First attempt at CFontz633...

server/drivers/CFontz633io.h

@@ -0,0 +1,78 @@
+#ifndef CFONTZ633IO_H
+#define CFONTZ633IO_H
+/* ====================================================================
+ * 635 WinTest Code.
+ * SERIAL.C: Windows 32 packet based example code
+ * Copyright 2001, Crystalfontz America, Inc. Written by Brent A. Crosby
+ * www.crystalfontz.com, brent@crystalfontz.com
+ * ====================================================================
+ */
+
+#define CF633_Ping_Command 0
+#define CF633_Get_Hardware_And_Firmware_Version 1
+#define CF633_Write_User_Flash_Area 2
+#define CF633_Read_User_Flash_Area 3
+#define CF633_Store_Current_State_As_Boot_State 4
+#define CF633_Reboot 5
+#define CF633_Clear_LCD_Screen 6
+#define CF633_Set_LCD_Contents_Line_One 7
+#define CF633_Set_LCD_Contents_Line_Two 8
+#define CF633_Set_LCD_Special_Character_Data 9
+#define CF633_Read_Height_Bytes_of_LCD_Memory 10
+#define CF633_Set_LCD_Cursor_Position 11
+#define CF633_Set_LCD_Cursor_Style 12
+#define CF633_Set_LCD_Contrast 13
+#define CF633_Set_LCD_And_Keypad_Backlight 14
+#define CF633_Query_Last_Fan_Pulse_Count 15
+#define CF633_Set_Up_Fan_Reporting 16
+#define CF633_Set_Fan_Power 17
+#define CF633_Read_DOW_Device_Information 18
+#define CF633_Set_Up_Temperature_Reporting 19
+#define CF633_Arbitrary_DOW_Transaction 20
+#define CF633_Set_Up_Live_Fan_or_Temperature_Display 21
+
+typedef unsigned char ubyte;
+typedef signed char sbyte;
+typedef unsigned short word;
+typedef unsigned long dword;
+typedef union {
+    ubyte as_bytes[2];
+    word as_word;
+} WORD_UNION;
+
+void send_bytes_message(int fd, int len, int msg, char *framebuf);
+void send_onebyte_message(int fd, int msg, int value);
+void send_zerobyte_message(int fd, int msg);
+
+void            EmptyReceiveBuffer(void);
+int            Serial_Init(int port, int baud_rate);
+void           Uninit_Serial();
+void           SendByte(int fd, unsigned char datum);
+void           Sync_Read_Buffer(ubyte expected_bytes);
+int	       BytesAvail(void);
+char           GetByte(void);
+int            PeekBytesAvail(void);
+void           Sync_Peek_Pointer(void);
+void           AcceptPeekedData(void);
+ubyte PeekByte(void);
+void         Clear_Buffer(void);
+void           Buffer_Character(int fd, unsigned char datum);
+void           Buffer_String(int fd, char *input);
+void           Send_Buffer(int fd);
+
+#define MAX_DATA_LENGTH 16
+#define MAX_COMMAND 21
+
+typedef struct {
+    ubyte command;
+    ubyte data_length;
+    ubyte data[MAX_DATA_LENGTH];
+    WORD_UNION CRC;
+} COMMAND_PACKET;
+int get_crc(char * bufptr, int len, int seed);
+extern COMMAND_PACKET incoming_command;
+extern COMMAND_PACKET outgoing_response;
+ubyte check_for_packet(ubyte expected_length);
+void send_packet(int fd);
+
+#endif