Is it possible to drive peripheral devices with octospi?

[dh_leslie]

In my design, I want to drive  a dac with octospi.

I need to transmit data via the interface in DAC data frame without any instruction and address.

like：

 *(__IO uint8_t*)&OCTOSPI1->DR = data[i];

void OCTOSPI1_Init(void)
{
    OCTOSPI1->CR &= ~OCTOSPI_CR_EN;
    while ((OCTOSPI1->CR & OCTOSPI_CR_EN) != 0);

    OCTOSPI1->DCR1 = (0 << OCTOSPI_DCR1_CSHT_Pos) | (2 << OCTOSPI_DCR1_DEVSIZE_Pos);

    OCTOSPI1->CCR = (0b11 << OCTOSPI_CCR_DMODE_Pos);   // Data on 4 lines

    OCTOSPI1->DCR2 = 3;		// prescaler = 4

    OCTOSPI1->DLR = 2; 		// 2

    OCTOSPI1->CR |= OCTOSPI_CR_EN;

    MODIFY_REG(OCTOSPI1->CR, OCTOSPI_CR_FMODE, 0x00000000);
}

void OCTOSPI1_WriteData(uint8_t* data, uint32_t length)
{
    for (uint32_t i = 0; i < length; i++) {
        while (!(OCTOSPI1->SR & OCTOSPI_SR_FTF)); // wait for FIFO available
        *(__IO uint8_t*)&OCTOSPI1->DR = data[i];
    }

    // wait for transmission completion
    while (!(OCTOSPI1->SR & OCTOSPI_SR_TCF));
    OCTOSPI1->FCR |= OCTOSPI_FCR_CTCF; // clear transmission completion flag
}

The operation above will block the mcu totally.

Is it possible to do that by octospi and how to configure?

[Tesla DeLorean]

I suspect you can do that, the different phases are more of a HAL manifestation. Check library source vs references manual 

[dh_leslie]

it’ better to know how the hardware works. Only to read the reference manual doesn’t help, and going through various register combinations is also impossible.