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Hello all,
I have a matrix with float values which I will be saving in a file from Matlab. I have to copy this file to SD Card and read these values using NIOS 2 while running my program. What is the best method to do this? Should I simply store the values using fprintf in Matlab? Will I be able to read these values using fscanf in NIOS? I am using the FAT file functions from the SD Card Audio Demo program but I think those functions read one byte at time. It will be difficult to re-format my data after reading because my values will be stored as float. Any ideas on how I can implement this? ThanksLink Copied
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Solved the problem myself using fwrite(fid,A,'float32'); in Matlab and using a union of char[4] and float in NIOS, thanks to stackoverflow.com
union { char chars[4]; float f; } u; Read 4 bytes in u.char and use u.f, it will be exactly what's needed.- Mark as New
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can u send me copies of your NIOS coding.. just for references for my project
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--- Quote Start --- Solved the problem myself using fwrite(fid,A,'float32'); in Matlab and using a union of char[4] and float in NIOS, thanks to stackoverflow.com union { char chars[4]; float f; } u; Read 4 bytes in u.char and use u.f, it will be exactly what's needed. --- Quote End --- If the endianess stored in the file by Matlab is the same as NIOS II endianess (it probably it is), you don't need the char[4] array, you can just read and write 4 bytes to and from the address of the float. BillA

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