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System Software Design. EX500R Digital Instrumentation Display (Ninja DIDy ). Dane Kim May 4 th , 2009 EET 475, WWU. General System Design. MCU: Cypress PSoC CY8C29446 8-bit Bus Frequency: 24 MHz Memory Requirements: 5K ROM <1K RAM Kernel: Timeslice. Tasks, ISRs and CPU Load.
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System Software Design EX500R Digital Instrumentation Display (Ninja DIDy) Dane Kim May 4th, 2009 EET 475, WWU
General System Design • MCU: Cypress PSoC CY8C29446 • 8-bit • Bus Frequency: 24 MHz • Memory Requirements: • 5K ROM • <1K RAM • Kernel: Timeslice
Tasks, ISRs and CPU Load Lmax = (10s) + (150 s) + (50 s) + (10 s) + (8.3 s) + (8.3 s) + (.1 s) = 12.4% (10ms) (50ms) (50ms) (10ms) (30ms) (10ms) (30ms) Lave = 9.07%
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