From 7eee145365134586ec2f67d87f3a4edd81cff3c2 Mon Sep 17 00:00:00 2001 From: Jared Boone Date: Thu, 13 Nov 2014 16:12:54 -0800 Subject: [PATCH 44/68] Add "pin" interface to abstract GPIO pins. --- firmware/common/pin.h | 37 +++++++++++++++++++++++++++++++ firmware/common/pin_lpc.c | 52 ++++++++++++++++++++++++++++++++++++++++++++ firmware/common/pin_lpc.h | 41 ++++++++++++++++++++++++++++++++++ firmware/hackrf-common.cmake | 1 + 4 files changed, 131 insertions(+) create mode 100644 firmware/common/pin.h create mode 100644 firmware/common/pin_lpc.c create mode 100644 firmware/common/pin_lpc.h --- /dev/null +++ b/firmware/common/pin.h @@ -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 + +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__*/ --- /dev/null +++ b/firmware/common/pin_lpc.c @@ -0,0 +1,52 @@ +/* + * 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 + +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); +} --- /dev/null +++ b/firmware/common/pin_lpc.h @@ -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 + +#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__*/ --- a/firmware/hackrf-common.cmake +++ b/firmware/hackrf-common.cmake @@ -144,6 +144,7 @@ ${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 )