131 lines
4.5 KiB
C
131 lines
4.5 KiB
C
#ifndef DEVICE_UART_H
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#define DEVICE_UART_H
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#include "generic/typedef.h"
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#include "device/device.h"
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#include "generic/ioctl.h"
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#include "system/task.h"
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/// \cond DO_NOT_DOCUMENT
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#define UART_DISABLE 0x00000000
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#define UART_DMA_SUPPORT 0x00000001
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#define UART_TX_USE_DMA 0x00000003
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#define UART_RX_USE_DMA 0x00000005
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#define UART_DEBUG 0x00000008
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struct uart_outport {
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u8 tx_pin;
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u8 rx_pin;
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u16 value;
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};
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/// \endcond
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/**
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* \name UART_CLK selest
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* \{
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*/
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enum uart_clk_src {
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LSB_CLK, /*!< 低速时钟 */
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OSC_CLK, /*!< 晶振时钟 */
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PLL_48M, /*!< PLL48M时钟 */
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};
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/* \} name */
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struct uart_platform_data {
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u8 *name; /*!< 串口名称，在注册的时候已经配好*/
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u8 irq; /*!< 中断号，在注册的时候已经对应设置好了*/
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u8 flow_ctl_enable; /*!< 1:串口1控制流开启*/
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u8 disable_tx_irq; /*!< 1:不使用发送中断*/
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u8 disable_rx_irq; /*!< 1:不使用中断接收*/
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u8 disable_ot_irq; /*!< 1:不使用超时中断*/
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u8 tx_pin_hd; /*!< 1:tx io开强驱*/
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int tx_pin; /*!< 发送引脚,不配置需设置-1*/
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int rx_pin; /*!< 接收引脚,不配置需设置-1*/
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int flags; /*!< 串口用作打印*/
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u32 baudrate; /*!< 波特率设置*/
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int port; /*!< enum _uart_port0-3的值*/
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int input_channel; /*!< 输入通道*/
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int output_channel; /*!< 输出通道*/
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u32 max_continue_recv_cnt; /*!< 连续接收最大字节*/
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u32 idle_sys_clk_cnt; /*!< 超时计数器，如果在指定的时间里没有收到任何数据，则产生超时中断*/
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enum uart_clk_src clk_src; /*!< 选择时钟源*/
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int rts_pin; /*!< 串口一控制流RTS脚*/
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int cts_pin; /*!< 串口一控制流CTS脚*/
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int rts_output_channel; /*!< RTS输出通道,只支持输出通道2，3*/
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};
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/**
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* \name UART error
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* \{
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*/
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enum {
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UART_CIRCULAR_BUFFER_WRITE_OVERLAY = -1, /*!< 循环buf写满*/
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UART_RECV_TIMEOUT = -2, /*!< 接收超时*/
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UART_RECV_EXIT = -3, /*!< 接收终止退出*/
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};
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/* \} name */
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/**
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* \name UART dev_ioctl funciton selest
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* \{
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*/
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#define UART_MAGIC 'U'
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#define UART_FLUSH _IO(UART_MAGIC,1) /*!< 串口重载*/
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#define UART_SET_RECV_ALL _IOW(UART_MAGIC,2,bool) /*!< 设置串口等待接收满才退出，需先调用下面的阻塞指令*/
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#define UART_SET_RECV_BLOCK _IOW(UART_MAGIC,3,bool) /*!< 设置串口接收阻塞*/
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#define UART_SET_RECV_TIMEOUT _IOW(UART_MAGIC,4,u32) /*!< 设置串口接收超时*/
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#define UART_SET_RECV_TIMEOUT_CB _IOW(UART_MAGIC,5,int (*)(void)) /*!< 设置串口超时之后回调的函数*/
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#define UART_GET_RECV_CNT _IOR(UART_MAGIC,6,u32) /*!< 获得串口当前接收到的计数值*/
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#define UART_START _IO(UART_MAGIC,7) /*!< 开启串口*/
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#define UART_SET_CIRCULAR_BUFF_ADDR _IOW(UART_MAGIC,8,void *) /*!< 设置串口循环buf地址*/
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#define UART_SET_CIRCULAR_BUFF_LENTH _IOW(UART_MAGIC,9,u32) /*!< 设置串口循环buf长度*/
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#define UART_SET_BAUDRATE _IOW(UART_MAGIC,10,u32) /*!<串口运行过程中更换波特率，初始化串口时不需要调用这*/
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#define UART1_FLOW_CTL_RTS_SUSPEND _IO(UART_MAGIC,11) /*!< 串口1控制流挂起*/
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#define UART1_FLOW_CTL_RTS_RESUME _IO(UART_MAGIC,12) /*!< 串口1控制流恢复*/
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/* \} name */
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/// \cond DO_NOT_DOCUMENT
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#define UART_PLATFORM_DATA_BEGIN(data) \
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static const struct uart_platform_data data = {
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#define UART_PLATFORM_DATA_END() \
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};
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struct uart_device {
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char *name;
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const struct uart_operations *ops;
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struct device dev;
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const struct uart_platform_data *priv;
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OS_MUTEX mutex;
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};
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struct uart_operations {
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int (*init)(struct uart_device *);
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int (*read)(struct uart_device *, void *buf, u32 len);
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int (*write)(struct uart_device *, void *buf, u16 len);
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int (*ioctl)(struct uart_device *, u32 cmd, u32 arg);
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int (*close)(struct uart_device *);
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};
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#define REGISTER_UART_DEVICE(dev) \
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static struct uart_device dev //SEC_USED(.uart)
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extern struct uart_device uart_device_begin[], uart_device_end[];
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#define list_for_each_uart_device(p) \
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for (p=uart_device_begin; p<uart_device_end; p++)
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extern const struct device_operations uart_dev_ops;
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/// \endcond
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#endif
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