Initialization and de-initialization functions
[USART Exported Functions]

Initialization and Configuration functions. More...

Detailed Description

Initialization and Configuration functions.

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            ##### Initialization and Configuration functions #####
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    [..]
    This subsection provides a set of functions allowing to initialize the USART
    in asynchronous and in synchronous modes.
      (+) For the asynchronous mode only these parameters can be configured:
        (++) Baud Rate
        (++) Word Length
        (++) Stop Bit
        (++) Parity: If the parity is enabled, then the MSB bit of the data written
             in the data register is transmitted but is changed by the parity bit.
        (++) USART polarity
        (++) USART phase
        (++) USART LastBit
        (++) Receiver/transmitter modes

    [..]
    The HAL_USART_Init() function follows the USART  synchronous configuration
    procedure (details for the procedure are available in reference manual).

Depending on the frame length defined by the M1 and M0 bits (7-bit, 8-bit or 9-bit), the possible USART formats are listed in the following table.

Table 1. USART frame format. +-----------------------------------------------------------------------+ | M1 bit | M0 bit | PCE bit | USART frame | |---------|---------|-----------|---------------------------------------| | 0 | 0 | 0 | | SB | 8 bit data | STB | | |---------|---------|-----------|---------------------------------------| | 0 | 0 | 1 | | SB | 7 bit data | PB | STB | | |---------|---------|-----------|---------------------------------------| | 0 | 1 | 0 | | SB | 9 bit data | STB | | |---------|---------|-----------|---------------------------------------| | 0 | 1 | 1 | | SB | 8 bit data | PB | STB | | |---------|---------|-----------|---------------------------------------| | 1 | 0 | 0 | | SB | 7 bit data | STB | | |---------|---------|-----------|---------------------------------------| | 1 | 0 | 1 | | SB | 6 bit data | PB | STB | | +-----------------------------------------------------------------------+

Function Documentation