1 /*
2  * Copyright 2009-2011 Oleg Mazurov, Circuits At Home, http://www.circuitsathome.com
3  * MAX3421E USB host controller support
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the authors nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29 
30 /* MAX3421E functions */
31 #ifndef _MAX3421E_H_
32 #define _MAX3421E_H_
33 
34 #include "Arduino.h"
35 #include "Max3421e_constants.h"
36 
37 class MAX3421E /* : public SPI */ {
38     // byte vbusState;
39     public:
40         MAX3421E( void );
41         byte getVbusState( void );
42 //        void toggle( byte pin );
43         static void regWr( byte, byte );
44         char * bytesWr( byte, byte, char * );
45         static void gpioWr( byte );
46         byte regRd( byte );
47         char * bytesRd( byte, byte, char * );
48         byte gpioRd( void );
49         boolean reset();
50         boolean vbusPwr ( boolean );
51         void busprobe( void );
52         void powerOn();
53         byte IntHandler();
54         byte GpxHandler();
55         byte Task();
56     private:
57 	static void pinInit(void);
58 	static void setRST(uint8_t val);
59 	static uint8_t readINT(void);
60 	static uint8_t readGPX(void);
61 
spi_init()62       static void spi_init() {
63         uint8_t tmp;
64         // initialize SPI pins
65         pinMode(SCK_PIN, OUTPUT);
66         pinMode(MOSI_PIN, OUTPUT);
67         pinMode(MISO_PIN, INPUT);
68         pinMode(SS_PIN, OUTPUT);
69         /* mode 00 (CPOL=0, CPHA=0) master, fclk/2. Mode 11 (CPOL=11, CPHA=11) is also supported by MAX3421E */
70         SPCR = 0x50;
71         SPSR = 0x01;
72         /**/
73         tmp = SPSR;
74         tmp = SPDR;
75     }
76 //        void init();
77     friend class Max_LCD;
78 };
79 
80 
81 
82 
83 #endif //_MAX3421E_H_
84