def activate_ready(): """ swaps the high and low threshold registers so that the conversion ready pin will be activated on the ADC """ high = I2C.reverseByteOrder(0x8000) low = I2C.reverseByteOrder(0x7fff) D.dut.write16(D.highThreshReg, high) D.dut.write16(D.lowThreshReg,low)
def _load_calibration(self):
#load calibration
self._device.write16(
TMP007_CONFIG,
I2C.reverseByteOrder(TMP007_CFG_MODEON | TMP007_CFG_ALERTEN
| TMP007_CFG_TRANSC | self._mode))
#set alert status
self._device.write16(
TMP007_STATMASK,
I2C.reverseByteOrder(TMP007_STAT_ALERTEN | TMP007_STAT_CRTEN))
def dry_sensor(self):
"""
Cribbed from the Adafruit Arduino code. Guess it makes sure the
sensor is ready for reading after normalizing in a room.
"""
orig_config = self._device.readU16BE(HDC1000_CONFIG)
# reset, heat up, and select 14 bit temp & humidity
#
new_config = I2C.reverseByteOrder(HDC1000_CONFIG_RST |
HDC1000_CONFIG_HEAT |
HDC1000_CONFIG_MODE |
HDC1000_CONFIG_TRES_14 |
HDC1000_CONFIG_HRES_14)
self._device.write16(HDC1000_CONFIG, new_config)
time.sleep(0.015)
# Take 1000 readings and toss the results.
#
for i in range(1000):
self._read32(HDC1000_TEMP)
time.sleep(0.001)
# Write our original config back out to the device.
#
self._device.write16(HDC1000_CONFIG, orig_config)
time.sleep(0.015)
def write_config(): """ Write the desired options to the ADC configuration register. Get data from global options """ global D # bit shift everything into its right place in the message. Check datasheet. # Some options were not broken out for changing. The "magic bits" are # those options. Combine all the options through bit-wise OR newConfig = ( 1 << 15 | # OS - trigger conversion D.mux << 12 | # MUX D.pga << 9 | # PGA 1 << 8 | # MODE - singal shot D.dr << 5 | # DR 0 << 4 | # COMP_MODE 0 << 3 | # COMP_POL 0 << 2 | # COMP_LAT 0 << 1 ) # COMP_QUE # print "mux: ", bin(D.mux) # print "pga: ", bin(D.pga) # print "dr: ", bin(D.dr) # due to something with byte-writing order, we need to flip # the bytes before writing. I don't know the full details # print "config: %s"%bin(newConfig) # print "length: %d"%len(bin(newConfig)) rev = I2C.reverseByteOrder(newConfig) # print "Reversed byte order: ", bin(rev) # write it! D.dut.write16(D.configReg,rev)
def set_config(self):
"""Set the 16 bit Big Endian INA219 configuration register (0x00)
"""
reg_00 = self.reg_00
if self.host_endian_is_little:
reg_00 = I2C.reverseByteOrder(reg_00)
self.device.write16(0x00, reg_00)
def reset(self):
"""
reset, and select 14 bit temp & humidity
"""
self._device.write16(HDC1000_CONFIG,
I2C.reverseByteOrder(HDC1000_CONFIG_RST |
HDC1000_CONFIG_MODE |
HDC1000_CONFIG_TRES_14 |
HDC1000_CONFIG_HRES_14))
time.sleep(0.015)
def _load_calibration(self):
#load calibration
self._device.write16(TMP007_CONFIG, I2C.reverseByteOrder(TMP007_CFG_MODEON | TMP007_CFG_ALERTEN | TMP007_CFG_TRANSC | self._mode))
#set alert status
self._device.write16(TMP007_STATMASK, I2C.reverseByteOrder(TMP007_STAT_ALERTEN |TMP007_STAT_CRTEN))
import Adafruit_GPIO.I2C as i2c x = i2c.reverseByteOrder(1) print(i2c.reverseByteOrder) print(x)
