RTEMS | bsps/xilinx-zynq: Add QSPI flash driver (!295)

Fri Nov 8 01:32:43 UTC 2024

Aaron Nyholm commented on a discussion on bsps/arm/xilinx-zynq/dev/spi/zynq-qspi-flash-transfer.c: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/295#note_114541

 > +
 > +  return ZQSPI_FLASH_NO_ERROR;
 > +}
 > +
 > +void zqspi_transfer_intr(zqspiflash *driver) {
 > +  uint32_t sr;
 > +  zqspi_transfer_buffer* transfer = &(driver->buf);
 > +
 > +  /* Disable and clear interrupts */
 > +  qspi_reg_write(ZQSPI_QSPI_REG_INTR_DISABLE, 0xFFFFFFFF);
 > +  qspi_reg_write(ZQSPI_QSPI_REG_INTR_STATUS, 0xFFFFFFFF);
 > +  sr = qspi_reg_read(ZQSPI_QSPI_REG_INTR_STATUS);
 > +
 > +  if (transfer->rx_length)
 > +  {
 > +    while (transfer->start && transfer->sending)

Yeah intentional. There is always a TX component to each transfer. You have to send the read command and to receive data.

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/295#note_114541
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