From c83aa16f1d614c1c10f7597a67ffb9f2ae871951 Mon Sep 17 00:00:00 2001 From: Jack Humbert Date: Sat, 16 Apr 2016 20:26:02 -0400 Subject: fixes audio prescaler to emit correct freq --- keyboard/preonic/keymaps/default/keymap.c | 52 +++++++++++++++---------------- quantum/audio.c | 12 ++++--- quantum/keymap_common.c | 6 ++-- 3 files changed, 36 insertions(+), 34 deletions(-) diff --git a/keyboard/preonic/keymaps/default/keymap.c b/keyboard/preonic/keymaps/default/keymap.c index e1f9b62029..6b62623180 100644 --- a/keyboard/preonic/keymaps/default/keymap.c +++ b/keyboard/preonic/keymaps/default/keymap.c @@ -186,48 +186,48 @@ const uint16_t PROGMEM fn_actions[] = { #ifdef AUDIO_ENABLE float start_up[][2] = { - {440.0*pow(2.0,(50)/12.0), 20}, - {440.0*pow(2.0,(62)/12.0), 8}, - {440.0*pow(2.0,(54)/12.0), 20}, - {440.0*pow(2.0,(62)/12.0), 8} + {440.0*pow(2.0,(14)/12.0), 20}, + {440.0*pow(2.0,(26)/12.0), 8}, + {440.0*pow(2.0,(18)/12.0), 20}, + {440.0*pow(2.0,(26)/12.0), 8} }; float tone_qwerty[][2] = { - {440.0*pow(2.0,(59)/12.0), 8}, - {440.0*pow(2.0,(60)/12.0), 8}, + {440.0*pow(2.0,(23)/12.0), 8}, + {440.0*pow(2.0,(24)/12.0), 8}, {0, 4}, - {440.0*pow(2.0,(67)/12.0), 16} + {440.0*pow(2.0,(31)/12.0), 16} }; float tone_colemak[][2] = { - {440.0*pow(2.0,(59)/12.0), 8}, - {440.0*pow(2.0,(60)/12.0), 8}, + {440.0*pow(2.0,(23)/12.0), 8}, + {440.0*pow(2.0,(24)/12.0), 8}, {0, 4}, - {440.0*pow(2.0,(67)/12.0), 12}, + {440.0*pow(2.0,(31)/12.0), 12}, {0, 4}, - {440.0*pow(2.0,(71)/12.0), 12} + {440.0*pow(2.0,(35)/12.0), 12} }; float tone_dvorak[][2] = { - {440.0*pow(2.0,(59)/12.0), 8}, - {440.0*pow(2.0,(60)/12.0), 8}, + {440.0*pow(2.0,(23)/12.0), 8}, + {440.0*pow(2.0,(24)/12.0), 8}, {0, 4}, - {440.0*pow(2.0,(67)/12.0), 8}, + {440.0*pow(2.0,(31)/12.0), 8}, {0, 4}, - {440.0*pow(2.0,(69)/12.0), 8}, + {440.0*pow(2.0,(33)/12.0), 8}, {0, 4}, - {440.0*pow(2.0,(67)/12.0), 8} + {440.0*pow(2.0,(31)/12.0), 8} }; float tone_music[][2] = { - {440.0*pow(2.0,(48)/12.0), 8}, - {440.0*pow(2.0,(50)/12.0), 8}, - {440.0*pow(2.0,(52)/12.0), 8}, - {440.0*pow(2.0,(53)/12.0), 8}, - {440.0*pow(2.0,(55)/12.0), 8}, - {440.0*pow(2.0,(57)/12.0), 8}, - {440.0*pow(2.0,(59)/12.0), 8}, - {440.0*pow(2.0,(60)/12.0), 8} + {440.0*pow(2.0,(12)/12.0), 8}, + {440.0*pow(2.0,(14)/12.0), 8}, + {440.0*pow(2.0,(16)/12.0), 8}, + {440.0*pow(2.0,(17)/12.0), 8}, + {440.0*pow(2.0,(19)/12.0), 8}, + {440.0*pow(2.0,(21)/12.0), 8}, + {440.0*pow(2.0,(23)/12.0), 8}, + {440.0*pow(2.0,(24)/12.0), 8} }; #endif @@ -333,9 +333,9 @@ void process_action_user(keyrecord_t *record) { if (IS_LAYER_ON(_MUSIC)) { if (record->event.pressed) { - play_note(((double)261.626)*pow(2.0, -2.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row)), 0xF); + play_note(((double)261.626)*pow(2.0, -3.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row)), 0xF); } else { - stop_note(((double)261.626)*pow(2.0, -2.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row))); + stop_note(((double)261.626)*pow(2.0, -3.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row))); } } diff --git a/quantum/audio.c b/quantum/audio.c index 5edcccdbe1..470dc8e0c7 100644 --- a/quantum/audio.c +++ b/quantum/audio.c @@ -12,6 +12,8 @@ #define PI 3.14159265 +#define CPU_PRESCALER 8 + // #define PWM_AUDIO #ifdef PWM_AUDIO @@ -244,12 +246,12 @@ ISR(TIMER3_COMPA_vect) { // ICR3 = (int)(((double)F_CPU) / frequency); // Set max to the period // OCR3A = (int)(((double)F_CPU) / frequency) >> 1; // Set compare to half the period voice_place %= voices; - if (place > (frequencies[voice_place] / 500)) { + if (place > (frequencies[voice_place] / 50)) { voice_place = (voice_place + 1) % voices; place = 0.0; } - ICR3 = (int)(((double)F_CPU) / frequencies[voice_place]); // Set max to the period - OCR3A = (int)(((double)F_CPU) / frequencies[voice_place]) >> 1 * duty_place; // Set compare to half the period + ICR3 = (int)(((double)F_CPU) / (frequencies[voice_place] * CPU_PRESCALER)); // Set max to the period + OCR3A = (int)(((double)F_CPU) / (frequencies[voice_place] * CPU_PRESCALER)) >> 1 * duty_place; // Set compare to half the period place++; // if (duty_counter > (frequencies[voice_place] / 500)) { // duty_place = (duty_place % 3) + 1; @@ -281,8 +283,8 @@ ISR(TIMER3_COMPA_vect) { place -= SINE_LENGTH; #else if (note_frequency > 0) { - ICR3 = (int)(((double)F_CPU) / note_frequency); // Set max to the period - OCR3A = (int)(((double)F_CPU) / note_frequency) >> 1; // Set compare to half the period + ICR3 = (int)(((double)F_CPU) / (note_frequency * CPU_PRESCALER)); // Set max to the period + OCR3A = (int)(((double)F_CPU) / (note_frequency * CPU_PRESCALER)) >> 1; // Set compare to half the period } else { ICR3 = 0; OCR3A = 0; diff --git a/quantum/keymap_common.c b/quantum/keymap_common.c index b919166853..899437f447 100644 --- a/quantum/keymap_common.c +++ b/quantum/keymap_common.c @@ -35,9 +35,9 @@ extern keymap_config_t keymap_config; #include "audio.h" float goodbye[][2] = { - {440.0*pow(2.0,(67)/12.0), 8}, - {440.0*pow(2.0,(60)/12.0), 8}, - {440.0*pow(2.0,(55)/12.0), 12}, + {440.0*pow(2.0,(31)/12.0), 8}, + {440.0*pow(2.0,(24)/12.0), 8}, + {440.0*pow(2.0,(19)/12.0), 12}, }; #endif -- cgit v1.2.1