IrDA mode functions.
More...
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void | USART_IrDAConfig (USART_TypeDef *USARTx, uint32_t USART_IrDAMode) |
| Configures the USART's IrDA interface. More...
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void | USART_IrDACmd (USART_TypeDef *USARTx, FunctionalState NewState) |
| Enables or disables the USART's IrDA interface. More...
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IrDA mode functions.
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##### IrDA mode functions #####
===============================================================================
[..] This subsection provides a set of functions allowing to manage the USART
IrDA communication.
[..] IrDA is a half duplex communication protocol. If the Transmitter is busy,
any data on the IrDA receive line will be ignored by the IrDA decoder
and if the Receiver is busy, data on the TX from the USART to IrDA will
not be encoded by IrDA. While receiving data, transmission should be
avoided as the data to be transmitted could be corrupted.
[..] IrDA communication is possible through the following procedure:
(#) Program the Baud rate, Word length = 8 bits, Stop bits, Parity,
Transmitter/Receiver modes and hardware flow control values using
the USART_Init() function.
(#) Configures the IrDA pulse width by configuring the prescaler using
the USART_SetPrescaler() function.
(#) Configures the IrDA USART_IrDAMode_LowPower or USART_IrDAMode_Normal
mode using the USART_IrDAConfig() function.
(#) Enable the IrDA using the USART_IrDACmd() function.
(#) Enable the USART using the USART_Cmd() function.
[..]
(@) A pulse of width less than two and greater than one PSC period(s) may or
may not be rejected.
(@) The receiver set up time should be managed by software. The IrDA physical
layer specification specifies a minimum of 10 ms delay between
transmission and reception (IrDA is a half duplex protocol).
(@) In IrDA mode, the following bits must be kept cleared:
(+@) LINEN, STOP and CLKEN bits in the USART_CR2 register.
(+@) SCEN and HDSEL bits in the USART_CR3 register.
void USART_IrDACmd |
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USART_TypeDef * |
USARTx, |
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FunctionalState |
NewState |
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) |
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Enables or disables the USART's IrDA interface.
- Parameters
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USARTx,: | where x can be 1 to select the USART peripheral. |
NewState,: | new state of the IrDA mode. This parameter can be: ENABLE or DISABLE. |
- Return values
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void USART_IrDAConfig |
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USART_TypeDef * |
USARTx, |
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uint32_t |
USART_IrDAMode |
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) |
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Configures the USART's IrDA interface.
- Parameters
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USARTx,: | where x can be 1 to select the USART peripheral. |
USART_IrDAMode,: | specifies the IrDA mode. This parameter can be one of the following values:
- USART_IrDAMode_LowPower
- USART_IrDAMode_Normal
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- Return values
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