/*
 * Wrapper module for source code compatibility with esp-open-rtos.
 */

#ifndef __ESP8266_WRAPPER_H__
#define __ESP8266_WRAPPER_H__

#ifdef ESP_PLATFORM  // ESP32 (ESP-IDF)

#ifdef __cplusplus
extern "C" {
#endif

#include "driver/gpio.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"

#include "driver/uart.h"
#include "driver/spi_common.h"

/*
 * esp-open-rtos SDK function wrapper 
 */

uint32_t sdk_system_get_time ();

#define uart_set_baud(p,r)  uart_set_baudrate (p,r)

#define IRAM IRAM_ATTR

#define GPIO_INTTYPE_NONE       GPIO_INTR_DISABLE
#define GPIO_INTTYPE_EDGE_POS   GPIO_INTR_POSEDGE
#define GPIO_INTTYPE_EDGE_NEG   GPIO_INTR_NEGEDGE
#define GPIO_INTTYPE_EDGE_ANY   GPIO_INTR_ANYEDGE
#define GPIO_INTTYPE_LEVEL_LOW  GPIO_INTR_LOW_LEVEL
#define GPIO_INTTYPE_LEVEL_HIGH GPIO_INTR_HIGH_LEVEL

// Set it true, if isr_service is already installed anywhere else or should
// not be installed, otherwise, *gpio_set_interrupt* install it when it is
// called first time.
extern bool gpio_isr_service_installed;

// pull-up, pull-down configuration used for next call of *gpio_set_interrupt*
extern bool auto_pull_up;   // default false;
extern bool auto_pull_down; // default true;

// ISR handler type compatible to the ESP8266
typedef void (*gpio_interrupt_handler_t)(uint8_t gpio);

// GPIO set interrupt function compatible to ESP8266
esp_err_t gpio_set_interrupt(gpio_num_t gpio, 
                             gpio_int_type_t type, 
                             gpio_interrupt_handler_t handler);

// GPIO enable function compatible to esp-open-rtos
#define GPIO_INPUT          GPIO_MODE_INPUT
#define GPIO_OUTPUT         GPIO_MODE_OUTPUT
#define GPIO_OUT_OPEN_DRAIN GPIO_MODE_OUTPUT_OD

void gpio_enable (gpio_num_t gpio, const gpio_mode_t mode);

/*
 * esp-open-rtos I2C interface wrapper
 */

#define I2C_FREQ_80K     80000
#define I2C_FREQ_100K   100000
#define I2C_FREQ_400K   400000
#define I2C_FREQ_500K   500000
#define I2C_FREQ_600K   600000
#define I2C_FREQ_800K   800000
#define I2C_FREQ_1000K 1000000
#define I2C_FREQ_1300K 1300000
  
#define i2c_set_clock_stretch(bus,cs)  // not needed on ESP32

void i2c_init (int bus, gpio_num_t scl, gpio_num_t sda, uint32_t freq);

int i2c_slave_write (uint8_t bus, uint8_t addr, const uint8_t *reg, 
                     uint8_t *data, uint32_t len);

int i2c_slave_read (uint8_t bus, uint8_t addr, const uint8_t *reg, 
                    uint8_t *data, uint32_t len);

/*
 * esp-open-rtos SPI interface wrapper
 */

bool spi_bus_init (spi_host_device_t host, 
                   uint8_t sclk , uint8_t miso, uint8_t mosi);

bool spi_device_init (uint8_t bus, uint8_t cs);

size_t spi_transfer_pf(uint8_t bus, uint8_t cs, 
                       const uint8_t *mosi, uint8_t *miso, uint16_t len);

/*
 * freertos api wrapper
 */

#ifdef __cplusplus
}
#endif

#endif  // ESP_PLATFORM

#endif  // __ESP8266_WRAPPER_H__