68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/*
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* Copyright (c) 2024, Croxel Inc
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_DRIVERS_I2C_I2C_NRFX_TWI_COMMON_H_
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#define ZEPHYR_DRIVERS_I2C_I2C_NRFX_TWI_COMMON_H_
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#include <zephyr/pm/device.h>
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#include <nrfx_twi.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define I2C_NRFX_TWI_INVALID_FREQUENCY ((nrf_twi_frequency_t)-1)
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#define I2C_NRFX_TWI_FREQUENCY(bitrate) \
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(bitrate == I2C_BITRATE_STANDARD ? NRF_TWI_FREQ_100K \
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: bitrate == 250000 ? NRF_TWI_FREQ_250K \
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: bitrate == I2C_BITRATE_FAST ? NRF_TWI_FREQ_400K \
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: I2C_NRFX_TWI_INVALID_FREQUENCY)
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#define I2C(idx) DT_NODELABEL(i2c##idx)
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#define I2C_FREQUENCY(idx) \
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I2C_NRFX_TWI_FREQUENCY(DT_PROP(I2C(idx), clock_frequency))
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struct i2c_nrfx_twi_common_data {
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uint32_t dev_config;
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};
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struct i2c_nrfx_twi_config {
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nrfx_twi_t twi;
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nrfx_twi_config_t config;
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nrfx_twi_evt_handler_t event_handler;
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const struct pinctrl_dev_config *pcfg;
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};
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static inline nrfx_err_t i2c_nrfx_twi_get_evt_result(nrfx_twi_evt_t const *p_event)
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{
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switch (p_event->type) {
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case NRFX_TWI_EVT_DONE:
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return NRFX_SUCCESS;
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case NRFX_TWI_EVT_ADDRESS_NACK:
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return NRFX_ERROR_DRV_TWI_ERR_ANACK;
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case NRFX_TWI_EVT_DATA_NACK:
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return NRFX_ERROR_DRV_TWI_ERR_DNACK;
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default:
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return NRFX_ERROR_INTERNAL;
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}
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}
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int i2c_nrfx_twi_init(const struct device *dev);
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int i2c_nrfx_twi_configure(const struct device *dev, uint32_t dev_config);
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int i2c_nrfx_twi_recover_bus(const struct device *dev);
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int i2c_nrfx_twi_msg_transfer(const struct device *dev, uint8_t flags,
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uint8_t *buf, size_t buf_len,
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uint16_t i2c_addr, bool more_msgs);
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#ifdef CONFIG_PM_DEVICE
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int twi_nrfx_pm_action(const struct device *dev, enum pm_device_action action);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* ZEPHYR_DRIVERS_I2C_I2C_NRFX_TWI_COMMON_H_ */
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