Implemented:
3 text comands "AT+" formats:
AT+LEDx=1 (x - num of led (4 or 5)) - toggle pin(LED)
AT+TGx=1 (x - num of led (4 or 5)) - cyclic fast toggle pin(LED)
AT+TGL=x (x - num of led (4 or 5)) - cyclic slow toggle pin(LED)

Use FreeRTOS v2