93 lines
3 KiB
C
93 lines
3 KiB
C
/*
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include "driver/gpio.h"
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#include "soc/gpio_reg.h"
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#include "soc/gpio_sig_map.h"
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#include "gpio_pcm_config.h"
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#define GPIO_OUTPUT_PCM_FSYNC (25)
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#define GPIO_OUTPUT_PCM_CLK_OUT (5)
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#define GPIO_OUTPUT_PCM_DOUT (26)
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#define GPIO_INPUT_PCM_DIN (35)
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#define GPIO_OUTPUT_PCM_PIN_SEL ((1ULL<<GPIO_OUTPUT_PCM_FSYNC) | (1ULL<<GPIO_OUTPUT_PCM_CLK_OUT) | (1ULL<<GPIO_OUTPUT_PCM_DOUT))
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#define GPIO_INPUT_PCM_PIN_SEL (1ULL<<GPIO_INPUT_PCM_DIN)
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void app_gpio_pcm_io_cfg(void)
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{
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gpio_config_t io_conf;
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/// configure the PCM output pins
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//disable interrupt
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io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
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//set as output mode
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io_conf.mode = GPIO_MODE_OUTPUT;
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//bit mask of the pins that you want to set,e.g.GPIO18/19
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io_conf.pin_bit_mask = GPIO_OUTPUT_PCM_PIN_SEL;
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//disable pull-down mode
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io_conf.pull_down_en = 0;
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//disable pull-up mode
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io_conf.pull_up_en = 0;
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//configure GPIO with the given settings
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gpio_config(&io_conf);
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/// configure the PCM input pin
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//interrupt of rising edge
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io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
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//bit mask of the pins, use GPIO4/5 here
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io_conf.pin_bit_mask = GPIO_INPUT_PCM_PIN_SEL;
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//set as input mode
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io_conf.mode = GPIO_MODE_INPUT;
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//enable pull-up mode
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io_conf.pull_up_en = 0;
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io_conf.pull_down_en = 0;
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//configure GPIO with the given settings
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gpio_config(&io_conf);
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/// matrix out | in the internal PCM signals to the GPIOs
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gpio_matrix_out(GPIO_OUTPUT_PCM_FSYNC, PCMFSYNC_OUT_IDX, false, false);
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gpio_matrix_out(GPIO_OUTPUT_PCM_CLK_OUT, PCMCLK_OUT_IDX, false, false);
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gpio_matrix_out(GPIO_OUTPUT_PCM_DOUT, PCMDOUT_IDX, false, false);
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gpio_matrix_in(GPIO_INPUT_PCM_DIN, PCMDIN_IDX, false);
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}
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#if ACOUSTIC_ECHO_CANCELLATION_ENABLE
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#define GPIO_OUTPUT_AEC_1 (19)
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#define GPIO_OUTPUT_AEC_2 (21)
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#define GPIO_OUTPUT_AEC_3 (22)
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#define GPIO_OUTPUT_AEC_PIN_SEL ((1ULL<<GPIO_OUTPUT_AEC_1) | (1ULL<<GPIO_OUTPUT_AEC_2) | (1ULL<<GPIO_OUTPUT_AEC_3))
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void app_gpio_aec_io_cfg(void)
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{
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gpio_config_t io_conf;
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//disable interrupt
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io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
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//set as output mode
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io_conf.mode = GPIO_MODE_OUTPUT;
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//bit mask of the pins that you want to set,e.g.GPIO18/19
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io_conf.pin_bit_mask = GPIO_OUTPUT_AEC_PIN_SEL;
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//disable pull-down mode
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io_conf.pull_down_en = 0;
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//disable pull-up mode
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io_conf.pull_up_en = 0;
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//configure GPIO with the given settings
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gpio_config(&io_conf);
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// set the output pins
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gpio_set_level(GPIO_OUTPUT_AEC_2, 0);
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gpio_set_level(GPIO_OUTPUT_AEC_1, 0);
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gpio_set_level(GPIO_OUTPUT_AEC_1, 1);
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gpio_set_level(GPIO_OUTPUT_AEC_3, 1);
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}
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#endif /* ACOUSTIC_ECHO_CANCELLATION_ENABLE */
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