| /**************************************************************************** |
| * arch/arm/src/stm32/stm32_gpio.h |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| * |
| ****************************************************************************/ |
| |
| #ifndef __ARCH_ARM_SRC_STM32_STM32_GPIO_H |
| #define __ARCH_ARM_SRC_STM32_STM32_GPIO_H |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #ifndef __ASSEMBLY__ |
| # include <stdint.h> |
| # include <stdbool.h> |
| #endif |
| |
| #include <nuttx/irq.h> |
| |
| #include "chip.h" |
| |
| #if defined(CONFIG_STM32_STM32L15XX) |
| # include "hardware/stm32l15xxx_gpio.h" |
| #elif defined(CONFIG_STM32_STM32F10XX) |
| # include "hardware/stm32f10xxx_gpio.h" |
| #elif defined(CONFIG_STM32_STM32F20XX) |
| # include "hardware/stm32f20xxx_gpio.h" |
| #elif defined(CONFIG_STM32_STM32F30XX) || defined(CONFIG_STM32_STM32F33XX) || \ |
| defined(CONFIG_STM32_STM32F37XX) |
| # include "hardware/stm32f30xxx_gpio.h" |
| #elif defined(CONFIG_STM32_STM32F4XXX) |
| # include "hardware/stm32f40xxx_gpio.h" |
| #elif defined(CONFIG_STM32_STM32G4XXX) |
| # include "hardware/stm32g4xxxx_gpio.h" |
| #else |
| # error "Unrecognized STM32 chip" |
| #endif |
| |
| /**************************************************************************** |
| * Pre-Processor Declarations |
| ****************************************************************************/ |
| |
| /* Bit-encoded input to stm32_configgpio() */ |
| |
| #if defined(CONFIG_STM32_STM32F10XX) |
| |
| /* 16-bit Encoding: |
| * |
| * 1111 1100 0000 0000 |
| * 5432 1098 7654 3210 |
| * ---- ---- ---- ---- |
| * OFFS SX.. VPPP BBBB |
| */ |
| |
| /* Output mode: |
| * |
| * 1111 1100 0000 0000 |
| * 5432 1098 7654 3210 |
| * ---- ---- ---- ---- |
| * O... .... .... .... |
| */ |
| |
| #define GPIO_INPUT (1 << 15) /* Bit 15: 1=Input mode */ |
| #define GPIO_OUTPUT (0) /* 0=Output or alternate function */ |
| #define GPIO_ALT (0) |
| |
| /* If the pin is a GPIO digital output, then this identifies the initial |
| * output value. If the pin is an input, this bit is overloaded to |
| * provide the qualifier to\ distinguish input pull-up and -down: |
| * |
| * 1111 1100 0000 0000 |
| * 5432 1098 7654 3210 |
| * ---- ---- ---- ---- |
| * .... .... V... .... |
| */ |
| |
| #define GPIO_OUTPUT_SET (1 << 7) /* Bit 7: If output, initial value of output */ |
| #define GPIO_OUTPUT_CLEAR (0) |
| |
| /* These bits set the primary function of the pin: |
| * |
| * 1111 1100 0000 0000 |
| * 5432 1098 7654 3210 |
| * ---- ---- ---- ---- |
| * .FF. .... .... .... |
| */ |
| |
| #define GPIO_CNF_SHIFT 13 /* Bits 13-14: GPIO function */ |
| #define GPIO_CNF_MASK (3 << GPIO_CNF_SHIFT) |
| |
| # define GPIO_CNF_ANALOGIN (0 << GPIO_CNF_SHIFT) /* Analog input */ |
| # define GPIO_CNF_INFLOAT (1 << GPIO_CNF_SHIFT) /* Input floating */ |
| # define GPIO_CNF_INPULLUD (2 << GPIO_CNF_SHIFT) /* Input pull-up/down general bit, since up is composed of two parts */ |
| # define GPIO_CNF_INPULLDWN (2 << GPIO_CNF_SHIFT) /* Input pull-down */ |
| # define GPIO_CNF_INPULLUP ((2 << GPIO_CNF_SHIFT) \ |
| | GPIO_OUTPUT_SET) /* Input pull-up */ |
| |
| # define GPIO_CNF_OUTPP (0 << GPIO_CNF_SHIFT) /* Output push-pull */ |
| # define GPIO_CNF_OUTOD (1 << GPIO_CNF_SHIFT) /* Output open-drain */ |
| # define GPIO_CNF_AFPP (2 << GPIO_CNF_SHIFT) /* Alternate function push-pull */ |
