| /* |
| * Copyright (c) 2018 STMicroelectronics |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <string.h> |
| #include <zephyr/kernel.h> |
| #include <zephyr/sys/printk.h> |
| |
| #include <zephyr/drivers/gpio.h> |
| #include <zephyr/drivers/led.h> |
| |
| #include <zephyr/audio/dmic.h> |
| |
| /* uncomment if you want PCM output in ascii */ |
| /*#define PCM_OUTPUT_IN_ASCII 1 */ |
| |
| #define AUDIO_FREQ 16000 |
| #define CHAN_SIZE 16 |
| #define PCM_BLK_SIZE_MS ((AUDIO_FREQ/1000) * sizeof(int16_t)) |
| |
| #define NUM_MS 5000 |
| |
| K_MEM_SLAB_DEFINE(rx_mem_slab, PCM_BLK_SIZE_MS, NUM_MS, 1); |
| |
| struct pcm_stream_cfg mic_streams = { |
| .pcm_rate = AUDIO_FREQ, |
| .pcm_width = CHAN_SIZE, |
| .block_size = PCM_BLK_SIZE_MS, |
| .mem_slab = &rx_mem_slab, |
| }; |
| |
| struct dmic_cfg cfg = { |
| .io = { |
| /* requesting a pdm freq around 2MHz */ |
| .min_pdm_clk_freq = 1800000, |
| .max_pdm_clk_freq = 2500000, |
| }, |
| .streams = &mic_streams, |
| .channel = { |
| .req_num_chan = 1, |
| }, |
| }; |
| |
| #define NUM_LEDS 12 |
| #define DELAY_TIME K_MSEC(25) |
| |
| static const struct gpio_dt_spec led0 = GPIO_DT_SPEC_GET(DT_ALIAS(led0), gpios); |
| static const struct gpio_dt_spec led1 = GPIO_DT_SPEC_GET(DT_ALIAS(led1), gpios); |
| |
| void signal_sampling_started(void) |
| { |
| gpio_pin_configure_dt(&led0, GPIO_OUTPUT_ACTIVE); |
| gpio_pin_configure_dt(&led1, GPIO_OUTPUT_INACTIVE); |
| } |
| |
| void signal_sampling_stopped(void) |
| { |
| gpio_pin_configure_dt(&led0, GPIO_OUTPUT_ACTIVE); |
| gpio_pin_configure_dt(&led1, GPIO_OUTPUT_ACTIVE); |
| } |
| |
| void signal_print_stopped(void) |
| { |
| gpio_pin_configure_dt(&led0, GPIO_OUTPUT_INACTIVE); |
| gpio_pin_configure_dt(&led1, GPIO_OUTPUT_ACTIVE); |
| } |
| |
| void *rx_block[NUM_MS]; |
| size_t rx_size = PCM_BLK_SIZE_MS; |
| |
| void main(void) |
| { |
| int i; |
| uint32_t ms; |
| |
| if (!device_is_ready(led0.port)) { |
| printk("LED0 GPIO controller device is not ready\n"); |
| return; |
| } |
| |
| if (!device_is_ready(led1.port)) { |
| printk("LED1 GPIO controller device is not ready\n"); |
| return; |
| } |
| |
| #ifdef CONFIG_LP3943 |
| static const struct device *const ledc = DEVICE_DT_GET_ONE(ti_lp3943); |
| |
| if (!device_is_ready(ledc)) { |
| printk("Device %s is not ready\n", ledc->name); |
| return; |
| } |
| |
| /* turn all leds on */ |
| for (i = 0; i < NUM_LEDS; i++) { |
| led_on(ledc, i); |
| k_sleep(DELAY_TIME); |
| } |
| |
| /* turn all leds off */ |
| for (i = 0; i < NUM_LEDS; i++) { |
| led_off(ledc, i); |
| k_sleep(DELAY_TIME); |
| } |
| |
| #endif |
| |
| printk("ArgonKey test!!\n"); |
| |
| int ret; |
| |
| const struct device *const mic_dev = DEVICE_DT_GET_ONE(st_mpxxdtyy); |
| |
| if (!device_is_ready(mic_dev)) { |
| printk("Device %s is not ready\n", mic_dev->name); |
| return; |
| } |
| |
| ret = dmic_configure(mic_dev, &cfg); |
| if (ret < 0) { |
| printk("microphone configuration error\n"); |
| return; |
| } |
| |
| ret = dmic_trigger(mic_dev, DMIC_TRIGGER_START); |
| if (ret < 0) { |
| printk("microphone start trigger error\n"); |
| return; |
| } |
| |
| signal_sampling_started(); |
| |
| /* Acquire microphone audio */ |
| for (ms = 0U; ms < NUM_MS; ms++) { |
| ret = dmic_read(mic_dev, 0, &rx_block[ms], &rx_size, 2000); |
| if (ret < 0) { |
| printk("microphone audio read error\n"); |
| return; |
| } |
| } |
| |
| signal_sampling_stopped(); |
| |
| ret = dmic_trigger(mic_dev, DMIC_TRIGGER_STOP); |
| if (ret < 0) { |
| printk("microphone stop trigger error\n"); |
| return; |
| } |
| |
| /* print PCM stream */ |
| #ifdef PCM_OUTPUT_IN_ASCII |
| printk("-- start\n"); |
| int j; |
| |
| for (i = 0; i < NUM_MS; i++) { |
| uint16_t *pcm_out = rx_block[i]; |
| |
| for (j = 0; j < rx_size/2; j++) { |
| printk("0x%04x,\n", pcm_out[j]); |
| } |
| } |
| printk("-- end\n"); |
| #else |
| unsigned char pcm_l, pcm_h; |
| int j; |
| |
| for (i = 0; i < NUM_MS; i++) { |
| uint16_t *pcm_out = rx_block[i]; |
| |
| for (j = 0; j < rx_size/2; j++) { |
| pcm_l = (char)(pcm_out[j] & 0xFF); |
| pcm_h = (char)((pcm_out[j] >> 8) & 0xFF); |
| |
| z_impl_k_str_out(&pcm_l, 1); |
| z_impl_k_str_out(&pcm_h, 1); |
| } |
| } |
| #endif |
| |
| signal_print_stopped(); |
| } |