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esp-idf/components/driver/include/driver/gpio.h
Wangjialin 288f4f63f0 Add UART driver 
1. add uart.h and uart.c
2. add ESP_ERR_TIMEOUT in esp_err.h
3. add UART AHB FIFO address in uart_reg.h
4. modify xRingbufferSendFromISR return value in ringbuffer.c
5. add #include "soc/gpio_sig_map.h" in gpio.h
2016-10-24 09:17:10 +08:00

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// Copyright 2015-2016 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 _DRIVER_GPIO_H_
#define _DRIVER_GPIO_H_
#include "esp_err.h"
#include <esp_types.h>
#include "soc/gpio_reg.h"
#include "soc/gpio_struct.h"
#include "soc/rtc_io_reg.h"
#include "soc/io_mux_reg.h"
#include "soc/gpio_sig_map.h"
#include "rom/gpio.h"
#include "esp_attr.h"
#ifdef __cplusplus
extern "C" {
#endif
#define GPIO_SEL_0 (BIT(0)) /* Pin 0 selected */
#define GPIO_SEL_1 (BIT(1)) /* Pin 1 selected */
#define GPIO_SEL_2 (BIT(2)) /* Pin 2 selected */
#define GPIO_SEL_3 (BIT(3)) /* Pin 3 selected */
#define GPIO_SEL_4 (BIT(4)) /* Pin 4 selected */
#define GPIO_SEL_5 (BIT(5)) /* Pin 5 selected */
#define GPIO_SEL_6 (BIT(6)) /* Pin 6 selected */
#define GPIO_SEL_7 (BIT(7)) /* Pin 7 selected */
#define GPIO_SEL_8 (BIT(8)) /* Pin 8 selected */
#define GPIO_SEL_9 (BIT(9)) /* Pin 9 selected */
#define GPIO_SEL_10 (BIT(10)) /* Pin 10 selected */
#define GPIO_SEL_11 (BIT(11)) /* Pin 11 selected */
#define GPIO_SEL_12 (BIT(12)) /* Pin 12 selected */
#define GPIO_SEL_13 (BIT(13)) /* Pin 13 selected */
#define GPIO_SEL_14 (BIT(14)) /* Pin 14 selected */
#define GPIO_SEL_15 (BIT(15)) /* Pin 15 selected */
#define GPIO_SEL_16 (BIT(16)) /* Pin 16 selected */
#define GPIO_SEL_17 (BIT(17)) /* Pin 17 selected */
#define GPIO_SEL_18 (BIT(18)) /* Pin 18 selected */
#define GPIO_SEL_19 (BIT(19)) /* Pin 19 selected */
#define GPIO_SEL_21 (BIT(21)) /* Pin 21 selected */
#define GPIO_SEL_22 (BIT(22)) /* Pin 22 selected */
#define GPIO_SEL_23 (BIT(23)) /* Pin 23 selected */
#define GPIO_SEL_25 (BIT(25)) /* Pin 25 selected */
#define GPIO_SEL_26 (BIT(26)) /* Pin 26 selected */
#define GPIO_SEL_27 (BIT(27)) /* Pin 27 selected */
#define GPIO_SEL_32 ((uint64_t)(((uint64_t)1)<<32)) /* Pin 32 selected */
#define GPIO_SEL_33 ((uint64_t)(((uint64_t)1)<<33)) /* Pin 33 selected */
#define GPIO_SEL_34 ((uint64_t)(((uint64_t)1)<<34)) /* Pin 34 selected */
#define GPIO_SEL_35 ((uint64_t)(((uint64_t)1)<<35)) /* Pin 35 selected */
#define GPIO_SEL_36 ((uint64_t)(((uint64_t)1)<<36)) /* Pin 36 selected */
#define GPIO_SEL_37 ((uint64_t)(((uint64_t)1)<<37)) /* Pin 37 selected */
#define GPIO_SEL_38 ((uint64_t)(((uint64_t)1)<<38)) /* Pin 38 selected */
#define GPIO_SEL_39 ((uint64_t)(((uint64_t)1)<<39)) /* Pin 39 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_16 PERIPHS_IO_MUX_GPIO16_U
#define GPIO_PIN_REG_17 PERIPHS_IO_MUX_GPIO17_U
