Code: Untitled.c Select all
#include <WiFi.h>
#include <SPIFFS.h>
#include <ArduinoWebsockets.h>
#include "driver/i2s.h"
#define I2S_WS_RX 27
#define I2S_SCK_RX 14
#define I2S_SD_RX 12
/**
#define I2S_WS_RX 27
#define I2S_SCK_RX 14
#define I2S_SD_RX 12
#define I2S_WS_RX 15
#define I2S_SCK_RX 2
#define I2S_SD_RX 13
*/
#define I2S_PORT I2S_NUM_1
#define I2S_SAMPLE_RATE (16000)
#define I2S_SAMPLE_BITS (32)
#define I2S_READ_LEN (1024 * 4)
#define I2S_CHANNEL_NUM (1)
const char* ssid = "@PHICOMM_3E";
const char* password = "asdasd110";
const char* websockets_server_host = "192.168.2.40";
const uint16_t websockets_server_port = 10086;
TaskHandle_t i2sADCHandler = NULL;
using namespace websockets;
WebsocketsClient client;
const i2s_config_t i2s_config_rx = {
.mode = i2s_mode_t(I2S_MODE_MASTER | I2S_MODE_RX),
.sample_rate = I2S_SAMPLE_RATE,
.bits_per_sample = i2s_bits_per_sample_t(I2S_SAMPLE_BITS),
.channel_format = I2S_CHANNEL_FMT_ONLY_LEFT,
.communication_format = i2s_comm_format_t(I2S_COMM_FORMAT_I2S | I2S_COMM_FORMAT_I2S_MSB),
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
.dma_buf_count = 64,
.dma_buf_len = 64
};
const i2s_pin_config_t pin_config_rx = {
.bck_io_num = I2S_SCK_RX,
.ws_io_num = I2S_WS_RX,
.data_out_num = I2S_PIN_NO_CHANGE,
.data_in_num = I2S_SD_RX
};
void setup() {
WiFi.mode(WIFI_STA);
WiFi.disconnect();
Serial.begin(115200);
Serial.setDebugOutput(true);
start_to_connect();
}
void start_to_connect(){
Serial.println("===================================================================");
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(2000);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());;
client.onEvent(onEventsCallback);
while(!client.connect(websockets_server_host, websockets_server_port, "/")){
delay(100);
Serial.print(".");
}
Serial.println("Socket Connected!");
}
void i2s_adc_data_scale(uint8_t * d_buff, uint8_t* s_buff, uint32_t len)
{
uint32_t j = 0;
uint32_t dac_value = 0;
for (int i = 0; i < len; i += 2) {
dac_value = ((((uint16_t) (s_buff[i + 1] & 0xf) << 8) | ((s_buff[i + 0]))));
d_buff[j++] = 0;
d_buff[j++] = dac_value * 256 / 2048 ;
}
}
static void i2s_adc_task(void *arg)
{
i2s_driver_install(I2S_NUM_1, &i2s_config_rx, 0, NULL);
i2s_set_pin(I2S_NUM_1, &pin_config_rx);
int i2s_read_len = I2S_READ_LEN;
size_t bytes_read;
char* i2s_read_buff = (char*) calloc(i2s_read_len, sizeof(char));
uint8_t* flash_write_buff = (uint8_t*) calloc(i2s_read_len, sizeof(char));
Serial.println(" *** Recording Start *** ");
while (1) {
i2s_read(I2S_PORT, (void*) i2s_read_buff, i2s_read_len, &bytes_read, portMAX_DELAY);
i2s_adc_data_scale(flash_write_buff, (uint8_t*)i2s_read_buff, i2s_read_len);
client.sendBinary((const char*)flash_write_buff, i2s_read_len);
Serial.println("");
Serial.print("SendBinary len = ");
Serial.print(i2s_read_len);
ets_printf("Never Used Stack Size: %u\n", uxTaskGetStackHighWaterMark(NULL));
}
free(i2s_read_buff);
i2s_read_buff = NULL;
free(flash_write_buff);
flash_write_buff = NULL;
}
void loop() {
}
void onEventsCallback(WebsocketsEvent event, String data) {
if(event == WebsocketsEvent::ConnectionOpened) {
Serial.println("Connnection Opened");
xTaskCreate(i2s_adc_task, "i2s_adc_task", 4096, NULL, 1, &i2sADCHandler);
} else if(event == WebsocketsEvent::ConnectionClosed) {
Serial.println("Connnection Closed");
ESP.restart();
}
}
以后会添加 热成像 以及 温度 湿度 风速 高度 等 模块，作为采集器，收集大自然信息
