mirror of
https://github.com/jhbruhn/eurorack.git
synced 2025-03-15 02:55:49 +00:00
91 lines
1.9 KiB
C++
91 lines
1.9 KiB
C++
#include "drivers/adc.h"
|
|
#include "drivers/dac.h"
|
|
#include "resources.h"
|
|
|
|
using namespace stereo_mix;
|
|
|
|
Dac dacs[8];
|
|
Adc adc;
|
|
|
|
// Default interrupt handlers.
|
|
extern "C" {
|
|
void NMI_Handler() {}
|
|
void HardFault_Handler()
|
|
{
|
|
while (1)
|
|
;
|
|
}
|
|
void MemManage_Handler()
|
|
{
|
|
while (1)
|
|
;
|
|
}
|
|
void BusFault_Handler()
|
|
{
|
|
while (1)
|
|
;
|
|
}
|
|
void UsageFault_Handler()
|
|
{
|
|
while (1)
|
|
;
|
|
}
|
|
void SVC_Handler() {}
|
|
void DebugMon_Handler() {}
|
|
void PendSV_Handler() {}
|
|
|
|
// called every 1ms
|
|
void SysTick_Handler()
|
|
{
|
|
}
|
|
|
|
void DMA1_Channel1_IRQHandler(void)
|
|
{
|
|
if (DMA_GetITStatus(DMA1_IT_TC1) == SET) /* Test if transfer completed on DMA channel 1 */
|
|
{
|
|
adc.OnDMAFinish();
|
|
DMA_ClearITPendingBit(DMA1_IT_TC1);
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
SystemInit();
|
|
|
|
|
|
dacs[0].Init(GPIOB, GPIO_Pin_8);
|
|
dacs[1].Init(GPIOB, GPIO_Pin_9);
|
|
dacs[2].Init(GPIOB, GPIO_Pin_10);
|
|
dacs[3].Init(GPIOB, GPIO_Pin_11);
|
|
dacs[4].Init(GPIOA, GPIO_Pin_8);
|
|
dacs[5].Init(GPIOA, GPIO_Pin_9);
|
|
dacs[6].Init(GPIOA, GPIO_Pin_10);
|
|
dacs[7].Init(GPIOA, GPIO_Pin_11);
|
|
|
|
adc.Init();
|
|
while (true) {
|
|
for(int i = 0; i < 4; i++) {
|
|
uint32_t value_l;
|
|
uint32_t value_r;
|
|
|
|
uint16_t pan_pot = adc.value(ADC_CHANNEL_POT_PAN_1 + i) >> (16 - 12); // adc is only 12 bit anyways
|
|
uint16_t vol_pot = adc.value(ADC_CHANNEL_POT_VOL_1 + i) >> (16 - 12);
|
|
int16_t pan_cv = (adc.value(ADC_CHANNEL_CV_PAN_1 - i) - 32768) >> (16 - 12);
|
|
uint16_t vol_cv = adc.value(ADC_CHANNEL_CV_VOL_1 - i) >> (16 - 12);
|
|
int32_t pan = pan_pot + pan_cv;
|
|
int32_t vol = vol_pot + vol_cv;
|
|
|
|
CONSTRAIN(pan, 0, (1 << 12) - 1);
|
|
CONSTRAIN(vol, 0, (1 << 12) - 1);
|
|
|
|
value_l = (lut_left_sin_pan[pan] * lut_linear_to_exp[vol]) >> 16;
|
|
value_r = (lut_right_cos_pan[pan] * lut_linear_to_exp[vol]) >> 16;
|
|
|
|
dacs[i].Write16(0, value_r);
|
|
dacs[i + 4].Write16(0, value_r);
|
|
dacs[i].Write16(1, value_l);
|
|
dacs[i + 4].Write16(1, value_l);
|
|
}
|
|
}
|
|
}
|