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78 lines
1.5 KiB
Plaintext
78 lines
1.5 KiB
Plaintext
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http://forum.arduino.cc/index.php?topic=272402.msg1923962#new
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TODO's
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- none
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DHT11 blauwe testen ....
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DONE
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======================
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- there are many delay()'s still in the library and these should be removed if possible or at least minimized.
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- the PRE1.0 Arduino support needs still to be implemented. Or removed completely.
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- test test test test test and ....
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Remark Erni
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============
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int64_t offset = (unsigned long)C[2] * 65536L + (C[4] * dT ) / 128L;
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OPtimiize
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============
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uint16_t C[8] = { 80, 53513, 56427, 32594, 31335, 31612, 27894, 45785};
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uint32_t D1 = 7909856L;
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uint32_t D2 = 8246240L;
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int32_t dT = D2 - C[5] * 256L;
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int32_t temp = 2000 + (dT * C[6])/8388608L;
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int64_t offset = C[2] * 65536L+ (C[4] * dT ) / 128L;
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int64_t sens = C[1] * 32768L + (C[3] * dT ) / 256L;
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int32_t P = ((D1 * sens)/2097152L - offset) / 32768L;
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Port open
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MS5611 test version: 0.0.00
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reset: 0
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0 50 80
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0 D109 53513
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0 DC6B 56427
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0 7F52 32594
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0 7A67 31335
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0 7B7C 31612
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0 6CF6 27894
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0 B2D9 45785
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convD1: 0
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7909856
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convD2: 0
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8246240
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float is 40% faster 168 versus 296 == 130 uSec.
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test sketch size, RAM
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int64 => 7220, 476
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float => 6522, 476
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==> scheelt 700 bytes.
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dT = D2 - C[5] * 256L;
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int16_t T2 = 2000 + (dT * C[6]) /8388608L;
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float offset2 = C[2] * 65536.0 + (C[4] * dT ) / 128.0;
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float sens2 = C[1] * 32768.0 + (C[3] * dT ) / 256.0;
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uint32_t P2 = ((D1 * sens2)/2097152.0 - offset2) / 32768.0;
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Start
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296
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153568
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1999
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89177
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168
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153568
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1999
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89177
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