1B-L475E-IOT01A IoT Node (``b-l475e-iot01a``)
2============================================
3
4The B-L475E-IOT01A IoT Node uses the STM32L475VG SoC which is based on
5ARM Cortex-M4F core. It is part of STMicroelectronics
6:doc:`STM32 boards </system/arm/stm32>` and more specifically the STM32L4
7ultra-low power series. The STM32L4x5 chip runs at up to 80 MHz and
8integrates 128 KiB of SRAM and up to 1MiB of Flash. The B-L475E-IOT01A board
9namely features 64 Mibit QSPI Flash, BT, WiFi and RF connectivity,
10USART, I2C, SPI, CAN and USB OTG, as well as a variety of sensors.
11
12Supported devices
13"""""""""""""""""
14
15Currently B-L475E-IOT01A machine's only supports the following devices:
16
17- Cortex-M4F based STM32L4x5 SoC
18- STM32L4x5 EXTI (Extended interrupts and events controller)
19- STM32L4x5 SYSCFG (System configuration controller)
20- STM32L4x5 RCC (Reset and clock control)
21- STM32L4x5 GPIOs (General-purpose I/Os)
22
23Missing devices
24"""""""""""""""
25
26The B-L475E-IOT01A does *not* support the following devices:
27
28- Serial ports (UART)
29- Analog to Digital Converter (ADC)
30- SPI controller
31- Timer controller (TIMER)
32
33See the complete list of unimplemented peripheral devices
34in the STM32L4x5 module : ``./hw/arm/stm32l4x5_soc.c``
35
36Boot options
37""""""""""""
38
39The B-L475E-IOT01A machine can be started using the ``-kernel``
40option to load a firmware. Example:
41
42.. code-block:: bash
43
44  $ qemu-system-arm -M b-l475e-iot01a -kernel firmware.bin
45
46