HLK-M50 RDA5981 Serial Port Wireless WIFI Transparent Transmission Module Secondary Development Voice Remote Control

Introduction: The HLK-M50 WiFi module is a low-power chip that integrates MCU, PMU, clock, and IEEE802.11b / g / n MAC / PHY / radio. Module supports 2.4GHz IEEE802.11b / g / n, USB Host and Device 2.0 HS, Micro SD card (SDMMC interface) UART, I2C, I2S, PMW, SPI and other interfaces, analog keys (GPADC0). Software using mbedOS5.1 operating system, has two versions : WiFi serial transmission function version and secondary development. Second development version provides rich development interface, users can develop their own applications based on mbedOS through C or C ++. Development kit to provide a large number of guidance documents and test routines to facilitate rapid development of users. Specifications: Parameters Project Memory System Built-in RAM 96K Bytes User SRAM 32K Bytes icache Built-in Flash Built-in 8Mbit flash Interface: Item Parameter GPIO supports up to 17 GPIO ports, of which 16 can trigger interrupts Serial performance supports up to 2 serial ports, baud rate can be configured to 1200bps - 4Mbps I2S Interface Features Supports 2 I2S Interfaces; I2S Host BCLK Supports 96/192/384/512 / 44.1 / 88.2KHz; Supports 16/32 bit per channel, Data Format Configurable as 16/20 / 24bit or Software Configurable Maximum 24bit per channel) I2C Interface Performance Supports one I2C standard interface. Support master or slave operation. There are 3 standard speed modes: 1. Standard mode (