Insufficient DSP memory space

Jacktang

Insufficient DSP memory space [Copy link]

Because the RAM in DSP is mainly used to store data, but when using FFT algorithm, wavelet algorithm, etc., the data volume will be too large and the internal RAM space is not enough. There are two solutions to this problem: 1. If the data is of const type, it can be defined in the flash; 2. Expand the SRAM. How to use the external SRAM? 1) Define a data space in the CMD file, such as: Zone7Data: origin = 0x25ffff, length = 0x02000 Zone7DataFile:> Zone7Data, PAGE = 1 2) Compile the larger array into the segment defined in CMD #pragma DATA_SECTION(s,"Zone7DataFile "); unsigned int s[1024];