AN4486 datasheet(16/29 Pages) STMICROELECTRONICS

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Running the OTA bootloader GUI & BlueNRG SW

package demo applications

AN4486

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DocID026293 Rev 2

Table 8: BLE_Chat IAR workspaces with OTA bootloader capabilities

BLE_Chat application IAR workspace

Description

Server_LowerApp_OTA

Server configuration including the OTA

bootloader service with “Lower Application”

memory layout (refer to Figure 3: "BLE OTA

service bootloader Flash layout" and Section

2.2.2: "BLE application with BLE OTA service"

and Section 2.2.3: "New BLE application")

Server_HigherApp_OTA

Server configuration including the OTA

bootloader service with “Higher Application”

memory layout (refer to Figure 3: "BLE OTA

service bootloader Flash layout" and Section

2.2.2: "BLE application with BLE OTA service"

and Section 2.2.3: "New BLE application")

Server_OTA_Basic

Server configuration using the OTA Service

Manager (refer to Figure 4: "BLE OTA Service

Manager Flash layout" and and Section 2.3.2:

"OTA Service Manager" and Section 2.3.3:

"New BLE application")

Note: The Sensor Demo application is only supported on the BlueNRG, BlueNRG-MS

development platforms.

4.1

BLE application built to use the OTA bootloader service

The following is a step-by-step description of how to run the BlueNRG GUI OTA bootloader

using the Sensor Demo applications built with OTA service support and two development

platforms:

Plug two development platforms into the USB connectors on a PC.

Use the BlueNRG GUI to program one of the two platforms kits to be used as OTA

bootloader slave. This requires plugging the board into the USB connector on the PC

running the GUI, then pressing the platform reset button while keeping the BUTTON_1

pressed in order to start the DFU bootloader (LED_D2 should be blinking at this point).

From Tools->Flash Motherboard FW, select the Reset Manager hex prebuilt

image (STM32L\Project\OTA_prebuilt_images\ DFU_ResetManager.hex) to

upload the Reset Manager on board (hex format implicitly takes into account

the proper application base address which, for the case of the application, will

be 0x8003000).

The same actions, starting from DFU bootloader activation, must be taken to

upload the initial OTA bootloader application on the board

(STM32L\Project\OTA_prebuilt_images\

BlueNRG_DFU_OTA_Lower_SensorDemo.hex for a BlueNRG device or

BlueNRG-MS_DFU_OTA_Lower_SensorDemo.hex for a BlueNRG-MS

device); (hex format implicitly takes into account the proper application base

address which, for the case of the application, will be 0x8003800).

After Reset Manager loading, a reset while keeping BUTTON_2 pressed

needs to be performed in order to erase obsolete data from the OTA

bootloader's EEPROM and guide proper Reset Manager behavior at first

startup (5 seconds LED_D1 turned on signals successful run of the process).

(Optional) Get a “BlueNRG app for smartphones (IoS or Android)” to discover,

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