmsStateF32,0,sizeof(lmsStateF32)); /* 初始化输入输出缓存指针 */ inputF32 = (float32_t *)&MixData[0]; /* 原始波形 */ outputF32 = (float32_t *)&testOutput[0]; /* 滤波后输出波形 */ inputREF = (float32_t *)&OrigalData[0]; /* 参考波形 */ outputERR = (float32_t *)&test_f32_ERR[0]; /* 误差数据 */ /* 归一化LMS初始化 */ arm_lms_norm_init_f32 (&lmsS, /* LMS结构体 */ NUM_TAPS, /* 滤波器系数个数 */ (float32_t *)&lmsCoeffs32[0], /* 滤波 */ &lmsStateF32[0], /* 滤波器系数 */ 0.01, /* 步长 */ blockSize); /* 处理的数据个数 */ /* 实现LMS自适应滤波，这里每次处理1个点 */ for(i=0; i < numBlocks; i++) { arm_lms_norm_f32(&lmsS, /* LMS结构体 */ inputF32 + (i * blockSize), /* 输入数据 */ inputREF + (i * blockSize), /* 输出数据 */ outputF32 + (i * blockSize), /* 参考数据 */ outputERR + (i * blockSize), /* 误差数据 */ blockSize); /* 处理的数据个数 */ } /* 打印滤波后结果 */ for(i=0; i<TEST_LENGTH_SAMPLES; i++) { printf("%f, %f, %f\r\n", MixData[i], outputF32[i], test_f32_ERR[i]); } } 图中红色信号是原始测试波形数据，绿色是滤波后数据，可见噪声毛刺基本被滤除， 性能     计算2048点自适应滤波耗时180个时钟周期，主频配置的是600MHz，即1/600*180=0.3us，足以满足一般实时性要求较高的场合。

