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CAlex's avatar
CAlex
Icon for Contributor rankContributor
2 years ago

How to use on chip memory by HPS baremetal

Hi, it's based on CycloneV soc dev kit, the on chip memory was linked to H2F AXI(128bit wide). So I set the OCMemory as 128 bit and writeable RAM. In the HPS code I setup the FPGA image, openned ...
EBERLAZARE_I_Intel's avatar
EBERLAZARE_I_Intel
Icon for Regular Contributor rankRegular Contributor
2 years ago

Hi,


We do not have the examples, from our side.


You need to check out the available functions for your SDMMC and experiment it:

https://github.com/altera-opensource/intel-socfpga-hwlib/blob/master/armv7a/hwlib/include/alt_sdmmc.h


For e.g usage for (line 1589):

ALT_STATUS_CODE alt_sdmmc_read(ALT_SDMMC_CARD_INFO_t *card_info, void *dest, void *src, const size_t size);

ALT_STATUS_CODE alt_sdmmc_write(ALT_SDMMC_CARD_INFO_t *card_info, void *dest, void *src, const size_t size);


I am not familiar with these functions, but you may try it, other than that I hope I have provided enough help on this.


  • CAlex's avatar
    CAlex
    Icon for Contributor rankContributor
    2 years ago

    Hi,

    Yes, Im working on that function, but the function is to read/write from the HPS,

    now my problem is how to read the sdcard from host computer.(assume that I already wrote the data into a sd card).

    Do you have any ideas?

    Reguards.