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Pranay Dhuri
Pranay Dhuri
Associate III
April 15, 2017
Question

We have SRAM FSMC configuration code available for STM322xG in cubeF2, I want to implement Muxed NOR with the help of same code

  • April 15, 2017
  • 1 reply
  • 444 views
Posted on April 15, 2017 at 13:55

Hi,

As the title I want to implement Muxed NOR on STM32F207ZG Nucleo board

following is SRAM read write code.

for (uwIndex = 0; uwIndex < BUFFER_SIZE; uwIndex++)

{

*(__IO uint16_t*) (SRAM_BANK_ADDR + WRITE_READ_ADDR + 2*uwIndex) = aTxBuffer[uwIndex];

}

/* Read back data from the SRAM memory */

for (uwIndex = 0; uwIndex < BUFFER_SIZE; uwIndex++)

{

aRxBuffer[uwIndex] = *(__IO uint16_t*) (SRAM_BANK_ADDR + WRITE_READ_ADDR + 2*uwIndex);

}

so for muxed NOR how we will be defining the address and data as it has common address and data lines?

where the control signals are being set? 

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    1 reply

    Tesla DeLorean
    Tesla DeLorean
    Guru
    April 15, 2017
    Posted on April 15, 2017 at 17:43

    That would be a function of the FSMC, you'd need to configure that correctly, and then as you access addresses within the ARM address space these are translated to the signal/sequences on the external bus.

    As I recall there are 4x 64MB regions within the 0x60000000..0x6FFFFFFF address space that fall under the control of the FSMC

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