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STM32F4 Standard Peripheral bibliotheek
1.0
ST Microelectronics bibliotheek documentatie voor de STM32F4 Standard Peripheral Library
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Half-duplex mode function. More...
Functions | |
| void | USART_HalfDuplexCmd (USART_TypeDef *USARTx, FunctionalState NewState) |
| Enables or disables the USART's Half Duplex communication. More... | |
Half-duplex mode function.
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Half-duplex mode function
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This subsection provides a set of functions allowing to manage the USART
Half-duplex communication.
The USART can be configured to follow a single-wire half-duplex protocol where
the TX and RX lines are internally connected.
USART Half duplex communication is possible through the following procedure:
1. Program the Baud rate, Word length, Stop bits, Parity, Mode transmitter
or Mode receiver and hardware flow control values using the USART_Init()
function.
2. Configures the USART address using the USART_SetAddress() function.
3. Enable the USART using the USART_Cmd() function.
4. Enable the half duplex mode using USART_HalfDuplexCmd() function.
@note The RX pin is no longer used
@note In Half-duplex mode the following bits must be kept cleared:
- LINEN and CLKEN bits in the USART_CR2 register.
- SCEN and IREN bits in the USART_CR3 register. | void USART_HalfDuplexCmd | ( | USART_TypeDef * | USARTx, |
| FunctionalState | NewState | ||
| ) |
Enables or disables the USART's Half Duplex communication.
| USARTx,: | where x can be 1, 2, 3, 4, 5 or 6 to select the USART or UART peripheral. |
| NewState,: | new state of the USART Communication. This parameter can be: ENABLE or DISABLE. |
| None |