#define GPIO_PIN_REG_18 PERIPHS_IO_MUX_GPIO18_U
#define GPIO_PIN_REG_19 PERIPHS_IO_MUX_GPIO19_U
#define GPIO_PIN_REG_20 PERIPHS_IO_MUX_GPIO20_U
#define GPIO_PIN_REG_21 PERIPHS_IO_MUX_GPIO21_U
#define GPIO_PIN_REG_22 PERIPHS_IO_MUX_GPIO22_U
#define GPIO_PIN_REG_23 PERIPHS_IO_MUX_GPIO23_U
#define GPIO_PIN_REG_25 PERIPHS_IO_MUX_GPIO25_U
#define GPIO_PIN_REG_26 PERIPHS_IO_MUX_GPIO26_U
#define GPIO_PIN_REG_27 PERIPHS_IO_MUX_GPIO27_U
#define GPIO_PIN_REG_32 PERIPHS_IO_MUX_GPIO32_U
#define GPIO_PIN_REG_33 PERIPHS_IO_MUX_GPIO33_U
#define GPIO_PIN_REG_34 PERIPHS_IO_MUX_GPIO34_U
#define GPIO_PIN_REG_35 PERIPHS_IO_MUX_GPIO35_U
#define GPIO_PIN_REG_36 PERIPHS_IO_MUX_GPIO36_U
#define GPIO_PIN_REG_37 PERIPHS_IO_MUX_GPIO37_U
#define GPIO_PIN_REG_38 PERIPHS_IO_MUX_GPIO38_U
#define GPIO_PIN_REG_39 PERIPHS_IO_MUX_GPIO39_U
#define GPIO_APP_CPU_INTR_ENA (BIT(0))
#define GPIO_APP_CPU_NMI_INTR_ENA (BIT(1))
#define GPIO_PRO_CPU_INTR_ENA (BIT(2))
#define GPIO_PRO_CPU_NMI_INTR_ENA (BIT(3))
#define GPIO_SDIO_EXT_INTR_ENA (BIT(4))
#define GPIO_MODE_DEF_INPUT (BIT0)
#define GPIO_MODE_DEF_OUTPUT (BIT1)
#define GPIO_MODE_DEF_OD (BIT2)
#define GPIO_PIN_COUNT 40
extern const uint32_t GPIO_PIN_MUX_REG[GPIO_PIN_COUNT];
#define GPIO_IS_VALID_GPIO(gpio_num) ((gpio_num < GPIO_PIN_COUNT && GPIO_PIN_MUX_REG[gpio_num] != 0)) //to decide whether it is a valid GPIO number
#define GPIO_IS_VALID_OUTPUT_GPIO(gpio_num) ((GPIO_IS_VALID_GPIO(gpio_num)) && (gpio_num < 34)) //to decide whether it can be a valid GPIO number of output mode
typedef enum {
GPIO_NUM_0 = 0,
GPIO_NUM_1 = 1,
GPIO_NUM_2 = 2,
GPIO_NUM_3 = 3,
GPIO_NUM_4 = 4,
GPIO_NUM_5 = 5,
GPIO_NUM_6 = 6,
GPIO_NUM_7 = 7,
GPIO_NUM_8 = 8,
GPIO_NUM_9 = 9,
GPIO_NUM_10 = 10,
GPIO_NUM_11 = 11,
GPIO_NUM_12 = 12,
GPIO_NUM_13 = 13,
GPIO_NUM_14 = 14,
GPIO_NUM_15 = 15,
GPIO_NUM_16 = 16,
GPIO_NUM_17 = 17,
GPIO_NUM_18 = 18,
GPIO_NUM_19 = 19,
GPIO_NUM_21 = 21,
GPIO_NUM_22 = 22,
GPIO_NUM_23 = 23,
GPIO_NUM_25 = 25,
GPIO_NUM_26 = 26,
GPIO_NUM_27 = 27,
GPIO_NUM_32 = 32,
GPIO_NUM_33 = 33,
GPIO_NUM_34 = 34, /*input mode only */
GPIO_NUM_35 = 35, /*input mode only */
GPIO_NUM_36 = 36, /*input mode only */
GPIO_NUM_37 = 37, /*input mode only */
GPIO_NUM_38 = 38, /*input mode only */
GPIO_NUM_39 = 39, /*input mode only */
} gpio_num_t;
typedef enum {
GPIO_INTR_DISABLE = 0, /* disable GPIO interrupt */
GPIO_INTR_POSEDGE = 1, /* GPIO interrupt type : rising edge */
GPIO_INTR_NEGEDGE = 2, /* GPIO interrupt type : falling edge */
GPIO_INTR_ANYEDGE = 3, /* GPIO interrupt type : both rising and falling edge */
GPIO_INTR_LOW_LEVEL = 4, /* GPIO interrupt type : input low level trigger */
GPIO_INTR_HIGH_LEVEL = 5, /* GPIO interrupt type : input high level trigger */
GPIO_INTR_MAX,
} gpio_int_type_t;
typedef enum {
GPIO_MODE_INPUT = GPIO_MODE_DEF_INPUT, /* GPIO mode : input only */
