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pamoja_ds18b20_thermometer_new

pamoja_ffi::sensors_driver

Function pamoja_ds18b20_thermometer_new 

Source 
#[unsafe(no_mangle)]
pub unsafe extern "C" fn pamoja_ds18b20_thermometer_new(
    serial: *const c_char,
    out_thermometer: *mut *mut PamojaDs18b20Thermometer,
) -> PamojaStatus
Expand description

Names a DS18B20 the kernel serves by the serial in its directory name, reading /sys/bus/w1/devices/28-<serial>/w1_slave.

§Arguments

  • serial - the twelve hex digits after 28-.
  • out_thermometer - receives the thermometer.

§Returns

PamojaStatus::Ok, or PamojaStatus::InvalidArgument for a null or non-UTF-8 argument. Nothing is read until pamoja_ds18b20_thermometer_read.

§Safety

serial must be a null-terminated string or null, and out_thermometer a writable pointer or null.