root/525.743/code/test scripts/tmp512.py @ 018481aa
| e45aa19e | dsorber | import sys
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import time
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import smbus
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class TMP512(object):
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def __init__(self, address):
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self.bus = smbus.SMBus(1)
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self.address = address
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| 018481aa | dsorber | # Shunt Measurement Configuration
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# - turn off shunt/bus voltage measurement
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self.write_reg(0x00, 0x3998)
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# Temperature Measurement Configuration
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# - continous conversion at 1 conversion/second
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# - enable remote 1, remote 2 and local
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self.write_reg(0x01, 0xBE00)
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| e45aa19e | dsorber | def _reverse16(self, value):
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""" A quick hack method for reversing byte order for a 16 bit value """
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str_val = '%04X' % value
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new_val = str_val[2:4] + str_val[0:2]
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return int(new_val, 16)
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def read_reg(self, reg):
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raw = self.bus.read_word_data(self.address, reg)
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return self._reverse16(raw)
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| 018481aa | dsorber | def write_reg(self, reg, data):
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raw = self._reverse16(data)
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self.bus.write_word_data(self.address, reg, raw)
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def reset(self):
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self.write_reg(0x00, 0xB998)
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time.sleep(1)
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def status(self):
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return self.read_reg(0x02)
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| e45aa19e | dsorber | def device_id(self):
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return '0x%04X' % self.read_reg(0x1F)
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| 74eab0f1 | dsorber | def _convert_temp(self, raw_val):
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| 018481aa | dsorber | # Raw temp is a 13 bit number, the units are 0.0625 C
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| 74eab0f1 | dsorber | temp = (raw_val >> 3) * 0.0625
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# Convert C to F
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return (temp * 1.8) + 32
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| e45aa19e | dsorber | def local_temp(self):
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| 74eab0f1 | dsorber | return self._convert_temp(self.read_reg(0x08))
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def temp_sensor1(self):
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return self._convert_temp(self.read_reg(0x09))
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def temp_sensor2(self):
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return self._convert_temp(self.read_reg(0x0A))
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| e45aa19e | dsorber | |||
def main():
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| 018481aa | dsorber | import time
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temp1 = TMP512(0x5d)
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# temp1 = TMP512(0x5d)
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# temp1.write_reg(0x00, 0x8000)
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# time.sleep(1)
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# temp1.reset()
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print 'Status: 0x%04X' % temp1.status()
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| e45aa19e | dsorber | print temp1.device_id()
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| 74eab0f1 | dsorber | print 'The local temp1 is %d' % temp1.local_temp()
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| 018481aa | dsorber | |||
print 'Remote 1 temp limit: 0x%04X' % temp1.read_reg(0x12)
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print 'Remote 1 nfactor: 0x%04X' % temp1.read_reg(0x16)
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print 'The remote1 temp1 is 0x%04X' % temp1.temp_sensor1()
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print 'The remote2 temp1 is %d' % temp1.temp_sensor2()
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time.sleep(1)
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print 'The remote1 temp1 is %d' % temp1.temp_sensor1()
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print 'The remote2 temp1 is %d' % temp1.temp_sensor2()
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time.sleep(1)
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| 74eab0f1 | dsorber | print 'The remote1 temp1 is %d' % temp1.temp_sensor1()
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print 'The remote2 temp1 is %d' % temp1.temp_sensor2()
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| e45aa19e | dsorber | |||
# bus = smbus.SMBus(1)
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# address = 0x5c
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# # 2 digits at 9ma sink
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# # bus.write_byte_data(self.address, 0x00, 0x35)
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# print '0x%02X' % bus.read_word_data(address, 0x00)
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# print '0x%02X' % bus.read_word_data(address, 0x1F)
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if __name__ == '__main__':
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sys.exit(main())
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