PM0237 datasheet(36/88 Pages) STMICROELECTRONICS

36 / 88 page

BlueNRG, BlueNRG-MS stacks architecture and ACI

PM0237

36/88

DocID027104 Rev 2

2.2

ACI Interface resources

In order to communicate with BlueNRG or BlueNRG-MS network processor through the ACI

interface framework, the external microcontroller requires only the following main resources:

SPI interface

Platform-dependent code to write/read to/from SPI

A timer to handle SPI timeouts

The BlueNRG, BlueNRG-MS SPI interface is handled through the functions defined on files

SDK_EVAL_SPI_Driver.[ch] and hal.[ch]. These APIs allows the external microcontroller to

get access to BlueNRG or BlueNRG-MS device. The BlueNRG, BlueNRG-MS devices use

the SPI IRQ pin to notify the external microcontroller (SPI master) when it has data to be

read: this is handled through the HCI_Isr() placed within the SPI_IRQ_IRQHandler()

handler on stm32l1xx_it.c. The SPI_IRQ_IRQHandler() is associated to the proper EXTI irq

handler, based on the selected platform GPIO line for the BlueNRG, BlueNRG-MS SPI

interrupt line.

The BlueNRG, BlueNRG-MS kits platforms are targeting the STM32L1xx microcontroller

and the related libraries are used in order to get access to the device peripheral. The

STM32L1xx microcontroller libraries are provided within the

platform\STM32L1XX\Libraries\STM32L1xx_StdPeriph_Driver folder.

The files stm32l1xx_spi.[ch] are used for handling the low level platform-dependent code to

write/read to/from SPI.

bluenrg_l2cap

_aci.h

Header file with L2CAP commands for

BlueNRG FW stack

“”

It is included by

bluenrg_aci.h

bluenrg_gatt_a

ci.h

Header file with GATT commands for

BlueNRG FW stack

“”

It is included by

bluenrg_aci.h

bluenrg_gap_a

ci.h

Header file with GAP commands for

BlueNRG FW stack

“”

It is included by

bluenrg_aci.h

bluenrg_updat

er_aci.h

Header file with updater commands for

BlueNRG FW stack

“”

It is included by

bluenrg_aci.h

Table 28. ACI Interface (continued)

File

Description

Location

Notes

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