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IQ.Pilot Release Commit @ 0798119

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IQ.Lvbs history cleanup
2026-08-22 23:42:42 -05:00
commit b42569dbca
4529 changed files with 1132125 additions and 0 deletions
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48
panda/board/drivers/fan.h Normal file
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#include "fan_declarations.h"
struct fan_state_t fan_state;
static const uint8_t FAN_TICK_FREQ = 8U;
void fan_set_power(uint8_t percentage) {
if (percentage > 0U) {
fan_state.power = CLAMP(percentage, 20U, 100U);
} else {
fan_state.power = 0U;
}
}
void fan_init(void) {
fan_state.cooldown_counter = current_board->fan_enable_cooldown_time * FAN_TICK_FREQ;
llfan_init();
}
// Call this at FAN_TICK_FREQ
void fan_tick(void) {
if (current_board->has_fan) {
// Measure fan RPM
uint16_t fan_rpm_fast = fan_state.tach_counter * (60U * FAN_TICK_FREQ / 4U); // 4 interrupts per rotation
fan_state.tach_counter = 0U;
fan_state.rpm = (fan_rpm_fast + (3U * fan_state.rpm)) / 4U;
#ifdef DEBUG_FAN
puth(fan_state.target_rpm);
print(" "); puth(fan_rpm_fast);
print(" "); puth(fan_state.power);
print("\n");
#endif
// Cooldown counter to prevent noise on tachometer line.
if (fan_state.power > 0U) {
fan_state.cooldown_counter = current_board->fan_enable_cooldown_time * FAN_TICK_FREQ;
} else {
if (fan_state.cooldown_counter > 0U) {
fan_state.cooldown_counter--;
}
}
// Set PWM and enable line
pwm_set(TIM3, 3, fan_state.power);
current_board->set_fan_enabled((fan_state.power > 0U) || (fan_state.cooldown_counter > 0U));
}
}