From e8701195e66f2d27ffe17fb514eae8173795aaf7 Mon Sep 17 00:00:00 2001
From: Georgiy Bondarenko <69736697+nehilo@users.noreply.github.com>
Date: Thu, 4 Mar 2021 22:54:23 +0500
Subject: Initial commit

---
 Marlin/src/HAL/LPC1768/timers.cpp | 65 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Marlin/src/HAL/LPC1768/timers.cpp

(limited to 'Marlin/src/HAL/LPC1768/timers.cpp')

diff --git a/Marlin/src/HAL/LPC1768/timers.cpp b/Marlin/src/HAL/LPC1768/timers.cpp
new file mode 100644
index 0000000..a7a4058
--- /dev/null
+++ b/Marlin/src/HAL/LPC1768/timers.cpp
@@ -0,0 +1,65 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ *
+ * 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/>.
+ *
+ */
+
+/**
+ * Description:
+ *
+ * Timers for LPC1768
+ */
+
+#ifdef TARGET_LPC1768
+
+#include "../../inc/MarlinConfig.h"
+
+void HAL_timer_init() {
+  SBI(LPC_SC->PCONP, SBIT_TIMER0);  // Power ON Timer 0
+  LPC_TIM0->PR = (HAL_TIMER_RATE) / (STEPPER_TIMER_RATE) - 1; // Use prescaler to set frequency if needed
+
+  SBI(LPC_SC->PCONP, SBIT_TIMER1);  // Power ON Timer 1
+  LPC_TIM1->PR = (HAL_TIMER_RATE) / 1000000 - 1;
+}
+
+void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
+  switch (timer_num) {
+    case 0:
+      LPC_TIM0->MCR = _BV(SBIT_MR0I) | _BV(SBIT_MR0R); // Match on MR0, reset on MR0, interrupts when NVIC enables them
+      LPC_TIM0->MR0 = uint32_t(STEPPER_TIMER_RATE) / frequency; // Match value (period) to set frequency
+      LPC_TIM0->TCR = _BV(SBIT_CNTEN); // Counter Enable
+
+      NVIC_SetPriority(TIMER0_IRQn, NVIC_EncodePriority(0, 1, 0));
+      NVIC_EnableIRQ(TIMER0_IRQn);
+      break;
+
+    case 1:
+      LPC_TIM1->MCR = _BV(SBIT_MR0I) | _BV(SBIT_MR0R); // Match on MR0, reset on MR0, interrupts when NVIC enables them
+      LPC_TIM1->MR0 = uint32_t(TEMP_TIMER_RATE) / frequency;
+      LPC_TIM1->TCR = _BV(SBIT_CNTEN); // Counter Enable
+
+      NVIC_SetPriority(TIMER1_IRQn, NVIC_EncodePriority(0, 2, 0));
+      NVIC_EnableIRQ(TIMER1_IRQn);
+      break;
+
+    default: break;
+  }
+}
+
+#endif // TARGET_LPC1768
-- 
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