3DPrinting/Prusa-Firmware
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Switch two divisions to faster multiplications

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This commit is contained in:
Yuri D'Elia 2022-05-26 20:02:41 +02:00
parent bc53bd5305
commit 929843e295
1 changed files with 5 additions and 2 deletions
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7
Firmware/temperature.cpp
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@ -2327,9 +2327,12 @@ static uint8_t TM_dT_smp = MAX(TM_dTs, MAX(3/TM_fS, 3/TM_fE));
static void check_temp_model() static void check_temp_model()
{ {
const float soft_pwm_inv = 1. / ((1 << 7) - 1);
const float soft_pwm_fan_inv = 1. / ((1 << FAN_SOFT_PWM_BITS) - 1);
// input values // input values
float heater_scale = (float)soft_pwm[0] / ((1 << 7) - 1); float heater_scale = soft_pwm_inv * soft_pwm[0];
float fan_scale = (float)soft_pwm_fan / ((1 << FAN_SOFT_PWM_BITS) - 1); float fan_scale = soft_pwm_fan_inv * soft_pwm_fan;
float cur_temp_heater = current_temperature_isr[0]; float cur_temp_heater = current_temperature_isr[0];
float cur_temp_ambient = current_temperature_ambient_isr + TM_aC; float cur_temp_ambient = current_temperature_ambient_isr + TM_aC;