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Diffstat (limited to 'libmaple/stm32f2/gpio.c')
| -rw-r--r-- | libmaple/stm32f2/gpio.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/libmaple/stm32f2/gpio.c b/libmaple/stm32f2/gpio.c deleted file mode 100644 index a26edaa..0000000 --- a/libmaple/stm32f2/gpio.c +++ /dev/null @@ -1,194 +0,0 @@ -/****************************************************************************** - * The MIT License - * - * Copyright (c) 2011 LeafLabs, LLC. - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, - * modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - *****************************************************************************/ - -/** - * @file libmaple/stm32f2/gpio.c - * @brief STM32F2 GPIO. - */ - -#include <libmaple/gpio.h> -#include <libmaple/rcc.h> -#include <libmaple/bitband.h> - -/* - * GPIO devices - */ - -gpio_dev gpioa = { - .regs = GPIOA_BASE, - .clk_id = RCC_GPIOA, - .exti_port = EXTI_PA, -}; -/** GPIO port A device. */ -gpio_dev* const GPIOA = &gpioa; - -gpio_dev gpiob = { - .regs = GPIOB_BASE, - .clk_id = RCC_GPIOB, - .exti_port = EXTI_PB, -}; -/** GPIO port B device. */ -gpio_dev* const GPIOB = &gpiob; - -gpio_dev gpioc = { - .regs = GPIOC_BASE, - .clk_id = RCC_GPIOC, - .exti_port = EXTI_PC, -}; -/** GPIO port C device. */ -gpio_dev* const GPIOC = &gpioc; - -gpio_dev gpiod = { - .regs = GPIOD_BASE, - .clk_id = RCC_GPIOD, - .exti_port = EXTI_PD, -}; -/** GPIO port D device. */ -gpio_dev* const GPIOD = &gpiod; - -gpio_dev gpioe = { - .regs = GPIOE_BASE, - .clk_id = RCC_GPIOE, - .exti_port = EXTI_PE, -}; -/** GPIO port E device. */ -gpio_dev* const GPIOE = &gpioe; - -gpio_dev gpiof = { - .regs = GPIOF_BASE, - .clk_id = RCC_GPIOF, - .exti_port = EXTI_PF, -}; -/** GPIO port F device. */ -gpio_dev* const GPIOF = &gpiof; - -gpio_dev gpiog = { - .regs = GPIOG_BASE, - .clk_id = RCC_GPIOG, - .exti_port = EXTI_PG, -}; -/** GPIO port G device. */ -gpio_dev* const GPIOG = &gpiog; - -gpio_dev gpioh = { - .regs = GPIOH_BASE, - .clk_id = RCC_GPIOH, - .exti_port = EXTI_PH, -}; -/** GPIO port G device. */ -gpio_dev* const GPIOH = &gpioh; - -gpio_dev gpioi = { - .regs = GPIOI_BASE, - .clk_id = RCC_GPIOI, - .exti_port = EXTI_PI, -}; -/** GPIO port G device. */ -gpio_dev* const GPIOI = &gpioi; - -/* - * GPIO routines - */ - -/** - * Initialize and reset all available GPIO devices. - */ -void gpio_init_all(void) { - gpio_init(GPIOA); - gpio_init(GPIOB); - gpio_init(GPIOC); - gpio_init(GPIOD); - gpio_init(GPIOE); - gpio_init(GPIOF); - gpio_init(GPIOG); - gpio_init(GPIOH); - gpio_init(GPIOI); -} - -/** - * @brief Set the mode of a GPIO pin. - * @param dev GPIO device. - * @param bit Bit on dev whose mode to set, 0--15. - * @param mode Mode to set the pin to. - * @param flags Flags to modify basic mode configuration - */ -void gpio_set_modef(gpio_dev *dev, - uint8 bit, - gpio_pin_mode mode, - unsigned flags) { - gpio_reg_map *regs = dev->regs; - unsigned shift = bit * 2; - uint32 tmp; - - /* Mode */ - tmp = regs->MODER; - tmp &= ~(0x3 << shift); - tmp |= mode << shift; - regs->MODER = tmp; - - /* Output type */ - bb_peri_set_bit(®s->OTYPER, bit, flags & 0x1); - - /* Speed */ - tmp = regs->OSPEEDR; - tmp &= ~(0x3 << shift); - tmp |= ((flags >> 1) & 0x3) << shift; - regs->OSPEEDR = tmp; - - /* Pull-up/pull-down */ - tmp = regs->PUPDR; - tmp &= ~(0x3 << shift); - tmp |= ((flags >> 3) & 0x3) << shift; - regs->PUPDR = tmp; -} - -/** - * @brief Set a pin's alternate function. - * - * The pin must have its mode set to GPIO_MODE_AF for this to take - * effect. - * - * @param dev Device whose pin to configure. - * @param bit Pin whose alternate function to set. - * @param af Alternate function to use for pin. - * @see gpio_set_modef() - */ -void gpio_set_af(gpio_dev *dev, uint8 bit, gpio_af af) { - __io uint32 *afr; - unsigned shift; - uint32 tmp; - if (bit >= 8) { - afr = &dev->regs->AFRH; - shift = 4 * (bit - 8); - } else{ - afr = &dev->regs->AFRL; - shift = 4 * bit; - } - tmp = *afr; - tmp &= ~(0xF << shift); - tmp |= (af << shift); - *afr = tmp; -} |