GPIO_MODE_OUTPUT = GPIO_MODE_DEF_OUTPUT, /* GPIO mode : output only mode */
GPIO_MODE_OUTPUT_OD = ((GPIO_MODE_DEF_OUTPUT)|(GPIO_MODE_DEF_OD)), /* GPIO mode : output only with open-drain mode */
GPIO_MODE_INPUT_OUTPUT_OD = ((GPIO_MODE_DEF_INPUT)|(GPIO_MODE_DEF_OUTPUT)|(GPIO_MODE_DEF_OD)), /* GPIO mode : output and input with open-drain mode*/
GPIO_MODE_INPUT_OUTPUT = ((GPIO_MODE_DEF_INPUT)|(GPIO_MODE_DEF_OUTPUT)), /* GPIO mode : output and input mode */
} gpio_mode_t;
typedef enum {
GPIO_PULLUP_DISABLE = 0x0, /* disable GPIO pull-up resistor */
GPIO_PULLUP_ENABLE = 0x1, /* enable GPIO pull-up resistor */
} gpio_pullup_t;
typedef enum {
GPIO_PULLDOWN_DISABLE = 0x0, /* disable GPIO pull-down resistor */
GPIO_PULLDOWN_ENABLE = 0x1, /* enable GPIO pull-down resistor */
} gpio_pulldown_t;
typedef struct {
uint64_t pin_bit_mask; /* GPIO pin: set with bit mask, each bit maps to a GPIO */
gpio_mode_t mode; /* GPIO mode: set input/output mode */
gpio_pullup_t pull_up_en; /* GPIO pull-up */
gpio_pulldown_t pull_down_en; /* GPIO pull-down */
gpio_int_type_t intr_type; /* GPIO interrupt type */
} gpio_config_t;
typedef enum {
GPIO_LOW_LEVEL = 0,
GPIO_HIGH_LEVEL = 1,
GPIO_LEVEL_ERR,
} gpio_level_t;
typedef enum {
GPIO_PULLUP_ONLY, /* Pad pull up */
GPIO_PULLDOWN_ONLY, /* Pad pull down */
GPIO_PULLUP_PULLDOWN, /* Pad pull up + pull down*/
GPIO_FLOATING, /* Pad floating */
} gpio_pull_mode_t;
typedef void (*gpio_event_callback)(gpio_num_t gpio_intr_num);
/** \defgroup Driver_APIs Driver APIs
* @brief Driver APIs
*/
/** @addtogroup Driver_APIs
* @{
*/
/** \defgroup GPIO_Driver_APIs GPIO Driver APIs
* @brief GPIO APIs
*/
/** @addtogroup GPIO_Driver_APIs
* @{
*/
/**
* @brief GPIO common configuration
*
* Use this Function ,Configure GPIO's Mode,pull-up,PullDown,IntrType
*
* @parameter[in] pGPIOConfig
* pGPIOConfig.pin_bit_mask : Configure GPIO pins bits,set this parameter with bit mask.
* If you want to configure GPIO34 and GPIO16, pin_bit_mask=GPIO_Pin_16|GPIO_Pin_34;
* pGPIOConfig.mode : Configure GPIO mode,such as output ,input...
* pGPIOConfig.pull_up_en : Enable or Disable pull-up
* pGPIOConfig.pull_down_en : Enable or Disable pull-down
* pGPIOConfig.intr_type : Configure GPIO interrupt trigger type
* @return ESP_OK: success ;
* ESP_ERR_INVALID_ARG: parameter error
* ESP_FAIL : GPIO error
*
*/
esp_err_t gpio_config(gpio_config_t *pGPIOConfig);
/**
* @brief GPIO set interrupt trigger type
*
* @parameter[in] gpio_num : GPIO number.
* If you want to set output level of GPIO16, gpio_num should be GPIO_NUM_16 (16);
* @parameter[in] intr_type: interrupt type, select from gpio_int_type_t
*
* @return ESP_OK : success
* ESP_ERR_INVALID_ARG: parameter error
*
*/
esp_err_t gpio_set_intr_type(gpio_num_t gpio_num, gpio_int_type_t intr_type);
/**
* @brief enable GPIO module interrupt signal
*
* @parameter[in] gpio_num : GPIO number.
