44 lines
993 B
C
44 lines
993 B
C
/*
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* Copyright (c) 2020 Sven Herrmann
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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_SENSOR_MPR_H_
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#define ZEPHYR_DRIVERS_SENSOR_MPR_H_
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/* MPR output measurement command */
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#define MPR_OUTPUT_MEASUREMENT_COMMAND (0xAA)
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/* MPR status byte masks */
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#define MPR_STATUS_MASK_MATH_SATURATION (0x01)
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#define MPR_STATUS_MASK_INTEGRITY_TEST_FAILED (0x04)
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#define MPR_STATUS_MASK_BUSY (0x20)
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#define MPR_STATUS_MASK_POWER_ON (0x40)
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/* MPR register read maximum retries */
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#ifndef MPR_REG_READ_MAX_RETRIES
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#define MPR_REG_READ_MAX_RETRIES (3)
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#endif
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/* MPR register read data conversion delay [ms] */
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#ifndef MPR_REG_READ_DATA_CONV_DELAY_MS
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#define MPR_REG_READ_DATA_CONV_DELAY_MS (5)
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#endif
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struct mpr_data {
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struct device *i2c_master;
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uint32_t reg_val;
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};
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struct mpr_config {
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const char *i2c_bus;
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uint16_t i2c_addr;
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};
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int mpr_reg_read(struct device *dev, uint8_t reg, uint16_t *val);
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#endif /* ZEPHYR_DRIVERS_SENSOR_MPR_H_ */
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