SPMA078 March   2021 TM4C1290NCPDT , TM4C1290NCPDT , TM4C1290NCZAD , TM4C1290NCZAD , TM4C1292NCPDT , TM4C1292NCPDT , TM4C1292NCZAD , TM4C1292NCZAD , TM4C1294KCPDT , TM4C1294KCPDT , TM4C1294NCPDT , TM4C1294NCPDT , TM4C1294NCZAD , TM4C1294NCZAD , TM4C1297NCZAD , TM4C1297NCZAD , TM4C1299KCZAD , TM4C1299KCZAD , TM4C1299NCZAD , TM4C1299NCZAD , TM4C129CNCPDT , TM4C129CNCPDT , TM4C129CNCZAD , TM4C129CNCZAD , TM4C129DNCPDT , TM4C129DNCPDT , TM4C129DNCZAD , TM4C129DNCZAD , TM4C129EKCPDT , TM4C129EKCPDT , TM4C129ENCPDT , TM4C129ENCPDT , TM4C129ENCZAD , TM4C129ENCZAD , TM4C129LNCZAD , TM4C129LNCZAD , TM4C129XKCZAD , TM4C129XKCZAD , TM4C129XNCZAD , TM4C129XNCZAD

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Definitions
  3. 2Theory of Operation
    1. 2.1 Normal Use
    2. 2.2 Normal Endurance
    3. 2.3 High Endurance Use
    4. 2.4 Data Integrity
    5. 2.5 CRC Module
  4. 3Software Description
    1. 3.1 Environment
    2. 3.2 Files
    3. 3.3 Functions
      1. 3.3.1  FeeInit
      2. 3.3.2  FeeCheckDatasetValid
      3. 3.3.3  FeeFormat
      4. 3.3.4  FeeRead
      5. 3.3.5  FeeWrite
      6. 3.3.6  FeeGetStatus
      7. 3.3.7  FeeGetJobResults
      8. 3.3.8  FeeGetDatasetCounter
      9. 3.3.9  FeeGetVersionInformation
      10. 3.3.10 FeeMainFunction
  5. 4Execution Time
    1. 4.1 Read Time
    2. 4.2 Write Time
      1. 4.2.1 Write Time When no Erase is Required
      2. 4.2.2 Write Time when Sector Copy is Required
      3. 4.2.3 Write Time when Sector Copy is Required and Copy Sector is Full
      4. 4.2.4 Write Time with Interrupts
  6. 5Examples
    1. 5.1 Polling Fee Example
    2. 5.2 Interrupt Fee Example
    3. 5.3 Import, Program and Run Examples
      1. 5.3.1 To Import the Project into CCS, First Select "File" → "Import"
      2. 5.3.2 Select "CCS Projects" to Import the Example, Then Click "Next"
      3. 5.3.3 Provide the Path to Either the Unzipped Project by Selecting the First Radio Button or Import the Sip File Directly by Selecting the Second Radio Button. Click the "Copy Projects Into Workspace".
      4. 5.3.4 After the Project Path is Provided, it Will Show up as a Discovered Project. Click the "Finish" Button to Complete the Import.
      5. 5.3.5 Program the Example into the Flash Memory and Start Executing the Example
      6. 5.3.6 Configure the Serial Terminal Window
      7. 5.3.7 Run the Example
  7. 6Summary

Polling Fee Example

This example uses the FEE driver to maintain two counters. Upon reset, the count values are checked and the values are output on the virtual serial port attached to UART0. Then LEDs D1 and D2 are alternately illuminated while the status of user switches SW1 and SW2 are read. While SW1 is depressed, the counter in dataset zero will be incremented and the new value will be output on the serial port. Likewise, when SW2 is depressed, the counter in dataset one will be incremented and the new value will be output on the serial port.

In each dataset the counters are implemented with four copies of the count. Two copies in clear form, and two copies stored in one’s complement. Each time a dataset is read, the CRC is checked and all four copies are checked to verify they contain the same count. Any errors are reported out the serial port.