HAL for Re:ARM (LPC1768) architecture

2017-06-17 22:19:42 +01:00
parent f3e562e46e
commit 44b0c186a6
122 changed files with 67493 additions and 28 deletions
--- a/Marlin/src/HAL/HAL_LPC1768/HAL_timers.cpp
+++ b/Marlin/src/HAL/HAL_LPC1768/HAL_timers.cpp
@ -0,0 +1,95 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * Description:
+ *
+ * For TARGET_LPC1768
+ */
+
+#ifdef TARGET_LPC1768
+
+#include "../HAL.h"
+#include "HAL_timers.h"
+
+void HAL_timer_init(void) {
+  LPC_SC->PCONP |= (0x1 << 0x1);  // power on timer0
+  LPC_TIM0->PR = ((HAL_TIMER_RATE / HAL_STEPPER_TIMER_RATE) - 1); // Use prescaler to set frequency if needed
+
+  LPC_SC->PCONP |= (0x1 << 0x2);  // power on timer1
+  LPC_TIM1->PR = ((HAL_TIMER_RATE / 1000000) - 1);
+}
+
+void HAL_timer_start(uint8_t timer_num, uint32_t frequency) {
+  switch(timer_num) {
+  case 0:
+    LPC_TIM0->MCR = 3;              // Match on MR0, reset on MR0
+    LPC_TIM0->MR0 = (uint32_t)(HAL_STEPPER_TIMER_RATE / frequency); // Match value (period) to set frequency
+    LPC_TIM0->TCR = (1 << 0);       // enable
+    break;
+  case 1:
+    LPC_TIM1->MCR = 3;
+    LPC_TIM1->MR0 = (uint32_t)(HAL_TEMP_TIMER_RATE / frequency);;
+    LPC_TIM1->TCR = (1 << 0);
+    break;
+  default:
+    return;
+  }
+}
+
+void HAL_timer_enable_interrupt (uint8_t timer_num) {
+  switch(timer_num) {
+  case 0:
+    NVIC_EnableIRQ(TIMER0_IRQn);     // Enable interrupt handler
+    NVIC_SetPriority(TIMER0_IRQn, NVIC_EncodePriority(0, 1, 0));
+    break;
+  case 1:
+    NVIC_EnableIRQ(TIMER1_IRQn);
+    NVIC_SetPriority(TIMER1_IRQn, NVIC_EncodePriority(0, 2, 0));
+    break;
+  }
+}
+
+void HAL_timer_disable_interrupt (uint8_t timer_num) {
+  switch(timer_num) {
+  case 0:
+    NVIC_DisableIRQ(TIMER0_IRQn);     // disable interrupt handler
+    break;
+  case 1:
+    NVIC_DisableIRQ(TIMER1_IRQn);
+    break;
+  }
+}
+
+void HAL_timer_isr_prologue (uint8_t timer_num) {
+  switch(timer_num) {
+  case 0:
+    LPC_TIM0->IR |= 1; //Clear the Interrupt
+    break;
+  case 1:
+    LPC_TIM1->IR |= 1;
+    break;
+  }
+}
+
+
+#endif // TARGET_LPC1768