From b3a710b0bcc8e765b32cc255dc5047323933d22e Mon Sep 17 00:00:00 2001 From: Stephen Caudle Date: Fri, 28 Oct 2011 15:44:29 -0400 Subject: Rename stm32 lib folders to be consistent with include --- lib/stm32f2/gpio.c | 139 ----------------------------------------------------- 1 file changed, 139 deletions(-) delete mode 100644 lib/stm32f2/gpio.c (limited to 'lib/stm32f2/gpio.c') diff --git a/lib/stm32f2/gpio.c b/lib/stm32f2/gpio.c deleted file mode 100644 index 6e1ef08..0000000 --- a/lib/stm32f2/gpio.c +++ /dev/null @@ -1,139 +0,0 @@ -/* - * This file is part of the libopencm3 project. - * - * Copyright (C) 2011 Fergus Noble - * - * 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 3 of the License, 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. If not, see . - */ - -#include - -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) = GPIO_IDR(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. */ - - /* If (reg32 & GPIO_LCKK) is true, the lock is now active. */ -} -- cgit v1.2.3