FWLib V1.0 to V2.0 migration steps

AN2776

14/20

} USART_InitTypeDef;

In FWLib V2.0, this driver was updated to support the new UART4 and UART5 peripherals

present in High-density devices. UART4 and UART5 do not support synchronous operations

like Smartcard mode and SPI-like communication.

USART_Init

was split up into two functions:

USART_Init

It is used for basic and asynchronous parameter configuration of USART1, USART2,

USART3, UART4 and UART5:

USART_Init(USART_TypeDef* USARTx, USART_InitTypeDef* USART_InitStruct)

The USART_InitTypeDef structure definition is modified as follows:

typedef struct

{

u32 USART_BaudRate;

u16 USART_WordLength;

u16 USART_StopBits;

u16 USART_Parity;

u16 USART_Mode;

u16 USART_HardwareFlowControl;

} USART_InitTypeDef;

As a result, in code based on FWLib V1.0, if the application does not use the synchronous

parameters, update the code as given in the following example:

USART configuration based on FWLib V1.0:

USART_InitStructure.USART_BaudRate = 115200;

USART_InitStructure.USART_WordLength = USART_WordLength_8b;

USART_InitStructure.USART_StopBits = USART_StopBits_1;

USART_InitStructure.USART_Parity = USART_Parity_No ;

USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

USART_InitStructure.USART_Clock = USART_Clock_Disable;

USART_InitStructure.USART_CPOL = USART_CPOL_Low;

USART_InitStructure.USART_CPHA = USART_CPHA_2Edge;

USART_InitStructure.USART_LastBit = USART_LastBit_Disable;

/* Configure USART1 */

USART_Init(USART1, &USART_InitStructure);

In FWLib V2.0, the USART_Clock, USART_CPOL, USART_CPHA and USART_LastBit

structure members were removed:

USART_InitStructure.USART_BaudRate = 115200;

USART_InitStructure.USART_WordLength = USART_WordLength_8b;

USART_InitStructure.USART_StopBits = USART_StopBits_1;

USART_InitStructure.USART_Parity = USART_Parity_No ;

USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

/* Configure USART1 basic and asynchronous paramters */

USART_Init(USART1, &USART_InitStructure);