* If you want to set output level of GPIO16, gpio_num should be GPIO_NUM_16 (16);
*
* @return ESP_OK : success
* ESP_ERR_INVALID_ARG: parameter error
*
*/
esp_err_t gpio_intr_enable(gpio_num_t gpio_num);
/**
* @brief disable GPIO module interrupt signal
*
* @parameter[in] gpio_num : GPIO number.
* If you want to set output level of GPIO16, gpio_num should be GPIO_NUM_16 (16);
*
* @return ESP_OK : success
* ESP_ERR_INVALID_ARG: parameter error
*
*/
esp_err_t gpio_intr_disable(gpio_num_t gpio_num);
/**
* @brief GPIO set output level
*
* @parameter[in] gpio_num : GPIO number.
* If you want to set output level of GPIO16, gpio_num should be GPIO_NUM_16 (16);
* @parameter[in] level : Output level. 0: low ; 1: high
*
* @return ESP_OK : success
* ESP_FAIL : GPIO error
*
*/
esp_err_t gpio_set_level(gpio_num_t gpio_num, uint32_t level);
/**
* @brief GPIO get input level
*
* @parameter[in] gpio_num : GPIO number.
* If you want to get level of pin GPIO16, gpio_num should be GPIO_NUM_16 (16);
*
* @return 0 : the GPIO input level is 0
* 1 : the GPIO input level is 1
*
*/
int gpio_get_level(gpio_num_t gpio_num);
/**
* @brief GPIO set direction
*
* Configure GPIO direction,such as output_only,input_only,output_and_input
*
* @parameter[in] gpio_num : Configure GPIO pins number,it should be GPIO number.
* If you want to set direction of GPIO16, gpio_num should be GPIO_NUM_16 (16);
* @parameter[in] mode : Configure GPIO direction,such as output_only,input_only,...
*
* @return ESP_OK : success
* ESP_ERR_INVALID_ARG : fail
* ESP_FAIL : GPIO error
*
*/
esp_err_t gpio_set_direction(gpio_num_t gpio_num, gpio_mode_t mode);
/**
* @brief GPIO set pull
*
* User this Function,configure GPIO pull mode,such as pull-up,pull-down
*
* @parameter[in] gpio_num : Configure GPIO pins number,it should be GPIO number.
* If you want to set pull up or down mode for GPIO16,gpio_num should be GPIO_NUM_16 (16);
* @parameter[in] pull : Configure GPIO pull up/down mode,such as pullup_only,pulldown_only,pullup_and_pulldown,...
*
* @return ESP_OK : success
* ESP_ERR_INVALID_ARG : fail
* ESP_FAIL : GPIO error
*
*/
esp_err_t gpio_set_pull_mode(gpio_num_t gpio_num, gpio_pull_mode_t pull);
/**
* @brief enable GPIO wake-up function.
*
* @param gpio_num_t gpio_num : GPIO number.
*
* @param gpio_int_type_t intr_type : only GPIO_INTR_LOLEVEL\GPIO_INTR_HILEVEL can be used
*
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
*/
esp_err_t gpio_wakeup_enable(gpio_num_t gpio_num, gpio_int_type_t intr_type);
/**
* @brief disable GPIO wake-up function.
*
* @param gpio_num_t gpio_num: GPIO number
*
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
*/
esp_err_t gpio_wakeup_disable(gpio_num_t gpio_num);
/**
* @brief register GPIO interrupt handler, the handler is an ISR.
* The handler will be attached to the same CPU core that this function is running on.
* Users should know that which CPU is running and then pick a INUM that is not used by system.
* We can find the information of INUM and interrupt level in soc.h.
* TODO: to move INUM options to menu_config
* @parameter uint32_t gpio_intr_num : GPIO interrupt number,check the info in soc.h, and please see the core-isa.h for more details
* @parameter void (* fn)(void* ) : interrupt handler function.
* Note that the handler function MUST be defined with attribution of "IRAM_ATTR".
* @parameter void * arg : parameter for handler function
*
* @return ESP_OK : success ;
* ESP_FAIL: gpio error
*/
esp_err_t gpio_isr_register(uint32_t gpio_intr_num, void (*fn)(void*), void * arg);
/**
* *************** ATTENTION ********************/
/**
*
* Each GPIO has its own separate configuration register, so we do not use
* a lock to serialize access to them. This works under the assumption that
* no situation will occur where two tasks try to configure the same GPIO
* pin simultaneously. It is up to the application developer to guarantee this.
