Application Bootloader Interface#

halAppBootloaderInit#

uint8_t halAppBootloaderInit (void )

Call this function as part of your application initialization to ensure the storage mechanism is ready to use.

Note: some earlier drivers may assert instead of returning an error if initialization fails.

Returns

• EEPROM_SUCCESS or EEPROM_ERR_INVALID_CHIP

halAppBootloaderInfo#

const HalEepromInformationType * halAppBootloaderInfo (void )

Call this function to get information about the attached storage device and its capabilities.

Returns

• A pointer to a HalEepromInformationType data structure, or NULL if the driver does not support this API

halAppBootloaderShutdown#

void halAppBootloaderShutdown (void )

Call this function when you are done accessing the storage mechanism to ensure that it is returned to its lowest power state.

halAppBootloaderImageIsValidReset#

void halAppBootloaderImageIsValidReset (void )

Call this function once before checking for a valid image to reset the call flag.

halAppBootloaderImageIsValid#

uint16_t halAppBootloaderImageIsValid (void )

Reads the app image out of storage, calculates the total file CRC to verify the image is intact.

Caller should loop calling this function while it returns BL_IMAGE_IS_VALID_CONTINUE to get final result. This allows caller to service system needs during validation.

Call halAppBootloaderImageIsValidReset() before calling halAppBootloaderImageIsValid() to reset the call flag.

Here is an example application call:

halAppBootloaderImageIsValidReset();
while ( (pages = halAppBootloaderImageIsValid() ) == BL_IMAGE_IS_VALID_CONTINUE) {
  // make app specific calls here, if any
  emberTick();
}

Returns

• One of the following:

  • Number of pages in a valid image

  • 0 for an invalid image

  • BL_IMAGE_IS_VALID_CONTINUE (-1) to continue to iterate for the final result.

halAppBootloaderInstallNewImage#

EmberStatus halAppBootloaderInstallNewImage (void )

Invokes the bootloader to install the application in storage.

This function resets the device to start the bootloader code and does not return!

Returns

• This function does not return!

halAppBootloaderWriteRawStorage#

uint8_t halAppBootloaderWriteRawStorage (uint32_t address, const uint8_t * data, uint16_t len)

Writes data to the specified raw storage address and length without being restricted to any page size Note: Not all storage implementations support accesses that are not page aligned, refer to the HalEepromInformationType structure for more information.

Note: Some storage devices require contents to be erased before new data can be written, and will return an EEPROM_ERR_ERASE_REQUIRED error if write is called on a location that is not already erased. Refer to the HalEepromInformationType structure to see if the attached storage device requires erasing.

Returns

• EEPROM_SUCCESS or EEPROM_ERR.

halAppBootloaderReadRawStorage#

uint8_t halAppBootloaderReadRawStorage (uint32_t address, uint8_t * data, uint16_t len)

Reads data from the specified raw storage address and length without being restricted to any page size Note: Not all storage implementations support accesses that are not page aligned, refer to the HalEepromInformationType structure for more information.

Returns

• EEPROM_SUCCESS or EEPROM_ERR.

halAppBootloaderEraseRawStorage#

uint8_t halAppBootloaderEraseRawStorage (uint32_t address, uint32_t len)

Erases the specified region of the storage device.

Note: Most devices require the specified region to be page aligned, and will return an error if an unaligned region is specified. Note: Many devices take an extremely long time to perform an erase operation. When erasing a large region, it may be preferable to make multiple calls to this API so that other application functionality can be performed while the erase is in progress. The halAppBootloaderStorageBusy() API may be used to determine when the last erase operation has completed. Erase timing information can be found in the HalEepromInformationType structure.

Returns

• EEPROM_SUCCESS or EEPROM_ERR.

halAppBootloaderStorageBusy#

bool halAppBootloaderStorageBusy (void )

Determine if the attached storage device is still busy performing the last operation, such as a write or an erase.

Returns

• true if still busy or false if not.

halAppBootloaderReadDownloadSpace#

uint8_t halAppBootloaderReadDownloadSpace (uint16_t pageToBeRead, uint8_t * destRamBuffer)

Converts pageToBeRead to an address and the calls storage read function.

Note: This function is deprecated. It has been replaced by halAppBootloaderReadRawStorage()

Returns

• EEPROM_SUCCESS or EEPROM_ERR.

halAppBootloaderWriteDownloadSpace#

uint8_t halAppBootloaderWriteDownloadSpace (uint16_t pageToBeWritten, uint8_t * RamPtr)

Converts pageToBeWritten to an address and calls the storage write function.

Note: This function is deprecated. It has been replaced by halAppBootloaderWriteRawStorage()

Returns

• EEPROM_SUCCESS or EEPROM_ERR

halAppBootloaderGetImageData#

uint8_t halAppBootloaderGetImageData (uint32_t * timestamp, uint8_t * userData)

Read the application image data from storage.

Returns

• EEPROM_SUCCESS or EEPROM_ERR

halAppBootloaderGetVersion#

uint16_t halAppBootloaderGetVersion (void )

Returns the application bootloader version.

Returns

• version of application bootloader.

halAppBootloaderGetRecoveryVersion#

uint16_t halAppBootloaderGetRecoveryVersion (void )

Returns the recovery image version.

Returns

• version of the recovery image.

halAppBootloaderSupportsIbr#

bool halAppBootloaderSupportsIbr (void )

Return a value indicating whether the app bootloader supports IBRs.

Returns

• true if the app bootloader supports IBRs, false otherwise.

BOOTLOADER_SEGMENT_SIZE_LOG2#

#define BOOTLOADER_SEGMENT_SIZE_LOG2

6

This is the working unit of data for the app bootloader.

We want it as big as possible, but it must be a factor of the NVM page size and fit into a single Zigbee packet. We choose 2^6 = 64 bytes.

BOOTLOADER_SEGMENT_SIZE#

#define BOOTLOADER_SEGMENT_SIZE

(1 << BOOTLOADER_SEGMENT_SIZE_LOG2)

This is the working unit of data for the app bootloader.

We want it as big as possible, but it must be a factor of the NVM page size and fit into a single Zigbee packet. We choose 2^6 = 64 bytes.

BL_IMAGE_IS_VALID_CONTINUE#

#define BL_IMAGE_IS_VALID_CONTINUE

((uint16_t)0xFFFF)

Define a numerical value for checking image validity when calling the image interface functions.