main.c main関数まで
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/* Includes ------------------------------------------------------------------*/#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#define ARM_MATH_CM4
#include "arm_math.h"
#include "arm_const_structs.h"
#define TAPS 62
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef hadc1;
DAC_HandleTypeDef hdac;
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_ADC1_Init(void);
static void MX_DAC_Init(void);
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
q15_t val;
q15_t val_out_r;
q15_t val_out_i;
q15_t Coeff_r[TAPS] = {(フィルタ係数)};
q15_t Coeff_i[TAPS] = {(フィルタ係数)};
q15_t State_r[TAPS];
q15_t State_i[TAPS];
arm_fir_instance_q15 Instance_r;
arm_fir_instance_q15 Instance_i;
arm_fir_init_q15(&Instance_r, TAPS, Coeff_r, State_r, 1);
arm_fir_init_q15(&Instance_i, TAPS, Coeff_i, State_i, 1);
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_ADC1_Init();
MX_DAC_Init();
/* USER CODE BEGIN 2 */
HAL_DAC_Start(&hdac, DAC_CHANNEL_1);
HAL_DAC_Start(&hdac, DAC_CHANNEL_2);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_ADC_Start(&hadc1);
HAL_ADC_PollForConversion(&hadc1, 0);
val = HAL_ADC_GetValue(&hadc1)-2048;
arm_fir_q15(&Instance_r, &val, &val_out_r, 1);
arm_fir_q15(&Instance_i, &val, &val_out_i, 1);
HAL_DAC_SetValue(&hdac, DAC_CHANNEL_1, DAC_ALIGN_12B_R, 4*val_out_r+2048);
HAL_DAC_SetValue(&hdac, DAC_CHANNEL_2, DAC_ALIGN_12B_R, 4*val_out_i+2048);
}
/* USER CODE END 3 */
}