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Temperatur wird passend für MCP9701 berechnet

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This commit is contained in:
Carsten Keller 2024-06-09 17:58:11 +02:00
parent ed738a8a8c
commit bbabeae752
Signed by: carsten
GPG Key ID: DF06343A3A9B8868
1 changed files with 6 additions and 7 deletions
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13
Source/ADC.cpp
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@ -225,10 +225,14 @@ namespace ElektronischeLast
const float factor = 3.3f / 4096.0f * 1000.0f * 4.0f / 1.08f; const float factor = 3.3f / 4096.0f * 1000.0f * 4.0f / 1.08f;
return factor * current; return factor * current;
} }
/**
* MCP9701
* Vout = TC * TA + V0°C => Tc = (Vout - V0°C) / Tc
* Tc=19,5mV/°C, V0°C=0,4V
*/
std::uint32_t iADC::get_temperature(void) std::uint32_t iADC::get_temperature(void)
{ {
return temperature; return ((temperature * 3.3f / 4096.0f) - 0.4f) / 0.019f;
} }
/** /**
* @brief Gemessene Spannung der zu belastenden Quelle. * @brief Gemessene Spannung der zu belastenden Quelle.
@ -242,9 +246,4 @@ namespace ElektronischeLast
const float factor = /*(100000.0f + 4700.0f) / 4700.0f*/22.484848484848f * 3.3f / 4096.0f * 1000.0f; const float factor = /*(100000.0f + 4700.0f) / 4700.0f*/22.484848484848f * 3.3f / 4096.0f * 1000.0f;
return factor * voltage; return factor * voltage;
} }
/**
* MCP9701
* Vout = TC * TA + V0°C => Tc = (Vout - V0°C) / Tc
* Tc=19,5mV/°C, V0°C=0,4V
*/
} }