Martin Johnson / STM32F3-Discovery

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MultiProcessor Communication functions
Functions

MultiProcessor Communication functions
[USART_Private_Functions]

Multi-Processor Communication functions. More...

Functions

void USART_SetAddress (USART_TypeDef *USARTx, uint8_t USART_Address)
 Sets the address of the USART node.
void USART_MuteModeCmd (USART_TypeDef *USARTx, FunctionalState NewState)
 Enables or disables the USART's mute mode.
void USART_MuteModeWakeUpConfig (USART_TypeDef *USARTx, uint32_t USART_WakeUp)
 Selects the USART WakeUp method from mute mode.
void USART_AddressDetectionConfig (USART_TypeDef *USARTx, uint32_t USART_AddressLength)
 Configure the USART Address detection length.

Detailed Description

Multi-Processor Communication functions. 

 ===============================================================================
             ##### Multi-Processor Communication functions #####
 ===============================================================================
    [..] This subsection provides a set of functions allowing to manage the USART
         multiprocessor communication.
    [..] For instance one of the USARTs can be the master, its TX output is
         connected to the RX input of the other USART. The others are slaves,
         their respective TX outputs are logically ANDed together and connected 
         to the RX input of the master. USART multiprocessor communication is 
         possible through the following procedure:
         (#) Program the Baud rate, Word length = 9 bits, Stop bits, Parity, 
             Mode transmitter or Mode receiver and hardware flow control values 
             using the USART_Init() function.
         (#) Configures the USART address using the USART_SetAddress() function.
         (#) Configures the wake up methode (USART_WakeUp_IdleLine or 
             USART_WakeUp_AddressMark) using USART_WakeUpConfig() function only 
             for the slaves.
         (#) Enable the USART using the USART_Cmd() function.
         (#) Enter the USART slaves in mute mode using USART_ReceiverWakeUpCmd() 
             function.
    [..] The USART Slave exit from mute mode when receive the wake up condition.

Function Documentation

void USART_AddressDetectionConfig ( USART_TypeDef *  USARTx,
uint32_t  USART_AddressLength 
)

Configure the USART Address detection length.

Parameters:
USARTx,:Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
USART_AddressLength,:specifies the USART address length detection. This parameter can be one of the following values:

  • USART_AddressLength_4b: 4-bit address length detection
  • USART_AddressLength_7b: 7-bit address length detection
Return values:
None

Definition at line 1054 of file stm32f30x_usart.c.

void USART_MuteModeCmd ( USART_TypeDef *  USARTx,
FunctionalState  NewState 
)

Enables or disables the USART's mute mode.

Parameters:
USARTx,:Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
NewState,:new state of the USART mute mode. This parameter can be: ENABLE or DISABLE.
Return values:
None

Definition at line 1006 of file stm32f30x_usart.c.

void USART_MuteModeWakeUpConfig ( USART_TypeDef *  USARTx,
uint32_t  USART_WakeUp 
)

Selects the USART WakeUp method from mute mode.

Parameters:
USARTx,:Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
USART_WakeUp,:specifies the USART wakeup method. This parameter can be one of the following values:

  • USART_WakeUp_IdleLine: WakeUp by an idle line detection
  • USART_WakeUp_AddressMark: WakeUp by an address mark
Return values:
None

Definition at line 1034 of file stm32f30x_usart.c.

void USART_SetAddress ( USART_TypeDef *  USARTx,
uint8_t  USART_Address 
)

Sets the address of the USART node.

Parameters:
USARTx,:Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
USART_Address,:Indicates the address of the USART node.
Return values:
None

Definition at line 987 of file stm32f30x_usart.c.

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