#include "user_uart.h"
#include "driver_dma.h"

 

static UART_HandleTypeDef Uart1_handle;
static UART_HandleTypeDef Uart0_handle;

uint8_t  TxBuffer8[256];
uint8_t  RxBuffer8[256];


/*********************************************************************
 * @fn      uart0_isr_ram
 *
 * @brief   UART0 interruption, when uart0 FIFO received charaters, this ISR will be called
 *			
 *
 * @param   None 
 *       	 
 *
 * @return  None
 */
__attribute__((section("ram_code"))) void uart1_isr(void)
{
	uint32_t isr_id;
	volatile struct_UART_t * const uart_reg_ram = (volatile struct_UART_t *)UART1_BASE;
	isr_id = uart_reg_ram->FCR_IID.IID;
	if(((isr_id & 0x04) == 0x04) || ((isr_id & 0x0c) == 0x0c)) //receciver data available or character timeout indication
	{
		while(uart_reg_ram->LSR.LSR_BIT.DR)
		{
			uint8_t data = (uint8_t)uart_reg_ram->DATA_DLL.DATA;
			//app_at_recv_c(data);
			//printf("%c",data);
			uart_transmit(&Uart1_handle, &data, 1);
		}
	}
	else if((isr_id & 0x06) == 0x06)//receiver line status interrupt
	{
		uint32_t tmp = uart_reg_ram->LSR.LSR_DWORD;
		uart_reg_ram->FCR_IID.FCR = isr_id;
		uart_reg_ram->IER_DLH.IER.ELSI = 0;
	}
	//printf("uart1_isr\r\n");
}

__attribute__((section("ram_code"))) void uart0_isr(void)
{
	uint32_t isr_id;
	volatile struct_UART_t * const uart_reg_ram = (volatile struct_UART_t *)UART0_BASE;
	isr_id = uart_reg_ram->FCR_IID.IID;
	if(((isr_id & 0x04) == 0x04) || ((isr_id & 0x0c) == 0x0c)) //receciver data available or character timeout indication
	{
		while(uart_reg_ram->LSR.LSR_BIT.DR)
		{
			uint8_t data = (uint8_t)uart_reg_ram->DATA_DLL.DATA;
			uart_transmit(&Uart0_handle, &data, 1);
		}
	}
	else if((isr_id & 0x06) == 0x06)
	{
		uint32_t tmp = uart_reg_ram->LSR.LSR_DWORD;
		uart_reg_ram->FCR_IID.FCR = isr_id;
		uart_reg_ram->IER_DLH.IER.ELSI = 0;
	}
	
}
/*********************************************************************
 * @fn      at_init
 *
 * @brief   Initializate gAT_env elements and assign UART0 pins
 *			
 *
 * @param   None 
 *       	 
 *
 * @return  None
 */

void user_uart_init(void)
{
	
	  uint32_t i;
//    system_set_port_pull(GPIO_PA2,GPIO_PULL_UP,true);
//    system_set_port_mux(GPIO_PORT_A, GPIO_BIT_2, PORTA2_FUNC_UART1_RXD);
//    system_set_port_mux(GPIO_PORT_A, GPIO_BIT_3, PORTA3_FUNC_UART1_TXD);
		GPIO_InitTypeDef GPIO_Handle;
		__SYSTEM_GPIO_CLK_ENABLE();
	  __SYSTEM_UART1_CLK_ENABLE();
	  __SYSTEM_UART0_CLK_ENABLE();
	 
	  #if 0
		GPIO_Handle.Pin       = GPIO_PIN_2|GPIO_PIN_3;
		GPIO_Handle.Mode      = GPIO_MODE_AF_PP;
    GPIO_Handle.Pull      = GPIO_PULLUP;
    GPIO_Handle.Alternate = GPIO_FUNCTION_5;//串口用
    gpio_init(GPIO_A, &GPIO_Handle);
	  #endif  
		GPIO_Handle.Pin       = GPIO_PIN_0|GPIO_PIN_1;
		GPIO_Handle.Mode      = GPIO_MODE_AF_PP;
    GPIO_Handle.Pull      = GPIO_PULLUP;
    GPIO_Handle.Alternate = GPIO_FUNCTION_5;//串口用
    gpio_init(GPIO_A, &GPIO_Handle);
		
	  GPIO_Handle.Pin       = GPIO_PIN_6|GPIO_PIN_7;
		GPIO_Handle.Mode      = GPIO_MODE_AF_PP;
    GPIO_Handle.Pull      = GPIO_PULLUP;
    GPIO_Handle.Alternate = GPIO_FUNCTION_5;//串口用
    gpio_init(GPIO_C, &GPIO_Handle);
	 
    for (i = 0; i < 256; i++)
    {
        TxBuffer8[i] = i;
    }
    
    Uart1_handle.UARTx = Uart1;
    Uart1_handle.Init.BaudRate   = 115200;
    Uart1_handle.Init.DataLength = UART_DATA_LENGTH_8BIT;
    Uart1_handle.Init.StopBits   = UART_STOPBITS_1;
    Uart1_handle.Init.Parity     = UART_PARITY_NONE;
    Uart1_handle.Init.FIFO_Mode  = UART_FIFO_ENABLE;// UART_FIFO_ENABLE ;
    uart_init_ex(&Uart1_handle);
    //uart1_isr_int(&Uart1_handle);
    NVIC_EnableIRQ(UART1_IRQn);
    NVIC_SetPriority(UART1_IRQn, 6);
    //uart_transmit_IT(&Uart1_handle, TxBuffer8, 256);
    uart_transmit(&Uart1_handle, TxBuffer8, 256);
    //uart_receive_IT(&Uart1_handle, RxBuffer8, 1);
		__UART_INT_RX_ENABLE(Uart1_handle.UARTx);

		
		for (i = 0; i < 256; i++)
    {
        TxBuffer8[i] = i;
    }
    Uart1_handle.UARTx = Uart0;
    Uart1_handle.Init.BaudRate   = 115200;
    Uart1_handle.Init.DataLength = UART_DATA_LENGTH_8BIT;
    Uart1_handle.Init.StopBits   = UART_STOPBITS_1;
    Uart1_handle.Init.Parity     = UART_PARITY_NONE;
    Uart1_handle.Init.FIFO_Mode  = UART_FIFO_ENABLE;// UART_FIFO_ENABLE ;
    uart_init_ex(&Uart0_handle);
    //uart1_isr_int(&Uart1_handle);
    NVIC_EnableIRQ(UART0_IRQn);
    NVIC_SetPriority(UART0_IRQn, 6);
    //uart_transmit_IT(&Uart1_handle, TxBuffer8, 256);
    uart_transmit(&Uart0_handle, TxBuffer8, 256);
    //uart_receive_IT(&Uart1_handle, RxBuffer8, 1);
		__UART_INT_RX_ENABLE(Uart0_handle.UARTx);
}