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Update table working with goertzel's

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cnlohr
2024-06-24 03:32:34 -07:00
parent 2b75c51cd9
commit 25dc0234c0
2 changed files with 45 additions and 18 deletions
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ch32v/ch32v203-goertzel/adcgoertzel.c
+21 -9
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@@ -68,20 +68,32 @@ SOFTWARE.
#include "ssd1306.h"
#define PWM_PERIOD (31-1)
#define ADC_BUFFSIZE 512
#define GOERTZEL_BUFFER 16384
#define GOERTZEL_BUFFER 8192
volatile uint16_t adc_buffer[ADC_BUFFSIZE];
//const int32_t g_goertzel_omega_per_sample = 151198; // 51/128 * 3.14159 * 65536 * 2
//const int32_t g_goertzel_coefficient = -88021;//2 * cos( g_goertzel_omega_per_sample / 65536 * 180 / 3.141592) * 65536;
//const int32_t g_goertzel_coefficient_s = 97118;//2 * sin( g_goertzel_omega_per_sample / 65536 * 180 / 3.141592 ) * 65536;
const int32_t g_goertzel_omega_per_sample = 1238618695; // 47/256 -> 27.01920 MHz
const int32_t g_goertzel_coefficient = 870249096;
const int32_t g_goertzel_coefficient_s = 1963250500;
//#define PWM_PERIOD (31-1)
//const int32_t g_goertzel_omega_per_sample = 1238618695; // 47/256 -> 27.01920 MHz
//const int32_t g_goertzel_coefficient = 870249096;
//const int32_t g_goertzel_coefficient_s = 1963250500;
/*
#define PWM_PERIOD (31-1)
const int32_t g_goertzel_omega_per_sample = 1228662895; // 0.182118 of whole per step / 27.025000MHz
const int32_t g_goertzel_coefficient = 888414806;
const int32_t g_goertzel_coefficient_s = 1955097223;
*/
#define PWM_PERIOD (28-1)
const int32_t g_goertzel_omega_per_sample = 1154616630; // 0.171143 of whole per step / 0.880162MHz
const int32_t g_goertzel_coefficient = 1021021706;
const int32_t g_goertzel_coefficient_s = 1889232832;
#define LOG_GOERTZEL_LIST 256
int32_t gertzellogs[LOG_GOERTZEL_LIST*2];