VKR 2022 DEMYKIN

stm32_try

stm32 learn for diploma VKR 2022

Create IoT prototype

Tst002 - ... old

Tst004 - code for stm32f746gz-nucleo, current

mqtt - mqtt-broker, client and sqlite db

MQTT

https://mosquitto.org/download/

LWIP

https://www.nongnu.org/lwip/2_1_x/index.html

Connection

bme280

oled 0.96 128x64

  +-----+------+-------++--------+
  | bme | oled | STM32 || color  |
  +-----+------+-------++--------+
  | gnd | GND  |   -   || brown  |
  | vcc | VCC  |   +   || red    |
  +     +      +-------++--------+
  |     | D0   |  PF7  || BLUE   |
  |     | D1   |  PF9  || PURPLE |
  |     | RES  |  PG0  || BLACK  |
  |     | DC   |  PG1  || WHITE  |
  |     | CS   |  PE3  || GREY   |
  +     +------+-------++--------+
  | scl |      |  PF1  || yello  |
  | sda |      |  PF0  || orange |
  | csb |      |   +   ||        |
  | sdo |      |       ||        |
  +-----+------+-------++--------+

Troubles

• sprint not show float
  The float formatting support is not enabled, check your MCU Settings from “Project Properties > C/C++ Build > Settings > Tool Settings”, or add manually “-u _printf_float ”In linker flags.
  (https://programmersought.com/article/90293972367/)

• some troubles with ETH
  On case start without eth-connection, after attach cords eth connetction not configured, need "reset"

Good look

more photos and videos of the prototypes