//---------------------------------------------------- //Copyright (C), 2004-2009, lst. //版权所有 (C), 2004-2009, lst. //所属模块: uart驱动程序 //作者：lst //版本：V1.0.1 //文件描述: 驱动44b0的uart //其他说明: //修订历史: //2. ... //1. 日期: 2009-03-10 // 作者: lst // 新版本号: V1.0.0 // 修改说明: 原始版本 //------------------------------------------------------ #ifndef _UART_H_ #define _UART_H_ #ifdef __cplusplus extern "C" { #endif //UTRSTAT状态位定义 #define UartTXShiftEmpty (1<<2) //1:发送移位寄存器空,0:非空 #define UartTxBufEmpty (1<<1) //1:发送缓冲区空,0:非空 #define UartRxBufNotEmpty (1<<0) //1:接受缓冲区有数据,0:无数据 //UFCON FIFO控制寄存器 #define cn_tx_fifo_reset (1<<2) //写1复位发送fifo,读总是0 #define cn_rx_fifo_reset (1<<1) //写1复位发送fifo,读总是0 //UFSTAT FIFO状态寄存器 #define cn_rx_over (1<<6) //1:接收fifo溢出,0:正常 //通信状态变量各位定义 #define cn_ser_tx_busy (1<<0) #define cn_ser_rxbuf_empty (1<<1) #define cn_ser_receive_over (1<<2) //中断控制位 #define cn_uartint_msk_modem (1<<3) #define cn_uartint_msk_tx (1<<2) #define cn_uartint_msk_error (1<<1) #define cn_uartint_msk_rx (1<<0) //串口状态控制结构 struct uart_UCB { struct ring_buf send_ring_buf; //环形发送缓冲区. struct ring_buf recv_ring_buf; //环形接收缓冲区. struct semaphore_LCB *send_buf_semp; //发送缓冲区锁 struct semaphore_LCB *recv_buf_semp; //接收缓冲区锁 uint16_t evtt_right_write; //设备右手被写后弹出的事件类型 uint16_t evtt_left_write; //设备左手被写后弹出的事件类型 uint16_t recv_trigger_level; //串口接收触发水平,即收到多少数据时弹出事件 uint16_t timeout; //未到触发水平,持续设定时间内没有收到数据, //也弹出事件. uint16_t send_trigger_level; //发送同步触发水平，当发送环形缓冲区满，将 //用send_buf_semp阻塞当前线程，直到发送缓冲 //区数据量降至send_trigger_level时释放之。 struct uart_reg volatile *my_reg; uint32_t baud; // uint32_t rx_int_line,tx_int_line; //发送和接收中断号 ufast_t status; ufast_t serial_no; }; //串口错误类型 enum uart_error_no { enum_recv_fifo_over, //接收硬件fifo溢出 enum_recv_buf_over, //接收缓冲区溢出 }; //uart0 base address:0x7f005000 //uart1 base address:0x7f005400 //uart2 base address:0x7f005800 //uart3 base address:0x7f005c00 struct uart_reg { uint32_t ULCON; //offset 00 Line control uint32_t UCON; //offset 04 Control uint32_t UFCON; //offset 08 FIFO control uint32_t UMCON; //offset 0c Modem control uint32_t UTRSTAT; //offset 10 Tx/Rx status uint32_t UERSTAT; //offset 14 Rx error status uint32_t UFSTAT; //offset 18 FIFO status uint32_t UMSTAT; //offset 1c Modem status #ifdef __BIG_ENDIAN uint8_t reserve; uint8_t reserve1; uint8_t reserve2; uint8_t UTXH; //offset 23 uint8_t reserve3; uint8_t reserve4; uint8_t reserve5; uint8_t URXH; //offset 27 #else //Little Endian uint8_t UTXH; //offset 20 uint8_t reserve; //UTXH和URXH是字节访问寄存器,reserve是占位变量. uint8_t reserve1; uint8_t reserve2; uint8_t URXH; //offset 24 uint8_t reserve3; uint8_t reserve4; uint8_t reserve5; #endif uint32_t UBRDIV; //offset 28 Baud rate divisor uint32_t UDIVSLOT; //offset 2c UART channel 0 Dividing slot register uint32_t UINTP; //offset 30 UART channel 0 Interrupt Pending Register uint32_t UINTSP; //offset 34 UART channel 0 Interrupt Source Pending Register uint32_t UINTM; //offset 38 UART channel 0 Interrupt Mask Register }; #define uart0_buf_len 512 #define uart1_buf_len 512 #define uart2_buf_len 512 #define uart3_buf_len 512 //串口设备控制命令常数，用于uart_ctrl函数。 #define cn_uart_connect_recv_evtt 0 //设备被从右手写入的数据超过软件触发水平时弹出 //本类型事件 #define cn_uart_disconnect_recv_evtt 1 //断开右手事件 #define cn_uart_connect_send_evtt 2 //设备被从左手写入的数据时弹出本类型事件 #define cn_uart_disconnect_send_evtt 3 //断开左手事件 #define cn_uart_start 4 //启动串口 #define cn_uart_stop 5 //停止串口 #define cn_uart_set_baud 6 //设置uartBaud. #define cn_uart_send_data 7 //发送数据 #define cn_uart_recv_data 8 //接收数据 #define cn_uart_completed_send 9 //完成发送工作 #define cn_uart_rx_pause 10 //暂停接收数据到缓冲区 #define cn_uart_rx_resume 11 //重新开始接收数据到缓冲区 #define cn_uart_overtime 12 //设置接收超时时间，毫秒数 #define cn_uart_recv_soft_level 13 //设置接收软件缓冲区触发水平 #define cn_uart_send_soft_level 14 //设置接收软件缓冲区触发水平 #define cn_uart_recv_hard_level 15 //设置接收fifo触发水平 #define cn_uart_send_hard_level 16 //设置发送fifo触发水平 ptu32_t uart_ctrl(struct dev_handle *uart_dev,uint32_t cmd, ptu32_t data1,ptu32_t data2); ptu32_t uart_left_write(struct dev_handle *uart_dev,ptu32_t src_buf, ptu32_t res,ptu32_t len); ptu32_t uart_right_write(struct dev_handle *uart_dev,ptu32_t src_buf, ptu32_t res,ptu32_t len); ptu32_t uart_left_read(struct dev_handle *uart_dev,ptu32_t src_buf, ptu32_t res,ptu32_t len); ptu32_t uart_right_read(struct dev_handle *uart_dev,ptu32_t src_buf, ptu32_t res,ptu32_t len); uint32_t uart0_int(ufast_t uart_int_line); uint32_t uart1_int(ufast_t uart_int_line); uint32_t uart2_int(ufast_t uart_int_line); uint32_t uart3_int(ufast_t uart_int_line); bool_t module_init_uart0(void); bool_t module_init_uart1(void); bool_t module_init_uart2(void); bool_t module_init_uart3(void); void uart_error_service(struct event_script *my_event); void uart_send_service(struct event_script *my_event); #ifdef __cplusplus } #endif #endif // _UART_H_