🔬 BT401 I2S Module - Comprehensive AT Command & Firmware Upgrade Test #B...



💻 [Deep Dive: Mastering the BT401 I2S Audio Module]

⚙️ Complete Developer Walkthrough
A 4m35s guide to full module control:
🔹 Part 1: AT Command Configuration

  • Set baud rate (115200 → 256000)

  • Adjust volume levels (30 → 15)

  • Disable UART echo
    ✅ All settings survive power cycles

🔹 Part 2: Firmware Upgrade

  • Use official tool to upgrade

  • Switch between I2S Slave & I2S Master modes

  • Verify upgrade success instantly

🎯 Why Developers Trust BT401:
High configurability | Reliable field updates | Robust performance

#BT401 #I2SModule #FirmwareUpgrade #EmbeddedAudio #DeveloperTools

👉 SWIPE for the step-by-step technical demo!


评论

发表评论

此博客中的热门博文

Jieli Bluetooth Smart Speaker Development: Common Issues with AC696N SoCs

图片
During the development of Bluetooth smart speakers using Jieli's AC696N series SoCs, developers may encounter several common issues. This article summarizes these problems and provides corresponding solutions to help streamline the development process. 1. AC696N V1.7.0: Unable to Display SDK Version Number via Test Box When TWS is Enabled Problem Description: After enabling TWS (True Wireless Stereo) in AC696N V1.7.0 SDK, the test box cannot display the SDK version number. Solution: Register a new callback function to handle the SDK version information request. // Re-register a callback function bt_testbox_ex_info_get_handle_register(TESTBOX_INFO_SDK_VERSION, user_bt_get_sdk_ver_info); // Callback function example: u8 user_bt_get_sdk_ver_info(u8 len) { y_printf("Getting version number\n"); const char *p = sdk_version_info_get(); if (len) { *len = strlen(p); } log_info("sdk_ver:%s %x\n", p, *len); return (u8 *)p; } After Modification: The SDK version numb...
阅读全文

KT148A Voice Chip: A Powerful Tool to Enhance the User Experience of Smart Soymilk Makers

图片
The KT148A voice chip from Qingyue Electronics significantly enhances the user experience of smart soymilk makers with its unique advantages. It has a large - capacity voice storage space, allows users to change voices by themselves, features a low - power design, and can be reprogrammed. Smart soymilk makers emerged from modern people's pursuit of a healthy lifestyle and a convenient home life. In the fast - paced urban life, soy milk is popular among consumers of all ages due to its rich nutrition and easy absorption. With the advancement of technology and the popularity of intelligence, smart soymilk makers not only meet the demand for a healthy diet but also integrate elements of convenient operation and intelligent experience. The KT148A voice chip adds a voice - broadcasting function to it, further improving the user experience. The KT148A is a 32 - bit DSP voice chip with a standard SOP8 package. It has an internal 420KByte voice space, can support a maximum voice length of ...
阅读全文

KT148A Voice Chip Issue: Difficult to Play with Code Sending - Normal Playback After Grounding Pin 4, What’s the Reason?

图片
Problem Description: Hello, we’ve encountered an issue and would appreciate your support: With the KT148A chip, after powering on, sending the code rarely triggers playback. However, if we use tweezers to briefly short Pin 4 (PB0) to ground and then send the code again, playback works normally. What could be causing this? Based on the observed behavior, it’s highly likely an issue with the timing of one-wire communication,  particularly with the start signal, which may be too short.  Let’s analyze this in detail and review the KT148A schematic as follows: 1. Pin 4 (PB0) of the Chip: PB0 is a test pin with the default factory function of triggering wake-up and playback when grounded. 2. Customer Description: When the customer uses tweezers to short PB0 (Pin 4) to ground, it follows this principle. The shorting action actually performs two operations: Action 1: The KT148A detects a falling edge signal, wakes up, exits low-power mode, and enters full-speed operation. Action 2: Th...
阅读全文