gpio.h

/*
 * ESPRSSIF MIT License
 *
 * Copyright (c) 2015 <ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD>
 *
 * Permission is hereby granted for use on ESPRESSIF SYSTEMS ESP8266 only, in which case,
 * it is 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.
 *
 */

#ifndef __GPIO_H__
#define __GPIO_H__

#ifdef __cplusplus
extern "C" {
#endif

#define GPIO_Pin_0              (BIT(0))  /* Pin 0 selected */
#define GPIO_Pin_1              (BIT(1))  /* Pin 1 selected */
#define GPIO_Pin_2              (BIT(2))  /* Pin 2 selected */
#define GPIO_Pin_3              (BIT(3))  /* Pin 3 selected */
#define GPIO_Pin_4              (BIT(4))  /* Pin 4 selected */
#define GPIO_Pin_5              (BIT(5))  /* Pin 5 selected */
#define GPIO_Pin_6              (BIT(6))  /* Pin 6 selected */
#define GPIO_Pin_7              (BIT(7))  /* Pin 7 selected */
#define GPIO_Pin_8              (BIT(8))  /* Pin 8 selected */
#define GPIO_Pin_9              (BIT(9))  /* Pin 9 selected */
#define GPIO_Pin_10             (BIT(10)) /* Pin 10 selected */
#define GPIO_Pin_11             (BIT(11)) /* Pin 11 selected */
#define GPIO_Pin_12             (BIT(12)) /* Pin 12 selected */
#define GPIO_Pin_13             (BIT(13)) /* Pin 13 selected */
#define GPIO_Pin_14             (BIT(14)) /* Pin 14 selected */
#define GPIO_Pin_15             (BIT(15)) /* Pin 15 selected */
#define GPIO_Pin_All            (0xFFFF)  /* All pins selected */

#define GPIO_PIN_REG_0          PERIPHS_IO_MUX_GPIO0_U
#define GPIO_PIN_REG_1          PERIPHS_IO_MUX_U0TXD_U
#define GPIO_PIN_REG_2          PERIPHS_IO_MUX_GPIO2_U
#define GPIO_PIN_REG_3          PERIPHS_IO_MUX_U0RXD_U
#define GPIO_PIN_REG_4          PERIPHS_IO_MUX_GPIO4_U
#define GPIO_PIN_REG_5          PERIPHS_IO_MUX_GPIO5_U
#define GPIO_PIN_REG_6          PERIPHS_IO_MUX_SD_CLK_U
#define GPIO_PIN_REG_7          PERIPHS_IO_MUX_SD_DATA0_U
#define GPIO_PIN_REG_8          PERIPHS_IO_MUX_SD_DATA1_U
#define GPIO_PIN_REG_9          PERIPHS_IO_MUX_SD_DATA2_U
#define GPIO_PIN_REG_10         PERIPHS_IO_MUX_SD_DATA3_U
#define GPIO_PIN_REG_11         PERIPHS_IO_MUX_SD_CMD_U
#define GPIO_PIN_REG_12         PERIPHS_IO_MUX_MTDI_U
#define GPIO_PIN_REG_13         PERIPHS_IO_MUX_MTCK_U
#define GPIO_PIN_REG_14         PERIPHS_IO_MUX_MTMS_U
#define GPIO_PIN_REG_15         PERIPHS_IO_MUX_MTDO_U

#define GPIO_PIN_REG(i) \
    (i==0) ? GPIO_PIN_REG_0:  \
    (i==1) ? GPIO_PIN_REG_1:  \
    (i==2) ? GPIO_PIN_REG_2:  \
    (i==3) ? GPIO_PIN_REG_3:  \
    (i==4) ? GPIO_PIN_REG_4:  \
    (i==5) ? GPIO_PIN_REG_5:  \
    (i==6) ? GPIO_PIN_REG_6:  \
    (i==7) ? GPIO_PIN_REG_7:  \
    (i==8) ? GPIO_PIN_REG_8:  \
    (i==9) ? GPIO_PIN_REG_9:  \
    (i==10)? GPIO_PIN_REG_10: \
    (i==11)? GPIO_PIN_REG_11: \
    (i==12)? GPIO_PIN_REG_12: \
    (i==13)? GPIO_PIN_REG_13: \
    (i==14)? GPIO_PIN_REG_14: \
    GPIO_PIN_REG_15

#define GPIO_PIN_ADDR(i)        (GPIO_PIN0_ADDRESS + 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_ANYEDGE = 3,      
    GPIO_PIN_INTR_LOLEVEL = 4,      
    GPIO_PIN_INTR_HILEVEL = 5       
} GPIO_INT_TYPE;

typedef enum {
    GPIO_Mode_Input = 0x0,          
    GPIO_Mode_Out_OD,               
    GPIO_Mode_Output ,              
    GPIO_Mode_Sigma_Delta ,         
} GPIOMode_TypeDef;

typedef enum {
    GPIO_PullUp_DIS = 0x0,      
    GPIO_PullUp_EN  = 0x1,      
} GPIO_Pullup_IF;

typedef struct {
    uint16           GPIO_Pin;      
    GPIOMode_TypeDef GPIO_Mode;     
    GPIO_Pullup_IF   GPIO_Pullup;   
    GPIO_INT_TYPE    GPIO_IntrType; 
} GPIO_ConfigTypeDef;

#define GPIO_OUTPUT_SET(gpio_no, bit_value) \
    gpio_output_conf(bit_value<<gpio_no, ((~bit_value)&0x01)<<gpio_no, 1<<gpio_no, 0)

#define GPIO_OUTPUT(gpio_bits, bit_value) \
    if(bit_value) gpio_output_conf(gpio_bits, 0, gpio_bits, 0);\
    else gpio_output_conf(0, gpio_bits, gpio_bits, 0)

#define GPIO_DIS_OUTPUT(gpio_no)    gpio_output_conf(0, 0, 0, 1<<gpio_no)

#define GPIO_AS_INPUT(gpio_bits)    gpio_output_conf(0, 0, 0, gpio_bits)

#define GPIO_AS_OUTPUT(gpio_bits)   gpio_output_conf(0, 0, gpio_bits, 0)

#define GPIO_INPUT_GET(gpio_no)     ((gpio_input_get()>>gpio_no)&BIT0)

void gpio16_output_conf(void);

void gpio16_output_set(uint8 value);

void gpio16_input_conf(void);

uint8 gpio16_input_get(void);

void gpio_output_conf(uint32 set_mask, uint32 clear_mask, uint32 enable_mask, uint32 disable_mask);

void gpio_intr_handler_register(void *fn, void *arg);

void gpio_pin_wakeup_enable(uint32 i, GPIO_INT_TYPE intr_state);

void gpio_pin_wakeup_disable();

void gpio_pin_intr_state_set(uint32 i, GPIO_INT_TYPE intr_state);

uint32 gpio_input_get(void);

#ifdef __cplusplus
}
#endif

#endif