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