periph_conf.h File Reference

Peripheral configurations for ESP32-H2-DevKit boards. More...

Detailed Description

Peripheral configurations for ESP32-H2-DevKit boards.

The peripheral configurations in this file are valid for Espressif ESP32-H2-DevKitx boards that use the ESP32-H2-MINI-1x module.

Since the number of GPIOs and their possible uses on the ESP32-H2 are quite limited, these peripheral configurations can also be used for most other ESP32-H2 boards. Any modifications required for specific applications can be overridden by application-specific board configuration.

For detailed information about the peripheral configuration for ESP32-H2 boards, see section Common Peripherals.

Note

Most definitions can be overridden by an application-specific board configuration if necessary.

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   { GPIO1, GPIO2, GPIO3, GPIO4, GPIO5 }
	Declaration of GPIOs that can be used as ADC channels. More...

I2C configuration
For generic boards, only one I2C interface I2C_DEV(0) is defined. The GPIOs listed in the configuration are only initialized as I2C signals when module periph_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   GPIO10
	SCL signal of I2C_DEV(0)
#define	I2C0_SDA   GPIO11
	SDA signal of I2C_DEV(0)

PWM channel configuration
For generic boards, two PWM devices are configured. Generally, all output pins could be used as PWM channels.
#define	PWM0_GPIOS   { GPIO2, GPIO12, GPIO22 }
	Declaration of the channels for device PWM_DEV(0), at maximum PWM_CHANNEL_NUM_DEV_MAX. More...
#define	PWM1_GPIOS   { GPIO1, GPIO3, GPIO5 }
	Declaration of the channels for device PWM_DEV(1), at maximum PWM_CHANNEL_NUM_DEV_MAX. More...

SPI configuration
Note The GPIOs listed in the configuration are only 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   FSPI
	FSPI is used as SPI_DEV(0)
#define	SPI0_SCK   GPIO4
	FSPI SCK (pin FSPICLK)
#define	SPI0_MISO   GPIO5
	FSPI MISO (pin FSPIQ)
#define	SPI0_MOSI   GPIO0
	FSPI MOSI (pin FSPID)
#define	SPI0_CS0   GPIO1
	FSPI CS0 (pin FSPICS0)

UART configuration
ESP32-H2 provides 2 UART interfaces: UART_DEV(0) uses fixed standard configuration. UART_DEV(1) is not used.
#define	UART0_TXD   GPIO24
	direct I/O pin for UART_DEV(0) TxD, can't be changed
#define	UART0_RXD   GPIO23
	direct I/O pin for UART_DEV(0) RxD, can't be changed

Macro Definition Documentation

ADC_GPIOS

#define ADC_GPIOS   { GPIO1, GPIO2, GPIO3, GPIO4, GPIO5 }

Declaration of GPIOs that can be used as ADC channels.

For generic boards, all ADC pins that are broken out are declared 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 57 of file periph_conf.h.

PWM0_GPIOS

#define PWM0_GPIOS   { GPIO2, GPIO12, GPIO22 }

Declaration of the channels for device PWM_DEV(0), at maximum PWM_CHANNEL_NUM_DEV_MAX.

Note

PWM_DEV(0) contains only GPIOs that are not used for I2C, SPI or UART on this board. As long as the according PWM device is not initialized with the pwm_init function, the GPIOs declared for this device can be used for the other purposes.

Definition at line 100 of file periph_conf.h.

PWM1_GPIOS

#define PWM1_GPIOS   { GPIO1, GPIO3, GPIO5 }

Declaration of the channels for device PWM_DEV(1), at maximum PWM_CHANNEL_NUM_DEV_MAX.

Note

PMW_DEV(1) contains pins that are also used by SPI_DEV(0) or as ADC channel. However, as long as the according PWM device is not initialized with the pwm_init function, the GPIOs declared for this device can be used for the other purposes.

Definition at line 112 of file periph_conf.h.