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
|
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Daniel Campora
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdint.h>
#include "mpconfigboard.h"
#include "inc/hw_types.h"
#include "inc/hw_gpio.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "rom_map.h"
#include "pin.h"
#include "prcm.h"
#include "gpio.h"
#include "antenna.h"
#if MICROPY_HW_ANTENNA_DIVERSITY
/******************************************************************************
DEFINE CONSTANTS
******************************************************************************/
#define REG_PAD_CONFIG_26 (0x4402E108)
#define REG_PAD_CONFIG_27 (0x4402E10C)
/******************************************************************************
DEFINE PRIVATE DATA
******************************************************************************/
static antenna_type_t antenna_type_selected = ANTENNA_TYPE_INTERNAL;
/******************************************************************************
DEFINE PUBLIC FUNCTIONS
******************************************************************************/
void antenna_init0(void) {
// enable the peripheral clock and set the gpio direction for
// both antenna 1 and antenna 2 pins
MAP_PRCMPeripheralClkEnable(PRCM_GPIOA3, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
MAP_GPIODirModeSet(GPIOA3_BASE, 0x0C, GPIO_DIR_MODE_OUT);
// configure antenna 1 pin type and strength
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~(PAD_STRENGTH_MASK | PAD_TYPE_MASK)) | (0x00000020 | 0x00000000));
// set the mode
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~PAD_MODE_MASK) | 0x00000000) & ~(3 << 10);
// set the direction
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~0xC00) | 0x00000800);
// configure antenna 2 pin type and strength
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~(PAD_STRENGTH_MASK | PAD_TYPE_MASK)) | (0x00000020 | 0x00000000));
// set the mode
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~PAD_MODE_MASK) | 0x00000000) & ~(3 << 10);
// set the direction
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~0xC00) | 0x00000800);
// select the currently active antenna
antenna_select(antenna_type_selected);
}
void antenna_select (antenna_type_t _antenna) {
if (_antenna == ANTENNA_TYPE_INTERNAL) {
MAP_GPIOPinWrite(GPIOA3_BASE, 0x0C, 0x04);
// also configure the pull-up and pull-down accordingly
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~PAD_TYPE_MASK)) | PIN_TYPE_STD_PU;
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~PAD_TYPE_MASK)) | PIN_TYPE_STD_PD;
} else {
MAP_GPIOPinWrite(GPIOA3_BASE, 0x0C, 0x08);
// also configure the pull-up and pull-down accordingly
HWREG(REG_PAD_CONFIG_26) = ((HWREG(REG_PAD_CONFIG_26) & ~PAD_TYPE_MASK)) | PIN_TYPE_STD_PD;
HWREG(REG_PAD_CONFIG_27) = ((HWREG(REG_PAD_CONFIG_27) & ~PAD_TYPE_MASK)) | PIN_TYPE_STD_PU;
}
antenna_type_selected = _antenna;
}
#endif
|
