Posted on June 13, 2016 at 09:37Hi,
I need help enabling page read mode in external memory
http://www.issi.com/WW/pdf/66-67WVE4M16EALL-BLL-CLL.pdf
.
This external memory supports faster asynchronous page reads (shown on page 10) but Ican not find needed information in stm32
http://http://www.st.com/content/ccc/resource/technical/document/reference_manual/group0/96/8b/0d/ec/16/22/43/71/DM00224583/files/DM00224583.pdf/jcr:content/translations/en.DM00224583.pdf
if fsmc supports this kind of read operations.
Currently I have bottom setup (for default operation):
SRAM_Read_Timming.AddressSetupTime = 6; // 0 ~ 15
SRAM_Read_Timming.AddressHoldTime = 1; // 1 ~ 15
SRAM_Read_Timming.DataSetupTime = 6; // 1 ~ 256
SRAM_Read_Timming.BusTurnAroundDuration = 0; // 0 ~ 15
SRAM_Read_Timming.CLKDivision = 2; // 2 ~ 16
SRAM_Read_Timming.DataLatency = 2; // 2 ~ 17
SRAM_Read_Timming.AccessMode = FMC_ACCESS_MODE_A;
hsram.Init.NSBank = FMC_NORSRAM_BANK2;
hsram.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE;
hsram.Init.MemoryType = FMC_MEMORY_TYPE_PSRAM;
hsram.Init.MemoryDataWidth = FMC_NORSRAM_MEM_BUS_WIDTH_16;
hsram.Init.BurstAccessMode = FMC_BURST_ACCESS_MODE_DISABLE;
hsram.Init.WaitSignalPolarity = FMC_WAIT_SIGNAL_POLARITY_LOW;
hsram.Init.WaitSignalActive = FMC_WAIT_TIMING_BEFORE_WS;
hsram.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE;
hsram.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE;
hsram.Init.ExtendedMode = FMC_EXTENDED_MODE_DISABLE;
hsram.Init.AsynchronousWait = FMC_ASYNCHRONOUS_WAIT_DISABLE;
hsram.Init.WriteBurst = FMC_WRITE_BURST_DISABLE;
hsram.Init.ContinuousClock = FMC_CONTINUOUS_CLOCK_SYNC_ONLY;
hsram.Init.WriteFifo = FMC_WRITE_FIFO_DISABLE;
hsram.Init.PageSize = FMC_PAGE_SIZE_NONE;