发表了主题帖： 【STM32H7S78-DK】测评+ADC DMA采集1024点FFT计算速度测评

在前面帖子实现ADC DMA采集、DSP库添加的基础上，本帖将采集1024点数据进行FFT运算，评估STM32H7S78的DSP性能。 测试代码如下： /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #include "stdio.h" #include "arm_math.h" #include "perf_counter.h" /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN PTD */ /* USER CODE END PTD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN PD */ #define VDDA_APPLI (3300UL) #define VAR_CONVERTED_DATA_INIT_VALUE (__LL_ADC_DIGITAL_SCALE(LL_ADC_RESOLUTION_12B) + 1) #define ADC_CONVERTED_DATA_BUFFER_SIZE 1024 ALIGN_32BYTES (uint16_t uhADCxConvertedData[ADC_CONVERTED_DATA_BUFFER_SIZE]); uint16_t uhADCxConvertedData_Voltage_mVolt[ADC_CONVERTED_DATA_BUFFER_SIZE]; //0: DMA transfer is not completed //1: DMA transfer is completed //2: DMA transfer has not yet been started yet (initial state) __IO uint8_t ubDmaTransferStatus = 2U; /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ ADC_HandleTypeDef hadc2; DMA_HandleTypeDef handle_GPDMA1_Channel0; TIM_HandleTypeDef htim6; UART_HandleTypeDef huart4; /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ static void MPU_Config(void); static void MX_GPIO_Init(void); static void MX_GPDMA1_Init(void); static void MX_TIM6_Init(void); static void MX_UART4_Init(void); static void MX_ADC2_Init(void); /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ /* USER CODE BEGIN PFP */ int __io_putchar(int ch) { HAL_UART_Transmit(&huart4 , (uint8_t *)&ch, 1, 0xFFFF); return ch; } /* USER CODE END PFP */ void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc) { ubDmaTransferStatus = 1; } int tmp_index; #define FFT_LENGTH ADC_CONVERTED_DATA_BUFFER_SIZE float fft_inputbuf[FFT_LENGTH * 2]; float fft_outputbuf[FFT_LENGTH]; uint32_t ifftFlag = 0; uint32_t fftSize = 0; #define TEST_LENGTH_SAMPLES 1024 static float32_t testOutput_f32[TEST_LENGTH_SAMPLES*2]; static float32_t testOutputMag_f32[TEST_LENGTH_SAMPLES*2]; static float32_t testInput_f32[TEST_LENGTH_SAMPLES*2]; static float32_t Phase_f32[TEST_LENGTH_SAMPLES*2]; void PowerPhaseRadians_f32(float32_t *_ptr, float32_t *_phase, uint16_t _usFFTPoints, float32_t _uiCmpValue) { float32_t lX, lY; uint16_t i; float32_t phase; float32_t mag; for (i=0; i <_usFFTPoints; i++) { lX= _ptr[2*i];//实部 lY= _ptr[2*i + 1];//虚部 phase = atan2f(lY, lX);//atan2求解的结果范围是(-pi, pi], 弧度 arm_sqrt_f32((float32_t)(lX*lX+ lY*lY), &mag);//求模 if(_uiCmpValue > mag) { Phase_f32[i] = 0; } else { Phase_f32[i] = phase* 180.0f/3.1415926f;//将求解的结果由弧度转换为角度 } } } static void arm_rfft_f32_app2(void) { uint16_t i; arm_rfft_fast_instance_f32 S; //正变换 ifftFlag = 0; //初始化结构体S中的参数 arm_rfft_fast_init_f32(&S, TEST_LENGTH_SAMPLES); for(i=0; i<TEST_LENGTH_SAMPLES; i++) { //测试波形 //testInput_f32[i] = 1 + cos(2*3.1415926f*50*i/1024 + 3.1415926f/3); testInput_f32[i * 2] = uhADCxConvertedData_Voltage_mVolt[i]; testInput_f32[i * 2 + 1] = 0;//虚部赋值，固定为0. } //1024点实序列快速变换 arm_rfft_fast_f32(&S, testInput_f32, testOutput_f32, ifftFlag); arm_cmplx_mag_f32(testOutput_f32, testOutputMag_f32, TEST_LENGTH_SAMPLES); PowerPhaseRadians_f32(testOutput_f32, Phase_f32, TEST_LENGTH_SAMPLES, 0.5f); //串口打印求解的幅频和相频 for(i=0; i<TEST_LENGTH_SAMPLES; i++) { //printf("%f, %f\r\n", testOutputMag_f32[i], Phase_f32[i]); } } /* USER CODE END 0 */ /** * [url=home.php?mod=space&uid=159083]@brief[/url] The application entry point. * @retval int */ int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MPU Configuration--------------------------------------------------------*/ MPU_Config(); /* MCU Configuration--------------------------------------------------------*/ /* Update SystemCoreClock variable according to RCC registers values. */ SystemCoreClockUpdate(); /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ init_cycle_counter(true); /* USER CODE END Init */ /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_GPDMA1_Init(); MX_TIM6_Init(); MX_UART4_Init(); MX_ADC2_Init(); /* USER CODE BEGIN 2 */ start_cycle_counter(); //DSP_RMS(); int64_t lCycleUsed = stop_cycle_counter(); printf("ADC DMA DEMO\n"); for (tmp_index = 0; tmp_index < ADC_CONVERTED_DATA_BUFFER_SIZE; tmp_index++) { uhADCxConvertedData[tmp_index] = VAR_CONVERTED_DATA_INIT_VALUE; } if (HAL_ADCEx_Calibration_Start(&hadc2, ADC_SINGLE_ENDED) != HAL_OK) { printf("ADC Calibration Err\n"); Error_Handler(); } printf("ADC Calibration End\n"); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ HAL_GPIO_TogglePin(LD4_GPIO_Port, LD4_Pin); if (HAL_ADC_Start_DMA(&hadc2,(uint32_t *)uhADCxConvertedData,ADC_CONVERTED_DATA_BUFFER_SIZE) != HAL_OK) { Error_Handler(); } HAL_Delay(50); if (ubDmaTransferStatus == 1) { ubDmaTransferStatus = 0; for (tmp_index = 0; tmp_index < ADC_CONVERTED_DATA_BUFFER_SIZE; tmp_index++) { uhADCxConvertedData_Voltage_mVolt[tmp_index] = __LL_ADC_CALC_DATA_TO_VOLTAGE(VDDA_APPLI, uhADCxConvertedData[tmp_index], LL_ADC_RESOLUTION_12B); //printf("voltage[%d]=%d mV\n",tmp_index,uhADCxConvertedData_Voltage_mVolt[tmp_index]); //printf("%d\n",uhADCxConvertedData_Voltage_mVolt[tmp_index]); arm_rfft_f32_app2(); printf("cycle counter = %lld\n",lCycleUsed); } } } /* USER CODE END 3 */ } 主要用到的函数是arm_rfft_fast_f32，函数原型是 void arm_rfft_fast_f32( const arm_rfft_fast_instance_f32 * S, float32_t * p, float32_t * pOut, uint8_t ifftFlag) 这个函数用于单精度浮点实数FFT，函数有4个参数： S是FFT实例化句柄，调用函数arm_rfft_fast_init_f32初始化得到，然后供此函数arm_rfft_fast_f32调用。支持32, 64, 128, 256, 512, 1024, 2048, 4096点FFT。 比如做1024点FFT，代码如下： arm_rfft_fast_instance_f32 S; arm_rfft_fast_init_f32(&S, 1024); arm_rfft_fast_f32(&S, testInput_f32, testOutput_f32, ifftFlag); p是实数地址，比如我们要做1024点实数FFT，要保证有1024个缓冲。 pOut是FFT转换结果，转换结果不是实数了，而是复数，按照实部，虚拟，实部，虚部，依次排列。比如做1024点FFT，这里的输出也会有1024个数据，即512个复位。 ifftFlag用于设置正变换和逆变换，ifftFlag=0表示正变换，ifftFlag=1表示逆变换。   测试结果： 调用arm_rfft_fast_f32计算1024点FFT耗时184个时钟周期，主频配置的是600MHz，即1/600*184=0.307us，下图是大佬测试的STM32F4和F1的数据，可见1024点FFT性能可以说是F4的369.25/0.307=1202倍  