*/
/*----------EXAMPLE TO CONIFGURE GPIO AS OUTPUT ------------ */
/* gpio_config_t io_conf;
* io_conf.intr_type = GPIO_INTR_DISABLE; //disable interrupt
* io_conf.mode = GPIO_MODE_OUTPUT; //set as output mode
* io_conf.pin_bit_mask = GPIO_SEL_18 | GPIO_SEL_19; //bit mask of the pins that you want to set,e.g.GPIO18/19
* io_conf.pull_down_en = 0; //disable pull-down mode
* io_conf.pull_up_en = 0; //disable pull-up mode
* gpio_config(&io_conf); //configure GPIO with the given settings
**/
/*----------EXAMPLE TO CONIFGURE GPIO AS OUTPUT ------------ */
/* io_conf.intr_type = GPIO_INTR_POSEDGE; //set posedge interrupt
* io_conf.mode = GPIO_MODE_INPUT; //set as input
* io_conf.pin_bit_mask = GPIO_SEL_4 | GPIO_SEL_5; //bit mask of the pins that you want to set, e.g.,GPIO4/5
* io_conf.pull_down_en = 0; //disable pull-down mode
* io_conf.pull_up_en = 1; //enable pull-up mode
* gpio_config(&io_conf); //configure GPIO with the given settings
*----------EXAMPLE TO SET ISR HANDLER ----------------------*/
/* gpio_isr_register(18,gpio_intr_test,NULL); //hook the isr handler for GPIO interrupt
* //the first parameter is INUM, you can pick one form interrupt level 1/2 which is not used by the system.
* //NOTE1:user should arrange the INUMs that used, better not to use a same INUM for different interrupt.
* //NOTE2:do not pick the INUM that already occupied by the system.
* //NOTE3:refer to soc.h to check which INUMs that can be used.
*-------------EXAMPLE OF HANDLER FUNCTION-------------------*/
/*#include "esp_attr.h"
* void IRAM_ATTR gpio_intr_test(void* arg)
*{
* //GPIO intr process
* ets_printf("in gpio_intr\n");
* uint32_t gpio_num = 0;
* uint32_t gpio_intr_status = READ_PERI_REG(GPIO_STATUS_REG); //read status to get interrupt status for GPIO0-31
* uint32_t gpio_intr_status_h = READ_PERI_REG(GPIO_STATUS1_REG);//read status1 to get interrupt status for GPIO32-39
* SET_PERI_REG_MASK(GPIO_STATUS_W1TC_REG, gpio_intr_status); //Clear intr for gpio0-gpio31
* SET_PERI_REG_MASK(GPIO_STATUS1_W1TC_REG, gpio_intr_status_h); //Clear intr for gpio32-39
* do {
* if(gpio_num < 32) {
* if(gpio_intr_status & BIT(gpio_num)) { //gpio0-gpio31
* ets_printf("Intr GPIO%d ,val: %d\n",gpio_num,gpio_get_level(gpio_num));
* //This is an isr handler, you should post an event to process it in RTOS queue.
* }
* } else {
* if(gpio_intr_status_h & BIT(gpio_num - 32)) {
* ets_printf("Intr GPIO%d, val : %d\n",gpio_num,gpio_get_level(gpio_num));
* //This is an isr handler, you should post an event to process it in RTOS queue.
* }
* }
* } while(++gpio_num < GPIO_PIN_COUNT);
*}
*----EXAMPLE OF I2C CONFIG AND PICK SIGNAL FOR IO MATRIX---*/
/* gpio_config_t io_conf;
* io_conf.intr_type = GPIO_INTR_DISABLE; //disable interrupt
* io_conf.mode = GPIO_MODE_INPUT_OUTPUT_OD; //set as output mode
* io_conf.pin_bit_mask = GPIO_SEL_21 | GPIO_SEL_22; //bit mask of the pins that you want to set,e.g.GPIO21/22
* io_conf.pull_down_en = 0; //disable pull-down mode
* io_conf.pull_up_en = 1; //enable pull-up mode
* gpio_config(&io_conf); //configure GPIO with the given settings
* gpio_matrix_out(21, EXT_I2C_SCL_O_IDX, 0, 0); //set output signal for io_matrix
* gpio_matrix_out(22, EXT_I2C_SDA_O_IDX, 0, 0); //set output signal for io_matrix
* gpio_matrix_in( 22, EXT_I2C_SDA_I_IDX, 0); //set input signal for io_matrix
*
*/
/**
* @}
*/
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* _DRIVER_GPIO_H_ */
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