--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/drivers/drv_app/r2d/board/uwire.c	Fri May 15 01:28:16 2020 +0000
@@ -0,0 +1,92 @@
+/************************************************************************************
+* uwire.c :            contains driver for the uwire HD module						*
+*																					*	
+*																					*
+*	Author: Davide Carpegna															*
+*																					*
+*	version: 1.0																	*
+*																					*
+*	Date: 22/09/2000																*
+*   (C) Copyright 2000 by Texas Instruments Incorporated, All Rights Reserved		*		
+************************************************************************************/
+
+#include "rv/general.h"
+#include "r2d/uwire.h" 
+#include "rvf/rvf_api.h"
+
+/********************************************************************/
+/*	set the DC input to low for command transmission				*/
+/*																	*/
+/********************************************************************/
+void set_DC_low(void)
+{
+	* (volatile UINT16 *) GPIO_OUT &= ~(0x02); //gpio(1) ->0
+}
+
+/********************************************************************/
+/*	set the DC input to high for data transmission	 				*/
+/*																	*/
+/********************************************************************/
+void set_DC_high(void)
+{
+	* (volatile UINT16 *) GPIO_OUT |= 0x02; //gpio(1) ->1
+}
+
+/********************************************************************/
+/*	transmit commands to the lcd		    		 				*/
+/*																	*/
+/********************************************************************/
+void lcd_transmit_cmd(UINT8 cmd)
+{
+	set_DC_low();
+	* (volatile UINT16 *) TDR = cmd <<8;
+	* (volatile UINT16 *) CSR |= NB_BITS_WR_8 + CS_CMD + START ; // transmit command data
+	while (((* (volatile UINT16 *) CSR) & CSRB) != 0 ); // wait for end of WRITE
+	* (volatile UINT16 *) CSR &= ~CS_CMD; // clears Chip Select 	
+}
+
+/********************************************************************/
+/*	transmit data to the lcd			    		 				*/
+/*																	*/
+/********************************************************************/
+void lcd_transmit_data(UINT8 data)
+{
+	set_DC_high();
+	* (volatile  UINT16 *) TDR = data <<8;
+	* (volatile UINT16 *) CSR |= NB_BITS_WR_8 + CS_CMD + START ; // transmit data
+		//while (((* (volatile UINT16 *) CSR) & CSRB) != 0 ); // wait for end of WRITE
+	//* (volatile UINT16 *) CSR &= ~CS_CMD; // clears Chip Select 	
+}
+
+extern BOOLEAN lcd_polling(void)
+{
+	if (((* (volatile UINT16 *) CSR) & CSRB) == 0 )
+	{
+	    * (volatile UINT16 *) CSR &= ~CS_CMD; // clears Chip Select 
+		return(TRUE);
+	}
+	else 
+		return(FALSE);
+}
+
+/********************************************************************/
+/*	initialize the uwire parameters for the lcd		    			*/
+/*																	*/
+/********************************************************************/
+void uwire_init_lcd()
+{
+	* ( UINT16 *) GPIO_INOUT &= ~(0x0002); // configures gpio(1) in output mode
+	
+	* ( UINT16 *) CNTL_RST &= ~(0x04); // releases reset_out
+	* ( UINT16 *) CNTL_RST |= (0x04); // set reset_out to 0
+	rvf_delay(RVF_MS_TO_TICKS(1));    // waits for 5 ms
+	* ( UINT16 *) CNTL_RST &= ~(0x04); // releases reset_out
+
+	
+	* (volatile UINT16 *) SR1 = CS1_FRQ_FINT_4 ; // F_INT/4 -> 13M/4 = 3.25 Mhz   
+	* (volatile UINT16 *) SR3 = SR3_CLK_EN; // enables the uwire clock
+	* (volatile UINT16 *) CSR = INDEX_CS1; // selects CS1
+}
+
+
+