回复了主题帖： 【STM32H7S78-DK】测评+TouchGFX显示曲线

版本是TouchGFX 4.24.1 Designer

发表了主题帖： 【STM32H7S78-DK】测评+TouchGFX显示曲线

本帖最后由 dql2016 于 2024-11-4 20:16 编辑 TouchGFX带有丰富的曲线控件，十分方便展示数据动态过程，通过曲线的高速刷新显示，也能体现STM32H7S78强大的图形性能。如下图，选中动态曲线控件，添加到屏幕中：   动态曲线行为选择向左滚动刷新，点数100，数据范围0~3300,ADC采集模拟电压的范围： 打开水平、垂直分割线的显示：     再添加一个文本显示区域用于显示实时数据：   文本显示采用通配符形式<value>，这样在程序中能够动态的更新显示内容：   添加wildcard，添加初始显示值和缓存大小：   同样的方法再添加几个文本显示区，adc用于显示ADC实时采集电压，rms用于显示采集1024点计算的均方根值，time用于显示计算rms值消耗的时间，RMS计算采样CMSIS-DSP库，这样评估STM32H7S78的DSP性能：   通过TouchGFX官网资料可以知道TouchGFX使用的是MVP框架，在MVP框架中所有数据仅能保存在称为 Model 的类对象中，Presenter是视图（View）与Model之间的纽带，View只能通过Presenter来读取数据。MVP框架所有需要保存的数据必须再Model 的类对象。View不能直接读写Model中的数据，必须得通过Presenter来操作，所以先要在Presenter中实现对数据的读写，在ScreenPresenter.hpp中添加读写函数。 在Model.cpp tick中添加模拟产生正弦曲线数据： void Model::tick() { static uint32_t cnt = 0; static time_t raw_time = 1671459593; ++cnt; if (cnt % 60 == 0) { /* Simple counter increase */ ++raw_time; } if (raw_time != last_time) { last_time = raw_time; current_dt = *gmtime(&raw_time); /* Simple gmtime calculation */ /* Notify active presenter */ modelListener->notifyNewDateTime(&current_dt); } { double temp; //if (cnt % 2 == 0) { /* Calculate temperature manually */ temp = 0; for (size_t i = 1; i <= this->sinus_count; i += 2) { temp += sin(2.0 * 3.1415 * (20 * i) * cnt * 20) * (48 / i) + (i == 1 ? 50 : 0); } temp=temp*10+500; modelListener->notifyNewTemp((float)temp); } } } 在Screen1Presenter.cpp中添加实现： void Screen1Presenter::notifyNewTemp(float temp) { view.setTemp(temp); } 在Screen1View.cpp中添加刷新数据到曲线，更新文本显示： void Screen1View::setTemp(float temp) { dynamicGraph1.addDataPoint((int)temp);//更新曲线点数据 Unicode::snprintfFloat(textArea1Buffer, TEXTAREA1_SIZE, "%2.3f", float(12.556)); textArea1.invalidate();//更新文本显示区1 Unicode::snprintfFloat(textArea2Buffer, TEXTAREA2_SIZE, "%2.1f", float(12.5)); textArea2.invalidate();//更新文本显示区2 Unicode::snprintf(textArea3Buffer, TEXTAREA3_SIZE, "%d", 123); textArea3.invalidate();//更新文本显示区3 } 效果： [localvideo]9e1a9d54f0856446dce6e68d43db7dd3[/localvideo]   文本显示区是问号，有没有懂的大佬指点一下，这是啥情况？

发表了主题帖： 【STM32H7S78-DK】测评+图形库的应用TouchGFX初探

原计划是要移植LVGL的，但是在看了一些资料后，发现LVGL暂时不支持STM32H7S78的高性能图形引擎GPU，在详细了解了相关资料后，发现还是ST自家的TouchGFX对齐支持最完善，能够充分发挥其高性能图形特性。TouchGFX框架包含易于使用的拖放式图形构建PC工具TouchGFX Designer (TouchGFXDesigner)以及强大的优化图形处理内核TouchGFX引擎。结合WYSIWYG仿真器和自动代码生成功能，TouchGFX大大简化了GUI开发。TouchGFX拥有自己的上位机TouchGFX Designer用于开发图形UI，当前版本是4.24.1，笔者下载的就是这个版本，而且TouchGFX也集成到了STM32CubeMX生态中，使用起来十分方便。本帖初步探索TouchGFX的应用，后续利用TouchGFX实现电压采集波形的刷新展示。 使用软件： TouchGFX Designer（4.21.4） STM32CubeIDE（自家的IDE，支持最完善） 下载安装好TouchGFX Designer，打开软件，在home主页点击新建项目按钮，就可以开始了，当前版本相比以往的版本优化不少，使用起来十分流程：   在搜索框搜索板卡关键字即可，通过板卡模板创建项目的好处是，各种外设都帮我们配置好了，十分方便快速体验demo和创建项目：     在屏幕1中我加入了一张图片作为背景，然后加入了一个按钮，按钮有多种样式和尺寸可选，这里选的是翻转样式：   然后是配置按钮的参数，主要是按下后触发的回调名称，这里就使用默认的function1了： 点击右下角按钮或者按F4生成工程： 生成工程后，可以在电脑上仿真运行，查看UI基本效果：   也可以直接点击编译下载，将工程烧写到开发板上运行观看效果： 使用stm32cubeide导入工程，添加一个GPIO控制LED： 然后保存更新下代码，在生成的代码中，很容易就能找到需要用户添加逻辑的部分，在User/gui/Screen11view.cpp中添加按键翻转LED的控制代码，这里的函数名和之前创建按钮填入的回调名称一致：   在类中添加声明： 效果 [localvideo]8f44e4ece37af5355632bcf23b152b7a[/localvideo]      

