RE: nRF52832 SPI Slave Interrupt handler

George555 — Sat, 25 Apr 2020 14:58:04 GMT

I think I found the solution. It seems to be working fine now.

I had to trigger the TASKS_ACQUIRE after the peripheral is enabled.

void spis_init(void)
{
    spis_pins_init();

    spis_set_tx_buffer(NULL, 0);
    spis_set_rx_buffer(NULL, 0);

    spis_configure();

    spis_def_set(0xFF);
    spis_orc_set(0xFF);
    
    NRF_SPIS1->EVENTS_END = 0x0UL;
    NRF_SPIS1->EVENTS_ACQUIRED = 0x0UL;

    spis_shorts_enable(SPIS_SHORTS_END_ACQUIRE_Msk);
    
    spis_interrupt_enable(SPIS_INTENSET_ACQUIRED_Msk);
    spis_interrupt_enable(SPIS_INTENSET_END_Msk);
    
    NVIC_SetPriority(SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQn, 6);
    NVIC_ClearPendingIRQ(SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQn);
    NVIC_EnableIRQ(SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQn);

    NRF_SPIS1->ENABLE = (SPIS_ENABLE_ENABLE_Enabled << SPIS_ENABLE_ENABLE_Pos);
    
    NRF_SPIS1->TASKS_ACQUIRE = true;
}