wenkong_junshi/Template/HARDWARE/USART2/modbus.c

#include "modbus.h"
#include "All_define.h"
 volatile eMBSndState eSndState;
 volatile eMBRcvState eRcvState;
void BSP_modbus(u16 band) 
{
	u16 bandvalue = 0;
	if(band == 0x01e0)
	{
		bandvalue = 4800; 
	}
	else if (band == 0x03c0)
	{
		bandvalue = 9600;  
	}
	else if (band == 0x05a0)
	{
		bandvalue = 14400;   
	}
	else if(band == 0x0780)
	{
		bandvalue = 19200; 
	}
	else if (band == 0x0f00)
	{
		bandvalue = 38400;  
	}
	else if (band == 0x15e0)
	{
		bandvalue = 56000;   
	}	
	else 
	{
		return;
	}
	BSP_UART2_Init(bandvalue);
	uint32_t T35_50us = 0;
	if(bandvalue > 9600) bandvalue = 9600;
	//T35_50us = (7UL * 220000UL )/(2UL * bandvalue);
	T35_50us =5* (10UL *1000000UL)/(bandvalue);
	BSP_TIM2_Init(T35_50us);
	eMBRTUStart_Rx();
}
void vMBPortSerialEnable( uint8_t xRxEnable, uint8_t xTxEnable )
{
	if (xRxEnable)
	{
        for (uint32_t i = 0; i < 20000; i++) ;
		 gpio_bit_reset(GPIOC, GPIO_PIN_14);
		//printf("wwwww\r\n");
	}
	else
	{
		gpio_bit_set(GPIOC, GPIO_PIN_14);
		for (uint32_t i = 0; i < 20000; i++) ;
		//printf("ssddds\r\n");
	}
	if (xTxEnable)
	{
		//USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
		usart_interrupt_enable(USART1,USART_INT_TBE);
	}
	else
	{
		//USART_ITConfig(USART2, USART_IT_TXE, DISABLE);
		usart_interrupt_disable(USART1,USART_INT_TBE);
	}
}
void eMBRTUStart_Rx( void )
{
	eRcvState = STATE_RX_IDLE;
    vMBPortSerialEnable( TRUE, FALSE );
}
void eMBRTUStart_Tx( void )
{
    vMBPortSerialEnable( FALSE, TRUE );
}
void eMBRTUStop( void )
{
    vMBPortSerialEnable( FALSE, FALSE );
}
#define Broadcast_addr	0xFF
u8 Slave_Addr_check(u8 addr)
{
	if(addr == dis_page_param.face_plate_param.Device_Slave_addr)
	{
		return 1;
	}
	else
	{
		return 0;
	}
}