Reorganize HAL (#14832)

Marlin/src/HAL/HAL_LINUX/timers.cpp

@@ -0,0 +1,73 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (c) 2019 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/>.
+ *
+ */
+
+#ifdef __PLAT_LINUX__
+
+#include "hardware/Timer.h"
+
+#include "../../inc/MarlinConfig.h"
+#include "timers.h"
+
+/**
+ * Use POSIX signals to attempt to emulate Interrupts
+ * This has many limitations and is not fit for the purpose
+ */
+
+HAL_STEP_TIMER_ISR();
+HAL_TEMP_TIMER_ISR();
+
+Timer timers[2];
+
+void HAL_timer_init(void) {
+  timers[0].init(0, STEPPER_TIMER_RATE, TIMER0_IRQHandler);
+  timers[1].init(1, TEMP_TIMER_RATE, TIMER1_IRQHandler);
+}
+
+void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
+  timers[timer_num].start(frequency);
+}
+
+void HAL_timer_enable_interrupt(const uint8_t timer_num) {
+  timers[timer_num].enable();
+}
+
+void HAL_timer_disable_interrupt(const uint8_t timer_num) {
+  timers[timer_num].disable();
+}
+
+bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
+  return timers[timer_num].enabled();
+}
+
+void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t compare) {
+  timers[timer_num].setCompare(compare);
+}
+
+hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) {
+  return timers[timer_num].getCompare();
+}
+
+hal_timer_t HAL_timer_get_count(const uint8_t timer_num) {
+  return timers[timer_num].getCount();
+}
+
+#endif // __PLAT_LINUX__