diff options
Diffstat (limited to 'src/lib/gpio.h')
| -rw-r--r-- | src/lib/gpio.h | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/src/lib/gpio.h b/src/lib/gpio.h deleted file mode 100644 index 5e7cf29..0000000 --- a/src/lib/gpio.h +++ /dev/null @@ -1,97 +0,0 @@ -/* ***************************************************************************** - * 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 <http://www.gnu.org/licenses/>. - * - * Created: 12/18/09 02:36:01 - * Copyright (c) 2009 Perry L. Hung. All rights reserved. - * - * ****************************************************************************/ - -/** - * @file gpio.h - * - * @brief GPIO prototypes, defines, and inlined access functions - */ - -#ifndef _GPIO_H -#define _GPIO_H - -/* Each of the GPIO port bits can be in the following modes (STM32 138/995): - * Input floating - * Input pull-up - * Input pull-down - * Analog Input - * Output open-drain - * Output push-pull - * Alternate function push-pull - * Alternate function open-drain - * - * - After reset, the alternate functions are not active and IO prts - * are set to Input Floating mode */ - -#define GPIOA_BASE (GPIO_Port*)0x40010800 -#define GPIOB_BASE (GPIO_Port*)0x40010C00 -#define GPIOC_BASE (GPIO_Port*)0x40011000 -#define GPIOD_BASE (GPIO_Port*)0x40011400 - -/* Pin modes are set by [CNFx[1:0] : MODEx[1:0]] */ -#define GPIO_SPEED_50MHZ (0x3) // Max output speed 50 MHz -#define GPIO_MODE_OUTPUT_PP ((0x00 << 2) | GPIO_SPEED_50MHZ) -#define GPIO_MODE_OUTPUT_OD ((0x01 << 2) | GPIO_SPEED_50MHZ) - -#define GPIO_MODE_AF_OUTPUT_PP ((0x02 << 2) | GPIO_SPEED_50MHZ) -#define GPIO_MODE_AF_OUTPUT_OD ((0x03 << 2) | GPIO_SPEED_50MHZ) - -/* Note: mode bits must be set to zero for input mode */ -#define GPIO_MODE_INPUT_ANALOG (0x00 << 2) -#define GPIO_MODE_INPUT_FLOATING (0x01 << 2) -#define GPIO_MODE_INPUT_PD (0x02 << 2) -#define GPIO_MODE_INPUT_PU (0x02 << 2) - -typedef struct { - volatile uint32 CRL; // Port configuration register low - volatile uint32 CRH; // Port configuration register high - volatile uint32 IDR; // Port input data register - volatile uint32 ODR; // Port output data register - volatile uint32 BSRR; // Port bit set/reset register - volatile uint32 BRR; // Port bit reset register - volatile uint32 LCKR; // Port configuration lock register -} GPIO_Port; - -typedef volatile uint32* GPIOReg; - -#define POS_MASK(shift) (~(0xF << shift)) -#define POS(val) (val << 2) - -#ifdef __cplusplus -extern "C"{ -#endif - -void gpio_init(void); -void gpio_set_mode(GPIO_Port* port, uint8 gpio_pin, uint8 mode); - -static inline void gpio_write_bit(GPIO_Port *port, uint8 gpio_pin, uint8 val) { - if (val){ - port->BSRR = BIT(gpio_pin); - } else { - port->BRR = BIT(gpio_pin); - } -} - -#ifdef __cplusplus -} // extern "C" -#endif - - -#endif - |