mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
143 lines
5.1 KiB
C
143 lines
5.1 KiB
C
// Copyright 2010-2016 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed 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 _ROM_GPIO_H_
|
|
#define _ROM_GPIO_H_
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
#include "esp_attr.h"
|
|
#include "soc/gpio_reg.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define GPIO_REG_READ(reg) READ_PERI_REG(reg)
|
|
#define GPIO_REG_WRITE(reg, val) WRITE_PERI_REG(reg, val)
|
|
#define GPIO_PIN_COUNT 40
|
|
#define GPIO_ID_PIN0 0
|
|
#define GPIO_ID_PIN(n) (GPIO_ID_PIN0+(n))
|
|
#define GPIO_PIN_ADDR(i) (GPIO_PIN0 + i*4)
|
|
|
|
#define GPIO_ID_IS_PIN_REGISTER(reg_id) \
|
|
((reg_id >= GPIO_ID_PIN0) && (reg_id <= GPIO_ID_PIN(GPIO_PIN_COUNT-1)))
|
|
|
|
#define GPIO_REGID_TO_PINIDX(reg_id) ((reg_id) - GPIO_ID_PIN0)
|
|
|
|
typedef enum{
|
|
GPIO_PIN_INTR_DISABLE = 0,
|
|
GPIO_PIN_INTR_POSEDGE = 1,
|
|
GPIO_PIN_INTR_NEGEDGE = 2,
|
|
GPIO_PIN_INTR_ANYEGDE = 3,
|
|
GPIO_PIN_INTR_LOLEVEL = 4,
|
|
GPIO_PIN_INTR_HILEVEL = 5
|
|
}GPIO_INT_TYPE;
|
|
|
|
#define GREEN_LED_ON() GPIO_OUTPUT_SET(GPIO_ID_PIN(1) , 0)
|
|
#define GREEN_LED_OFF() GPIO_OUTPUT_SET(GPIO_ID_PIN(1) , 1)
|
|
|
|
#define GPIO_OUTPUT_SET(gpio_no, bit_value) \
|
|
((gpio_no < 32) ? gpio_output_set(bit_value<<gpio_no, (bit_value ? 0 : 1)<<gpio_no, 1<<gpio_no,0) : \
|
|
gpio_output_set_high(bit_value<<(gpio_no - 32), (bit_value ? 0 : 1)<<(gpio_no - 32), 1<<(gpio_no -32),0))
|
|
#define GPIO_DIS_OUTPUT(gpio_no) ((gpio_no < 32) ? gpio_output_set(0,0,0, 1<<gpio_no) : gpio_output_set_high(0,0,0, 1<<gpio_no))
|
|
#define GPIO_INPUT_GET(gpio_no) ((gpio_no < 32)? ((gpio_input_get()>>gpio_no)&BIT0) : ((gpio_input_get_high()>>(gpio_no - 32))&BIT0))
|
|
|
|
/* GPIO interrupt handler, registered through gpio_intr_handler_register */
|
|
typedef void (* gpio_intr_handler_fn_t)(uint32_t intr_mask, bool high, void *arg);
|
|
|
|
|
|
/*
|
|
* Initialize GPIO. This includes reading the GPIO Configuration DataSet
|
|
* to initialize "output enables" and pin configurations for each gpio pin.
|
|
* Must be called once during startup.
|
|
*/
|
|
void gpio_init(void) ROMFN_ATTR;
|
|
|
|
/*
|
|
* Change GPIO pin output by setting, clearing, or disabling pins.
|
|
* In general, it is expected that a bit will be set in at most one
|
|
* of these masks. If a bit is clear in all masks, the output state
|
|
* remains unchanged.
|
|
*
|
|
* There is no particular ordering guaranteed; so if the order of
|
|
* writes is significant, calling code should divide a single call
|
|
* into multiple calls.
|
|
*/
|
|
void gpio_output_set(uint32_t set_mask,
|
|
uint32_t clear_mask,
|
|
uint32_t enable_mask,
|
|
uint32_t disable_mask) ROMFN_ATTR;
|
|
void gpio_output_set_high(uint32_t set_mask,
|
|
uint32_t clear_mask,
|
|
uint32_t enable_mask,
|
|
uint32_t disable_mask) ROMFN_ATTR;
|
|
/*
|
|
* Sample the value of GPIO input pins and returns a bitmask.
|
|
*/
|
|
uint32_t gpio_input_get(void) ROMFN_ATTR;
|
|
uint32_t gpio_input_get_high(void) ROMFN_ATTR;
|
|
|
|
/*
|
|
* Set the specified GPIO register to the specified value.
|
|
* This is a very general and powerful interface that is not
|
|
* expected to be used during normal operation. It is intended
|
|
* mainly for debug, or for unusual requirements.
|
|
*/
|
|
void gpio_register_set(uint32_t reg_id, uint32_t value) ROMFN_ATTR;
|
|
|
|
/* Get the current value of the specified GPIO register. */
|
|
uint32_t gpio_register_get(uint32_t reg_id) ROMFN_ATTR;
|
|
|
|
/*
|
|
* Register an application-specific interrupt handler for GPIO pin
|
|
* interrupts. Once the interrupt handler is called, it will not
|
|
* be called again until after a call to gpio_intr_ack. Any GPIO
|
|
* interrupts that occur during the interim are masked.
|
|
*
|
|
* The application-specific handler is called with a mask of
|
|
* pending GPIO interrupts. After processing pin interrupts, the
|
|
* application-specific handler may wish to use gpio_intr_pending
|
|
* to check for any additional pending interrupts before it returns.
|
|
*/
|
|
void gpio_intr_handler_register(gpio_intr_handler_fn_t fn, void *arg) ROMFN_ATTR;
|
|
|
|
/* Determine which GPIO interrupts are pending. */
|
|
uint32_t gpio_intr_pending(void) ROMFN_ATTR;
|
|
uint32_t gpio_intr_pending_high(void) ROMFN_ATTR;
|
|
|
|
/*
|
|
* Acknowledge GPIO interrupts.
|
|
* Intended to be called from the gpio_intr_handler_fn.
|
|
*/
|
|
void gpio_intr_ack(uint32_t ack_mask) ROMFN_ATTR;
|
|
void gpio_intr_ack_high(uint32_t ack_mask) ROMFN_ATTR;
|
|
|
|
void gpio_pin_wakeup_enable(uint32_t i, GPIO_INT_TYPE intr_state) ROMFN_ATTR;
|
|
|
|
void gpio_pin_wakeup_disable() ROMFN_ATTR;
|
|
|
|
//extern void gpio_module_install(struct gpio_api *api);
|
|
|
|
void gpio_matrix_in(uint32_t gpio, uint32_t signal_idx, bool inv) ROMFN_ATTR;
|
|
|
|
void gpio_matrix_out(uint32_t gpio, uint32_t signal_idx, bool out_inv, bool oen_inv) ROMFN_ATTR;
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _ROM_GPIO_H_ */
|