periph_conf.h File Reference

Peripheral MCU configuration for MH-ET LIVE MiniKit for ESP32. More...

Detailed Description

Peripheral MCU configuration for MH-ET LIVE MiniKit for ESP32.

The MH-ET LIVE MiniKit for ESP32 uses the ESP32-WROOM-32 module. It is a very interesting development kit as it is available in the stackable Wemos D1 Mini format. Thus, all shields for Wemos D1 mini (ESP8266 platform) can also be used with ESP32. All GPIOs are broken out so that it can be configured very flexibly.

For detailed information about the configuration of ESP32 boards, see section Common Peripherals.

Note
Most definitions can be overridden by an application-specific board configuration.
Author
Gunar Schorcht gunar.nosp@m.@sch.nosp@m.orcht.nosp@m..net

Definition in file periph_conf.h.

#include <stdint.h>
#include "periph_conf_common.h"
+ Include dependency graph for periph_conf.h:

Go to the source code of this file.

ADC and DAC channel configuration

#define ADC_GPIOS   { GPIO34, GPIO35, GPIO36, GPIO39 }
 Declaration of GPIOs that can be used as ADC channels. More...
 
#define DAC_GPIOS   { GPIO25 }
 Declaration of GPIOs that can be used as DAC channels. More...
 

I2C configuration

Only I2C interface I2C_DEV(0) is used.

Note
The GPIOs listed in the configuration are only initialized as I2C signals when module perpih_i2c is used. Otherwise they are not allocated and can be used for other purposes.
#define I2C0_SPEED   I2C_SPEED_FAST
 I2C bus speed of I2C_DEV(0)
 
#define I2C0_SCL   GPIO22
 SCL signal of I2C_DEV(0) [UEXT1].
 
#define I2C0_SDA   GPIO21
 SDA signal of I2C_DEV(0) [UEXT1].
 

PWM channel configuration

Note
As long as the according PWM device is not initialized with the pwm_init, the GPIOs declared for this device can be used for other purposes.
#define PWM0_GPIOS   { GPIO2, GPIO0, GPIO4, GPIO15 }
 PWM channels for device PWM_DEV(0)
 
#define PWM1_GPIOS   { }
 PWM_DEV(1) is not used.
 

SPI configuration

Note
The GPIOs listed in the configuration are first initialized as SPI signals when the corresponding SPI interface is used for the first time by either calling the spi_init_cs function or the spi_acquire function. That is, they are not allocated as SPI signals before and can be used for other purposes as long as the SPI interface is not used.
#define SPI0_CTRL   VSPI
 VSPI is used as SPI_DEV(0)
 
#define SPI0_SCK   GPIO18
 VSPI SCK.
 
#define SPI0_MISO   GPIO19
 VSPI MISO.
 
#define SPI0_MOSI   GPIO23
 VSPI MOSI.
 
#define SPI0_CS0   GPIO5
 VSPI CS0.
 

UART configuration

ESP32 provides 3 UART interaces at maximum:

UART_DEV(0) uses fixed standard configuration.
UART_DEV(1) is defined here.
UART_DEV(2) is not used.

#define UART0_TXD   GPIO1
 direct I/O pin for UART_DEV(0) TxD, can't be changed
 
#define UART0_RXD   GPIO3
 direct I/O pin for UART_DEV(0) RxD, can't be changed
 
#define UART1_TXD   GPIO10
 direct I/O pin for UART_DEV(1) TxD
 
#define UART1_RXD   GPIO9
 direct I/O pin for UART_DEV(1) RxD
 

Macro Definition Documentation

◆ ADC_GPIOS

#define ADC_GPIOS   { GPIO34, GPIO35, GPIO36, GPIO39 }

Declaration of GPIOs that can be used as ADC channels.

Note
As long as the GPIOs listed in ADC_GPIOS are not initialized as ADC channels with the adc_init function, they can be used for other purposes.

Definition at line 53 of file periph_conf.h.

◆ DAC_GPIOS

#define DAC_GPIOS   { GPIO25 }

Declaration of GPIOs that can be used as DAC channels.

Note
As long as the GPIOs listed in DAC_GPIOS are not initialized as DAC channels with the dac_init function, they can be used for other purposes.

Definition at line 64 of file periph_conf.h.