| # define GPIO_CNF_AFOD (3 << GPIO_CNF_SHIFT) /* Alternate function open-drain */ |
| |
| /* Maximum frequency selection: |
| * |
| * 1111 1100 0000 0000 |
| * 5432 1098 7654 3210 |
| * ---- ---- ---- ---- |
| * ...S S... .... .... |
| */ |
| |
| #define GPIO_MODE_SHIFT 11 /* Bits 11-12: GPIO frequency selection */ |
| #define GPIO_MODE_MASK (3 << GPIO_MODE_SHIFT) |
| # define GPIO_MODE_INPUT (0 << GPIO_MODE_SHIFT) /* Input mode (reset state) */ |
| # define GPIO_MODE_10MHz (1 << GPIO_MODE_SHIFT) /* Output mode, max speed 10 MHz */ |
| # define GPIO_MODE_2MHz (2 << GPIO_MODE_SHIFT) /* Output mode, max speed 2 MHz */ |
| # define GPIO_MODE_50MHz (3 << GPIO_MODE_SHIFT) /* Output mode, max speed 50 MHz */ |
| |
| #define GPIO_ADJUST_MODE(p, m) (((p) & ~GPIO_MODE_MASK) | (m)) |
| |
| /* External interrupt selection (GPIO inputs only): |
| * |
| * 1111 1100 0000 0000 |
| * 5432 1098 7654 3210 |
| * ---- ---- ---- ---- |
| * .... .X.. .... .... |
| */ |
| |
| #define GPIO_EXTI (1 << 10) /* Bit 10: Configure as EXTI interrupt */ |
| |
| /* This identifies the GPIO port: |
| * |
| * 1111 1100 0000 0000 |
| * 5432 1098 7654 3210 |
| * ---- ---- ---- ---- |
| * .... .... .PPP .... |
| */ |
| |
| #define GPIO_PORT_SHIFT 4 /* Bit 4-6: Port number */ |
| #define GPIO_PORT_MASK (7 << GPIO_PORT_SHIFT) |
| # define GPIO_PORTA (0 << GPIO_PORT_SHIFT) /* GPIOA */ |
| # define GPIO_PORTB (1 << GPIO_PORT_SHIFT) /* GPIOB */ |
| # define GPIO_PORTC (2 << GPIO_PORT_SHIFT) /* GPIOC */ |
| # define GPIO_PORTD (3 << GPIO_PORT_SHIFT) /* GPIOD */ |
| # define GPIO_PORTE (4 << GPIO_PORT_SHIFT) /* GPIOE */ |
| # define GPIO_PORTF (5 << GPIO_PORT_SHIFT) /* GPIOF */ |
| # define GPIO_PORTG (6 << GPIO_PORT_SHIFT) /* GPIOG */ |
| |
| /* This identifies the bit in the port: |
| * |
| * 1111 1100 0000 0000 |
| * 5432 1098 7654 3210 |
| * ---- ---- ---- ---- |
| * .... .... .... BBBB |
| */ |
| |
| #define GPIO_PIN_SHIFT 0 /* Bits 0-3: GPIO number: 0-15 */ |
| #define GPIO_PIN_MASK (15 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN0 (0 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN1 (1 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN2 (2 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN3 (3 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN4 (4 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN5 (5 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN6 (6 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN7 (7 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN8 (8 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN9 (9 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN10 (10 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN11 (11 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN12 (12 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN13 (13 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN14 (14 << GPIO_PIN_SHIFT) |
| #define GPIO_PIN15 (15 << GPIO_PIN_SHIFT) |
| |
| #elif defined(CONFIG_STM32_STM32L15XX) || defined(CONFIG_STM32_STM32F20XX) || \ |
| defined(CONFIG_STM32_STM32F30XX) || defined(CONFIG_STM32_STM32F33XX) || \ |
| defined(CONFIG_STM32_STM32F37XX) || defined(CONFIG_STM32_STM32F4XXX) || \ |
| defined(CONFIG_STM32_STM32G4XXX) |
| /* Each port bit of the general-purpose I/O (GPIO) ports can be |
