/*
   This example code is in the Public Domain (or CC0 licensed, at your option.)

   Unless required by applicable law or agreed to in writing, this
   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
   CONDITIONS OF ANY KIND, either express or implied.
*/

#include "driver/gpio.h"
#include "soc/gpio_reg.h"
#include "soc/gpio_sig_map.h"
#include "gpio_pcm_config.h"

#define GPIO_OUTPUT_PCM_FSYNC      (25)
#define GPIO_OUTPUT_PCM_CLK_OUT    (5)
#define GPIO_OUTPUT_PCM_DOUT       (26)
#define GPIO_INPUT_PCM_DIN         (35)

#define GPIO_OUTPUT_PCM_PIN_SEL  ((1ULL<<GPIO_OUTPUT_PCM_FSYNC) | (1ULL<<GPIO_OUTPUT_PCM_CLK_OUT) | (1ULL<<GPIO_OUTPUT_PCM_DOUT))

#define GPIO_INPUT_PCM_PIN_SEL (1ULL<<GPIO_INPUT_PCM_DIN)

void app_gpio_pcm_io_cfg(void)
{
    gpio_config_t io_conf;
    /// configure the PCM output pins
    //disable interrupt
    io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
    //set as output mode
    io_conf.mode = GPIO_MODE_OUTPUT;
    //bit mask of the pins that you want to set,e.g.GPIO18/19
    io_conf.pin_bit_mask = GPIO_OUTPUT_PCM_PIN_SEL;
    //disable pull-down mode
    io_conf.pull_down_en = 0;
    //disable pull-up mode
    io_conf.pull_up_en = 0;
    //configure GPIO with the given settings
    gpio_config(&io_conf);

    /// configure the PCM input pin
    //interrupt of rising edge
    io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
    //bit mask of the pins, use GPIO4/5 here
    io_conf.pin_bit_mask = GPIO_INPUT_PCM_PIN_SEL;
    //set as input mode
    io_conf.mode = GPIO_MODE_INPUT;
    //enable pull-up mode
    io_conf.pull_up_en = 0;
    io_conf.pull_down_en = 0;
    //configure GPIO with the given settings
    gpio_config(&io_conf);

    /// matrix out | in the internal PCM signals to the GPIOs
    gpio_matrix_out(GPIO_OUTPUT_PCM_FSYNC, PCMFSYNC_OUT_IDX, false, false);
    gpio_matrix_out(GPIO_OUTPUT_PCM_CLK_OUT, PCMCLK_OUT_IDX, false, false);
    gpio_matrix_out(GPIO_OUTPUT_PCM_DOUT, PCMDOUT_IDX, false, false);
    gpio_matrix_in(GPIO_INPUT_PCM_DIN, PCMDIN_IDX, false);
}

#if ACOUSTIC_ECHO_CANCELLATION_ENABLE

#define GPIO_OUTPUT_AEC_1      (19)
#define GPIO_OUTPUT_AEC_2      (21)
#define GPIO_OUTPUT_AEC_3      (22)
#define GPIO_OUTPUT_AEC_PIN_SEL  ((1ULL<<GPIO_OUTPUT_AEC_1) | (1ULL<<GPIO_OUTPUT_AEC_2) | (1ULL<<GPIO_OUTPUT_AEC_3))

void app_gpio_aec_io_cfg(void)
{
    gpio_config_t io_conf;
    //disable interrupt
    io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
    //set as output mode
    io_conf.mode = GPIO_MODE_OUTPUT;
    //bit mask of the pins that you want to set,e.g.GPIO18/19
    io_conf.pin_bit_mask = GPIO_OUTPUT_AEC_PIN_SEL;
    //disable pull-down mode
    io_conf.pull_down_en = 0;
    //disable pull-up mode
    io_conf.pull_up_en = 0;
    //configure GPIO with the given settings
    gpio_config(&io_conf);

    // set the output pins
    gpio_set_level(GPIO_OUTPUT_AEC_2, 0);

    gpio_set_level(GPIO_OUTPUT_AEC_1, 0);

    gpio_set_level(GPIO_OUTPUT_AEC_1, 1);

    gpio_set_level(GPIO_OUTPUT_AEC_3, 1);
}
#endif /* ACOUSTIC_ECHO_CANCELLATION_ENABLE */