PROFIBUS从站之AVR单片机 点击：2776 | 回复：21
发表于：2006-02-10 15:35:00
楼主
PB_SLAVE AVR实现
ATMEGA8535实现PROFIBUS DP从站
FCK = frequenz; BAUD = Baudrate; UBRR =
PB数据初始化：
void PB_Init(void);
串口初始化模块
void UART_Init(void);
-187.5kbps @ 6MHz
-receiver enable
-11 bit
-enable receiver irq
定时器0初始化：
TCNT0 =TIMER_INIT = 256 - 4 * (33 + 20)
串口模块功能：(功能：数据检查)
void UART_Check_Parity(void);
void UART_Set_Parity(void);
void UART_FC_Byte_Check(void);
void UART_Send_Pos_Ack(void);
void UART_Send_Pos_Ack_End(void);
void UART_Send_Ident(void);
void UART_Send_RS(void);
void Receive_Data_Ack(void);
void UART_Send_Request_Data(void);
void Restart_Sync_Timer(void);
串口中断模块：
void UART_RXC(void);
void Adr_Check(void);
void LE_valid_no(void);
void UART_TXC(void);
定时器中断模块：（功能：时钟同步）
Timer0_ISR(void);
Timer0_ISR_Start_Send(void);
AVR-PB-Slave.h头文件
#define IDENT_LENGTH 44
#define IDENT_BYTES (IDENT_LENGTH + 10)
//------------------------------------------------------------
//用户配置数据
#define TSYN 33
#define TSDR 20 //bit times!
#define PB_ADR 8
#define MAX_LENGTH 22 //max length of telegrams
#define TIMER_INIT 256 - 4 * (TSYN + TSDR) //timer0 counts 4 times to generate irq
#define TSYN_COUNTER TIMER_INIT + 4 * TSYN //this is what the timer should contain at tsyn
#define BR_DIV 1 //baud rate divider for desired baud
//rate - here 187.5kbps @ 6MHz
#define UART_CTRL_INIT 0b10010100 //enables recv-irq, recv and 9th bit
//串口标记定义
#define LE_valid 1 //Bit0: LE-gueltig
#define LE_validbit 0 //Bit0: LE-gueltig
#define variable 2 //Bit1: variabel
#define variablebit 1 //Bit1: variabel
#define counter_set1 4 //Bit2: counter_set1
#define counter_set1bit 2 //Bit2: counter_set1
#define counter_set2 8 //Bit3: counter_set2
#define counter_set2bit 3 //Bit3: counter_set2
#define telegr_end 16 //Bit4: telegr_end
#define telegr_endbit 4 //Bit4: telegr_end
#define recv_enabled 32 //Bit5: the receiver is being used
#define recv_enabledbit 5 //Bit5: the receiver is being used
#define tran_enabled 64 //Bit6: the tranceiver is being used
#define tran_enabledbit 6 //Bit6: the tranceiver is being used
#define adr_valid 128 //Bit7: this telegram has our adress
#define adr_validbit 7
//用户标记定义
#define DAExtbit 0
#define DAExt 1
#define SAExtbit 1
#define SAExt 2
#define PRIObit 2
#define PRIO 4
#define NO_ACKbit 3
#define NO_ACK 8
#define REQUbit 4
#define REQU 16
#define telegr_completbit 5 ;Bit0: telegr_complet
#define telegr_complet 32 ;Bit0: telegr_complet
//LSAP标记定义
#define Data_Ind0bit 0
#define Data_Ind0 1
#define Data_Ind1bit 1
#define Data_Ind1 2
#define Data_Ind2bit 2
ATMEGA8535实现PROFIBUS DP从站
FCK = frequenz; BAUD = Baudrate; UBRR =
PB数据初始化：
void PB_Init(void);
串口初始化模块
void UART_Init(void);
-187.5kbps @ 6MHz
-receiver enable
-11 bit
-enable receiver irq
定时器0初始化：
TCNT0 =TIMER_INIT = 256 - 4 * (33 + 20)
串口模块功能：(功能：数据检查)
void UART_Check_Parity(void);
void UART_Set_Parity(void);
void UART_FC_Byte_Check(void);
void UART_Send_Pos_Ack(void);
void UART_Send_Pos_Ack_End(void);
void UART_Send_Ident(void);
void UART_Send_RS(void);
void Receive_Data_Ack(void);
void UART_Send_Request_Data(void);
void Restart_Sync_Timer(void);
串口中断模块：
void UART_RXC(void);
void Adr_Check(void);
void LE_valid_no(void);
void UART_TXC(void);
定时器中断模块：（功能：时钟同步）
Timer0_ISR(void);
Timer0_ISR_Start_Send(void);
AVR-PB-Slave.h头文件
#define IDENT_LENGTH 44
#define IDENT_BYTES (IDENT_LENGTH + 10)
//------------------------------------------------------------
//用户配置数据
#define TSYN 33
#define TSDR 20 //bit times!