上传了资料： Follow me第二季第1期代码

发表了主题帖： 【STM32H7S78-DK】测评+SPI应用之驱动AD9833

由于STM32H7S78是没有DAC外设的，因此要想产生模拟信号，通常有2种方法，一是PWM加输出滤波器，二是专用DDS芯片。 AD9833是一款低功耗、可编程波形发生器，能够产生正弦波、三角波和方波输出。各种类型的检测、信号激励和时域反射(TDR)应用都需要波形发生器。输出频率和相位可通过软件进行编程，调整简单。无需外部元件。频率寄存器为28位宽，时钟速率为25 MHz时，可以实现0.1 Hz的分辨率；时钟速率为1 MHz时，AD9833可以实现0.004 Hz的分辨率。 AD9833通过一个3线串行接口写入数据。该串行接口能够以最高40 MHz的时钟速率工作，并且与DSP和微控制器标准兼容。该器件采用2.3 V至5.5 V电源供电。主页特性： 特性 数字可编程频率和相位 当供电电压为3 V时，功耗为12.65 mW 输出频率范围：0 MHz至12.5 MHz 28位分辨率（25 MHz基准时钟时为0.1 Hz） 正弦波/三角波/方波输出 2.3 V至5.5 V电源供电 无需外部元件 三线式SPI接口 扩展温度范围： -40 ℃至+105 ℃ 掉电选项 10引脚MSOP封装 通过汽车应用认证 AD9833-EP支持防务和航空航天应用（AQEC标准） 下载 AD9833-EP数据手册 (pdf) 温度范围： −55 ℃至+125 ℃ 受控制造基线 一个装配/测试厂 一个制造厂 增强型产品变更通知 认证数据可应要求提供 V62/14619-01XE DSCC图纸号    使用SPI接口即可与AD9833通信，通常可以使用GPIO模拟方式或者硬件SPI接口，本帖使用硬件SPI接口。查看原理图，得知arduino接口上的SPI接口是SPI4，片选使用的是PF8，不是硬件片选信号： SPI接口配置如下：     PF8配置为GPIO作为片选：     然后在AD98333.h头文件定义相关寄存器： #ifndef INC_AD9833_H_ #define INC_AD9833_H_ #include "main.h" /*** Redefine if necessary ***/ #define AD9833_SPI_PORT hspi4 extern SPI_HandleTypeDef AD9833_SPI_PORT; /*** Control Register Bits (DataSheet AD9833 p. 14, Table 6) ***/ #define B28_CFG (1 << 13) #define HLB_CFG (1 << 12) #define F_SELECT_CFG (1 << 11) #define P_SELECT_CFG (1 << 10) #define RESET_CFG (1 << 8) #define SLEEP1_CFG (1 << 7) #define SLEEP12_CFG (1 << 6) #define OPBITEN_CFG (1 << 5) #define DIV2_CFG (1 << 3) #define MODE_CFG (1 << 1) /*** Bitmask to register access ***/ #define FREQ0_REG 0x4000 #define PHASE0_REG 0xC000 //#define FREQ1_ACCESS 0x8000 //#define PHASE1_ACCESS 0xE000 /*** Waveform Types (DataSheet p. 16, Table 15) ***/ #define WAVEFORM_SINE 0 #define WAVEFORM_TRIANGLE MODE_CFG #define WAVEFORM_SQUARE OPBITEN_CFG | DIV2_CFG #define WAVEFORM_SQUARE_DIV2 OPBITEN_CFG /*** Sleep Modes ***/ #define NO_POWERDOWN 0 #define DAC_POWERDOWN SLEEP12_CFG #define CLOCK_POWERDOWN SLEEP1_CFG #define FULL_POWERDOWN SLEEP12_CFG | SLEEP1_CFG #define FMCLK 25000000 #define BITS_PER_DEG 11.3777777777778 // 4096 / 360 typedef enum { wave_triangle, wave_square, wave_sine, } WaveDef; /* * [url=home.php?mod=space&uid=159083]@brief[/url] Set signal generation frequency * @param Frequency value in uint32_t format */ void AD9833_SetFrequency(uint32_t freq); /* * @brief Set signal generation waveform * @param Waveform in WaveDef Type declared in .h file */ void AD9833_SetWaveform(WaveDef Wave); /* * @brief Set signal generation phase * @param Phase in degrees in uint16_t format. Value can be large then 360 */ void AD9833_SetPhase(uint16_t phase_deg); /* * @brief AD9833 Initial Configuration * @param Type of Waveform, Frequency, Phase in degrees */ void AD9833_Init(WaveDef Wave, uint32_t freq, uint16_t phase_deg); /* * @brief Enable or disable the output of the AD9833 * @param Output state (ON/OFF) */ void AD9833_OutputEnable(uint8_t output_state); /* * @brief Set Sleep Mode Function (Explained in datasheet Table 14) * @param Mode of sleep function defined in title */ void AD9833_SleepMode(uint8_t mode); #endif /* INC_AD9833_H_ */   源码AD9833.c实现初始化、频率、相位设置： //Setup Hardware SPI to POLATRITY HIGH, PHASE 1 EDGE #include "AD9833.h" uint8_t _waveform = WAVEFORM_SINE; uint8_t _sleep_mode = NO_POWERDOWN; uint8_t _freq_source = 0; uint8_t _phase_source = 0; uint8_t _reset_state = 0; /* * @brief Set Chip Select pin to LOW state */ static void AD9833_Select(void) { HAL_GPIO_WritePin(AD9833_FSYNC_GPIO_Port, AD9833_FSYNC_Pin, GPIO_PIN_RESET); } /* * @brief Set Chip Select pin to HIGH state */ static void AD9833_Unselect(void) { HAL_GPIO_WritePin(AD9833_FSYNC_GPIO_Port, AD9833_FSYNC_Pin, GPIO_PIN_SET); } /* * @brief Send data by SPI protocol * @param Data variable in uint16_t format */ static void AD9833_WriteRegister(uint16_t data) { AD9833_Select(); uint8_t LByte = data & 0xff; uint8_t HByte = (data >> 8) & 0xff; HAL_SPI_Transmit(&AD9833_SPI_PORT, &HByte, 1, HAL_MAX_DELAY); HAL_SPI_Transmit(&AD9833_SPI_PORT, &LByte, 1, HAL_MAX_DELAY); AD9833_Unselect(); } /* * @brief Update Control Register Bits */ static void AD9833_WriteCfgReg(void) { uint16_t cfg = 0; cfg |= _waveform; cfg |= _sleep_mode; cfg |= (_freq_source ? F_SELECT_CFG : 0); //it's unimportant because don't use FREQ1 cfg |= (_phase_source ? P_SELECT_CFG : 0); //it's unimportant because don't use PHASE1 cfg |= (_reset_state ? RESET_CFG : 0); cfg |= B28_CFG; AD9833_WriteRegister(cfg); } void AD9833_SetWaveform(WaveDef Wave) { if (Wave == wave_sine) _waveform = WAVEFORM_SINE; else if (Wave == wave_square) _waveform = WAVEFORM_SQUARE; else if (Wave == wave_triangle) _waveform = WAVEFORM_TRIANGLE; AD9833_WriteCfgReg(); } void AD9833_SetFrequency(uint32_t freq) { // TODO: calculate max frequency based on refFrequency. // Use the calculations for sanity checks on numbers. // Sanity check on frequency: Square - refFrequency / 2 // Sine/Triangle - refFrequency / 4 if (freq > (FMCLK >> 1)) //bitwise FMCLK / 2 freq = FMCLK >> 1; else if (freq < 0) freq = 0; uint32_t freq_reg = (float)freq * (float)((1 << 28) / FMCLK); // Tuning word uint16_t LSB = FREQ0_REG | (freq_reg & 0x3FFF); uint16_t MSB = FREQ0_REG | (freq_reg >> 14); AD9833_WriteCfgReg(); // Update Config Register AD9833_WriteRegister(LSB); AD9833_WriteRegister(MSB); } void AD9833_SetPhase(uint16_t phase_deg) { if(phase_deg < 0) phase_deg = 0; else if (phase_deg > 360) phase_deg %= 360; uint16_t phase_val = ((uint16_t)(phase_deg * BITS_PER_DEG)) & 0xFFF; AD9833_WriteRegister(PHASE0_REG | phase_val); } void AD9833_Init(WaveDef Wave, uint32_t freq, uint16_t phase_deg) { AD9833_OutputEnable(0); AD9833_SetWaveform(Wave); AD9833_WriteCfgReg(); AD9833_SetFrequency(freq); AD9833_SetPhase(phase_deg); AD9833_OutputEnable(1); } void AD9833_SleepMode(uint8_t mode) { _sleep_mode = mode; AD9833_WriteCfgReg(); } void AD9833_OutputEnable(uint8_t output_state) { _reset_state = !output_state; AD9833_WriteCfgReg(); } 最后调用接口初始化： AD9833_Init(wave_sine, 100, 0); 将输出频率100Hz的正弦波。 接线： AD9833模块：     波形效果如下，可见正确驱动了芯片：  

