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@@ -0,0 +1,166 @@
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+/*
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+ * Copyright (c) 2006-2023, RT-Thread Development Team
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+ *
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+ * SPDX-License-Identifier: Apache-2.0
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+ *
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+ * Change Logs:
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+ * Date Author Notes
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+ * 2023-11-15 BetMul first version
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+ */
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+
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+#include "drv_hwtimer.h"
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+
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+#include <rtthread.h>
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+#include <rtdevice.h>
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+#include "driver/gptimer.h"
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+#include "sdkconfig.h"
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+
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+#ifdef RT_USING_HWTIMER
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+
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+/**
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+ * handle interrupt for hwtimer.
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+ */
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+static bool mcu_hwtimer_intr_handler(gptimer_handle_t gptimer, const gptimer_alarm_event_data_t *edata, void *user_ctx)
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+{
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+ rt_interrupt_enter();
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+
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+ rt_hwtimer_t *hwtimer = (rt_hwtimer_t *)user_ctx;
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+ rt_device_hwtimer_isr(hwtimer);
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+
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+ rt_interrupt_leave();
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+
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+ return 0;
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+}
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+
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+/**
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+ * init the hwtimer
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+*/
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+static void mcu_hwtimer_init(rt_hwtimer_t *timer, rt_uint32_t state)
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+{
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+ gptimer_handle_t gptimer = (gptimer_handle_t)timer->parent.user_data;
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+
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+ // let the gptimer into enable status
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+ ESP_ERROR_CHECK(gptimer_enable(gptimer));
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+}
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+
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+/**
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+ * start the hwtimer, change status into running
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+*/
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+static rt_err_t mcu_hwtimer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t mode)
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+{
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+ gptimer_handle_t gptimer = (gptimer_handle_t)timer->parent.user_data;
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+ gptimer_alarm_config_t alarm_config = {
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+ .alarm_count = cnt,
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+ };
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+ if (mode == HWTIMER_MODE_ONESHOT)
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+ {
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+
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+ }
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+ else
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+ {
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+ alarm_config.reload_count = 0;
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+ alarm_config.flags.auto_reload_on_alarm = true;
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+ }
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+ ESP_ERROR_CHECK(gptimer_set_alarm_action(gptimer, &alarm_config));
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+ ESP_ERROR_CHECK(gptimer_start(gptimer));
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+
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+ return RT_EOK;
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+}
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+
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+/**
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+ * stop the hwtimer, change the status from running into enable
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+*/
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+static void mcu_hwtimer_stop(rt_hwtimer_t *timer)
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+{
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+ gptimer_handle_t gptimer = (gptimer_handle_t)timer->parent.user_data;
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+
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+ ESP_ERROR_CHECK(gptimer_stop(gptimer));
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+}
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+
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+/**
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+ * get count
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+*/
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+static rt_uint32_t mcu_hwtimer_count_get(rt_hwtimer_t *timer)
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+{
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+ gptimer_handle_t gptimer = (gptimer_handle_t)timer->parent.user_data;
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+ // get count number
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+ uint64_t value;
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+ ESP_ERROR_CHECK(gptimer_get_raw_count(gptimer, &value));
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+ return (rt_uint32_t)value;
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+}
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+
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+/**
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+ * control the hwtimer
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+*/
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+static rt_err_t mcu_hwtimer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *args)
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+{
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+
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+ rt_err_t err = RT_EOK;
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+
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+ switch (cmd)
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+ {
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+ case HWTIMER_CTRL_FREQ_SET:
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+ err = -RT_ERROR;
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+ break;
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+
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+ case HWTIMER_CTRL_INFO_GET:
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+ err = -RT_ERROR;
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+ break;
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+
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+ case HWTIMER_CTRL_MODE_SET:
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+ timer->mode = *(rt_uint32_t *)args;
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+ break;
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+
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+ case HWTIMER_CTRL_STOP:
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+ mcu_hwtimer_stop(timer);
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+ break;
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+ }
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+
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+ return err;
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+}
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+
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+static struct rt_hwtimer_device _hwtimer;
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+static const struct rt_hwtimer_ops _hwtimer_ops =
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+ {
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+ .init = mcu_hwtimer_init,
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+ .start = mcu_hwtimer_start,
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+ .stop = mcu_hwtimer_stop,
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+ .count_get = mcu_hwtimer_count_get,
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+ .control = mcu_hwtimer_control};
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+
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+static const struct rt_hwtimer_info _hwtimer_info =
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+ {
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+ // TODO:what is the true max and min?
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+ .maxfreq = 1000000UL,
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+ .minfreq = 1000000UL,
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+ .maxcnt = 0xFFFF,
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+ .cntmode = HWTIMER_MODE_ONESHOT};
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+
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+int rt_hw_hwtimer_init(void)
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+{
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+
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+ char *name = "timer0";
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+
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+ gptimer_handle_t gptimer = NULL;
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+ gptimer_config_t timer_config = {
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+ .clk_src = GPTIMER_CLK_SRC_DEFAULT,
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+ .direction = GPTIMER_COUNT_UP,
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+ .resolution_hz = 1 * 1000 * 1000,
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+ };
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+
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+ gptimer_event_callbacks_t cbs = {
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+ .on_alarm = mcu_hwtimer_intr_handler,
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+ };
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+
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+ ESP_ERROR_CHECK(gptimer_new_timer(&timer_config, &gptimer));
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+ ESP_ERROR_CHECK(gptimer_register_event_callbacks(gptimer, &cbs, &_hwtimer));
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+
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+ _hwtimer.info = &_hwtimer_info;
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+ _hwtimer.ops = &_hwtimer_ops;
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+
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+ return rt_device_hwtimer_register(&_hwtimer, name, (void *)gptimer);
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+
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+}
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+
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+INIT_DEVICE_EXPORT(rt_hw_hwtimer_init);
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+#endif /* RT_USING_HWTIMER */
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BetMul