1.1.13.2.3 Configuring The Library

The SST26 driver library should be configured through the MHC. The following figures show the MHC configuration window for the SST26 driver and brief description.

SST26 Driver with SQI peripheral connected

SST26 Driver with QSPI peripheral in SPI mode connected

SST26 Driver with QSPI peripheral in SQI mode connected

SST26 Driver with connection to Memory Driver

Configuration Options

• PLIB Used:

  • Specifies the Peripheral library connected

• Number Of Clients:

  • Indicates maximum number of clients

  • Always set to one as it supports only a single client

• Number Of Buffer Descriptors

  • This option appears only when SQI peripheral is connected to the driver

  • Indicates Maximum number of SQI DMA Buffer Descriptors to be used to create chain of requests for Read

  • Increase in number of descriptors will allow to read (256 * Number of Descriptors) Bytes from flash at one shot

• SQI Lane Mode:

  • This option appears only when SQI peripheral is connected to the driver

  • Specifies number of lanes to be used for sending the data on SQI

• SQI Chip Select:

  • This option appears only when SQI peripheral is connected to the driver

  • Specifies the Chip select to be used. Should align with Chip select configured in SQI peripheral library settings

• Chip Select Pin:

  • This option appears only when SPI peripheral or QSPI peripheral in SPI mode is connected to the driver

  • GPIO Pin to be used as chip select when connected in SPI mode

• SST26 Start Address:

  • Specifies the flash memory start address to be used for Transfer operations

  • The start address will be populated in the device geometry table DRV_SST26_GEOMETRY

• SST26 Erase Buffer Size:

  • This option appears only when the SST26 driver is connected to the Memory driver for block operations

  • Specifies the size for erase buffer used by Memory driver

  • The size of the buffer should be equal to erase sector size as the memory driver will call DRV_SST26_SectorErase