3DPrinting/MarlinFirmware
0
0
Fork 0
mirror of https://github.com/MarlinFirmware/Marlin.git synced 2025-01-22 17:52:57 +00:00
Code Issues Releases Wiki Activity

⚡️ Optimize LPC176x set_pwm_duty (#27178)

Browse source
This commit is contained in:
Mihai 2024-06-16 01:55:45 +03:00 committed by GitHub
parent a1dc2856de
commit d7b6acc03d
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 4 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
Marlin/src/HAL/LPC1768/fast_pwm.cpp
View file

@ -26,8 +26,10 @@
void MarlinHAL::set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size/*=255*/, const bool invert/*=false*/) {
if (!LPC176x::pin_is_valid(pin)) return;
if (LPC176x::pwm_attach_pin(pin))
LPC176x::pwm_write_ratio(pin, invert ? 1.0f - (float)v / v_size : (float)v / v_size); // map 1-254 onto PWM range
if (LPC176x::pwm_attach_pin(pin)) {
const uint32_t duty = map(invert ? v_size - v : v, 0, v_size, 0, LPC176x::pwm_get_period(pin));
LPC176x::pwm_write(pin, duty);
}
}
void MarlinHAL::set_pwm_frequency(const pin_t pin, const uint16_t f_desired) {