1 // license:BSD-3-Clause
2 // copyright-holders:Joakim Larsson Edstrom
3 /**********************************************************************
4 
5     Siemens SDA5708  8 character 7x5 dot matrix LED display
6 
7 **********************************************************************/
8 
9 #ifndef MAME_VIDEO_SDA5708_H
10 #define MAME_VIDEO_SDA5708_H
11 
12 #pragma once
13 
14 /* Misc info
15  * ---------
16  * http://www.sbprojects.com/knowledge/footprints/sda5708/index.php
17  * http://arduinotehniq.blogspot.se/2015/07/sda5708-display-8-character-7x5-dot.html
18  *
19  * Display front - LEDs
20  * --------------------
21  *           xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx
22  *           xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx
23  *           xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx
24  *           xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx
25  *           xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx
26  *           xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx
27  *           xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx  xxxxx
28  *            Dig0   Dig1   Dig2   Dig3   Dig4   Dig5   Dig6   Dig7
29  *
30  * Display rear - Pinout
31  * ---------------------
32  *        +--------------------------------------------------------+
33  *        | O                                                    O |
34  *        |    +----------------------------------------------+    |
35  *        |    |                  o o o o o o                 |    |
36  *        |    |              Pin:6 5 4 3 2 1                 |    |
37  *        |    |                                              |    |
38  *        |    +----------------------------------------------+    |
39  *        +--------------------------------------------------------+
40  *             6:GND  5:_RESET  4:SDCLK  3:Data  2:_Load  1:Vcc
41  *
42  */
43 
44 
45 ///*************************************************************************
46 //  TYPE DEFINITIONS
47 ///*************************************************************************
48 
49 // ======================> sda5708_device
50 
51 class sda5708_device :  public device_t
52 {
53 public:
54 	// construction/destruction
55 	sda5708_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
56 
57 	DECLARE_WRITE_LINE_MEMBER( load_w );
58 	DECLARE_WRITE_LINE_MEMBER( data_w );
59 	DECLARE_WRITE_LINE_MEMBER( sdclk_w );
60 	DECLARE_WRITE_LINE_MEMBER( reset_w );
61 
62 protected:
63 	// device-level overrides
64 	virtual void device_start() override;
65 	virtual void device_reset() override;
66 
67 	void update_display();
68 
69 private:
70 	enum {
71 		SDA5708_REG_MASK       = 0xE0,
72 
73 		SDA5708_CNTR_COMMAND   = 0xE0,
74 		SDA5708_CNTR_BRIGHT_MAS= 0x1F,
75 		SDA5708_CNTR_BRIGHT_100= 0x00,
76 		SDA5708_CNTR_BRIGHT_53 = 0x01,
77 		SDA5708_CNTR_BRIGHT_40 = 0x02,
78 		SDA5708_CNTR_BRIGHT_27 = 0x03,
79 		SDA5708_CNTR_BRIGHT_20 = 0x04,
80 		SDA5708_CNTR_BRIGHT_13 = 0x05,
81 		SDA5708_CNTR_BRIGHT_6_6= 0x06,
82 		SDA5708_CNTR_BRIGHT_0  = 0x07,
83 		SDA5708_CNTR_PKCUR_12_5= 0x08,
84 
85 		SDA5708_CLEAR_COMMAND  = 0xC0,
86 
87 		SDA5708_ADDR_COMMAND   = 0xA0,
88 		SDA5708_ADDR_LED_MASK  = 0x07,
89 		SDA5708_ADDR_LED0      = 0x00,
90 		SDA5708_ADDR_LED1      = 0x01,
91 		SDA5708_ADDR_LED2      = 0x02,
92 		SDA5708_ADDR_LED3      = 0x03,
93 		SDA5708_ADDR_LED4      = 0x04,
94 		SDA5708_ADDR_LED5      = 0x05,
95 		SDA5708_ADDR_LED6      = 0x06,
96 		SDA5708_ADDR_LED7      = 0x07,
97 
98 		SDA5708_DATA_COMMAND   = 0x00
99 	};
100 
101 	output_finder<8, 7, 5> m_dots;
102 	uint8_t m_serial;
103 	uint8_t m_load;
104 	uint8_t m_reset;
105 	uint8_t m_data;
106 	uint8_t m_sdclk;
107 	uint8_t m_dispmem[7 * 8];
108 	uint8_t m_cdp;
109 	uint8_t m_digit;
110 	uint8_t m_bright;
111 	uint8_t m_clear;
112 	uint8_t m_ip;
113 };
114 
115 
116 // device type definition
117 DECLARE_DEVICE_TYPE(SDA5708, sda5708_device)
118 
119 #endif // MAME_VIDEO_SDA5708_H
120