1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.io/license.html
*/
#ifndef _GINPUT_LLD_MOUSE_BOARD_H
#define _GINPUT_LLD_MOUSE_BOARD_H
// Resolution and Accuracy Settings
#define GMOUSE_STMPE811_PEN_CALIBRATE_ERROR 8
#define GMOUSE_STMPE811_PEN_CLICK_ERROR 6
#define GMOUSE_STMPE811_PEN_MOVE_ERROR 4
#define GMOUSE_STMPE811_FINGER_CALIBRATE_ERROR 14
#define GMOUSE_STMPE811_FINGER_CLICK_ERROR 18
#define GMOUSE_STMPE811_FINGER_MOVE_ERROR 14
// How much extra data to allocate at the end of the GMouse structure for the board's use
#define GMOUSE_STMPE811_BOARD_DATA_SIZE 0
// Options - Leave these commented to make it user configurable in the gfxconf.h
//#define GMOUSE_STMPE811_READ_PRESSURE GFXOFF
//#define GMOUSE_STMPE811_SELF_CALIBRATE GFXOFF
//#define GMOUSE_STMPE811_TEST_MODE GFXOFF
// If GFXON this board has the STMPE811 IRQ pin connected to a GPIO.
// Note: Although this board has such a pin its reliability has not been tested on this board!!!!!
#define GMOUSE_STMPE811_GPIO_IRQPIN GFXOFF
// If GFXON this is a really slow CPU and we should always clear the FIFO between reads.
#define GMOUSE_STMPE811_SLOW_CPU GFXOFF
// Slave address
#define STMPE811_ADDR (0x82 >> 1)
// Maximum timeout
#define STMPE811_TIMEOUT 0x3000
static const I2CConfig i2ccfg = {
OPMODE_I2C,
200000, // Conservative please
FAST_DUTY_CYCLE_2,
};
static gBool init_board(GMouse* m, unsigned driverinstance) {
(void) m;
// This board only supports one touch panel
if (driverinstance)
return gFalse;
palSetPadMode(GPIOC, 13, PAL_MODE_INPUT | PAL_STM32_PUDR_FLOATING); /* TP IRQ */
palSetPadMode(GPIOB, 8, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN); /* SCL */
palSetPadMode(GPIOB, 9, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN); /* SDA */
i2cStart(&I2CD1, &i2ccfg);
return gTrue;
}
#if GMOUSE_STMPE811_GPIO_IRQPIN
static gBool getpin_irq(GMouse* m) {
(void) m;
return !palReadPad(GPIOC, 13);
}
#endif
static GFXINLINE void aquire_bus(GMouse* m) {
(void) m;
}
static GFXINLINE void release_bus(GMouse* m) {
(void) m;
}
static void write_reg(GMouse* m, gU8 reg, gU8 val) {
gU8 txbuf[2];
(void) m;
txbuf[0] = reg;
txbuf[1] = val;
i2cAcquireBus(&I2CD1);
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 2, 0, 0, MS2ST(STMPE811_TIMEOUT));
i2cReleaseBus(&I2CD1);
}
static gU8 read_byte(GMouse* m, gU8 reg) {
gU8 rxbuf[1];
(void) m;
rxbuf[0] = 0;
i2cAcquireBus(&I2CD1);
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, ®, 1, rxbuf, 1, MS2ST(STMPE811_TIMEOUT));
i2cReleaseBus(&I2CD1);
return rxbuf[0];
}
static gU16 read_word(GMouse* m, gU8 reg) {
gU8 rxbuf[2];
(void) m;
rxbuf[0] = 0;
rxbuf[1] = 0;
i2cAcquireBus(&I2CD1);
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, ®, 1, rxbuf, 2, MS2ST(STMPE811_TIMEOUT));
i2cReleaseBus(&I2CD1);
return (((gU16)rxbuf[0]) << 8) | rxbuf[1];
}
#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
|
