143 lines
5.1 KiB
C
143 lines
5.1 KiB
C
// Copyright 2010-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef _ROM_GPIO_H_
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#define _ROM_GPIO_H_
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#include <stdint.h>
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#include <stdbool.h>
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#include "esp_attr.h"
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#include "soc/gpio_reg.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define GPIO_REG_READ(reg) READ_PERI_REG(reg)
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#define GPIO_REG_WRITE(reg, val) WRITE_PERI_REG(reg, val)
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#define GPIO_PIN_COUNT 40
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#define GPIO_ID_PIN0 0
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#define GPIO_ID_PIN(n) (GPIO_ID_PIN0+(n))
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#define GPIO_PIN_ADDR(i) (GPIO_PIN0 + i*4)
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#define GPIO_ID_IS_PIN_REGISTER(reg_id) \
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((reg_id >= GPIO_ID_PIN0) && (reg_id <= GPIO_ID_PIN(GPIO_PIN_COUNT-1)))
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#define GPIO_REGID_TO_PINIDX(reg_id) ((reg_id) - GPIO_ID_PIN0)
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typedef enum{
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GPIO_PIN_INTR_DISABLE = 0,
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GPIO_PIN_INTR_POSEDGE = 1,
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GPIO_PIN_INTR_NEGEDGE = 2,
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GPIO_PIN_INTR_ANYEGDE = 3,
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GPIO_PIN_INTR_LOLEVEL = 4,
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GPIO_PIN_INTR_HILEVEL = 5
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}GPIO_INT_TYPE;
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#define GREEN_LED_ON() GPIO_OUTPUT_SET(GPIO_ID_PIN(1) , 0)
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#define GREEN_LED_OFF() GPIO_OUTPUT_SET(GPIO_ID_PIN(1) , 1)
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#define GPIO_OUTPUT_SET(gpio_no, bit_value) \
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((gpio_no < 32) ? gpio_output_set(bit_value<<gpio_no, (bit_value ? 0 : 1)<<gpio_no, 1<<gpio_no,0) : \
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gpio_output_set_high(bit_value<<(gpio_no - 32), (bit_value ? 0 : 1)<<(gpio_no - 32), 1<<(gpio_no -32),0))
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#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))
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#define GPIO_INPUT_GET(gpio_no) ((gpio_no < 32)? ((gpio_input_get()>>gpio_no)&BIT0) : ((gpio_input_get_high()>>(gpio_no - 32))&BIT0))
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/* GPIO interrupt handler, registered through gpio_intr_handler_register */
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typedef void (* gpio_intr_handler_fn_t)(uint32_t intr_mask, bool high, void *arg);
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/*
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* Initialize GPIO. This includes reading the GPIO Configuration DataSet
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* to initialize "output enables" and pin configurations for each gpio pin.
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* Must be called once during startup.
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*/
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void gpio_init(void) ROMFN_ATTR;
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/*
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* Change GPIO pin output by setting, clearing, or disabling pins.
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* In general, it is expected that a bit will be set in at most one
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* of these masks. If a bit is clear in all masks, the output state
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* remains unchanged.
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*
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* There is no particular ordering guaranteed; so if the order of
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* writes is significant, calling code should divide a single call
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* into multiple calls.
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*/
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void gpio_output_set(uint32_t set_mask,
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uint32_t clear_mask,
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uint32_t enable_mask,
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uint32_t disable_mask) ROMFN_ATTR;
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void gpio_output_set_high(uint32_t set_mask,
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uint32_t clear_mask,
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uint32_t enable_mask,
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uint32_t disable_mask) ROMFN_ATTR;
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/*
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* Sample the value of GPIO input pins and returns a bitmask.
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*/
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uint32_t gpio_input_get(void) ROMFN_ATTR;
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uint32_t gpio_input_get_high(void) ROMFN_ATTR;
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/*
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* Set the specified GPIO register to the specified value.
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* This is a very general and powerful interface that is not
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* expected to be used during normal operation. It is intended
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* mainly for debug, or for unusual requirements.
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*/
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void gpio_register_set(uint32_t reg_id, uint32_t value) ROMFN_ATTR;
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/* Get the current value of the specified GPIO register. */
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uint32_t gpio_register_get(uint32_t reg_id) ROMFN_ATTR;
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/*
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* Register an application-specific interrupt handler for GPIO pin
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* interrupts. Once the interrupt handler is called, it will not
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* be called again until after a call to gpio_intr_ack. Any GPIO
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* interrupts that occur during the interim are masked.
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*
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* The application-specific handler is called with a mask of
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* pending GPIO interrupts. After processing pin interrupts, the
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* application-specific handler may wish to use gpio_intr_pending
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* to check for any additional pending interrupts before it returns.
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*/
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void gpio_intr_handler_register(gpio_intr_handler_fn_t fn, void *arg) ROMFN_ATTR;
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/* Determine which GPIO interrupts are pending. */
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uint32_t gpio_intr_pending(void) ROMFN_ATTR;
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uint32_t gpio_intr_pending_high(void) ROMFN_ATTR;
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/*
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* Acknowledge GPIO interrupts.
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* Intended to be called from the gpio_intr_handler_fn.
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*/
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void gpio_intr_ack(uint32_t ack_mask) ROMFN_ATTR;
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void gpio_intr_ack_high(uint32_t ack_mask) ROMFN_ATTR;
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void gpio_pin_wakeup_enable(uint32_t i, GPIO_INT_TYPE intr_state) ROMFN_ATTR;
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void gpio_pin_wakeup_disable() ROMFN_ATTR;
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//extern void gpio_module_install(struct gpio_api *api);
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void gpio_matrix_in(uint32_t gpio, uint32_t signal_idx, bool inv) ROMFN_ATTR;
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void gpio_matrix_out(uint32_t gpio, uint32_t signal_idx, bool out_inv, bool oen_inv) ROMFN_ATTR;
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ROM_GPIO_H_ */
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