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
|
/*
* 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.org/license.html
*/
#ifndef _GINPUT_LLD_MOUSE_BOARD_H
#define _GINPUT_LLD_MOUSE_BOARD_H
static const SPIConfig spicfg = {
0,
GPIOC,
6,
/* SPI_CR1_BR_2 |*/ SPI_CR1_BR_1 | SPI_CR1_BR_0,
};
static GFXINLINE void init_board(void)
{
palSetPadMode(GPIOC, 6, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOC, 4, PAL_MODE_INPUT);
palSetPadMode(GPIOA, 5, PAL_MODE_ALTERNATE(5));
palSetPadMode(GPIOA, 6, PAL_MODE_ALTERNATE(5));
palSetPadMode(GPIOA, 7, PAL_MODE_ALTERNATE(5));
spiStart(&SPID1, &spicfg);
}
static GFXINLINE bool_t getpin_pressed(void)
{
return (!palReadPad(GPIOC, 4));
}
static GFXINLINE void aquire_bus(void)
{
spiAcquireBus(&SPID1);
palClearPad(GPIOC, 6);
}
static GFXINLINE void release_bus(void)
{
palSetPad(GPIOC, 6);
spiReleaseBus(&SPID1);
}
static GFXINLINE uint16_t read_value(uint16_t port)
{
static uint8_t txbuf[3] = {0};
static uint8_t rxbuf[3] = {0};
uint16_t ret;
txbuf[0] = port;
spiExchange(&SPID1, 3, txbuf, rxbuf);
ret = (rxbuf[1] << 5) | (rxbuf[2] >> 3);
return ret;
}
#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
|
