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Add "pin" interface to abstract GPIO pins.

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This commit is contained in:
Jared Boone
2014-11-13 16:12:54 -08:00
parent 32aea14318
commit 7eee145365
4 changed files with 131 additions and 0 deletions
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37
firmware/common/pin.h Normal file
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@ -0,0 +1,37 @@
/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of HackRF.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef __PIN_H__
#define __PIN_H__
#include <stdbool.h>
typedef const struct pin_t* pin_t;
void pin_set(pin_t pin);
void pin_clear(pin_t pin);
void pin_toggle(pin_t pin);
void pin_output(pin_t pin);
void pin_input(pin_t pin);
void pin_write(pin_t pin, const bool value);
bool pin_read(pin_t pin);
#endif/*__PIN_H__*/

52
firmware/common/pin_lpc.c Normal file
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/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of HackRF.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "pin_lpc.h"
#include <libopencm3/lpc43xx/gpio.h>
void pin_set(pin_t pin) {
GPIO_SET(pin->gpio) = pin->mask;
}
void pin_clear(pin_t pin) {
GPIO_CLR(pin->gpio) = pin->mask;
}
void pin_toggle(pin_t pin) {
GPIO_NOT(pin->gpio) = pin->mask;
}
void pin_output(pin_t pin) {
GPIO_DIR(pin->gpio) |= pin->mask;
}
void pin_input(pin_t pin) {
GPIO_DIR(pin->gpio) &= ~pin->mask;
}
void pin_write(pin_t pin, const bool value) {
MMIO32(pin->gpio_w) = value;
}
bool pin_read(pin_t pin) {
return MMIO32(pin->gpio_w);
}

41
firmware/common/pin_lpc.h Normal file
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@ -0,0 +1,41 @@
/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of HackRF.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef __PIN_LPC_H__
#define __PIN_LPC_H__
#include <stdint.h>
#include "pin.h"
struct pin_t {
uint32_t gpio;
uint32_t mask;
uint32_t gpio_w;
};
#define PIN_LPC(_port_num, _pin_num) { \
.gpio = (GPIO0) + (_port_num) * 4, \
.mask = (1UL << (_pin_num)), \
.gpio_w = GPIO_PORT_BASE + 0x1000 + ((_port_num) * 0x80) + ((_pin_num) * 4), \
};
#endif/*__PIN_LPC_H__*/

1
firmware/hackrf-common.cmake
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@ -146,6 +146,7 @@ macro(DeclareTargets)
${PATH_HACKRF_FIRMWARE_COMMON}/w25q80bv_target.c
${PATH_HACKRF_FIRMWARE_COMMON}/spi_bus.c
${PATH_HACKRF_FIRMWARE_COMMON}/spi_ssp.c
${PATH_HACKRF_FIRMWARE_COMMON}/pin_lpc.c
m0_bin.s
)