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Engineer’s Work Log: Implementing Button-Triggered Pairing for TWS Paired Speakers on Jieli AC696N

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  Issue A customer is developing TWS paired speakers using the Jieli AC696N development board. They need to implement a “button-triggered pairing” function, but are unsure which IO pin to connect the button to and how to configure it in the code. Analysis & Reproduction When reviewing the Jieli AC696N TWS paired speaker example project, we found that pairing is typically triggered by an AD key or a regular GPIO key. The example project reserves the pairing button logic, but does not explicitly state the hardware connection or software configuration mapping. The correct setup requires cross-referencing the schematic diagram and the key scan module in the code. Solution Open the TWS paired speaker example project and locate the key configuration section: Hardware connection : It is recommended to connect the pairing button to PB4 (which is defined as an AD key channel in the Jieli AC696N factory firmware). Different buttons are distinguished by their AD sampling values. Code conf...
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JL JieLi AC696N Series Development GPIO Control Encyclopedia: Modes, APIs, and Special Pins

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Introduction GPIO configuration seems simple, but there are plenty of cases where things go wrong. If the drive strength isn't set correctly, an LED might be too dim or not light at all. Without proper pull-up/pull-down configuration, button detection can be erratic. The most troublesome is the USB pin—it might default to a regular GPIO, and if you forget to switch its function, your PC won't recognize the device. The JL JieLi AC696N's GPIOs are quite versatile, with three drive strength levels (normal, strong, super strong) and various APIs. However, these functions are scattered throughout the documentation, and you often have to search for a while when using them. I've gone through the common GPIO configurations on the AC696N development board and organized them into a table, so you can quickly look them up when writing drivers. I. GPIO Operating Modes Input Mode: Can be configured as floating, pull-up, pull-down, or analog (for ADC). In input mode, output is disab...
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JL Forced Download Tool 2.0 – Full Tutorial for Jieli Chips

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  🔥  JL Forced Download Tool 2.0 – Full Tutorial for Jieli Chips  🔥 If you work with Jieli (JL) chips (Bluetooth audio, IoT, etc.), you'll eventually need to do a forced upgrade or firmware recovery. This video covers everything: ✅ USB wiring for forced download mode ✅ Connecting the JL USB Updater V2.0 and checking status ✅ Software burning operations ✅ How to verify the upgrade is complete ✅ Common problems: upgrade fails, cannot download – with solutions ✅ Important tips for beginners Watch the step-by-step guide here #Jieli #Firmware #Embedded #USBUpdater #JLForcedDownload
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JieLi AC6966B Development Board Peripheral Expansion: JL AC696N SPI Drives Flash, LCD, and RGB LEDs

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  Introduction For products like Bluetooth speakers and headphones, the chip's built-in resources are rarely enough—you need external Flash to store prompt tones, an LCD to display status, and a few RGB LEDs for ambiance. These are common requirements. The JL JieLi AC696N's SPI interface is perfect for the job—it's fast enough and can even simulate some special timing. However, the configuration differs when driving different peripherals with SPI, especially for LEDs like WS2812, which have strict timing requirements. A slight deviation and the lighting pattern goes wrong. 最小化图片 编辑图片 删除图片 I've recently gotten all three—Flash, LCD, and RGB LEDs—working on the AC696N development board. Here are the key configuration points, so you can directly reuse them when building your own products. I. Basic SPI Configuration In board_ac696x_demo.c , under SPI_PLATFORM_DATA_BEGIN , configure the SPI parameters: port group, clock, mode, and role (master). 最小化图片 编辑图片 删除图片 II. Applicati...
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