void tone(uint8_t pin, uint16_t frequency, uint32_t duration)
{
uint32_t count, load;
volatile uint32_t *config;
init_tone();
if (pin >= CORE_NUM_DIGITAL) return;
if (duration) {
count = (frequency * duration / 1000) * 2;
} else {
count = 0xFFFFFFFF;
}
load = (F_BUS / 2) / frequency;
config = portConfigRegister(pin);
__disable_irq();
if (pin != tone_pin) {
if (tone_pin < CORE_NUM_DIGITAL) {
tone_reg[0] = 1; // clear pin
}
tone_pin = pin;
tone_reg = portClearRegister(pin);
tone_reg[0] = 1; // clear pin
tone_reg[384] = 1; // output mode;
*config = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
}
tone_toggle_count = count;
if (PIT_LDVAL3 != load) {
PIT_TCTRL3 = 0;
PIT_LDVAL3 = load;
PIT_TCTRL3 = 3;
}
__enable_irq();
}
void
StompBox::changepar (int npar, int value)
{
switch (npar) {
case 0:
setvolume (value);
break;
case 1:
Phigh = value;
if( value < 0) highb = ((float) value)/64.0f;
if( value > 0) highb = ((float) value)/32.0f;
break;
case 2:
Pmid = value;
if( value < 0) midb = ((float) value)/64.0f;
if( value > 0) midb = ((float) value)/32.0f;
break;
case 3:
Plow = value;
if( value < 0) lowb = ((float) value)/64.0f;
if( value > 0) lowb = ((float) value)/32.0f;
break;
case 4:
Pgain = value;
gain = dB2rap(50.0f * ((float)value)/127.0f - 50.0f);
break;
case 5:
Pmode = value;
init_mode (Pmode);
break;
};
init_tone ();
};
void setup(void) {
init_tone();
input_init();
configure_pot();
set_power_led_on();
return;
}