nrf.rst (1234B)
1 Nordic nRF boards (``microbit``) 2 ================================ 3 4 The `Nordic nRF`_ chips are a family of ARM-based System-on-Chip that 5 are designed to be used for low-power and short-range wireless solutions. 6 7 .. _Nordic nRF: https://www.nordicsemi.com/Products 8 9 The nRF51 series is the first series for short range wireless applications. 10 It is superseded by the nRF52 series. 11 The following machines are based on this chip : 12 13 - ``microbit`` BBC micro:bit board with nRF51822 SoC 14 15 There are other series such as nRF52, nRF53 and nRF91 which are currently not 16 supported by QEMU. 17 18 Supported devices 19 ----------------- 20 21 * ARM Cortex-M0 (ARMv6-M) 22 * Serial ports (UART) 23 * Clock controller 24 * Timers 25 * Random Number Generator (RNG) 26 * GPIO controller 27 * NVMC 28 * SWI 29 30 Missing devices 31 --------------- 32 33 * Watchdog 34 * Real-Time Clock (RTC) controller 35 * TWI (i2c) 36 * SPI controller 37 * Analog to Digital Converter (ADC) 38 * Quadrature decoder 39 * Radio 40 41 Boot options 42 ------------ 43 44 The Micro:bit machine can be started using the ``-device`` option to load a 45 firmware in `ihex format`_. Example: 46 47 .. _ihex format: https://en.wikipedia.org/wiki/Intel_HEX 48 49 .. code-block:: bash 50 51 $ qemu-system-arm -M microbit -device loader,file=test.hex