What's the way to go board for IoT with Wifi/TCPIP/UDP and gpios (adc) for sensor?

[Massimiliano Gilli]

Posted on April 04, 2017 at 12:46

Hello,

im quite new to the STM32 ecosystem and i'm looking for a board to start my IoT project.

I found the SWPF01SA module but it is not clear if it is what i want (can't fine much on GPIO).

I assume it doesn't have an ADC so i looked for a dev board. But which one?

Regards,

#spwf #wifi

[Massimiliano Gilli]

Posted on April 04, 2017 at 14:38

Regarding the ADC stuff, i was indeed wrong the specification is saying GPIO[8] I/O 4 General purpose input/output ADC

So aside for that is it still the IoT chip that an entry user should look for?

[S.Ma]

Posted on April 04, 2017 at 19:53

Seems one of the following:

https://www.linkedin.com/pulse/st-micro-selects-inventek-systems-sts-devcon-iot-work-al-serpa

 

Or

http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-tools/stm32-mcu-eval-tools/stm32-mcu-discovery-kits/32f723ediscovery.html

 

Using esp-01 or wifi grove/click boards

Same thing for this one:

http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-tools/stm32-mcu-eval-tools/stm32-mcu-discovery-kits/32l496gdiscovery.html

 

Or this one

https://www.digikey.com/product-detail/en/stmicroelectronics/STM32F413H-DISCO/497-17180-ND/6709885

 

[AvaTar]

Posted on April 05, 2017 at 09:48

I assume it doesn't have an ADC so i looked for a dev board. But which one?

I did not yet come across a STM32 without ADC.

They all use to have one or more internal ADCs, the only question is, are they usable.

All variants use pin-multiplexing, the less pins the package has, the 'worse'.

If the board designer hooked the pins up for another peripheral (like USB), you have probably lost.

This means, cross-check the board schematics with the datasheet of the MCU.

For IoT, you will need Ethernet. Select boards with ethernet, and check those.

KIC8462852 had been posting some good proposals.

[S.Ma]

Posted on April 05, 2017 at 11:06

The Discovery Kits with STMod+ extension (Disco L496/F723) will guarante at least one ADC input pin and PWM at fixed location. By looking at the alternate functions on the connector, more ADC/DAC/PWM seems there without conflict with Arduino connector.

[AvaTar]

Posted on April 05, 2017 at 11:31

Since the OP was not very specific about his requirements (number of ADC channels, resolution, rates, etc.), I assume he can manage the search/selection process himself.

[Massimiliano Gilli]

Posted on April 05, 2017 at 11:33

Yes but those boards are huge, the NodeMCU ESP8266 or Particle Photon is the product-size i'm looking for but i wanted something more 'professional' and  highly certified.