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@ -12,6 +12,7 @@ |
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#include "user_main.h" |
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#include "debounce.h" |
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#include "debug.h" |
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#include "fft_windows.h" |
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// 512 = show 0-5 kHz
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// 256 = show 0-10 kHz
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@ -31,13 +32,16 @@ |
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#define BTN_DOWN 4 |
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// Y axis scaling factors
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#define WAVEFORM_SCALE 0.008f |
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#define WAVEFORM_SCALE 0.007f |
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#define FFT_SCALE 0.25f * 0.3f |
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#define FFT_SPINDLE_SCALE_MULT 0.5f |
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uint32_t audio_samples[SAMPLE_COUNT * 2]; // 2x size needed for complex FFT
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float *audio_samples_f = (float *) audio_samples; |
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// counter for auto repeat
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ms_time_t btn_press_cnt = 0; |
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/** Dot matrix display instance */ |
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DotMatrix_Cfg *disp; |
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@ -50,13 +54,12 @@ uint8_t brightness = 4; |
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/** active rendering mode (visualisation preset) */ |
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enum { |
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MODE_WAVEFORM = 0, |
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MODE_SPECTRUM = 1, |
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MODE_SPECTRUM2 = 2, |
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MODE_SPECTRUM, |
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MODE_SPECTRUM2, |
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MODE_WAVEFORM, |
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MAX_MODE |
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} render_mode; |
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#define MODE_MAX MODE_SPECTRUM2 |
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bool up_pressed = false; |
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bool down_pressed = false; |
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bool left_pressed = false; |
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@ -134,7 +137,7 @@ void spread_samples_for_fft() |
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{ |
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for (int i = SAMPLE_COUNT - 1; i >= 0; i--) { |
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audio_samples_f[i * 2 + 1] = 0; // imaginary
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audio_samples_f[i * 2] = audio_samples_f[i]; // real
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audio_samples_f[i * 2] = audio_samples_f[i] * win_hamming_512[i]; // real
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} |
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} |
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@ -243,25 +246,41 @@ static void gamepad_button_cb(uint32_t btn, bool press) |
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switch (btn) { |
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case BTN_UP: |
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up_pressed = press; |
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if (press) { |
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btn_press_cnt = 0; |
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y_scale += 0.5f; |
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} |
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break; |
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case BTN_DOWN: |
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down_pressed = press; |
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if (press) { |
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btn_press_cnt = 0; |
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if (y_scale > 0.55) y_scale -= 0.5f; |
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} |
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break; |
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case BTN_LEFT: |
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left_pressed = press; |
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if (press) { |
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btn_press_cnt = 0; |
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if (brightness > 0) brightness--; |
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} |
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break; |
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case BTN_RIGHT: |
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right_pressed = press; |
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if (press) { |
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btn_press_cnt = 0; |
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if (brightness < 15) brightness++; |
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} |
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break; |
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case BTN_CENTER: |
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if (!press) { |
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// center button released
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// cycle through modes
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if (render_mode++ == MODE_MAX) { |
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if (++render_mode == MAX_MODE) { |
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render_mode = 0; |
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} |
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} |
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@ -345,35 +364,25 @@ void user_main() |
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user_init(); |
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ms_time_t counter1 = 0; |
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ms_time_t counter2 = 0; |
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ms_time_t btn_scale_cnt = 0; |
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ms_time_t btn_brt_cnt = 0; |
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while (1) { |
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if (ms_loop_elapsed(&counter1, 500)) { |
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// Blink
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HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin); |
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} |
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// hold-to-repeat for up/down buttons (sensitivity)
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// hold-to-repeat
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// This is not the correct way to do it, but good enough
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if (ms_loop_elapsed(&btn_scale_cnt, 50)) { |
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if (ms_loop_elapsed(&btn_press_cnt, 100)) { |
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if (up_pressed) { |
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y_scale += 0.1; |
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y_scale += 0.5; |
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} |
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if (down_pressed) { |
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if (y_scale > 0.1) { |
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y_scale -= 0.1; |
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if (y_scale > 0.55) { |
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y_scale -= 0.5; |
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} |
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} |
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if (up_pressed || down_pressed) { |
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dbg("scale = %.1f", y_scale); |
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} |
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} |
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// hold-to-repeat for left/right buttons (brightness)
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if (ms_loop_elapsed(&btn_brt_cnt, 200)) { |
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if (left_pressed) { |
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if (brightness > 0) { |
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brightness--; |
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@ -386,6 +395,10 @@ void user_main() |
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} |
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} |
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if (up_pressed || down_pressed) { |
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dbg("scale = %.1f", y_scale); |
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} |
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if (left_pressed || right_pressed) { |
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dmtx_intensity(disp, brightness); |
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} |
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