DocID022544 Rev 3

19/23

AN4018

Example to configure the communication protocol

Appendix C

Example to configure the communication

protocol

C.1

Configure the STM32Fx family serial layer

Follow the STM32Fx family USART configuration used inside the serial layer to

communicate with a PLM device:

Usart ' USART3

USART_RX_GPIO ' GPIO_Pin_11_PORT_B

USART_TX_GPIO ' GPIO_Pin_10_PORT_B

The part of the code to modify is:

/*-----------------------------------------------------------*/

/* Serial Define */

#define USART

USART3

#define USART_PORT

GPIOB

#define USART_TX

GPIO_Pin_10

#define USART_RX

GPIO_Pin_11

#define USART_TR

GPIO_Pin_9

#define USART_IRQ

USART3_IRQn

#define RCC_APBPeriph_USART RCC_APB1Periph_USART3

#define RCC_APBPeriph_USART_ClockCmd(Periph_USART,value)

RCC_APB1PeriphClockCmd(Periph_USART,value)

#define RCC_APBPeriph_GPIO RCC_APB2Periph_GPIOB

#define RCC_APBPeriph_GPIO_ClockCmd(Periph_GPIO,value)

RCC_APB2PeriphClockCmd(Periph_GPIO,value)

/*------------------------------------------------------------*/

The names "RCC_APB2Periph_GPIOB", "GPIO_Pin_x", "USART3" ecc.

The names are defined in the STM32F10x_StdPeriph_Driver.

Furthermore, it is necessary to call the function “vUARTInterruptHandler()” defined in

serial.c in the appropriate InterruptServiceRoutine. The following example shows the ISR of

USART3 in the Interrupt file of the STM32Fx family library:

Example:

void PPP_IRQHandler(void)

{

}

void UART4_IRQHandler(void)

{

}

void USART3_IRQHandler(void)

{

vUARTInterruptHandler();

}

void USART1_IRQHandler(void)