mirror of
https://github.com/ByteWelder/Tactility.git
synced 2026-02-18 10:53:17 +00:00
a1c835e073
* **New Features** * ESP32 I2S controller support: runtime-configurable digital audio I/O with read/write/set/get operations and multiple formats. * **Board Support** * LilyGO T-Deck device tree entry added to enable I2S peripheral pin configuration. * **Documentation** * New/updated bindings and descriptors for I2S, I2C, GPIO, and root nodes. * **Other** * Added GPIO "no pin" sentinel and exposed I2S controller API symbols.
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
#pragma once
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <tactility/device.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#define GPIO_OPTIONS_MASK 0x1f
|
|
|
|
#define GPIO_ACTIVE_HIGH (0 << 0)
|
|
#define GPIO_ACTIVE_LOW (1 << 0)
|
|
|
|
#define GPIO_DIRECTION_INPUT (1 << 1)
|
|
#define GPIO_DIRECTION_OUTPUT (1 << 2)
|
|
#define GPIO_DIRECTION_INPUT_OUTPUT (GPIO_DIRECTION_INPUT | GPIO_DIRECTION_OUTPUT)
|
|
|
|
#define GPIO_PULL_UP (0 << 3)
|
|
#define GPIO_PULL_DOWN (1 << 4)
|
|
|
|
#define GPIO_INTERRUPT_BITMASK (0b111 << 5) // 3 bits to hold the values [0, 5]
|
|
#define GPIO_INTERRUPT_FROM_OPTIONS(options) (gpio_int_type_t)((options & GPIO_INTERRUPT_BITMASK) >> 5)
|
|
#define GPIO_INTERRUPT_TO_OPTIONS(options, interrupt) (options | (interrupt << 5))
|
|
|
|
#define GPIO_PIN_NONE -1
|
|
|
|
typedef enum {
|
|
GPIO_INTERRUPT_DISABLE = 0,
|
|
GPIO_INTERRUPT_POS_EDGE = 1,
|
|
GPIO_INTERRUPT_NEG_EDGE = 2,
|
|
GPIO_INTERRUPT_ANY_EDGE = 3,
|
|
GPIO_INTERRUPT_LOW_LEVEL = 4,
|
|
GPIO_INTERRUPT_HIGH_LEVEL = 5,
|
|
GPIO__MAX,
|
|
} GpioInterruptType;
|
|
|
|
/** The index of a GPIO pin on a GPIO Controller */
|
|
typedef uint8_t gpio_pin_t;
|
|
|
|
/** Specifies the configuration flags for a GPIO pin (or set of pins) */
|
|
typedef uint16_t gpio_flags_t;
|
|
|
|
/** A configuration for a single GPIO pin */
|
|
struct GpioPinConfig {
|
|
/** GPIO device controlling the pin */
|
|
const struct Device* port;
|
|
/** The pin's number on the device */
|
|
gpio_pin_t pin;
|
|
/** The pin's configuration flags as specified in devicetree */
|
|
gpio_flags_t flags;
|
|
};
|
|
|
|
/**
|
|
* Check if the pin is ready to be used.
|
|
*
|
|
* @param pinConfig the specifications of the pin
|
|
* @return true if the pin is ready to be used
|
|
*/
|
|
static inline bool gpio_is_ready(const struct GpioPinConfig* pinConfig) {
|
|
return device_is_ready(pinConfig->port);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|