Hi, > I have a GRC in which I am turning USRP stream to vectors of 1024 length. > Then I have a DSP block (Block 1) that uses these blocks and gives an > output of length 1024. > > * Then, I want to accumulate 10 of these 1024 length blocks. > * After 10 of these blocks accumulated, I will give these 10*1024 length > block to another DSP block(Block 2). > > After I used this 10*1024 block, I don't want this block to be completely > erased, but I want that it should be updated with the new 1*1024 block > coming from Block 1. Then I will use this updated 10*1024 block in Block 2.
This functionality is available as `history` function inside of a block. If you write your own blocks you can call `set_history(9)` and then will have 9+1 blocks in your input buffer. After you consumed this block in the next call you again get 9+1 with the "newest" block in the history being your previous block. Basically you will have a shift register saving 9 previous blocks and giving them to you. 10x1024 might be more than the default buffer size will allow you, so you also should increase that. Cheers Andrej -- Andrej Rode GPG Key: 750B CBBB 4A75 811A 4D5F 03ED 5C23 7FB8 9A7D A2AA
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