madcow/drybox-core
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Merge branch 'main' into atmega1284p

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Madcow
2024-10-01 16:01:12 +02:00
committed by GitHub
parent 5a726f5d48 f85ff6bf3e
commit 53114250a2
2 changed files with 5 additions and 2 deletions
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5
src/bus/pwm.c
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@@ -80,6 +80,8 @@ int PWM_Init(void)
TCCR1A = BIT(WGM11) | BIT(COM1A1) | BIT(COM1B1);
TCCR1B = BIT(WGM12) | BIT(WGM13) | BIT(CS10);
ICR1 = PWM_CYCLE_TOP; // 8000 MHz / 25000 KHz
// TIMER3: Fast mode, non-inverting, top=ICR3, prescale /1
TCCR3A = BIT(WGM31) | BIT(COM3A1) | BIT(COM3B1);
TCCR3B = BIT(WGM32) | BIT(WGM33) | BIT(CS30);
@@ -100,7 +102,8 @@ void PWM_SetValue(int port, int value)
if (port != FAN01 && port != FAN02 && port != FAN03)
return; // Invalid port
n = CLAMP(value, 100, 0) * (PWM_CYCLE_TOP / 100.0f);
// Workaround: Missing third 16-bit timer output
n = CLAMP(value, 100, 0) * PWM_CYCLE_TOP / 100.0f;
Info("Setting duty cycle for %s to %d/%d...",
(port == FAN01) ? "FAN01" :

2
src/bus/pwm.h
View File

@@ -11,7 +11,7 @@
#define PWM_CYCLE_TOP (F_CPU / 25000 - 1) // 8 MHz / 25 KHz
#define FAN01_MIN_DUTY (PWM_CYCLE_TOP * 0.2f)
#define FAN02_MIN_DUTY (PWM_CYCLE_TOP * 0.2f)
#define FAN03_MIN_DUTY (PWM_CYCLE_TOP * 0.2f)
#define FAN03_MIN_DUTY (0xFF * 0.2f)
int PWM_Init(void);
void PWM_SetValue(int port, int value);