JC42 compliant temperature sensor driver¶
JC42 compliant temperature sensor driver.
Description¶
The connection between the MCU and jc42 compliant temperature sensors is based on a I2C-interface. There are multiple jc42 compliant temperature sensors available such as the mcp9804 and the MAX6604. This driver reads the temperature from these sensors. The sensors support a alarm wire, but this is not supported by this driver.
This driver provides [S]ensor [A]ctuator [U]ber [L]ayer capabilities.
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JC42_OK
¶ 1
(0)
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JC42_NOI2C
¶ 1
(-1)
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JC42_NODEV
¶ 1
(-2)
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const saul_driver_t
jc42_temperature_saul_driver
¶ Export SAUL endpoint.
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int
jc42_init
(jc42_t * dev, const jc42_params_t * params)¶ Initialize a jc42 device.
Parameters
dev: device descriptor params: jc42 initialization struct Return values
- 0 on success
- -1 on error
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int
jc42_get_config
(const jc42_t * dev, uint16_t * data)¶ Get content of configuration register.
Parameters
dev: device descriptor data: buffer where config register will be written to Return values
- 0 on success
- -1 on error
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int
jc42_set_config
(const jc42_t * dev, uint16_t data)¶ Set content of configuration register.
Parameters
dev: device descriptor data: new value for configuration register Return values
- 0 on success
- -1 on error
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int
jc42_get_temperature
(const jc42_t * dev, int16_t * temperature)¶ Get measured temperature.
Parameters
dev: device descriptor temperature: uint16_t buffer where temperature will be written to in centi-degree Return values
- 0 on success
- -1 on error
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struct
jc42_t
¶ Device descriptor for a jc42 device.
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i2c.h::i2c_t
i2c
¶ I2C device that sensor is connected to.
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uint8_t
addr
¶ I2C address of this particular sensor.
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struct
jc42_params_t
¶ Device initialization parameters.
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i2c.h::i2c_t
i2c
¶ I2C device that sensor is connected to.
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cc2538/include/periph_cpu.h::i2c_speed_t
speed
¶ I2C device speed.
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uint8_t
addr
¶ Configured address of the sensor.
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