4 Replies Latest reply on Jul 7, 2020 8:13 PM by JiZh_4619191

    How much memory capacity can be used in CYW20719?

    JiZh_4619191

      Hi,

      "CYW20719 datasheet" says there is a 448KB-RAM in the chip.

       

      I used a large array:

      ...

      static uint8_t data[640*480];

      ...

      The program was built and downloaded into CYW20719 normally (WICED-Studio-6.4).

      But CYW920719Q40EVB-01 didn't run.

      WICED-Studio-6.4 outputs:

      --------------------------------------------------------------------------------

      Patch code starts at              0x00270400 (RAM address)

      Patch code ends at                0x0027A518 (RAM address)

      Patch RW/ZI size                  2572 bytes

      Application starts at             0x002155FC (RAM address)

      Application ends at               0x00261414 (RAM address)

       

       

      Patch code size                        41240 bytes

      Application RAM footprint             310808 bytes

                                            ------

      Total RAM footprint                   313380 bytes (306.0kiB)

      --------------------------------------------------------------------------------

       

      If I canceled “static uint8_t data[640*480]”, CYW920719Q40EVB-01 started correctlly.

      WICED-Studio-6.4 outputs:

      --------------------------------------------------------------------------------

      Patch code starts at              0x00270400 (RAM address)

      Patch code ends at                0x0027A518 (RAM address)

      Patch RW/ZI size                  2572 bytes

      Application starts at             0x002155FC (RAM address)

      Application ends at               0x0021639C (RAM address)

       

       

      Patch code size                        41240 bytes

      Application RAM footprint               3488 bytes

                                            ------

      Total RAM footprint                     6060 bytes (5.9kiB)

      --------------------------------------------------------------------------------

       

       

      Best regards.