OTA bootloader service description

AN4486

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for BlueNRG demo lower applications using BLE OTA bootloader service" and Table 3:

"LEDs for BlueNRG demo higher applications using BLE OTA bootloader service".

Table 2: LEDs for BlueNRG demo lower applications using BLE OTA bootloader service

BlueNRG, BlueNRG-MS development

platforms (lower application with OTA

bootloader service)

BlueNRG, BlueNRG-MS USB dongles (lower

application with OTA bootloader service)

DL1 (yellow) is always blinking(1)

D2 (red) is always blinking (1)

DL2 (orange) is ON during OTA upgrade

D3 (orange) is ON during OTA upgrade

Notes:

Table 3: LEDs for BlueNRG demo higher applications using BLE OTA bootloader service

BlueNRG, BlueNRG-MS development

platforms (higher Application with OTA

bootloader service)

BlueNRG, BlueNRG-MS USB dongles

(higher application with OTA bootloader

service)

DL2 (orange) is always blinking (1)

D3 (orange) is always blinking (1)

DL1 (yellow) is ON during OTA upgrade

D2 (red) is ON during OTA upgrade

Notes:

2.2.3

New BLE application

New BLE application can be built for supporting the BLE OTA bootloader service in order to

offer the OTA bootloading capability (beyond its specific BLE application scenario which

involves using other BLE services and related characteristics). Users can follow the same

steps as described on Section 2.2.2: "BLE application with BLE OTA service".

If the BLE application is built to reside on the higher Flash (refer to higher application in

Figure 3: "BLE OTA service bootloader Flash layout"), the HIGHER_APP preprocessor &

linker options must be used. BlueNRG demo applications built with OTA bootloader service

support are tailored for using 0x0800e000 as reference base address for higher

Application. The related vector table base offset 0xe000 is defined, within file btl.h, as

follows:

VECTOR_TABLE_BASE_DFU_OFFSET +

VECTOR_TABLE_BASE_HIGHER_APP_OFFSET

where:

VECTOR_TABLE_BASE_DFU_OFFSET = 0x3000 (DFU size).

VECTOR_TABLE_BASE_HIGHER_APP_OFFSET = 0xB000 (User defined location).

The user can customize it by modifying the linker file and base address

VECTOR_TABLE_BASE_HIGHER_APP_OFFSET on file btl.h.

Note: If HIGHER_APP preprocessor & linker options are not used, the BLE application is

built, by default, for residing at default base address: 0x08003800.

The related vector table base offset 0x3800 is defined, within file btl.h, as follows:

VECTOR_TABLE_BASE_DFU_OFFSET +

VECTOR_TABLE_BASE_RESET_MANAGER_OFFSET