Exported Functions

Functions
void	hci_tl_lowlevel_init (void)
	Register hci_tl_interface IO bus services and the IRQ handlers. This function must be implemented by the user at the application level. E.g., in the following, it is provided an implementation example in the case of the SPI: More...
void	hci_tl_lowlevel_isr (void)
	HCI Transport Layer Low Level Interrupt Service Routine. The Interrupt Service Routine must be called when the BlueNRG-MS reports a packet received or an event to the host through the BlueNRG-MS interrupt line. E.g. in case of data travelling over SPI. More...

Detailed Description

Function Documentation

hci_tl_lowlevel_init()

void hci_tl_lowlevel_init

(

void

)

Register hci_tl_interface IO bus services and the IRQ handlers. This function must be implemented by the user at the application level. E.g., in the following, it is provided an implementation example in the case of the SPI:

void hci_tl_lowlevel_init(void)
{
 tHciIO fops;  

 //Register IO bus services 
  fops.Init    = HCI_TL_SPI_Init;
  fops.DeInit  = HCI_TL_SPI_DeInit;
  fops.Send    = HCI_TL_SPI_Send;
  fops.Receive = HCI_TL_SPI_Receive;
  fops.Reset   = HCI_TL_SPI_Reset;
  fops.GetTick = BSP_GetTick;

 hci_register_io_bus (&fops);

 //Register event irq handler 
  HAL_EXTI_GetHandle(&hexti0, EXTI_LINE_0);
  HAL_EXTI_RegisterCallback(&hexti0, HAL_EXTI_COMMON_CB_ID, hci_tl_lowlevel_isr);
  HAL_NVIC_SetPriority(EXTI0_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI0_IRQn);
}

Parameters

None

Return values

None

hci_tl_lowlevel_isr()

void hci_tl_lowlevel_isr

(

void

)

HCI Transport Layer Low Level Interrupt Service Routine. The Interrupt Service Routine must be called when the BlueNRG-MS reports a packet received or an event to the host through the BlueNRG-MS interrupt line. E.g. in case of data travelling over SPI.

void hci_tl_lowlevel_isr(void)
{
 while(IsDataAvailable())
  {        
 hci_notify_asynch_evt(NULL);
  }
}

where IsDataAvailable() checks the status of the SPI external interrupt pin

static int32_t IsDataAvailable(void)
{
 return (HAL_GPIO_ReadPin(HCI_TL_SPI_EXTI_PORT, HCI_TL_SPI_EXTI_PIN) == GPIO_PIN_SET);
} 

Parameters

None

Return values

None