AN2776

FWLib V1.0 to V2.0 migration steps

13/20

2.2.4

DMA

In FWLib V1.0, the stm32f10x_dma.c/stm32f10x_dma.h driver is used to cover the

functionality of the DMA controller and its seven channels. The function format in this driver

is as follows:

DMA_FunctionName(DMA_Channelx, param1, param2,...)

e.g.: DMA_ITConfig(DMA_Channel_TypeDef* DMA_Channelx, u32 DMA_IT, FunctionalState

NewState)

In FWLib V2.0, this driver was updated to support the new DMA2 controller and the five

associated channels present in High-density devices. The function names are unchanged

compared to FWLib V1.0, only the passed parameter has been updated to cover the DMA1

(DMA in Medium-density devices) and DMA2 controllers. This gives the following function

format:

DMA_FunctionName(DMA

e.g.: DMA_ITConfig(DMA_Channel_TypeDef* DMA

NewState)

As a result, in code based on FWLib V1.0, only the DMA_Channel_TypeDef parameter

name needs updating.

Example: Typical code for DMA enable and interrupt configuration based on FWLib V1.0:

DMA_Cmd(DMA_Channel5, ENABLE)

DMA_ITConfig(DMA_Channel6, DMA_IT_TC, ENABLE)

Using FWLib V2.0, this code is:

DMA_Cmd(DMA

DMA_ITConfig(DMA

Example: Typical code to check whether DMA Channel6 flag is set, based on FWLib V1.0:

/* Test if DMA Channel6 transfer complete flag is set or not */

FlagStatus Status;

Status = DMA_GetFlagStatus(DMA_FLAG_TC6);

Using FWLib V2.0, this code is:

/* Test if DMA1 Channel6 transfer complete flag is set or not */

FlagStatus Status;

Status = DMA_GetFlagStatus(DMA1_FLAG_TC6);

2.2.5

USART

In FWLib V1.0, the stm32f10x_usart.c/stm32f10x_usart.h driver is used to cover

the functionality of the USART1, USART2 and USART3 peripherals. In this driver, the

USART is configured through the USART_Init function, which takes the

USART_InitTypeDef structure as a parameter. It is the structure that contains the

configuration information:

USART_Init(USART_TypeDef* USARTx, USART_InitTypeDef* USART_InitStruct)

The USART_InitTypeDef structure is defined as shown below:

typedef struct

{

u32 USART_BaudRate;

u16 USART_WordLength;

u16 USART_StopBits;

u16 USART_Parity;

u16 USART_HardwareFlowControl;

u16 USART_Mode;

u16 USART_Clock;

u16 USART_CPOL;

u16 USART_CPHA;

u16 USART_LastBit;