Texas Instruments C2000 - CLA Task Programming; CLA C Language Implementation and Restrictions

Control Law Accelerator (CLA)
10 - 10 C2000 Microcontroller Workshop - Control Law Accelerator
CLA Task Programming
CLA Task Programming
 Can be written in C or assembly code
 Assembly code will give best performance
for time-critical tasks
 Writing in assembly may not be so bad!
 CLA programs in floating point
 Often not that much code in a task
 Commonly, the user will use assembly for
critical tasks, and C for non-critical tasks
CLA C Language Implementation and Restrictions
CLA C Language Implementation
 Supports C only (no C++ or GCC extension support)
 Different data type sizes than C28x CPU

No support for 64-bit integer or 64-bit floating point
 CLA architecture is designed for 32-bit data types
 16-bit computations incur overhead for sign-extension
 Primarily used for reading and writing to 16-bit
peripheral registers
TYPE
CPU
CLA
char, short
16 bit
16 bit
int
16 bit
32 bit
long
32 bit
32 bit
long long
64 bit
32 bit
float, double
32 bit
32
bit
long double
64 bit
32 bit
pointers
32 bit
16 bit