Home
3 API
3.3 Safe PLIB
Safe PLIBs are used for setting up and controlling the operation of the peripherals.
3.3.8 SAFE_PLIB_NVMCTRL
Set of safe functions for setting up and controlling the NVMCTRL peripheral.
3.3.8.5 NVMCTRL_RegionUnlock
Unlocks a NVM region.

1 Preface
2 Diagnostic Library for SAM C21
3 API
- 3.1 API Overview
- 3.2 Diagnostic Mechanisms
- 3.3 Safe PLIB
  Safe PLIBs are used for setting up and controlling the operation of the peripherals.
  - 3.3.1 SAFE_PLIB_ADC
    Set of safe functions for setting up and controlling the ADC peripheral.
  - 3.3.2 SAFE_PLIB_CAN
    Set of safe functions for setting up and controlling the CAN peripheral.
  - 3.3.3 SAFE_PLIB_DAC
    Set of safe functions for setting up and controlling the DAC peripheral.
  - 3.3.4 SAFE_PLIB_DIVAS
    Set of safe functions for setting up and controlling the DIVAS peripheral.
  - 3.3.5 SAFE_PLIB_DMAC
    Set of safe functions for setting up and controlling the DMAC peripheral.
  - 3.3.6 SAFE_PLIB_EIC
    Set of safe functions for setting up and controlling the EIC peripheral.
  - 3.3.7 SAFE_PLIB_FREQM
    Set of safe functions for setting up and controlling the FREQM peripheral.
  - 3.3.8 SAFE_PLIB_NVMCTRL
    Set of safe functions for setting up and controlling the NVMCTRL peripheral.
    - 3.3.8.1 NVMCTRL_CallbackRegister
      Sets the pointer to the function (and it's context) to be called when the operation is complete.
    - 3.3.8.2 NVMCTRL_Initialize
      Initialze peripheral instance as per application need.
    - 3.3.8.3 NVMCTRL_IsBusy
      Returns the current status of NVM controller.
    - 3.3.8.4 NVMCTRL_PageWrite
      Writes one page of data to given NVM address.
    - 3.3.8.5 NVMCTRL_RegionUnlock
      Unlocks a NVM region.
    - 3.3.8.6 NVMCTRL_RowErase
      Erases a Row in the NVM
  - 3.3.9 SAFE_PLIB_PAC
    Set of safe functions for setting up and controlling the PAC peripheral.
  - 3.3.10 SAFE_PLIB_RSTC
    Set of safe functions for setting up and controlling the RSTC peripheral.
  - 3.3.11 SAFE_PLIB_RTC
    Set of safe functions for setting up and controlling the RTC peripheral.
  - 3.3.12 SAFE_PLIB_SDADC
    Set of safe functions for setting up and controlling the SDADC peripheral.
  - 3.3.13 SAFE_PLIB_SERCOM_USART
    Set of safe functions for setting up and controlling the USART peripheral.
  - 3.3.14 SAFE_PLIB_TC
    Set of safe functions for setting up and controlling the TC peripheral.
  - 3.3.15 SAFE_PLIB_TCC
    Set of safe functions for setting up and controlling the TCC peripheral.
  - 3.3.16 SAFE_PLIB_WDT
    Set of safe functions for setting up and controlling the WDT peripheral.
4 Appendix - FMEDA to Diagnostic API Mapping
5 Known Issues
6 Revision History
Microchip Information

3.3.8.5 NVMCTRL_RegionUnlock

Unlocks a NVM region.

This function unlocks a region that was locked using the NVMCTRL_RegionLock() function. The address parameter can be any address within the region. Unlocking a region unlocks all pages in the region and makes these pages accessible to write and erase operations.

void 
NVMCTRL_RegionUnlock
( 
    unit32_t address
);

Precondition

Validate if NVM controller is ready to accept new request by calling NVMCTRL_IsBusy();

Parameters

address - Any address in the region to be unlocked

Returns

void