发表了主题帖： 【STM32H7S78-DK】测评+DSP计算速度评估

本帖最后由 dql2016 于 2024-10-10 22:33 编辑 在前面的帖子中，顺利的添加了DSP库进行数学计算，本帖添加傻孩子大佬的开源性能评估库perf_counter(https://github.com/GorgonMeducer/perf_counter)进行计算性能的测试，通过计算耗时来衡量DSP性能。   perf_counter是一个基于C语言的模块，提供以下功能： 精确测量系统性能 精确测量函数执行时间 精确测量中断响应延迟 提供精确到us级的阻塞或非阻塞的延时服务 改善伪随机数的随机数特性 提供系统时间戳 …… 它使用了SysTick却不会占用SysTick，支持所有Cortex-M处理器裸机环境和RTOS环境、KEIL、IAR、GCC等编译器平台都支持。下载源码包后得到下面文件： 对于裸机，只需将图中的4个文件加入到工程中即可：   首先在mian.c加入对头文件的引用： #include "perf_counter.h" 然后对 perf_counter 库进行初始化：  init_cycle_counter(false); 或者 init_cycle_counter(true); 如果用户并没有自己初始化 SysTick，传递 false 给函数 init_cycle_counter() 。 如果用户自己初始化了 SysTick，传递true 给函数 init_cycle_counter() 。 本项目生产的工程是初始化了SysTick，所以入口参数是true      在systick中断中调用perfc_port_insert_to_system_timer_insert_ovf_handler()： 将前面帖子中计算RMS的打印屏蔽掉 //DSP库求均方根测试 static void DSP_RMS(void) { float32_t pSrc[10] = {0.7060f, 0.0318f, 0.2769f, 0.0462f, 0.0971f, 0.8235f, 0.6948f, 0.3171f,0.9502f, 0.0344f}; float32_t pResult; uint32_t pIndex; q31_t pSrc1[10]; q31_t pResult1; q15_t pSrc2[10]; q15_t pResult2; //printf("******** stm32h7s78-dk eeworld dsp test ***********\r\n"); arm_rms_f32(pSrc, 10, &pResult); //printf("arm_rms_f32 : pResult = %f\r\n", pResult); /*****************************************************************/ for(pIndex = 0; pIndex < 10; pIndex++) { pSrc1[pIndex] = rand(); } arm_rms_q31(pSrc1, 10, &pResult1); //printf("arm_rms_q31 : pResult = %d\r\n", pResult1); /*****************************************************************/ for(pIndex = 0; pIndex < 10; pIndex++) { pSrc2[pIndex] = rand()%32768; } arm_rms_q15(pSrc2, 10, &pResult2); //printf("arm_rms_q15 : pResult = %d\r\n", pResult2); //printf("******************************************************************\r\n"); } 测量调用该函数耗时： start_cycle_counter(); DSP_RMS(); int64_t lCycleUsed = stop_cycle_counter(); printf("cycle counter = %lld\n",lCycleUsed);   printf如果需要打印64位数据int64、uint64类型，需要开启完整标准输出库的支持： 直接编译下载程序，输出计算打印结果是0，在STM32官方论坛中找到了答案： https://community.st.com/t5/stm32cubeide-mcus/wrong-result-when-printing-a-int64-t-value-using-stm32cubeide/td-p/148913   STM32CubeIDE uses a reduced library by default in order to reduce code size, as it's usually preferred for embedded development. Part of this tradeoff is dropping support for long long ints in printf-type functions. > What can I do to print a 64-bit int value? Change the runtime library from reduced to standard. 之前配置的是精简标准输出库，导致输出不正确。 修改后，打印正确： stm32h7s7 主频配置的是600MHz，1/600 000 000 (s) * 35630(cycle) =5.938*10^-5 (s)=59.38us 可见计算速度还是很快的，总共计算了10个数据的arm_rms_f32、arm_rms_q31、arm_rms_q15。

回复了主题帖： 总感觉不痛快，想找点刺激

okhxyyo 发表于 2024-10-9 16:37 公园20分钟效应不知道你听没听过。下班了到周边环境好的地方散步20分钟会让你心情舒畅很多。我住的小区环境 ... 在家里上班感觉就是不一样啊

