SLAA513B December   2011  – February 2022 MSP430G2112 , MSP430G2112 , MSP430G2152 , MSP430G2152 , MSP430G2212 , MSP430G2212 , MSP430G2252 , MSP430G2252 , MSP430G2312 , MSP430G2312 , MSP430G2352 , MSP430G2352 , MSP430G2412 , MSP430G2412 , MSP430G2452 , MSP430G2452

 

  1.   Trademarks
  2. 1Typical Single Time Base Method
  3. 2Multiple Time Base Method
  4. 3Implementing the Multiple Time Base Method in a Custom Application
    1. 3.1 Timer Clock Source Selection
    2. 3.2 Period and Frequency Calculation
    3. 3.3 Duty Cycle Calculation
  5. 4Example Code
    1. 4.1 Method
      1. 4.1.1 ISR for Multiple Frequencies
      2. 4.1.2 ISR for Multiple Frequencies and Duty Cycles (PWM)
    2. 4.2 Included Code Examples
  6. 5Limitations of the Multiple Time Base Method
    1. 5.1 ISR Overhead
    2. 5.2 Maximum Output Frequency vs Number of Signals
    3. 5.3 Power Consumption
  7. 6References
  8. 7Revision History

4 Example Code

The zip file at https://www.ti.com/lit/zip/slaa513 contains example code for implementing multiple time bases on a Timer_A module on an MSP430G2452 device and a Timer_B module on an MSP430F5529 device. Variations of the same code were used in testing to produce the data found in Section 5.