1 files changed, 39 insertions, 0 deletions
diff --git a/Marlin/src/HAL/LPC1768/fast_pwm.cpp b/Marlin/src/HAL/LPC1768/fast_pwm.cpp
new file mode 100644
index 0000000..dd440b5
--- /dev/null
+++ b/Marlin/src/HAL/LPC1768/fast_pwm.cpp
@@ -0,0 +1,39 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#ifdef TARGET_LPC1768
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if NEEDS_HARDWARE_PWM // Specific meta-flag for features that mandate PWM
+
+#include <pwm.h>
+
+void set_pwm_frequency(const pin_t pin, int f_desired) {
+  LPC176x::pwm_set_frequency(pin, f_desired);
+}
+
+void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size/*=255*/, const bool invert/*=false*/) {
+  LPC176x::pwm_write_ratio(pin, invert ? 1.0f - (float)v / v_size : (float)v / v_size);
+}
+
+#endif // NEEDS_HARDWARE_PWM
+#endif // TARGET_LPC1768