Fzahn (Diskussion | Beiträge) |
Ollo (Diskussion | Beiträge) (Boot Modi) |
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* The ESP8266 chip is made by Espressif | * The ESP8266 chip is made by Espressif | ||
* Modules bearing this chip are made by various manufacturers | * Modules bearing this chip are made by various manufacturers | ||
== Boot Modi == | |||
{| class="wikitable" | |||
|- | |||
!GPIO15 | |||
!GPIO0 | |||
!GPIO2 | |||
!Mode | |||
!Beschreibung | |||
!Warum? | |||
|- | |||
|GND | |||
|GND | |||
|3.3V | |||
|UART | |||
|Serieller Boot | |||
|Neue Firmware kann heruntergeladen werden | |||
|- | |||
| GND | |||
| 3.3V | |||
| 3.3V | |||
| Flash | |||
| Startet vom internen Flash | |||
| Firmware starten | |||
|- | |||
| 3.3V | |||
| - | |||
| - | |||
| SDIO | |||
| Bootet von externen SD Karte | |||
| | |||
|- | |||
|} | |||
Der ESP-01 hat GPIO15 intern schon fest auf GND verschalten. Darum können bei dieser Variante nur die ersten beiden Boot-Modi ausgewählt werden. | |||
* [https://github.com/esp8266/esp8266-wiki/wiki/Boot-Process Quelle] | |||
== Projekte == | == Projekte == | ||
Version vom 5. Januar 2016, 11:24 Uhr
ESP8266
Hardware
- It's a wireless SoC
- It has GPIO, I2C, ADC, SPI, PWM and some more
- It's running at 80MHz
- 64KBytes of instruction RAM
- 96KBytes of data RAM
- 64KBytes boot ROM
- It has a Winbond W25Q40BVNIG SPI flash
- It's a RISC architecture
- The core is a 106micro Diamond Standard core (LX3) made by Tensilica
- The ESP8266 chip is made by Espressif
- Modules bearing this chip are made by various manufacturers
Boot Modi
| GPIO15 | GPIO0 | GPIO2 | Mode | Beschreibung | Warum? |
|---|---|---|---|---|---|
| GND | GND | 3.3V | UART | Serieller Boot | Neue Firmware kann heruntergeladen werden |
| GND | 3.3V | 3.3V | Flash | Startet vom internen Flash | Firmware starten |
| 3.3V | - | - | SDIO | Bootet von externen SD Karte |
Der ESP-01 hat GPIO15 intern schon fest auf GND verschalten. Darum können bei dieser Variante nur die ersten beiden Boot-Modi ausgewählt werden.