159 lines
5.1 KiB
ReStructuredText
159 lines
5.1 KiB
ReStructuredText
|
###############
|
|||
|
|
ESP32-DevKitC-1
|
|||
|
|
###############
|
|||
|
|
|
|||
|
|
The `ESP32-DevKitC-1`_ development board is one of Espressif's official boards. This board is based on the `ESP32-WROVER-E`_ module, with the `ESP32`_ as the core.
|
|||
|
|
|
|||
|
|
Specifications
|
|||
|
|
--------------
|
|||
|
|
|
|||
|
|
- Wi-Fi 802.11 b/g/n (802.11n up to 150 Mbps)
|
|||
|
|
- Bluetooth v4.2 BR/EDR and BLE specification
|
|||
|
|
- Built around ESP32 series of SoCs
|
|||
|
|
- Integrated 4 MB SPI flash
|
|||
|
|
- Integrated 8 MB PSRAM
|
|||
|
|
- Peripherals
|
|||
|
|
- SD card
|
|||
|
|
- UART
|
|||
|
|
- SPI
|
|||
|
|
- SDIO
|
|||
|
|
- I2C
|
|||
|
|
- LED PWM
|
|||
|
|
- Motor PWM
|
|||
|
|
- I2S
|
|||
|
|
- IR
|
|||
|
|
- Pulse Counter
|
|||
|
|
- GPIO
|
|||
|
|
- Capacitive Touch Sensor
|
|||
|
|
- ADC
|
|||
|
|
- DAC
|
|||
|
|
- Two-Wire Automotive Interface (TWAI®, compatible with ISO11898-1)
|
|||
|
|
- Onboard PCB antenna or external antenna connector
|
|||
|
|
|
|||
|
|
Header Block
|
|||
|
|
------------
|
|||
|
|
|
|||
|
|
.. note::
|
|||
|
|
Not all of the chip pins are exposed to the pin headers.
|
|||
|
|
|
|||
|
|
J1
|
|||
|
|
^^^
|
|||
|
|
=== ==== ===== ===================================
|
|||
|
|
No. Name Type Function
|
|||
|
|
=== ==== ===== ===================================
|
|||
|
|
1 3V3 P 3.3 V power supply
|
|||
|
|
2 EN I CHIP_PU, Reset
|
|||
|
|
3 IO36 I GPIO36, ADC1_CH0, S_VP
|
|||
|
|
4 IO39 I GPIO39, ADC1_CH3, S_VN
|
|||
|
|
5 IO34 I GPIO34, ADC1_CH6, VDET_1
|
|||
|
|
6 IO35 I GPIO35, ADC1_CH7, VDET_2
|
|||
|
|
7 IO32 I/O GPIO32, ADC1_CH4, TOUCH_CH9, XTAL_32K_P
|
|||
|
|
8 IO33 I/O GPIO33, ADC1_CH5, TOUCH_CH8, XTAL_32K_N
|
|||
|
|
9 IO25 I/O GPIO25, ADC1_CH8, DAC_1
|
|||
|
|
10 IO26 I/O GPIO26, ADC2_CH9, DAC_2
|
|||
|
|
11 IO27 I/O GPIO27, ADC2_CH7, TOUCH_CH7
|
|||
|
|
12 IO14 I/O GPIO14, ADC2_CH6, TOUCH_CH6, MTMS
|
|||
|
|
13 IO12 I/O GPIO12, ADC2_CH5, TOUCH_CH5, MTDI
|
|||
|
|
14 GND G Ground
|
|||
|
|
15 IO13 I/O GPIO13, ADC2_CH4, TOUCH_CH4, MTCK
|
|||
|
|
16 IO9 I/O GPIO9, D2
|
|||
|
|
17 IO10 I/O GPIO10, D3
|
|||
|
|
18 IO11 I/O GPIO11, CMD
|
|||
|
|
19 5V0 P 5 V power supply
|
|||
|
|
=== ==== ===== ===================================
|
|||
|
|
|
|||
|
|
J3
|
|||
|
|
^^^
|
|||
|
|
=== ==== ===== ====================================
|
|||
|
|
No. Name Type Function
|
|||
|
|
=== ==== ===== ====================================
|
|||
|
|
1 GND G Ground
|
|||
|
|
2 IO23 I/O GPIO23
|
|||
|
|
3 IO22 I/O GPIO22
|
|||
|
|
4 IO1 I/O GPIO1, U0TXD
|
|||
|
|
5 IO3 I/O GPIO3, U0RXD
|
|||
|
|
6 IO21 I/O GPIO21
|
|||
|
|
7 GND G Ground
|
|||
|
|
8 IO19 I/O GPIO19
|
|||
|
|
9 IO18 I/O GPIO18
|
|||
|
|
10 IO5 I/O GPIO5
|
|||
|
|
11 IO17 I/O GPIO17
|
|||
|
|
12 IO16 I/O GPIO16
|
|||
|
|
13 IO4 I/O GPIO4, ADC2_CH0, TOUCH_CH0
|
|||
|
|
14 IO0 I/O GPIO0, ADC2_CH1, TOUCH_CH1, Boot
|
|||
|
|
16 IO2 I/O GPIO2, ADC2_CH2, TOUCH_CH2
|
|||
|
|
17 IO15 I/O GPIO15, ADC2_CH3, TOUCH_CH3, MTDO
|
|||
|
|
17 IO8 I/O GPIO8, D1
|
|||
|
|
18 IO7 I/O GPIO7, D0
|
|||
|
|
19 IO6 I/O GPIO6, SCK
|
|||
|
|
=== ==== ===== ====================================
|
|||
|
|
|
|||
|
|
P: Power supply;
|
|||
|
|
I: Input;
|
|||
|
|
O: Output;
|
|||
|
|
T: High impedance.
