Payload SDK RTOS Sample. Test Environment: Hardware: STM32F407xG (External Crystal Frequency: 12MHz) IDE: Keil MDK v5.25.2.0 C Compiler: Armcc.exe V5.06 update 6 (build 750) Assembler: Armasm.exe V5.06 update 6 (build 750) Linker/Locator: ArmLink.exe V5.06 update 6 (build 750) Library Manager: ArmAr.exe V5.06 update 6 (build 750) Hex Converter: FromElf.exe V5.06 update 6 (build 750) Pin Definition: Console UART: PA9(TX), PA10(RX) Communication UART: PA2(TX), PA3(RX) Interactive UART: PD8(TX), PD9(RX) PPS PIN: PD2 Console Configuration: Baud Rate: 921600