| * individually configured by software in several modes: |
| * |
| * - Input floating |
| * - Input pull-up |
| * - Input-pull-down |
| * - Output open-drain with pull-up or pull-down capability |
| * - Output push-pull with pull-up or pull-down capability |
| * - Alternate function push-pull with pull-up or pull-down capability |
| * - Alternate function open-drain with pull-up or pull-down capability |
| * - Analog |
| * |
| * 20-bit Encoding: 1111 1111 1100 0000 0000 |
| * 9876 5432 1098 7654 3210 |
| * ---- ---- ---- ---- ---- |
| * Inputs: MMUU .... ...X PPPP BBBB |
| * Outputs: MMUU .... FFOV PPPP BBBB |
| * Alternate Functions: MMUU AAAA FFO. PPPP BBBB |
| * Analog: MM.. .... .... PPPP BBBB |
| */ |
| |
| /* Mode: |
| * |
| * 1111 1111 1100 0000 0000 |
| * 9876 5432 1098 7654 3210 |
| * ---- ---- ---- ---- ---- |
| * MM.. .... .... .... .... |
| */ |
| |
| #define GPIO_MODE_SHIFT (18) /* Bits 18-19: GPIO port mode */ |
| #define GPIO_MODE_MASK (3 << GPIO_MODE_SHIFT) |
| # define GPIO_INPUT (0 << GPIO_MODE_SHIFT) /* Input mode */ |
| # define GPIO_OUTPUT (1 << GPIO_MODE_SHIFT) /* General purpose output mode */ |
| # define GPIO_ALT (2 << GPIO_MODE_SHIFT) /* Alternate function mode */ |
| # define GPIO_ANALOG (3 << GPIO_MODE_SHIFT) /* Analog mode */ |
| |
| /* Input/output pull-ups/downs (not used with analog): |
| * |
| * 1111 1111 1100 0000 0000 |
| * 9876 5432 1098 7654 3210 |
| * ---- ---- ---- ---- ---- |
| * ..UU .... .... .... .... |
| */ |
| |
| #define GPIO_PUPD_SHIFT (16) /* Bits 16-17: Pull-up/pull down */ |
| #define GPIO_PUPD_MASK (3 << GPIO_PUPD_SHIFT) |
| # define GPIO_FLOAT (0 << GPIO_PUPD_SHIFT) /* No pull-up, pull-down */ |
| # define GPIO_PULLUP (1 << GPIO_PUPD_SHIFT) /* Pull-up */ |
| # define GPIO_PULLDOWN (2 << GPIO_PUPD_SHIFT) /* Pull-down */ |
| |
| /* Alternate Functions: |
| * |
| * 1111 1111 1100 0000 0000 |
| * 9876 5432 1098 7654 3210 |
| * ---- ---- ---- ---- ---- |
| * .... AAAA .... .... .... |
| */ |
| |
| #define GPIO_AF_SHIFT (12) /* Bits 12-15: Alternate function */ |
| #define GPIO_AF_MASK (15 << GPIO_AF_SHIFT) |
| # define GPIO_AF(n) ((n) << GPIO_AF_SHIFT) |
| # define GPIO_AF0 (0 << GPIO_AF_SHIFT) |
| # define GPIO_AF1 (1 << GPIO_AF_SHIFT) |
| # define GPIO_AF2 (2 << GPIO_AF_SHIFT) |
| # define GPIO_AF3 (3 << GPIO_AF_SHIFT) |
| # define GPIO_AF4 (4 << GPIO_AF_SHIFT) |
| # define GPIO_AF5 (5 << GPIO_AF_SHIFT) |
| # define GPIO_AF6 (6 << GPIO_AF_SHIFT) |
| # define GPIO_AF7 (7 << GPIO_AF_SHIFT) |
| # define GPIO_AF8 (8 << GPIO_AF_SHIFT) |
| # define GPIO_AF9 (9 << GPIO_AF_SHIFT) |
| # define GPIO_AF10 (10 << GPIO_AF_SHIFT) |
| # define GPIO_AF11 (11 << GPIO_AF_SHIFT) |
| # define GPIO_AF12 (12 << GPIO_AF_SHIFT) |
| # define GPIO_AF13 (13 << GPIO_AF_SHIFT) |
| # define GPIO_AF14 (14 << GPIO_AF_SHIFT) |
| # define GPIO_AF15 (15 << GPIO_AF_SHIFT) |
| |
| /* Output/Alt function frequency selection: |
| * |
| * 1111 1111 1100 0000 0000 |
| * 9876 5432 1098 7654 3210 |
| * ---- ---- ---- ---- ---- |
| * .... .... FF.. .... .... |
| */ |
| |
| #define GPIO_SPEED_SHIFT (10) /* Bits 10-11: GPIO frequency selection */ |
| #define GPIO_SPEED_MASK (3 << GPIO_SPEED_SHIFT) |
| #if defined(CONFIG_STM32_STM32L15XX) |
| # define GPIO_SPEED_400KHz (0 << GPIO_SPEED_SHIFT) /* 400 kHz Very low speed output */ |
| # define GPIO_SPEED_2MHz (1 << GPIO_SPEED_SHIFT) /* 2 MHz Low speed output */ |
