/*----------------------------------------------------------------------------------------------------
	INCLUDE HEADE FILES
----------------------------------------------------------------------------------------------------*/

#include    "Includes.h"


/* ---------------------------------------------------------------------------------------------------
- 函数名称: Init_uart
- 函数功能: UART初始化
- 输入参数: 初始化串口号(0:uart0 1:uart1); 波特率
- 创建日期: 2016-05-26
----------------------------------------------------------------------------------------------------*/
extern	void	Init_uart(uint32_t	ch , uint32_t	baud)
{
			uint32_t	val;
			
			__write_hw_reg32(CPR_RSTCTL_SUBRST_SW , (1<<(16+ch)));	//复位uart模块
			__write_hw_reg32(CPR_RSTCTL_SUBRST_SW , ((1<<(16+ch))|(1<<ch)));//解复位uart模块		
			
			__read_hw_reg32(CPR_LP_CTL , val);
			val &= ~(1<<(1-ch));
			__write_hw_reg32(CPR_LP_CTL , val);						//关闭uartx时钟保护
			
			val = (1<<(16+ch+4)) | (1<<(ch+4));
			__write_hw_reg32(CPR_CTLAPBCLKEN_GRCTL , val); 			//打开uartx pclk
			__write_hw_reg32(CPR_UARTx_CLK_GRCTL(ch), 0x110018);
			//__write_hw_reg32(CPR_UARTx_CLK_CTL(ch), 0x480271);
            __write_hw_reg32(CPR_UARTx_CLK_CTL(ch), baud>>4);	
    
			__write_hw_reg32(UARTx_TCR(ch) , 0x80);                	//使能DLAB位
			//__write_hw_reg32(UARTx_DLL(ch) , baud);
            __write_hw_reg32(UARTx_DLL(ch) , baud&0x0F);
			__write_hw_reg32(UARTx_DLH(ch) , 0);                 		

			__write_hw_reg32(UARTx_TCR(ch) , 0x03);                	//清零DLAB位,8个BIT位
			__write_hw_reg32(UARTx_FCR(ch) , 0xb7);                	//接收FIFO半满报中断, 并使能FIFO中断
            __write_hw_reg32(UARTx_IER(ch) , 0x01);                	//打开接收中断
			val = UART0_IRQn + ch;
			NVIC_EnableIRQ((IRQn_Type)val);
}

/* ---------------------------------------------------------------------------------------------------
- 函数名称: UART0_Handler
- 函数功能: UART0中断处理函数
- 输入参数: 无
- 创建日期: 2016-05-26
----------------------------------------------------------------------------------------------------*/
extern	void	UART0_Handler(void)
{
		uint32_t	iWK = 0 ;
		uint8_t		tWK = 0 ;

		__read_hw_reg32(UART0_IIR , iWK);
		iWK &= 0x0F;
        
		if((iWK != 0x04) && (iWK != 0x0c)) return;
		
		__read_hw_reg32(UART0_RBR , tWK);
	
}

/* ---------------------------------------------------------------------------------------------------
- 函数名称: UART1_Handler
- 函数功能: UART1中断处理函数
- 输入参数: 无
- 创建日期: 2016-05-26
----------------------------------------------------------------------------------------------------*/
extern	void	UART1_Handler(void)
{
		uint32_t	iWK = 0 ;
		uint8_t		tWK = 0 ;

		__read_hw_reg32(UART1_IIR , iWK);
		iWK &= 0x0F;
    
		if((iWK != 0x04) && (iWK != 0x0c)) return;
		
		__read_hw_reg32(UART1_RBR , tWK);
#if 1	
	   Uart_Send_Char(1,'R');
	   Uart_Send_Char(1,'e');
	   Uart_Send_Char(1,'v');
	   Uart_Send_Char(1,':');
	   Uart_Send_Char(1,tWK);
	   Uart_Send_Char(1,'\n');
#endif	    

}
/* ---------------------------------------------------------------------------------------------------
- 函数名称: Uart_Send_Char
- 函数功能: Uart发送一个字符
- 输入参数: 串口号; 要发送的字符
- 创建日期: 2016-05-26
----------------------------------------------------------------------------------------------------*/
extern	void	Uart_Send_Char(uint32_t	ch, uint8_t	c)
{
		unsigned	int	status;
		for(; ;)
		{			
				__read_hw_reg32(UARTx_TSR(ch), status);
				status &= 0x20;
				if(status == 0x20) break;
		}
		__write_hw_reg32(UARTx_THR(ch), c);
}

/* ---------------------------------------------------------------------------------------------------
- 函数名称: Uart_Send_String
- 函数功能: Uart发送一个字符串
- 输入参数: 串口号; 要发送的字符串
- 创建日期: 2016-05-26
----------------------------------------------------------------------------------------------------*/
extern	void	Uart_Send_String(uint32_t	ch, uint8_t	*s)
{
		while(*s != '\0')				
		{	
				Uart_Send_Char(ch, *s++);
		}
}
/* ---------------------------------------------------------------------------------------------------
- 函数名称: Uart_Send_Buf
- 函数功能: Uart发送一个长度为length的uint8_t类型的数组
- 输入参数: 串口号; 要发送的数组，数组长度
- 创建日期: 2019-04-02
- 作    者：陈俊伟
----------------------------------------------------------------------------------------------------*/
extern	void	Uart_Send_Buf(uint32_t	ch, uint8_t	*s,uint32_t length)
{
		while(length--)				
		{	
				Uart_Send_Char(ch, *s++);
		}
}

 
extern  void    test_uart(void) 
{
 	gpio_mux_ctl(0,0);gpio_fun_inter(0,0);gpio_fun_sel(0,UART1_RX);
	gpio_mux_ctl(1,0);gpio_fun_inter(1,0);gpio_fun_sel(1,UART1_TX);
    Init_uart(1, BAUD_57600);
	Uart_Send_String(1,"I am uart1...\n");
}