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纳入固件源码、屏幕组件、nand_xfer 工具和文档。忽略本机构建产物、sdkconfig，以及含本机路径的依赖锁。 Co-authored-by: Cursor <[email protected]>
133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
#include "ns4168.h"
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#include <stdint.h>
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#include <stdlib.h>
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#include "driver/gpio.h"
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#include "driver/i2s.h"
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#include "esp_log.h"
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#include "esp_random.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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static const char *TAG = "ns4168";
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static void ns4168_white_noise_task(void *arg) //白噪音测试
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{
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uint8_t buffer[256];
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size_t bytes_written = 0;
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while (1) {
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for (int i = 0; i < (int)sizeof(buffer); i += 2) {
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uint16_t sample = (uint16_t)(esp_random() & 0xFFFF);
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buffer[i] = (uint8_t)(sample & 0xFF);
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buffer[i + 1] = (uint8_t)((sample >> 8) & 0xFF);
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}
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esp_err_t ret = i2s_write(NS4168_I2S_PORT, buffer, sizeof(buffer), &bytes_written, portMAX_DELAY);
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if (ret != ESP_OK) {
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ESP_LOGE(TAG, "i2s_write failed: %s", esp_err_to_name(ret));
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}
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vTaskDelay(pdMS_TO_TICKS(10));
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}
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}
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/**
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* @brief 初始化 NS4168 的 CTRL 引脚并将其拉高（选择右声道，且退出关断模式）
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*/
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void ns4168_ctrl_init(void)
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{
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// 1. 配置 GPIO 参数结构体
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gpio_config_t io_conf = {
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.pin_bit_mask = (1ULL << NS4168_CTRL_GPIO), // 选中 GPIO33
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.mode = GPIO_MODE_OUTPUT, // 设置为推挽输出
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.intr_type = GPIO_INTR_DISABLE, // 禁止中断
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.pull_up_en = GPIO_PULLUP_DISABLE, // 关闭内部上拉（不需要）
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.pull_down_en = GPIO_PULLDOWN_DISABLE, // 关闭内部下拉
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};
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// 2. 应用配置
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esp_err_t ret = gpio_config(&io_conf);
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if (ret != ESP_OK) {
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ESP_LOGE("NS4168", "GPIO33 配置失败！");
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return;
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}
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// 3. 输出高电平（3.3V）
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gpio_set_level(NS4168_CTRL_GPIO, 1);
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ESP_LOGI("NS4168", "NS4168 CTRL 引脚已拉高 (GPIO33)，选择右声道");
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}
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esp_err_t ns4168_i2s_init(void)
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{
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ns4168_ctrl_init();
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esp_err_t ret = ESP_OK;
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i2s_config_t i2s_cfg = {
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.mode = I2S_MODE_MASTER | I2S_MODE_TX,
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.sample_rate = NS4168_I2S_SAMPLE_RATE,
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.bits_per_sample = 16,
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.channel_format = NS4168_I2S_CHANNELS,
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.communication_format = I2S_COMM_FORMAT_STAND_I2S,
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.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
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.dma_buf_count = 16,
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.dma_buf_len = 1024,
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.tx_desc_auto_clear = true,
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.use_apll = false,
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.fixed_mclk = 0,
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};
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i2s_pin_config_t pin_cfg = {
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.mck_io_num = -1,
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.bck_io_num = NS4168_I2S_BCK_PIN,
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.ws_io_num = NS4168_I2S_WS_PIN,
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.data_out_num = NS4168_I2S_DOUT_PIN,
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.data_in_num = I2S_PIN_NO_CHANGE,
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};
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ret = i2s_driver_install(NS4168_I2S_PORT, &i2s_cfg, 0, NULL);
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if (ret != ESP_OK) {
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ESP_LOGE(TAG, "i2s_driver_install failed: %s", esp_err_to_name(ret));
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return ret;
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}
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ret = i2s_set_pin(NS4168_I2S_PORT, &pin_cfg);
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if (ret != ESP_OK) {
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ESP_LOGE(TAG, "i2s_set_pin failed: %s", esp_err_to_name(ret));
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return ret;
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}
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ret = i2s_zero_dma_buffer(NS4168_I2S_PORT);
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if (ret != ESP_OK) {
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ESP_LOGE(TAG, "i2s_zero_dma_buffer failed: %s", esp_err_to_name(ret));
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return ret;
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}
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ESP_LOGI(TAG, "NS4168 I2S init OK");
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return ESP_OK;
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}
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esp_err_t ns4168_start_white_noise_test(void)
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{
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esp_err_t ret = ns4168_i2s_init();
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if (ret != ESP_OK) {
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return ret;
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}
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BaseType_t task_ret = xTaskCreatePinnedToCore(ns4168_white_noise_task, "ns4168_noise", 4096, NULL, 5, NULL, 1);
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if (task_ret != pdPASS) {
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ESP_LOGE(TAG, "create white noise task failed");
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return ESP_FAIL;
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}
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return ESP_OK;
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}
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