(r3) HardwareAccessAndMicropython < AFNOG

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---+ Setting up and !IoT
<h2 align="center">Session 2: Micropython and<br />Hardware access<br /><br />Uli Raich<br />Formally CERN, Geneva, Switzerland</h2>
---+ The !WeMos D1 mini CPU card
| <img alt="esp8266.png" height="332" src="%ATTACHURL%/esp8266.png" title="esp8266.png" width="380" /> | <img alt="wemosEsp32.png" height="455" src="%ATTACHURL%/wemosEsp32.png" title="wemosEsp32.png" width="351" /> |
| <p> *ESP8266* </p> <p>cost: 2.21 Euros</p> | <p>ESP32</p> <p>cost: 4.1o Euros</p> |
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---+ CPU Pinout
| <img alt="esp8266Pinout.png" height="376" src="%ATTACHURL%/esp8266Pinout.png" title="esp8266Pinout.png" width="316" /> | <img alt="esp32Pinout-v2.png" height="327" src="%ATTACHURL%/esp32Pinout-v2.png" title="esp32Pinout-v2.png" width="250" /> |
| ESP8266 | ESP32 |
Please note: The pin numbers IOxx on the ESP32 correspond

to the GPIO pin numbers

The pins in the white fields go to the !WeMos D1 mini bus

and are also available on the ESP8266

The other pins are only accessible on the ESP32 CPU card

The pin numbers Dx do not correspond to GPIO pin numbers!

Please refer to the next slide for correspondence

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---+ CPU pinouts for reference

<img alt="cpuPinouts.png" height="535" src="%ATTACHURL%/cpuPinouts.png" title="cpuPinouts.png" width="459" />

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---+ Meaning of pins on ESP8266

| <ul> <li>GPIO: General Purpose Input Output. <br />Drives a single digital line which <br />can be programmed input or output</li> </ul><ul> <li>SCL/SDA: The !I2C bus:a 2 wire bus <br />interfacing sensors or actuators to the CPU<br /><br /></li> <li>SCL,MISO,MOSI,SS: SPI<br />the Serial Peripheral Interface. <br />Used fast communication with external device</li> </ul> | <img alt="esp8266PinMeaning.png" height="358" src="%ATTACHURL%/esp8266PinMeaning.png" title="esp8266PinMeaning.png" width="400" /> |

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---+ Meaning of pins on ESP32

%ATTACHURL%/esp32-pinout-chip-ESP-WROOM-32.png

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---+ How to program the processor
| <img alt="esp8266Programming.png" src="%ATTACHURL%/esp8266Programming.png" title="esp8266Programming.png" /> | Several development tools are available:<br /> <ul> <li>ESP_IDF: The official Espressif development tool.<br />Includes a gcc compiler for the ESP8266 and the ESP32</li> </ul><p>Please see<br /> [[%20https://docs.espressif.com/projects/esp-idf/en/latest/][https://docs.espressif.com/projects/esp-idf/en/latest/]]<br /><br /></p> <ul> <li>The Arduino IDENeeds extensions for these processors <br />and the different CPU boards</li> </ul><p>see:<br /> [[https://www.arduino.cc/en/Main/Software][https://www.arduino.cc/en/Main/Software<br /><br />]]</p> <ul> <li>MicroPython</li> </ul><p>see:<br /> https://micropython-docs-esp32.readthedocs.io/en/esp32_doc/ <br />and<br /> https://github.com/micropython/micropython/</p> |

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%USERSIG{UliRaich - 2019-05-13}%

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Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who
odp	afnog19-ws-session2.odp	r1	manage	6431.5 K	2019-05-14 - 09:01	UliRaich
png	cpuPinouts.png	r1	manage	34.1 K	2019-05-13 - 20:32	UliRaich
png	esp32-pinout-chip-ESP-WROOM-32.png	r1	manage	137.4 K	2019-05-14 - 09:50	UliRaich
png	esp32Pinout-v2.png	r1	manage	151.2 K	2019-05-14 - 09:01	UliRaich
png	esp8266.png	r1	manage	116.1 K	2019-05-13 - 20:27	UliRaich
png	esp8266PinMeaning.png	r2 r1	manage	155.3 K	2019-05-14 - 09:43	UliRaich
png	esp8266Pinout.png	r1	manage	176.4 K	2019-05-13 - 20:41	UliRaich
png	esp8266Programming.png	r1	manage	108.3 K	2019-05-14 - 09:59	UliRaich
png	wemosEsp32.png	r1	manage	213.3 K	2019-05-13 - 20:29	UliRaich

Topic revision: r3 - 2019-05-14 - UliRaich