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Diffstat (limited to 'lib/stm32/f4/gpio.c')
-rw-r--r--lib/stm32/f4/gpio.c142
1 files changed, 0 insertions, 142 deletions
diff --git a/lib/stm32/f4/gpio.c b/lib/stm32/f4/gpio.c
deleted file mode 100644
index 1d7739d..0000000
--- a/lib/stm32/f4/gpio.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- * This file is part of the libopencm3 project.
- *
- * Copyright (C) 2011 Fergus Noble <fergusnoble@gmail.com>
- *
- * This library is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This library 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 Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <libopencm3/stm32/f4/gpio.h>
-
-void gpio_mode_setup(u32 gpioport, u8 mode, u8 pull_up_down, u16 gpios)
-{
- u16 i;
- u32 moder, pupd;
-
- /*
- * We want to set the config only for the pins mentioned in gpios,
- * but keeping the others, so read out the actual config first.
- */
- moder = GPIO_MODER(gpioport);
- pupd = GPIO_PUPDR(gpioport);
-
- for (i = 0; i < 16; i++) {
- if (!((1 << i) & gpios))
- continue;
-
- moder &= ~GPIO_MODE_MASK(i);
- moder |= GPIO_MODE(i, mode);
- pupd &= ~GPIO_PUPD_MASK(i);
- pupd |= GPIO_PUPD(i, pull_up_down);
- }
-
- /* Set mode and pull up/down control registers. */
- GPIO_MODER(gpioport) = moder;
- GPIO_PUPDR(gpioport) = pupd;
-}
-
-void gpio_set_output_options(u32 gpioport, u8 otype, u8 speed, u16 gpios)
-{
- u16 i;
- u32 ospeedr;
-
- if (otype == 0x1)
- GPIO_OTYPER(gpioport) |= gpios;
- else
- GPIO_OTYPER(gpioport) &= ~gpios;
-
- ospeedr = GPIO_OSPEEDR(gpioport);
-
- for (i = 0; i < 16; i++) {
- if (!((1 << i) & gpios))
- continue;
- ospeedr &= ~GPIO_OSPEED_MASK(i);
- ospeedr |= GPIO_OSPEED(i, speed);
- }
-
- GPIO_OSPEEDR(gpioport) = ospeedr;
-}
-
-void gpio_set_af(u32 gpioport, u8 alt_func_num, u16 gpios)
-{
- u16 i;
- u32 afrl, afrh;
-
- afrl = GPIO_AFRL(gpioport);
- afrh = GPIO_AFRH(gpioport);
-
- for (i = 0; i < 8; i++) {
- if (!((1 << i) & gpios))
- continue;
- afrl &= ~GPIO_AFR_MASK(i);
- afrl |= GPIO_AFR(i, alt_func_num);
- }
-
- for (i = 8; i < 16; i++) {
- if (!((1 << i) & gpios))
- continue;
- afrl &= ~GPIO_AFR_MASK(i - 8);
- afrh |= GPIO_AFR(i - 8, alt_func_num);
- }
-
- GPIO_AFRL(gpioport) = afrl;
- GPIO_AFRH(gpioport) = afrh;
-}
-
-void gpio_set(u32 gpioport, u16 gpios)
-{
- GPIO_BSRR(gpioport) = gpios;
-}
-
-void gpio_clear(u32 gpioport, u16 gpios)
-{
- GPIO_BSRR(gpioport) = gpios << 16;
-}
-
-u16 gpio_get(u32 gpioport, u16 gpios)
-{
- return gpio_port_read(gpioport) & gpios;
-}
-
-void gpio_toggle(u32 gpioport, u16 gpios)
-{
- GPIO_ODR(gpioport) ^= gpios;
-}
-
-u16 gpio_port_read(u32 gpioport)
-{
- return (u16)GPIO_IDR(gpioport);
-}
-
-void gpio_port_write(u32 gpioport, u16 data)
-{
- GPIO_ODR(gpioport) = data;
-}
-
-void gpio_port_config_lock(u32 gpioport, u16 gpios)
-{
- u32 reg32;
-
- /* Special "Lock Key Writing Sequence", see datasheet. */
- GPIO_LCKR(gpioport) = GPIO_LCKK | gpios; /* Set LCKK. */
- GPIO_LCKR(gpioport) = ~GPIO_LCKK & gpios; /* Clear LCKK. */
- GPIO_LCKR(gpioport) = GPIO_LCKK | gpios; /* Set LCKK. */
- reg32 = GPIO_LCKR(gpioport); /* Read LCKK. */
- reg32 = GPIO_LCKR(gpioport); /* Read LCKK again. */
-
- /* Tell the compiler the variable is actually used. It will get optimized out anyways. */
- reg32 = reg32;
-
- /* If (reg32 & GPIO_LCKK) is true, the lock is now active. */
-}