| # define GPIO_SPEED_10MHz (2 << GPIO_SPEED_SHIFT) /* 10 MHz Medium speed output */ |
| # define GPIO_SPEED_40MHz (3 << GPIO_SPEED_SHIFT) /* 40 MHz High speed output */ |
| #elif defined(CONFIG_STM32_STM32G4XXX) /* With C=50pF, 2.7<VDD<3.6, DS12288 Rev2 Table 59 */ |
| # define GPIO_SPEED_5MHz (0 << GPIO_SPEED_SHIFT) /* 5 MHz Low speed output */ |
| # define GPIO_SPEED_25MHz (1 << GPIO_SPEED_SHIFT) /* 25 MHz Medium speed output */ |
| # define GPIO_SPEED_50MHz (2 << GPIO_SPEED_SHIFT) /* 50 MHz Fast speed output */ |
| # define GPIO_SPEED_120MHz (3 << GPIO_SPEED_SHIFT) /* 120 MHz High speed output */ |
| #else |
| # define GPIO_SPEED_2MHz (0 << GPIO_SPEED_SHIFT) /* 2 MHz Low speed output */ |
| # define GPIO_SPEED_25MHz (1 << GPIO_SPEED_SHIFT) /* 25 MHz Medium speed output */ |
| # define GPIO_SPEED_50MHz (2 << GPIO_SPEED_SHIFT) /* 50 MHz Fast speed output */ |
| #ifndef CONFIG_STM32_STM32F30XX |
| # define GPIO_SPEED_100MHz (3 << GPIO_SPEED_SHIFT) /* 100 MHz High speed output */ |
| #endif |
| #endif |
| |
| /* Output/Alt function type selection: |
| * |
| * 1111 1111 1100 0000 0000 |
| * 9876 5432 1098 7654 3210 |
| * ---- ---- ---- ---- ---- |
| * .... .... ..O. .... .... |
| */ |
| |
| #define GPIO_OPENDRAIN (1 << 9) /* Bit9: 1=Open-drain output */ |
| #define GPIO_PUSHPULL (0) /* Bit9: 0=Push-pull output */ |
| |
| /* If the pin is a GPIO digital output, then this identifies the initial |
| * output value. If the pin is an input, this bit is overloaded to |
| * provide the qualifier to distinguish input pull-up and -down: |
| * |
| * 1111 1111 1100 0000 0000 |
| * 9876 5432 1098 7654 3210 |
| * ---- ---- ---- ---- ---- |
| * .... .... ...V .... .... |
| */ |
| |
| #define GPIO_OUTPUT_SET (1 << 8) /* Bit 8: If output, initial value of output */ |
| #define GPIO_OUTPUT_CLEAR (0) |
| |
| /* External interrupt selection (GPIO inputs only): |
| * |
| * 1111 1111 1100 0000 0000 |
| * 9876 5432 1098 7654 3210 |
| * ---- ---- ---- ---- ---- |
| * .... .... ...X .... .... |
| */ |
| |
| #define GPIO_EXTI (1 << 8) /* Bit 8: Configure as EXTI interrupt */ |
| |
| /* This identifies the GPIO port: |
| * |
| * 1111 1111 1100 0000 0000 |
| * 9876 5432 1098 7654 3210 |
| * ---- ---- ---- ---- ---- |
| * .... .... .... PPPP .... |
| */ |
| |
| #define GPIO_PORT_SHIFT (4) /* Bit 4-7: Port number */ |
| #define GPIO_PORT_MASK (15 << GPIO_PORT_SHIFT) |
| # define GPIO_PORTA (0 << GPIO_PORT_SHIFT) /* GPIOA */ |
| # define GPIO_PORTB (1 << GPIO_PORT_SHIFT) /* GPIOB */ |
| # define GPIO_PORTC (2 << GPIO_PORT_SHIFT) /* GPIOC */ |
| # define GPIO_PORTD (3 << GPIO_PORT_SHIFT) /* GPIOD */ |
| # define GPIO_PORTE (4 << GPIO_PORT_SHIFT) /* GPIOE */ |
| #if defined (CONFIG_STM32_STM32L15XX) |
| # define GPIO_PORTH (5 << GPIO_PORT_SHIFT) /* GPIOH */ |
| # define GPIO_PORTF (6 << GPIO_PORT_SHIFT) /* GPIOF */ |
| # define GPIO_PORTG (7 << GPIO_PORT_SHIFT) /* GPIOG */ |
| #else |
| # define GPIO_PORTF (5 << GPIO_PORT_SHIFT) /* GPIOF */ |
| # define GPIO_PORTG (6 << GPIO_PORT_SHIFT) /* GPIOG */ |
| # define GPIO_PORTH (7 << GPIO_PORT_SHIFT) /* GPIOH */ |
| # define GPIO_PORTI (8 << GPIO_PORT_SHIFT) /* GPIOI */ |
| # define GPIO_PORTJ (9 << GPIO_PORT_SHIFT) /* GPIOJ */ |
| # define GPIO_PORTK (10 << GPIO_PORT_SHIFT) /* GPIOK */ |
| #endif |
| |
| /* This identifies the bit in the port: |
| * |
| * 1111 1111 1100 0000 0000 |