#define PB_ADR 8
#define MAX_LENGTH 22 //max length of telegrams
#define TIMER_INIT 256 - 4 * (TSYN + TSDR) //timer0 counts 4 times to generate irq
#define TSYN_COUNTER TIMER_INIT + 4 * TSYN //this is what the timer should contain at tsyn
#define BR_DIV 1 //baud rate divider for desired baud
//rate - here 187.5kbps @ 6MHz
#define UART_CTRL_INIT 0b10010100 //enables recv-irq, recv and 9th bit
//串口标记定义
#define LE_valid 1 //Bit0: LE-gueltig
#define LE_validbit 0 //Bit0: LE-gueltig
#define variable 2 //Bit1: variabel
#define variablebit 1 //Bit1: variabel
#define counter_set1 4 //Bit2: counter_set1
#define counter_set1bit 2 //Bit2: counter_set1
#define counter_set2 8 //Bit3: counter_set2
#define counter_set2bit 3 //Bit3: counter_set2
#define telegr_end 16 //Bit4: telegr_end
#define telegr_endbit 4 //Bit4: telegr_end
#define recv_enabled 32 //Bit5: the receiver is being used
#define recv_enabledbit 5 //Bit5: the receiver is being used
#define tran_enabled 64 //Bit6: the tranceiver is being used
#define tran_enabledbit 6 //Bit6: the tranceiver is being used
#define adr_valid 128 //Bit7: this telegram has our adress
#define adr_validbit 7
//用户标记定义
#define DAExtbit 0
#define DAExt 1
#define SAExtbit 1
#define SAExt 2
#define PRIObit 2
#define PRIO 4
#define NO_ACKbit 3
#define NO_ACK 8
#define REQUbit 4
#define REQU 16
#define telegr_completbit 5 ;Bit0: telegr_complet
#define telegr_complet 32 ;Bit0: telegr_complet
//LSAP标记定义
#define Data_Ind0bit 0
#define Data_Ind0 1
#define Data_Ind1bit 1
#define Data_Ind1 2
#define Data_Ind2bit 2
发表于：2010-07-05 14:15:43
17楼
发表于：2011-03-17 15:46:52
20楼
mimikankan, 你好, 我正在做一个ATMEGA128单片机与SPC3构成的DP从站接口并与PLCs7-300链接,希望能得到你的帮助,希望得到你的一份原理图和源程序,谢谢
我的邮箱: liangqi2728@sina.com QQ号：782601119
我的邮箱: liangqi2728@sina.com QQ号：782601119
热门招聘
相关主题
- rs485多机通信问题
[15282] - PROFIBUS从站开发[1890]
- 485通讯接法[1628]
- 现场总线简介[1574]
- 谁在做DeviceNet，可以互相学...[1435]
- 转载：PROFIBUS与现场总线国际...[2368]
- 无线网桥点对点通信传输与4G...[1594]
- 求助：LNS监控软件的内存增加...[1945]
- RS485能否从机向主机发出请求...[5485]
- 虚拟专用网VPN系列讲座(一)[2269]
官方公众号
智造工程师
-
客服
-
小程序
-
公众号
工控网智造工程师好文精选
