Hello!
I move my device from nRF52811 to nRF52820 (QDAA-C00) and I have a problem when using a comparator and TWI
If I configure TWI0 or TWI1 and use it with external ADC, all work perfect.
If I configure Comparator COMP, it work good too.
But if I enable Comparator while work TWI, TWI stopped imideately.
This is what happens to the TWI bus:

For TWI I use P0.00 (SCL), and P0.01 (SDA).
For COMP I use analog inputs AIN0, AIN1, AIN3 (P0.02, P0.03, P0.05 respectively).
Here is initialisation of TWI:
void I2CInit(void)
{
NRF_TWIM1->INTENSET = 0x40202; // STOPPED ERROR SUSPENDED
NRF_TWIM1->ENABLE = 6;
NRF_TWIM1->PSEL.SCL = 0x0;
NRF_TWIM1->PSEL.SDA = 0x1;
NRF_TWIM1->FREQUENCY = 0x06400000;
NRF_TWIM1->SHORTS = 0x0;
NRF_TWIM1->EVENTS_LASTRX = 1;
NRF_TWIM1->EVENTS_LASTTX = 1;
NRF_TWIM1->TXD.LIST = 0;
NRF_TWIM1->RXD.LIST = 0;
sd_nvic_ClearPendingIRQ(SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQn);
sd_nvic_SetPriority(SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQn, 2);
sd_nvic_EnableIRQ(SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQn);
}
void SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler(void)
{
if(NRF_TWIM1-> EVENTS_STOPPED != 0)
{
EventsCounters.AdcTwiInt++;
NRF_TWIM1->EVENTS_STOPPED = 0;
ADC_TWI_Interrupt();
}
if(NRF_TWIM1-> EVENTS_SUSPENDED != 0)
{
NRF_TWIM1->EVENTS_SUSPENDED = 0;
}
if(NRF_TWIM1->EVENTS_ERROR != 0)
{
NRF_TWIM1->EVENTS_ERROR = 0;
AdcInterfaceError();
}
}
Here is initialisation of COMP:
e_err ComparatorHandlerInit(void)
{
NRF_COMP->PSEL = 2;
NRF_COMP->MODE = 1;
NRF_COMP->REFSEL = 2; // 2.4V
NRF_COMP->ENABLE = 2;
MeasureVccVoltage();
}
I've tried enable and disable COMP interrupts and It didn't change anything.
When I write 2 to NRF_COMP->ENABLE, TWI stops working. And if I write NRF_COMP->ENABLE to zero, TWI continue working.
What I doing wrong?