发表了主题帖： 【STM32H7S78-DK】测评+DSP测试

本帖最后由 dql2016 于 2024-10-10 21:22 编辑 STM32H7S78采用的是M7内核，支持双精度浮点DSP指令，性能强劲。通常可以在STM32CubeMX配置界面通过如下方法加入DSP库：   但实际测试下来，通过此方法STM32H7S78无法将DSP库添加到工程，因此只能采用手动下载DSP库并添加到STM32CubeIDE工程。 ARM公司提供的数字信号库CMSIS-DSP可以在github上下载，也可以在ST提供的STM32Cube软件包里面找到。由于CMSIS-5.6.0以后版本不再提供编译好的静态库，这里为了方便下载CMSIS-5.6.0版本，解压后主要关注下面3个文件夹： Lib文件夹中包含的底层库包括IAR、KEIL、GCC三个编译器平台，字母l代表小端地址格式，b代表大端地址格式（所有STM32皆为小端地址格式处理器）；字母f代表使用浮点处理单元(FPU) 对于M7内核提供如下3种： arm_cortexM7lfdp_math.lib (Cortex-M7, Little endian, Double Precision Floating Point Unit) arm_cortexM7lfsp_math.lib (Cortex-M7, Little endian, Single Precision Floating Point Unit) arm_cortexM7l_math.lib (Cortex-M7, Little endian) 这里我们使用第1种。 DSP库Source目录包含了各种数学运算库的源码，如果使用添加源码的方式，能够更好的使用编译器的优化功能，这也是5.6.0不再提供静态库的原因，armcc v6无法对静态lib优化。 1）BasicMathFunctions 基本数学函数：提供浮点数的各种基本运算函数，如向量加减乘除等运算。 2）CommonTables 数字信号处理常用参数表。 3）ComplexMathFunctions 复数计算数学函数。 4）ControllerFunctions 控制算法函数。包括正弦余弦，PID电机控制，矢量Clarke变换，矢量Clarke逆变换等。 5）FastMathFunctions 常见快速算法的数学函数。 6）FilteringFunctions 滤波函数功能，主要为FIR和LMS（最小均方根）等滤波函数。 7）MatrixFunctions 矩阵处理函数。包括矩阵加法、矩阵初始化、矩阵反、矩阵乘法、矩阵规模、矩阵减法、矩阵转置等函数。 8）StatisticsFunctions 统计功能函数。如求平均值、最大值、最小值、计算均方根RMS、计算方差/标准差等。 9）SupportFunctions 支持功能函数，如数据拷贝，Q格式和浮点格式相互转换，Q任意格式相互转换。 10）TransformFunctions 变换功能。包括复数FFT（CFFT）/复数FFT逆运算（CIFFT）、实数FFT（RFFT）/实数FFT逆运算（RIFFT）、和DCT（离散余弦变换）和配套的初始化函数。   在工作空间目录下添加DSP文件夹： 将上面的Include、Lib、Source三个文件夹复制到DSP文件夹中，如下图：   然后在STM32CubeIDE指定库路径和头文件路径。 首先添加静态库：   然后添加静态库路径：   添加头文件引用路径：   添加宏定义：   使能硬件浮点运算单元FPU：   添加头文件： #include "arm_math.h" 添加浮点运算测试代码： //DSP库求均方根测试 static void DSP_RMS(void) { float32_t pSrc[10] = {0.7060f, 0.0318f, 0.2769f, 0.0462f, 0.0971f, 0.8235f, 0.6948f, 0.3171f,0.9502f, 0.0344f}; float32_t pResult; uint32_t pIndex; q31_t pSrc1[10]; q31_t pResult1; q15_t pSrc2[10]; q15_t pResult2; printf("******** stm32h7s78-dk eeworld dsp test ***********\r\n"); arm_rms_f32(pSrc, 10, &pResult); printf("arm_rms_f32 : pResult = %f\r\n", pResult); /*****************************************************************/ for(pIndex = 0; pIndex < 10; pIndex++) { pSrc1[pIndex] = rand(); } arm_rms_q31(pSrc1, 10, &pResult1); printf("arm_rms_q31 : pResult = %d\r\n", pResult1); /*****************************************************************/ for(pIndex = 0; pIndex < 10; pIndex++) { pSrc2[pIndex] = rand()%32768; } arm_rms_q15(pSrc2, 10, &pResult2); printf("arm_rms_q15 : pResult = %d\r\n", pResult2); printf("******************************************************************\r\n"); }   调用 计算结果符合预期，可见DSP库被正确的加入到了工程中 附件：

