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From 7eee145365134586ec2f67d87f3a4edd81cff3c2 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
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 <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__*/
--- /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 <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);
+}
--- /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 <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__*/
--- 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
)
|
