HAL for Espressif ESP32 Wifi

2017-10-08 17:38:10 +01:00
parent 091f742432
commit e2aeda61ed
23 changed files with 1257 additions and 16 deletions
--- a/Marlin/src/HAL/HAL_ESP32/HAL_timers_ESP32.h
+++ b/Marlin/src/HAL/HAL_ESP32/HAL_timers_ESP32.h
@@ -0,0 +1,114 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef _HAL_TIMERS_ESP32_H
+#define _HAL_TIMERS_ESP32_H
+
+// --------------------------------------------------------------------------
+// Includes
+// --------------------------------------------------------------------------
+
+#include <stdint.h>
+#include "driver/timer.h"
+
+// --------------------------------------------------------------------------
+// Defines
+// --------------------------------------------------------------------------
+//
+#define FORCE_INLINE __attribute__((always_inline)) inline
+
+typedef uint64_t hal_timer_t;
+#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFFFFFFFFFULL
+
+#define STEP_TIMER_NUM 0  // index of timer to use for stepper
+#define TEMP_TIMER_NUM 1  // index of timer to use for temperature
+#define PULSE_TIMER_NUM STEP_TIMER_NUM
+
+#define HAL_TIMER_RATE APB_CLK_FREQ // frequency of timer peripherals
+
+#define STEPPER_TIMER_PRESCALE     40
+#define STEPPER_TIMER_RATE         (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE) // frequency of stepper timer, 2MHz
+#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000)          // stepper timer ticks per µs
+
+#define STEP_TIMER_MIN_INTERVAL   8 // minimum time in µs between stepper interrupts
+
+#define TEMP_TIMER_PRESCALE    1000 // prescaler for setting Temp timer, 72Khz
+#define TEMP_TIMER_FREQUENCY   1000 // temperature interrupt frequency
+
+#define PULSE_TIMER_RATE         STEPPER_TIMER_RATE   // frequency of pulse timer
+#define PULSE_TIMER_PRESCALE     STEPPER_TIMER_PRESCALE
+#define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US
+
+#define ENABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_enable_interrupt(STEP_TIMER_NUM)
+#define DISABLE_STEPPER_DRIVER_INTERRUPT()  HAL_timer_disable_interrupt(STEP_TIMER_NUM)
+#define STEPPER_ISR_ENABLED() HAL_timer_interrupt_enabled(STEP_TIMER_NUM)
+
+#define ENABLE_TEMPERATURE_INTERRUPT()  HAL_timer_enable_interrupt(TEMP_TIMER_NUM)
+#define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt(TEMP_TIMER_NUM)
+
+#define HAL_TEMP_TIMER_ISR extern "C" void tempTC_Handler(void)
+#define HAL_STEP_TIMER_ISR extern "C" void stepTC_Handler(void)
+
+extern "C" void tempTC_Handler(void);
+extern "C" void stepTC_Handler(void);
+
+
+// --------------------------------------------------------------------------
+// Types
+// --------------------------------------------------------------------------
+
+typedef struct {
+  timer_group_t  group;
+  timer_idx_t    idx;
+  uint32_t       divider;
+  void           (*fn)(void);
+} tTimerConfig;
+
+// --------------------------------------------------------------------------
+// Public Variables
+// --------------------------------------------------------------------------
+
+extern const tTimerConfig TimerConfig[];
+
+// --------------------------------------------------------------------------
+// Public functions
+// --------------------------------------------------------------------------
+
+void HAL_timer_start (const uint8_t timer_num, uint32_t frequency);
+void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t count);
+hal_timer_t HAL_timer_get_compare(const uint8_t timer_num);
+hal_timer_t HAL_timer_get_count(const uint8_t timer_num);
+
+// if counter too high then bump up compare
+FORCE_INLINE static void HAL_timer_restrain(const uint8_t timer_num, const uint16_t interval_ticks) {
+  const hal_timer_t mincmp = HAL_timer_get_count(timer_num) + interval_ticks;
+  if (HAL_timer_get_compare(timer_num) < mincmp) HAL_timer_set_compare(timer_num, mincmp);
+}
+
+void HAL_timer_enable_interrupt(const uint8_t timer_num);
+void HAL_timer_disable_interrupt(const uint8_t timer_num);
+bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
+
+#define HAL_timer_isr_prologue(TIMER_NUM)
+#define HAL_timer_isr_epilogue(TIMER_NUM)
+
+#endif // _HAL_TIMERS_ESP32_H