carsten/Elektronische_Last
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Lüftersteuerung ist abhängig von der Temperatur und muss nicht mehr manuell gesetzt werden

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This commit is contained in:
Carsten Keller 2024-06-09 17:58:12 +02:00
parent bbabeae752
commit 19b2a3f088
Signed by: carsten
GPG Key ID: DF06343A3A9B8868
2 changed files with 48 additions and 5 deletions
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49
Source/FanControl.cpp
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@ -11,6 +11,7 @@
#include "FanControl.hpp" #include "FanControl.hpp"
#define TIMER_RELOAD_VALUE 2559UL #define TIMER_RELOAD_VALUE 2559UL
#define DUTY_TO_TIM_VALUE(x) TIMER_RELOAD_VALUE * (x) / 100U
static std::uint32_t fan_speed; static std::uint32_t fan_speed;
static std::uint32_t duty; static std::uint32_t duty;
@ -23,10 +24,19 @@ extern "C" void TIM14_IRQHandler(void)
} }
extern "C" void FanControl_SetDuty(uint32_t d) extern "C" void FanControl_SetDuty(uint32_t d)
{ {
duty = TIMER_RELOAD_VALUE * d / 100UL ; duty = DUTY_TO_TIM_VALUE(d);
} }
namespace ElektronischeLast namespace ElektronischeLast
{ {
static const std::uint16_t stuetzpunkte [5][2] =
{
{ 25U, DUTY_TO_TIM_VALUE(0U) },
{ 40U, DUTY_TO_TIM_VALUE(30U) },
{ 50U, DUTY_TO_TIM_VALUE(50U) },
{ 65U, DUTY_TO_TIM_VALUE(75U) },
{ 80U, DUTY_TO_TIM_VALUE(100U) }
};
FanControl::FanControl(void) FanControl::FanControl(void)
{ {
/* TIM3 PWM-Output /* TIM3 PWM-Output
@ -105,7 +115,8 @@ namespace ElektronischeLast
LL_TIM_EnableCounter(TIM3); LL_TIM_EnableCounter(TIM3);
LL_TIM_EnableCounter(TIM14); LL_TIM_EnableCounter(TIM14);
this->compare_value = 0UL; this->last_compare = 0UL;
this->last_temp = 0UL;
NVIC_SetPriority(TIM14_IRQn, 0); NVIC_SetPriority(TIM14_IRQn, 0);
NVIC_EnableIRQ(TIM14_IRQn); NVIC_EnableIRQ(TIM14_IRQn);
@ -113,8 +124,38 @@ namespace ElektronischeLast
void FanControl::run(std::uint32_t temp) void FanControl::run(std::uint32_t temp)
{ {
this->compare_value = duty; if(duty != 0U)
LL_TIM_OC_SetCompareCH1(TIM3, this->compare_value); {
LL_TIM_OC_SetCompareCH1(TIM3, duty);
}
else
{
if(this->last_temp != temp)
{
std::uint16_t cv = this->get_compare_value(temp);
if(this->last_compare != cv)
{
cv = (this->last_compare + cv) / 2U;
LL_TIM_OC_SetCompareCH1(TIM3, cv);
this->last_compare = cv;
}
this->last_temp = temp;
}
}
}
std::uint16_t FanControl::get_compare_value(std::uint16_t temp)
{
std::uint16_t cv = TIMER_RELOAD_VALUE;
for(std::uint32_t i = 0UL; i < sizeof(stuetzpunkte) / sizeof(stuetzpunkte[0]); i++)
{
if(temp < stuetzpunkte[i][0])
{
cv = stuetzpunkte[i][1];
break;
}
}
return cv;
} }
/** /**

4
Source/FanControl.hpp
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@ -22,7 +22,9 @@ namespace ElektronischeLast
void run(std::uint32_t temp); void run(std::uint32_t temp);
std::uint32_t get_speed(void); std::uint32_t get_speed(void);
private: private:
std::uint32_t compare_value; std::uint32_t last_compare;
std::uint32_t last_temp;
std::uint16_t get_compare_value(std::uint16_t temp);
}; };
} }