mirror of
https://github.com/0xFEEDC0DE64/arduino-esp32.git
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159 lines
5.1 KiB
ReStructuredText
159 lines
5.1 KiB
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###############
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ESP32-DevKitC-1
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###############
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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.
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Specifications
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--------------
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- Wi-Fi 802.11 b/g/n (802.11n up to 150 Mbps)
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- Bluetooth v4.2 BR/EDR and BLE specification
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- Built around ESP32 series of SoCs
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- Integrated 4 MB SPI flash
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- Integrated 8 MB PSRAM
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- Peripherals
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- SD card
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- UART
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- SPI
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- SDIO
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- I2C
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- LED PWM
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- Motor PWM
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- I2S
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- IR
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- Pulse Counter
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- GPIO
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- Capacitive Touch Sensor
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- ADC
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- DAC
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- Two-Wire Automotive Interface (TWAI®, compatible with ISO11898-1)
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- Onboard PCB antenna or external antenna connector
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Header Block
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------------
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.. note::
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Not all of the chip pins are exposed to the pin headers.
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J1
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^^^
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=== ==== ===== ===================================
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No. Name Type Function
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=== ==== ===== ===================================
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1 3V3 P 3.3 V power supply
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2 EN I CHIP_PU, Reset
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3 IO36 I GPIO36, ADC1_CH0, S_VP
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4 IO39 I GPIO39, ADC1_CH3, S_VN
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5 IO34 I GPIO34, ADC1_CH6, VDET_1
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6 IO35 I GPIO35, ADC1_CH7, VDET_2
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7 IO32 I/O GPIO32, ADC1_CH4, TOUCH_CH9, XTAL_32K_P
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8 IO33 I/O GPIO33, ADC1_CH5, TOUCH_CH8, XTAL_32K_N
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9 IO25 I/O GPIO25, ADC1_CH8, DAC_1
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10 IO26 I/O GPIO26, ADC2_CH9, DAC_2
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11 IO27 I/O GPIO27, ADC2_CH7, TOUCH_CH7
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12 IO14 I/O GPIO14, ADC2_CH6, TOUCH_CH6, MTMS
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13 IO12 I/O GPIO12, ADC2_CH5, TOUCH_CH5, MTDI
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14 GND G Ground
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15 IO13 I/O GPIO13, ADC2_CH4, TOUCH_CH4, MTCK
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16 IO9 I/O GPIO9, D2
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17 IO10 I/O GPIO10, D3
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18 IO11 I/O GPIO11, CMD
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19 5V0 P 5 V power supply
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=== ==== ===== ===================================
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J3
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^^^
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=== ==== ===== ====================================
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No. Name Type Function
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=== ==== ===== ====================================
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1 GND G Ground
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2 IO23 I/O GPIO23
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3 IO22 I/O GPIO22
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4 IO1 I/O GPIO1, U0TXD
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5 IO3 I/O GPIO3, U0RXD
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6 IO21 I/O GPIO21
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7 GND G Ground
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8 IO19 I/O GPIO19
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9 IO18 I/O GPIO18
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10 IO5 I/O GPIO5
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11 IO17 I/O GPIO17
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12 IO16 I/O GPIO16
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13 IO4 I/O GPIO4, ADC2_CH0, TOUCH_CH0
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14 IO0 I/O GPIO0, ADC2_CH1, TOUCH_CH1, Boot
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16 IO2 I/O GPIO2, ADC2_CH2, TOUCH_CH2
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17 IO15 I/O GPIO15, ADC2_CH3, TOUCH_CH3, MTDO
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17 IO8 I/O GPIO8, D1
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18 IO7 I/O GPIO7, D0
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19 IO6 I/O GPIO6, SCK
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=== ==== ===== ====================================
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P: Power supply;
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I: Input;
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O: Output;
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T: High impedance.
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Pin Layout
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----------
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.. figure:: ../_static/esp32_devkitC_pinlayout.png
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:align: center
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:width: 600
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:alt: ESP32-DevKitC-1 (click to enlarge)
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:figclass: align-center
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Strapping Pins
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--------------
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Some of the GPIO's have important features during the booting process. Here is the list of the strapping pins on the `ESP32`_.
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==== ========= ===================================================================== ============ ==============
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GPIO Default Function Pull-up Pull-down
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==== ========= ===================================================================== ============ ==============
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IO12 Pull-down Voltage of Internal LDO (VDD_SDIO) 1V8 3V3
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IO0 Pull-up Booting Mode SPI Boot Download Boot
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IO2 Pull-down Booting Mode Don't Care Download Boot
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IO15 Pull-up Enabling/Disabling Log Print During Booting and Timing of SDIO Slave U0TXD Active U0TXD Silent
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IO5 Pull-up Timing of SDIO Slave See `ESP32`_ See `ESP32`_
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==== ========= ===================================================================== ============ ==============
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Be aware when choosing which pins to use.
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Restricted Usage GPIO's
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-----------------------
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Some of the GPIO's are used for the external flash and PSRAM. These GPIO's cannot be used:
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==== ===================
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GPIO Shared Function
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==== ===================
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IO6 External SPI Flash
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IO7 External SPI Flash
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IO8 External SPI Flash
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IO9 External SPI Flash
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IO10 External SPI Flash
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IO11 External SPI Flash
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==== ===================
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Other GPIO's are `INPUT ONLY` and cannot be used as output pin:
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==== =========================
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GPIO Function
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==== =========================
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IO34 GPIO34, ADC1_CH6, VDET_1
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IO35 GPIO35, ADC1_CH7, VDET_2
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IO36 GPIO36, ADC1_CH0, S_VP
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IO39 GPIO39, ADC1_CH3, S_VN
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==== =========================
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Resources
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---------
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* `ESP32`_ (Datasheet)
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* `ESP32-WROVER-E`_ (Datasheet)
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* `ESP32-DevKitC`_ (Schematic)
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.. _ESP32: https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf
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.. _ESP32-WROVER-E: https://www.espressif.com/sites/default/files/documentation/esp32-wrover-e_esp32-wrover-ie_datasheet_en.pdf
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.. _ESP32-DevKitC: https://dl.espressif.com/dl/schematics/esp32_devkitc_v4-sch.pdf
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