hfp_hf sample
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Outline
#include "driver/gpio.h"
#include "soc/gpio_reg.h"
#include "soc/gpio_sig_map.h"
#include "gpio_pcm_config.h"
#include "esp_rom_gpio.h"
#define GPIO_OUTPUT_PCM_FSYNC
#define GPIO_OUTPUT_PCM_CLK_OUT
#define GPIO_OUTPUT_PCM_DOUT
#define GPIO_INPUT_PCM_DIN
#define GPIO_OUTPUT_PCM_PIN_SEL
#define GPIO_INPUT_PCM_PIN_SEL
app_gpio_pcm_io_cfg()
#define GPIO_OUTPUT_AEC_1
#define GPIO_OUTPUT_AEC_2
#define GPIO_OUTPUT_AEC_3
#define GPIO_OUTPUT_AEC_PIN_SEL
app_gpio_aec_io_cfg()
Files
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SourceVuESP-IDF Framework and Exampleshfp_hf samplemain/gpio_pcm_config.c
 
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/* * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Unlicense OR CC0-1.0 *//* ... */ #include "driver/gpio.h" #include "soc/gpio_reg.h" #include "soc/gpio_sig_map.h" #include "gpio_pcm_config.h" #include "esp_rom_gpio.h"5 includes #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)6 defines void app_gpio_pcm_io_cfg(void) { gpio_config_t io_conf; /// configure the PCM output pins //disable interrupt io_conf.intr_type = GPIO_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_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 esp_rom_gpio_connect_out_signal(GPIO_OUTPUT_PCM_FSYNC, PCMFSYNC_OUT_IDX, false, false); esp_rom_gpio_connect_out_signal(GPIO_OUTPUT_PCM_CLK_OUT, PCMCLK_OUT_IDX, false, false); esp_rom_gpio_connect_out_signal(GPIO_OUTPUT_PCM_DOUT, PCMDOUT_IDX, false, false); esp_rom_gpio_connect_in_signal(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_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 */
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