ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

Disclosed in the present application are a firmware update method for an embedded device, an embedded device, a development end device, and a firmware update system for an embedded device. The embedded device acquires patch data from a source device and decompress the patch data to obtain original differential coding data; acquires data blocks in the original differential coding data in batches, and respectively perform corresponding operations on the data blocks according to a state identifier configured to indicate the currently performed operation, until differential decoding of the original differential coding data is accomplished.

An uplink transmission method operated by a station (STA) for transmitting data to an access point (AP) in a wireless local area network (WLAN), and a station device executing the method. The method includes: the station receiving a trigger frame from the access point, selecting one or more data packets from a plurality of transmit queues at the station and aggregating them into the A-MPDU to proceed with transmission to the access point based on the trigger frame. The selecting one or more data packets from the plurality of transmit queues includes: determining a priority value for each of the transmit queues; grouping the transmit queues at the station according to an access category of each transmit queue; and selecting the transmit queues and the data packets in the transmit queues according to a selection policy with respect to the transmit queues that are sorted according to the priority value.

A method for improving far-field speech interaction performance, and a far-field speech interaction system are provided. The method comprises: a smart device, during a network configuration process by soundwave signals, acquires a soundwave transmitted by a network configuration auxiliary device, and calculates a spatial acoustic parameter where the smart device is located. Furthermore, numerical values of the spatial acoustic parameter are selected within a set margin range, front-end speech processing parameter is updated according to the spatial acoustic parameter, and a soundwave signal energy value after front-end speech processing is calculated so that a spatial acoustic parameter corresponding to the minimum energy value is selected as a final spatial acoustic parameter. The final spatial acoustic parameter is transmitted to a speech recognition engine which selects an acoustic model trained by using a data set closest to the final spatial acoustic parameter as a far-field speech recognition model.

The present application discloses an automatic gain control method and apparatus for a voice interaction system, a system, and a computer-readable storage medium. The method comprises: receiving a voice signal; dividing the received voice signal into a plurality of sound signals of different sound sources by blind source separation; invoking a pre-trained wake-up word detection model to perform wake-up word detection on the sound signals of different sound sources respectively, to determine a sound signal in which a wake-up word is detected; calculating, based on the sound signal in which the wake-up word is detected, a gain required for automatic gain control of the voice interaction system, to adjust a volume of picked-up audio data within a preset range.

Disclosed is a wireless communication method including: acquiring coexistence request priorities of a plurality of communication services of each of a plurality of wireless communication modules; grouping the plurality of wireless communication modules according to a circuit resource contention relationship; sequentially sorting the coexistence request priorities of the wireless communication modules in each group to select a wireless communication module having the highest coexistence request priority; and to select a wireless communication module having the highest coexistence request priority; sorting the highest coexistence request priorities of the groups to designate the group with a maximum value of the highest coexistence request priority as a priority group; allocating a coexistence grant signal to the wireless communication module having a highest intra-group transmission priority; and allocating, for each of remaining groups, a coexistence grant signal to a wireless communication module having a highest intra-group reception priority in the group.

Disclosed in the present application are a firmware update method for an embedded device, an embedded device, a development end device, and a firmware update system for an embedded device. In response to that an update triggering module detects a triggering event for updating firmware of the embedded device, a data receiving module acquires transmission data from a source device, and writes update data for firmware update of the embedded device in the transmission data into a partition storing the transmission data. A data processing module processes the received update data according to update mode information in the transmission data to obtain new firmware data, and applies the new firmware data from a partition storing the new firmware data during the running of a bootloader program, so as to accomplish the firmware update.

Provided is a method sending an acknowledgment frame, wherein by receiving a data frame sent by the first access point and calculating the minimum transmission power of the present station, the maximum transmission power of the station is used as the initial transmission power; the pre-established queue of the maximum transmission powers of the overlapping basic service set is invoked; the queue is a set of maximum transmission powers which does not affect packet reception of one or more second stations and calculated by the first station; the maximum transmission power of the overlapping basic service set allowed in the pre-established queue is traversed sequentially; being greater than or equal to the minimum transmission power, the minimum value among the initial transmission power and one or more maximum transmission powers is taken as the final transmission power; and the acknowledgment frame is sent by using the determined final transmission power.

Disclosed in the present application discloses are a firmware update method for an embedded device and an embedded device. A first firmware partition, a second firmware partition and a bootloader partition are provided in a memory of the embedded device, wherein the first firmware partition is configured to store a first firmware, the second firmware partition is configured to store at least one second firmware, and the first firmware comprises a minimum code set for implementing remote firmware update of the second firmware. The method comprises: detecting a first triggering event for updating the second firmware; determining whether the currently running firmware is the first firmware, and if not, switching the currently running firmware to the first firmware; acquiring, from a source device, second firmware update data for updating the second firmware, and writing received second firmware update data into the second firmware partition.

Provided is a clock management apparatus wherein the clock management apparatus includes a clock synchronization signal generator, a plurality of clock gating units and clock frequency division modules; a synchronization signal of a predetermined period is generated by the clock synchronization signal generator; each of the clock gating units is connected in series with a corresponding one of the clock frequency division modules to form a signal processing branch; and the signal processing branches are connected in parallel to receive a source clock signal respectively, the clock gating unit controls the on-off switch of the signal processing branch, and the clock frequency division modules are configured to perform phase adjustment on the clock signals of the signal processing branches after receiving the synchronization signal output by the clock synchronization signal generator, and to adjust the clock signals of the signal processing branches from an asynchronous state to a synchronous state.

A method for evaluating an embedded project, a development machine and a system for evaluating an embedded project are disclosed. The method comprising the steps of: receiving a trigger command from a user, obtaining the manifest provided by a developer of the embedded project, dynamically generating an interactive web interface and displaying the interactive web interface to the user; obtaining the project file to be written by using the web application, writing the image file in the project file into the firmware storage area of the embedded board connected to the development machine, so as to run the embedded project on the embedded board for evaluation. The present disclosure uses the network to realize the evaluation of the embedded project, without a series of complicated operations such as copying, installation, and compilation on the development machine.