|
|||
|
|
|
|||
|
|
Pin Layout
|
|||
|
|
----------
|
|||
|
|
|
|||
|
|
.. figure:: ../_static/esp32_devkitC_pinlayout.png
|
|||
|
|
:align: center
|
|||
|
|
:width: 600
|
|||
|
|
:alt: ESP32-DevKitC-1 (click to enlarge)
|
|||
|
|
:figclass: align-center
|
|||
|
|
|
|||
|
|
Strapping Pins
|
|||
|
|
--------------
|
|||
|
|
|
|||
|
|
Some of the GPIO's have important features during the booting process. Here is the list of the strapping pins on the `ESP32`_.
|
|||
|
|
|
|||
|
|
==== ========= ===================================================================== ============ ==============
|
|||
|
|
GPIO Default Function Pull-up Pull-down
|
|||
|
|
==== ========= ===================================================================== ============ ==============
|
|||
|
|
IO12 Pull-down Voltage of Internal LDO (VDD_SDIO) 1V8 3V3
|
|||
|
|
IO0 Pull-up Booting Mode SPI Boot Download Boot
|
|||
|
|
IO2 Pull-down Booting Mode Don't Care Download Boot
|
|||
|
|
IO15 Pull-up Enabling/Disabling Log Print During Booting and Timing of SDIO Slave U0TXD Active U0TXD Silent
|
|||
|
|
IO5 Pull-up Timing of SDIO Slave See `ESP32`_ See `ESP32`_
|
|||
|
|
==== ========= ===================================================================== ============ ==============
|
|||
|
|
|
|||
|
|
Be aware when choosing which pins to use.
|
|||
|
|
|
|||
|
|
Restricted Usage GPIO's
|
|||
|
|
-----------------------
|
|||
|
|
|
|||
|
|
Some of the GPIO's are used for the external flash and PSRAM. These GPIO's cannot be used:
|
|||
|
|
|
|||
|
|
==== ===================
|
|||
|
|
GPIO Shared Function
|
|||
|
|
==== ===================
|
|||
|
|
IO6 External SPI Flash
|
|||
|
|
IO7 External SPI Flash
|
|||
|
|
IO8 External SPI Flash
|
|||
|
|
IO9 External SPI Flash
|
|||
|
|
IO10 External SPI Flash
|
|||
|
|
IO11 External SPI Flash
|
|||
|
|
==== ===================
|
|||
|
|
|
|||
|
|
Other GPIO's are `INPUT ONLY` and cannot be used as output pin:
|
|||
|
|
|
|||
|
|
==== =========================
|
|||
|
|
GPIO Function
|
|||
|
|
==== =========================
|
|||
|
|
IO34 GPIO34, ADC1_CH6, VDET_1
|
|||
|
|
IO35 GPIO35, ADC1_CH7, VDET_2
|
|||
|
|
IO36 GPIO36, ADC1_CH0, S_VP
|
|||
|
|
IO39 GPIO39, ADC1_CH3, S_VN
|
|||
|
|
==== =========================
|
|||
|
|
|
|||
|
|
Resources
|
|||
|
|
---------
|
|||
|
|
|
|||
|
|
* `ESP32`_ (Datasheet)
|
|||
|
|
* `ESP32-WROVER-E`_ (Datasheet)
|
|||
|
|
* `ESP32-DevKitC`_ (Schematic)
|
|||
|
|
|
|||
|
|
.. _ESP32: https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf
|
|||
|
|
.. _ESP32-WROVER-E: https://www.espressif.com/sites/default/files/documentation/esp32-wrover-e_esp32-wrover-ie_datasheet_en.pdf
|
|||
|
|
.. _ESP32-DevKitC: https://dl.espressif.com/dl/schematics/esp32_devkitc_v4-sch.pdf
|