回复了主题帖： 【STM32H7S78-DK】测评+STM32CubeIDE配置ADC DMA采集

freebsder 发表于 2024-9-29 14:30 这个波形看起来有些奇怪。 采集完了，停止采集delay了50ms，没有连续不停采集，这样的是对的

发表了主题帖： 【STM32H7S78-DK】测评+STM32CubeIDE配置ADC DMA采集

本帖最后由 dql2016 于 2024-9-22 21:16 编辑 DMA(Direct Memory Access)—直接存储器存取，是单片机的一个外设，它的主要功能是用来搬数据，但是不需要占用CPU， 即在传输数据的时候，CPU可以干其它的事情，好像是多线程一样。STM32H7S的DMA和STM32F1、F4系列玩法不一样，分为GPDMA（通用DMA）和HPDMA（高性能DMA）。 数据传输支持从外设到存储器或者存储器到存储器， 这里的存储器可以是SRAM或者是FLASH。选择ADC2的通道2，连续转换，DMA单次模式，开启ADC中断，这样当DMA将ADC转换数据搬运到RAM后进入中断回调函数，通知应用处理： 中断开启：   GPDMA选择通道0，标准模式，ADC2请求，数据长度为半字： 在main.c中增加测试代码，在ADC中断置位标准，主循环进行处理： /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #include "stdio.h" /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN PTD */ /* USER CODE END PTD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN PD */ #define VDDA_APPLI (3300UL) #define VAR_CONVERTED_DATA_INIT_VALUE (__LL_ADC_DIGITAL_SCALE(LL_ADC_RESOLUTION_12B) + 1) #define ADC_CONVERTED_DATA_BUFFER_SIZE 256 ALIGN_32BYTES (uint16_t uhADCxConvertedData[ADC_CONVERTED_DATA_BUFFER_SIZE]); uint16_t uhADCxConvertedData_Voltage_mVolt[ADC_CONVERTED_DATA_BUFFER_SIZE]; /* 0: DMA transfer is not completed */ /* 1: DMA transfer is completed */ /* 2: DMA transfer has not yet been started yet (initial state) */ __IO uint8_t ubDmaTransferStatus = 2U; /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ ADC_HandleTypeDef hadc2; DMA_HandleTypeDef handle_GPDMA1_Channel0; TIM_HandleTypeDef htim6; UART_HandleTypeDef huart4; /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ static void MPU_Config(void); static void MX_GPIO_Init(void); static void MX_GPDMA1_Init(void); static void MX_TIM6_Init(void); static void MX_UART4_Init(void); static void MX_ADC2_Init(void); /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ /* USER CODE BEGIN PFP */ int __io_putchar(int ch) { HAL_UART_Transmit(&huart4 , (uint8_t *)&ch, 1, 0xFFFF); return ch; } /* USER CODE END PFP */ void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc) { ubDmaTransferStatus = 1; } int tmp_index; /* USER CODE END 0 */ /** * [url=home.php?mod=space&uid=159083]@brief[/url] The application entry point. * @retval int */ int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MPU Configuration--------------------------------------------------------*/ MPU_Config(); /* MCU Configuration--------------------------------------------------------*/ /* Update SystemCoreClock variable according to RCC registers values. */ SystemCoreClockUpdate(); /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_GPDMA1_Init(); MX_TIM6_Init(); MX_UART4_Init(); MX_ADC2_Init(); /* USER CODE BEGIN 2 */ printf("ADC DMA DEMO\n"); for (tmp_index = 0; tmp_index < ADC_CONVERTED_DATA_BUFFER_SIZE; tmp_index++) { uhADCxConvertedData[tmp_index] = VAR_CONVERTED_DATA_INIT_VALUE; } if (HAL_ADCEx_Calibration_Start(&hadc2, ADC_SINGLE_ENDED) != HAL_OK) { printf("ADC Calibration Err\n"); Error_Handler(); } printf("ADC Calibration End\n"); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ HAL_GPIO_TogglePin(LD4_GPIO_Port, LD4_Pin); if (HAL_ADC_Start_DMA(&hadc2,(uint32_t *)uhADCxConvertedData,ADC_CONVERTED_DATA_BUFFER_SIZE) != HAL_OK) { Error_Handler(); } HAL_Delay(50); if (ubDmaTransferStatus == 1) { ubDmaTransferStatus = 0; for (tmp_index = 0; tmp_index < ADC_CONVERTED_DATA_BUFFER_SIZE; tmp_index++) { uhADCxConvertedData_Voltage_mVolt[tmp_index] = __LL_ADC_CALC_DATA_TO_VOLTAGE(VDDA_APPLI, uhADCxConvertedData[tmp_index], LL_ADC_RESOLUTION_12B); //printf("voltage[%d]=%d mV\n",tmp_index,uhADCxConvertedData_Voltage_mVolt[tmp_index]); printf("%d\n",uhADCxConvertedData_Voltage_mVolt[tmp_index]); } } } /* USER CODE END 3 */ } /** * @brief ADC2 Initialization Function * @param None * @retval None */ static void MX_ADC2_Init(void) { /* USER CODE BEGIN ADC2_Init 0 */ /* USER CODE END ADC2_Init 0 */ ADC_ChannelConfTypeDef sConfig = {0}; /* USER CODE BEGIN ADC2_Init 1 */ /* USER CODE END ADC2_Init 1 */ /** Common config */ hadc2.Instance = ADC2; hadc2.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV10; hadc2.Init.Resolution = ADC_RESOLUTION_12B; hadc2.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc2.Init.ScanConvMode = ADC_SCAN_DISABLE; hadc2.Init.EOCSelection = ADC_EOC_SINGLE_CONV; hadc2.Init.LowPowerAutoWait = DISABLE; hadc2.Init.ContinuousConvMode = ENABLE; hadc2.Init.NbrOfConversion = 1; hadc2.Init.DiscontinuousConvMode = DISABLE; hadc2.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; hadc2.Init.SamplingMode = ADC_SAMPLING_MODE_NORMAL; hadc2.