| * 9876 5432 1098 7654 3210 |
| * ---- ---- ---- ---- ---- |
| * .... .... .... .... BBBB |
| */ |
| |
| #define GPIO_PIN_SHIFT (0) /* Bits 0-3: GPIO number: 0-15 */ |
| #define GPIO_PIN_MASK (15 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN0 (0 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN1 (1 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN2 (2 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN3 (3 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN4 (4 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN5 (5 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN6 (6 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN7 (7 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN8 (8 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN9 (9 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN10 (10 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN11 (11 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN12 (12 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN13 (13 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN14 (14 << GPIO_PIN_SHIFT) |
| # define GPIO_PIN15 (15 << GPIO_PIN_SHIFT) |
| |
| #else |
| # error "Unrecognized STM32 chip" |
| #endif |
| |
| /**************************************************************************** |
| * Public Data |
| ****************************************************************************/ |
| |
| #ifndef __ASSEMBLY__ |
| |
| #undef EXTERN |
| #if defined(__cplusplus) |
| #define EXTERN extern "C" |
| extern "C" |
| { |
| #else |
| #define EXTERN extern |
| #endif |
| |
| /* Base addresses for each GPIO block */ |
| |
| EXTERN const uint32_t g_gpiobase[STM32_NGPIO_PORTS]; |
| |
| /**************************************************************************** |
| * Public Function Prototypes |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: stm32_configgpio |
| * |
| * Description: |
| * Configure a GPIO pin based on bit-encoded description of the pin. |
| * Once it is configured as Alternative (GPIO_ALT|GPIO_CNF_AFPP|...) |
| * function, it must be unconfigured with stm32_unconfiggpio() with |
| * the same cfgset first before it can be set to non-alternative function. |
| * |
| * Returned Value: |
| * OK on success |
| * ERROR on invalid port, or when pin is locked as ALT function. |
| * |
| ****************************************************************************/ |
| |
| int stm32_configgpio(uint32_t cfgset); |
| |
| /**************************************************************************** |
| * Name: stm32_unconfiggpio |
| * |
| * Description: |
| * Unconfigure a GPIO pin based on bit-encoded description of the pin, set |
| * it into default HiZ state (and possibly mark it's unused) and unlock it |
| * whether it was previously selected as alternative function |
| * (GPIO_ALT|GPIO_CNF_AFPP|...). |
| * |
| * This is a safety function and prevents hardware from shocks, as |
| * unexpected write to the Timer Channel Output GPIO to fixed '1' or '0' |
| * while it should operate in PWM mode could produce excessive on-board |
| * currents and trigger over-current/alarm function. |
| * |
| * Returned Value: |
| * OK on success |
| * ERROR on invalid port |
| * |
| ****************************************************************************/ |
| |
| int stm32_unconfiggpio(uint32_t cfgset); |
