Overview of embedded system development.

1. Memory
2. Storage
3. Power
4. Processing power

On ARM processors pass in 4 or less parameters to functions, they will be put in registers and save stack space!

• Smaller data types are better
• use <stding.h>
• Use unit8_t not char, etc. More portable.
• Some processors short == int. Don't assume bit size

IEEE754 standard

• float 32 bits, 6 decimal places
• double 64 bits, 15 decimal places
• long double 80 bits, 19 decimal places

FPU - Floating point unit Does not take extra power Takes less procesisng power Make sure you need floats More memory needed when switching thread contents

Look at the *.map file at the end to see program memory usage ZI = Zero initialized data RW Data - read/write data

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