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authorJack Humbert <jack.humb@gmail.com>2016-04-16 20:26:02 -0400
committerJack Humbert <jack.humb@gmail.com>2016-04-16 20:26:02 -0400
commitc83aa16f1d614c1c10f7597a67ffb9f2ae871951 (patch)
tree6d61c4f255c4ddbc98085a9758693a877e5190b5
parentb8d2e66638409066661e7dd3c66473d583256ec5 (diff)
fixes audio prescaler to emit correct freq
-rw-r--r--keyboard/preonic/keymaps/default/keymap.c52
-rw-r--r--quantum/audio.c12
-rw-r--r--quantum/keymap_common.c6
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