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2026-06-17 13:07:58 +03:00
parent 8d5af0b70c
commit 26f3263a05
33 changed files with 935 additions and 508 deletions
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test_code/drivers/multiplexer/cd74hc4067/cd74hc4067.h
+25 -44
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@@ -3,58 +3,39 @@
#include <stdint.h>
#include <zephyr/kernel.h>
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Select one of the 16 multiplexed channels.
*
* @param dev CD74HC4067 device instance.
* @param channel Channel number to route (0-15).
*
* @retval 0 If the channel was selected.
* @retval -EINVAL If the channel number is out of range.
* @retval -ENODEV If one of the selection GPIOs is not ready.
* @retval other Negative errno value from the GPIO driver.
*/
// struct cd74hc4067_api {
// int (*enable)(const struct device *dev);
// int (*disable)(const struct device *dev);
// int (*select_channel)(const struct device *dev, uint8_t channel);
// };
struct cd74hc4067_data {
struct k_mutex lock;
uint8_t current_channel;
bool enabled;
};
#define CD74HC4067_SELECT_CHANNEL_COUNT 16U
#define CD74HC4067_SELECT_PIN_COUNT 4U
struct cd74hc4067_cfg {
struct gpio_dt_spec select[CD74HC4067_SELECT_PIN_COUNT];
struct gpio_dt_spec enable;
bool has_enable;
};
int cd74hc4067_enable(const struct device *dev);
int cd74hc4067_disable(const struct device *dev);
int cd74hc4067_select_channel(const struct device *dev, uint8_t channel);
/**
* @brief Enable the multiplexer output (drives the /EN pin low).
*
* If the instance does not provide an enable GPIO, this call is a no-op.
*
* @param dev CD74HC4067 device instance.
*
* @retval 0 On success.
* @retval -ENODEV If the enable GPIO is not ready.
* @retval negative errno on GPIO failures.
*/
int cd74hc4067_enable(const struct device *dev);
/**
* @brief Disable the multiplexer output (drives the /EN pin high).
*
* @param dev CD74HC4067 device instance.
*
* @retval 0 On success.
* @retval -ENOTSUP If the instance does not expose an enable GPIO.
* @retval -ENODEV If the enable GPIO is not ready.
* @retval negative errno on GPIO failures.
*/
int cd74hc4067_disable(const struct device *dev);
/**
* @brief Return the last channel value written to the device.
*
* @param dev CD74HC4067 device instance.
*
* @return Channel number in the range [0, 15].
*/
uint8_t cd74hc4067_get_current_channel(const struct device *dev);
#ifdef __cplusplus
}