| |
| /**************************************************************************** |
| * Name: stm32_gpiowrite |
| * |
| * Description: |
| * Write one or zero to the selected GPIO pin |
| * |
| ****************************************************************************/ |
| |
| void stm32_gpiowrite(uint32_t pinset, bool value); |
| |
| /**************************************************************************** |
| * Name: stm32_gpioread |
| * |
| * Description: |
| * Read one or zero from the selected GPIO pin |
| * |
| ****************************************************************************/ |
| |
| bool stm32_gpioread(uint32_t pinset); |
| |
| /**************************************************************************** |
| * Name: stm32_iocompensation |
| * |
| * Description: |
| * Enable I/O compensation. |
| * |
| * By default the I/O compensation cell is not used. However when the I/O |
| * output buffer speed is configured in 50 MHz or 100 MHz mode, it is |
| * recommended to use the compensation cell for slew rate control on I/O |
| * tf(IO)out)/tr(IO)out commutation to reduce the I/O noise on power |
| * supply. |
| * |
| * The I/O compensation cell can be used only when the supply voltage |
| * ranges from 2.4 to 3.6 V. |
| * |
| * Input Parameters: |
| * None |
| * |
| * Returned Value: |
| * None |
| * |
| ****************************************************************************/ |
| |
| #ifdef CONFIG_STM32_HAVE_IOCOMPENSATION |
| void stm32_iocompensation(void); |
| #endif |
| |
| /**************************************************************************** |
| * Name: stm32_gpiosetevent |
| * |
| * Description: |
| * Sets/clears GPIO based event and interrupt triggers. |
| * |
| * Input Parameters: |
| * - pinset: gpio pin configuration |
| * - rising/falling edge: enables |
| * - event: generate event when set |
| * - func: when non-NULL, generate interrupt |
| * - arg: Argument passed to the interrupt callback |
| * |
| * Returned Value: |
| * Zero (OK) on success; a negated errno value on failure indicating the |
| * nature of the failure. |
| * |
| ****************************************************************************/ |
| |
| int stm32_gpiosetevent(uint32_t pinset, bool risingedge, bool fallingedge, |
| bool event, xcpt_t func, void *arg); |
| |
| /**************************************************************************** |
| * Function: stm32_dumpgpio |
| * |
| * Description: |
| * Dump all GPIO registers associated with the provided base address |
| * |
| ****************************************************************************/ |
| |
| #ifdef CONFIG_DEBUG_FEATURES |
| int stm32_dumpgpio(uint32_t pinset, const char *msg); |
| #else |
| # define stm32_dumpgpio(p,m) |
| #endif |
| |
| /**************************************************************************** |
| * Function: stm32_gpioinit |
| * |
| * Description: |
| * Based on configuration within the .config file, it does: |
| * - Remaps positions of alternative functions. |
| * |
| * Typically called from stm32_start(). |
| * |
| ****************************************************************************/ |
| |
| void stm32_gpioinit(void); |
| |
| #undef EXTERN |
| #if defined(__cplusplus) |
| } |
| #endif |
| |
| #endif /* __ASSEMBLY__ */ |
| #endif /* __ARCH_ARM_SRC_STM32_STM32_GPIO_H */ |
