PM0237 datasheet(37/88 Pages) STMICROELECTRONICS

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PM0237

BlueNRG, BlueNRG-MS stacks architecture and ACI

When using another external microcontroller these files should be ported/adapted for

addressing the ACI SPI communication.

In order to proper setup the ACI SPI interface, user is only requested to perform the

following steps at initialization time, on main() function:

Init SPI interface by calling the following API:

SdkEvalSpiInit(SPI_MODE_EXTI);

Reset the BlueNRG module by calling the following API:

BlueNRG_RST();

The user is also requested to place HCI_Isr() within the SPI_IRQ_IRQHandler() handler on

file stm32l1xx_it.c: this allows BlueNRG, BlueNRG-MS device to use the SPI IRQ pin to

notify the external microcontroller (SPI master) when it has data to be read.

Table 29. ACI Interface resources files

File

Description

Location

Notes

SDK_EVAL_SPI_Driver.[ch

]

Main APIs

handling SPI

communicatio

n with

BlueNRG,

BlueNRG-MS

device

platform\STM32L1XX\Libraries\SDK_Eval_STM

32L\src

These APIs are

mapped to the

specific

microcontroller low

level drivers

handling the SPI

peripheral

(stm32l1xx_spi.c)

hal.[ch]

Other APIs

handling

communicatio

n with

BlueNRG,

BlueNRG-MS

device

platform\STM32L1XX

clock.[ch]

SPI timer

APIs

platform\STM32L1XX

It provides the low

level APIs handling

the SPI timeouts

stm32l1xx_it.c

Main Interrupt

Service

Routines

It is defined within the specific user application

folder

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