/* * Copyright (C) 2018 Gunar Schorcht * * This file is subject to the terms and conditions of the GNU Lesser * General Public License v2.1. See the file LICENSE in the top level * directory for more details. */ /** * @ingroup boards_esp32_olimex-esp32-evb * @brief Peripheral MCU configuration for Olimex ESP32-EVB (ESP32-GATEWAY) * @{ * * This configuration is for the Olimex ESP32-EVB, but can also be used * for the Olimex ESP32-GATEWAY. To use this board definition with Olimex * ESP32-GATEWAY, add * ``` * USEMODULE += olimex_esp32_gateway * ``` * to the makefile of the application to use the according default board * configuration. * * For detailed information about the configuration of ESP32 boards, see * section \ref esp32_comm_periph "Common Peripherals". * * @note * Most definitions can be overridden by an \ref esp32_app_spec_conf * "application-specific board configuration". * * @author Gunar Schorcht * @file */ #ifndef PERIPH_CONF_H #define PERIPH_CONF_H #include #ifdef __cplusplus extern "C" { #endif /** * @name ADC and DAC channel configuration * * @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. * @{ */ /** * @brief 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. */ #ifndef ADC_GPIOS #if MODULE_OLIMEX_ESP32_GATEWAY #define ADC_GPIOS { GPIO32, GPIO35, GPIO36, GPIO39 } #else /* MODULE_OLIMEX_ESP32_GATEWAY */ #define ADC_GPIOS { } #endif /* MODULE_OLIMEX_ESP32_GATEWAY */ #endif /* ADC_GPIOS */ /** Olimex ESP32-EVB has no GPIOs left that might be used as DAC channels. */ #ifndef DAC_GPIOS #define DAC_GPIOS { } #endif /** @} */ /** * @name CAN configuration * * Olimex ESP32-EVB has a CAN interface including a CAN tranceiver on board. */ #ifndef MODULE_OLIMEX_ESP32_GATEWAY #define CAN_TX GPIO5 /**< CAN TX tranceiver signal */ #define CAN_RX GPIO35 /**< CAN RX tranceiver signal */ #endif /** * @name I2C configuration * * Olimex ESP32-EVB/GATEWAY have one I2C interface ```I2C_DEV(0)```. However, * they use different GPIOs. Olimex ESP32-EVB, the interface is also available * at the [UEXT] connector. * * @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. * * @{ */ #ifndef I2C0_SPEED #define I2C0_SPEED I2C_SPEED_FAST /**< I2C bus speed of I2C_DEV(0) */ #endif #ifdef MODULE_OLIMEX_ESP32_GATEWAY #ifndef I2C0_SCL #define I2C0_SCL GPIO16 /**< SCL signal of I2C_DEV(0) [UEXT] */ #endif #ifndef I2C0_SDA #define I2C0_SDA GPIO17 /**< SDA signal of I2C_DEV(0) [UEXT] */ #endif #else /* MODULE_OLIMEX_ESP32_GATEWAY */ #ifndef I2C0_SCL #define I2C0_SCL GPIO16 /**< SCL signal of I2C_DEV(0) */ #endif #ifndef I2C0_SDA #define I2C0_SDA GPIO13 /**< SDA signal of I2C_DEV(0) */ #endif #endif /* MODULE_OLIMEX_ESP32_GATEWAY */ /** @} */ /** * @name 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. * * @{ */ /** * In DOUT and DIO flash mode, GPIO9 and GIO10 are available and can be used * as PWM channels with ```PWM_DEV(0)```. */ #ifndef PWM0_GPIOS #if FLASH_MODE_DOUT || FLASH_MODE_DIO || DOXYGEN #define PWM0_GPIOS { GPIO9, GPIO10 } #else #error Configuration problem: Flash mode qio or qout is used, \ GPIO9 and GPIO10 cannot be used as PWM channels as configured #define PWM0_GPIOS { } #endif #endif /** PWM_DEV(1) is not used */ #ifndef PWM1_GPIOS #define PWM1_GPIOS { } #endif /** @} */ /** * @name SPI configuration * @{ */ /** * @brief HSPI is used as SPI_DEV(0) * * It is available at the [UEXT] connector on Olimex ESP32-EVB. * * Although the SD card interface of the Olimex ESP32-EVB is also available at * the ```SPI_DEV(0)``` interface, it does not have a CS signal. Therefore, * it cannot be used in SPI mode with the ```sdcard_spi``` module. Olimex * ESP32-GATEWAY uses the integrated SD card interface with another GPIO for * the CS signal. * * @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. */ #ifndef SPI0_DEV #define SPI0_DEV HSPI #endif #ifndef SPI0_SCK #define SPI0_SCK GPIO14 /**< SCK [UEXT] / SD card interface] */ #endif #ifndef SPI0_MISO #define SPI0_MISO GPIO2 /**< MISO [UEXT] / SD card interface] */ #endif #ifndef SPI0_MOSI #define SPI0_MOSI GPIO15 /**< MOSI [UEXT] / SD Card interface] */ #endif #ifndef SPI0_CS0 #ifndef MODULE_OLIMEX_ESP32_GATEWAY #define SPI0_CS0 GPIO17 /**< CS0 [UEXT] */ #else /* MODULE_OLIMEX_ESP32_GATEWAY */ #define SPI0_CS0 GPIO13 /**< CS0 SD Card interface */ #endif /* MODULE_OLIMEX_ESP32_GATEWAY */ #endif /* SPI0_CS0 */ /** @} */ /** * @name 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.
* * If the board definition is used for Olimex EVB-GATEWAY, the UART_DEV(1) * interface is not available. * * @{ */ #define UART0_TXD GPIO1 /**< direct I/O pin for UART_DEV(0), can't be changed */ #define UART0_RXD GPIO3 /**< direct I/O pin for UART_DEV(0), can't be changed */ #ifndef UART1_TXD #define UART1_TXD GPIO4 /**< UART_DEV(1) TxD */ #endif #ifndef UART1_RXD #define UART1_RXD GPIO36 /**< UART_DEV(1) RxD */ #endif /** @} */ #ifdef __cplusplus } /* end extern "C" */ #endif /* include common peripheral definitions as last step */ #include "periph_conf_common.h" #endif /* PERIPH_CONF_H */ /** @} */