SPRACA7A October   2017  – September 2022 TMS320F28075 , TMS320F28075-Q1 , TMS320F28374D , TMS320F28374S , TMS320F28375D , TMS320F28375S , TMS320F28375S-Q1 , TMS320F28376D , TMS320F28376S , TMS320F28377D , TMS320F28377D-EP , TMS320F28377D-Q1 , TMS320F28377S , TMS320F28377S-Q1 , TMS320F28379D , TMS320F28379D-Q1 , TMS320F28379S

 

  1.   C2000™ Hardware Built-In Self-Test
  2.   Trademarks
  3. 1Introduction
    1. 1.1 HWBIST Overview
      1. 1.1.1 HWBIST Working In-System
    2. 1.2 HWBIST Failure Response
    3. 1.3 Advantages of Using HWBIST In-System
  4. 2Using HWBIST In-System
    1. 2.1 Fundamental HWBIST Operation
      1. 2.1.1 Initializing the HWBIST Controller
      2. 2.1.2 Executing HWBIST
        1. 2.1.2.1 Executing HWBIST Micro-Run
        2. 2.1.2.2 Executing HWBIST Full-Run
      3. 2.1.3 Error Management
    2. 2.2 Managing HWBIST on Dual-Core Device
      1. 2.2.1 Semaphore Management
      2. 2.2.2 Interprocessor Communications
    3. 2.3 System Considerations When Using HWBIST
      1. 2.3.1 Interrupt Latency
      2. 2.3.2 Power Considerations
      3. 2.3.3 HWBIST Memory Requirements
      4. 2.3.4 Injecting Errors
    4. 2.4 Debugging HWBIST In-System
  5. 3References
  6. 4Revision History

2.1.1 Initializing the HWBIST Controller

Initializing the HWBIST controller is accomplished by calling this library function:

void STL_HWBIST_init(const STL_HWBIST_Coverage coverage);

This function initializes the HWBIST controller for operation. The coverage parameter is an enumerated type STL_HWBIST_Coverage and specifies the coverage to achieve. If on a multi-core device, this function expects the HWBIST semaphore to be claimed already by the CPU trying to execute a run on the HWBIST. This function initializes the HWBIST registers as follows:

  • Number of cycles per micro-run for the first <= 95% coverage and number of cycles per micro-run for the incremental coverage to get to 99% (if supported on that device):
    • Minimizes the time-slice of the micro-run
    • Minimizes the context latency
    • Minimizes the power consumption during the micro-run
  • HWBIST clock configuration
  • Return address is 0x0000, which is the beginning of the RAMM0 block of memory
  • Level of coverage as specified by the input parameter coverage