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_ONESHOT; hadc2.Init.Overrun = ADC_OVR_DATA_PRESERVED; hadc2.Init.OversamplingMode = DISABLE; if (HAL_ADC_Init(&hadc2) != HAL_OK) { Error_Handler(); } /** Configure Regular Channel */ sConfig.Channel = ADC_CHANNEL_2; sConfig.Rank = ADC_REGULAR_RANK_1; sConfig.SamplingTime = ADC_SAMPLETIME_6CYCLES_5; sConfig.SingleDiff = ADC_SINGLE_ENDED; sConfig.OffsetNumber = ADC_OFFSET_NONE; sConfig.Offset = 0; sConfig.OffsetSign = ADC_OFFSET_SIGN_NEGATIVE; if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN ADC2_Init 2 */ /* USER CODE END ADC2_Init 2 */ } /** * @brief GPDMA1 Initialization Function * @param None * @retval None */ static void MX_GPDMA1_Init(void) { /* USER CODE BEGIN GPDMA1_Init 0 */ /* USER CODE END GPDMA1_Init 0 */ /* Peripheral clock enable */ __HAL_RCC_GPDMA1_CLK_ENABLE(); /* GPDMA1 interrupt Init */ HAL_NVIC_SetPriority(GPDMA1_Channel0_IRQn, 0, 0); HAL_NVIC_EnableIRQ(GPDMA1_Channel0_IRQn); /* USER CODE BEGIN GPDMA1_Init 1 */ /* USER CODE END GPDMA1_Init 1 */ /* USER CODE BEGIN GPDMA1_Init 2 */ /* USER CODE END GPDMA1_Init 2 */ } /** * @brief TIM6 Initialization Function * @param None * @retval None */ static void MX_TIM6_Init(void) { /* USER CODE BEGIN TIM6_Init 0 */ /* USER CODE END TIM6_Init 0 */ TIM_MasterConfigTypeDef sMasterConfig = {0}; /* USER CODE BEGIN TIM6_Init 1 */ /* USER CODE END TIM6_Init 1 */ htim6.Instance = TIM6; htim6.Init.Prescaler = 0; htim6.Init.CounterMode = TIM_COUNTERMODE_UP; htim6.Init.Period = 299; htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE; 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(); } /* USER CODE BEGIN TIM6_Init 2 */ /* USER CODE END TIM6_Init 2 */ } /** * @brief UART4 Initialization Function * @param None * @retval None */ static void MX_UART4_Init(void) { /* USER CODE BEGIN UART4_Init 0 */ /* USER CODE END UART4_Init 0 */ /* USER CODE BEGIN UART4_Init 1 */ /* USER CODE END UART4_Init 1 */ huart4.Instance = UART4; huart4.Init.BaudRate = 115200; huart4.Init.WordLength = UART_WORDLENGTH_8B; huart4.Init.StopBits = UART_STOPBITS_1; huart4.Init.Parity = UART_PARITY_NONE; huart4.Init.Mode = UART_MODE_TX_RX; huart4.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart4.Init.OverSampling = UART_OVERSAMPLING_16; huart4.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; huart4.Init.ClockPrescaler = UART_PRESCALER_DIV1; huart4.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; if (HAL_UART_Init(&huart4) != HAL_OK) { Error_Handler(); } if (HAL_UARTEx_SetTxFifoThreshold(&huart4, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK) { Error_Handler(); } if (HAL_UARTEx_SetRxFifoThreshold(&huart4, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK) { Error_Handler(); } if (HAL_UARTEx_DisableFifoMode(&huart4) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN UART4_Init 2 */ /* USER CODE END UART4_Init 2 */ } /** * @brief GPIO Initialization Function * @param None * @retval None */ static void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; /* USER CODE BEGIN MX_GPIO_Init_1 */ /* USER CODE END MX_GPIO_Init_1 */ /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOM_CLK_ENABLE(); __HAL_RCC_GPIOD_CLK_ENABLE(); __HAL_RCC_GPIOF_CLK_ENABLE(); __HAL_RCC_GPIOO_CLK_ENABLE(); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(GPIOM, LD4_Pin|LD3_Pin, GPIO_PIN_SET); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(GPIOO, LD1_Pin|LD2_Pin, GPIO_PIN_RESET); /*Configure GPIO pins : LD4_Pin LD3_Pin */ GPIO_InitStruct.Pin = LD4_Pin|LD3_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOM, &GPIO_InitStruct); /*Configure GPIO pins : LD1_Pin LD2_Pin */ GPIO_InitStruct.Pin = LD1_Pin|LD2_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOO, &GPIO_InitStruct); /* USER CODE BEGIN MX_GPIO_Init_2 */ /* USER CODE END MX_GPIO_Init_2 */ } /* USER CODE BEGIN 4 */ /* USER CODE END 4 */ /* MPU Configuration */ static void MPU_Config(void) { MPU_Region_InitTypeDef MPU_InitStruct = {0}; /* Disables the MPU */ HAL_MPU_Disable(); /** Initializes and configures the Region and the memory to be protected */ MPU_InitStruct.Enable = MPU_REGION_ENABLE; MPU_InitStruct.Number = MPU_REGION_NUMBER0; MPU_InitStruct.BaseAddress = 0x08000000; MPU_InitStruct.Size = MPU_REGION_SIZE_64KB; MPU_InitStruct.SubRegionDisable = 0x0; MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0; MPU_InitStruct.AccessPermission = MPU_REGION_PRIV_RO; MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE; MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE; MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE; MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE; HAL_MPU_ConfigRegion(&MPU_InitStruct); /* Enables the MPU */ HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT); } /** * @brief This function is executed in case of error occurrence. * @retval None */ void Error_Handler(void) { /* USER CODE BEGIN Error_Handler_Debug */ /* User can add his own implementation to report the HAL error return state */ __disable_irq(); while (1) { } /* USER CODE END Error_Handler_Debug */ } #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 /* USE_FULL_ASSERT */ 接线，还是上帖的A4管脚：  串口示波器采集波形效果： 视频 [localvideo]ab998c31302e7ccdef895d988b3f8555[/localvideo]    

回复了主题帖： 【STM32H7S78-DK】测评+STM32CubeIDE配置ADC单通道轮询

lugl4313820 发表于 2024-9-21 13:30 看我前面的帖子，秒秒搞定呀，官方的屏驱动好了的，非常简单。 简单的可以，我试了自带的复杂demo，固件太大了，那个一键下载不行，它是下载到内部flash

回复了主题帖： 【STM32H7S78-DK】测评+STM32CubeIDE配置ADC单通道轮询

lugl4313820 发表于 2024-9-21 08:32 我在前面测试过，好象参考电压不是3.3v，你分个压过去测试一下看是不是这样的。 看原理图是3.3V，测试VCC计算也得到3.3V，大佬教我学学touchgfx呀，折腾了一下，无法下载到外部flash

回复了主题帖： 【STM32H7S78-DK】测评+STM32CubeIDE下载程序到外部Flash

秦天qintian0303 发表于 2024-9-20 08:24 外部Flash启动和内部启动有什么差异吗？启动速度等 肯定慢一些了，内部flash贵很多