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 machines support 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- STM32L4x5 USARTs, UARTs and LPUART (Serial ports)
23- optional 8x8 led display (based on DM163 driver)
24
25Missing devices
26"""""""""""""""
27
28The B-L475E-IOT01A does *not* support the following devices:
29
30- Analog to Digital Converter (ADC)
31- SPI controller
32- Timer controller (TIMER)
33
34See the complete list of unimplemented peripheral devices
35in the STM32L4x5 module : ``./hw/arm/stm32l4x5_soc.c``
36
37Boot options
38""""""""""""
39
40The B-L475E-IOT01A machine can be started using the ``-kernel``
41option to load a firmware. Example:
42
43.. code-block:: bash
44
45  $ qemu-system-arm -M b-l475e-iot01a -kernel firmware.bin
46
47