[bsp][pico] add hwtimer driver

Z8MAN8 · Oct 30, 2023 · eb766c1 · eb766c1
1 parent 1554888
commit eb766c1
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diff --git a/bsp/raspberry-pico/Kconfig b/bsp/raspberry-pico/Kconfig
@@ -397,6 +397,28 @@ menu "On-chip Peripheral Drivers"
                 endif
         endif
 
+    menuconfig BSP_USING_HWTIMER
+        bool "Enable HWTIMER"
+        default n
+        select RT_USING_HWTIMER
+        if BSP_USING_HWTIMER
+            config BSP_USING_TIMER0
+                bool "Enable HWTIMER0"
+                default n
+
+            config BSP_USING_TIMER1
+                bool "Enable HWTIMER1"
+                default n
+
+            config BSP_USING_TIMER2
+                bool "Enable HWTIMER2"
+                default n
+
+            config BSP_USING_TIMER3
+                bool "Enable HWTIMER3"
+                default n
+        endif
+
     menuconfig BSP_USING_I2C
         bool "Enable I2C"
         select RT_USING_I2C

diff --git a/bsp/raspberry-pico/drivers/SConscript b/bsp/raspberry-pico/drivers/SConscript
@@ -34,6 +34,9 @@ if GetDepend('BSP_USING_ON_CHIP_FLASH'):
 if GetDepend('BSP_USING_PWM'):
     src += ['drv_pwm.c']
 
+if GetDepend('BSP_USING_HWTIMER'):
+    src += ['drv_hwtimer.c']
+
 group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
 
 Return('group')
diff --git a/bsp/raspberry-pico/drivers/drv_hwtimer.c b/bsp/raspberry-pico/drivers/drv_hwtimer.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date             Author           Notes
+ * 2023-10-30       ChuShicheng      first version
+ */
+
+#include "drv_hwtimer.h"
+#include "board.h"
+
+#ifdef BSP_USING_HWTIMER
+
+#define DBG_LEVEL   DBG_LOG
+#include <rtdbg.h>
+#define LOG_TAG "DRV.HWTIMER"
+
+typedef struct _timer
+{
+    char *name;
+    struct repeating_timer repeat_timer;
+    alarm_id_t alarm_id;
+    rt_hwtimer_t timer;
+}_timer_t;
+
+static void _hwtimer_init(rt_hwtimer_t *timer, rt_uint32_t state);
+static rt_err_t _hwtimer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t mode);
+static void _hwtimer_stop(rt_hwtimer_t *timer);
+static rt_uint32_t _hwtimer_count_get(rt_hwtimer_t *timer);
+static rt_err_t _hwtimer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *args);
+static int64_t _hwtmr_isr(alarm_id_t id, void *user_data);
+
+static const struct rt_hwtimer_ops _hwtimer_ops = {
+    .init = _hwtimer_init,
+    .start = _hwtimer_start,
+    .stop = _hwtimer_stop,
+    .count_get = _hwtimer_count_get,
+    .control = _hwtimer_control
+};
+
+static const struct rt_hwtimer_info _hwtimer_info = {
+    .maxfreq = 1000000UL,
+    .minfreq = 1000000UL,
+    .maxcnt = 0xFFFF,
+    .cntmode = HWTIMER_MODE_PERIOD
+};
+
+#ifdef BSP_USING_TIMER0
+static _timer_t timer0 = {.name = "timer0"};
+#endif /* BSP_USING_TIMER0 */
+#ifdef BSP_USING_TIMER1
+static _timer_t timer1 = {.name = "timer1" };
+#endif /* BSP_USING_TIMER1 */
+#ifdef BSP_USING_TIMER2
+static _timer_t timer0 = {.name = "timer2"};
+#endif /* BSP_USING_TIMER2 */
+#ifdef BSP_USING_TIMER3
+static _timer_t timer1 = {.name = "timer3" };
+#endif /* BSP_USING_TIMER3 */
+
+static _timer_t *_timer_obj[] = {
+#ifdef BSP_USING_TIMER0
+        &timer0,
+#endif  /* BSP_USING_TIMER0 */
+#ifdef BSP_USING_TIMER1
+        &timer1,
+#endif /* BSP_USING_TIMER1 */
+#ifdef BSP_USING_TIMER2
+        &timer2,
+#endif  /* BSP_USING_TIMER2 */
+#ifdef BSP_USING_TIMER3
+        &timer3,
+#endif /* BSP_USING_TIMER3 */
+};
+
+static int64_t _hwtmr_isr(alarm_id_t id, void *user_data)
+{
+    _timer_t *_tmr = rt_container_of(id, _timer_t, alarm_id);
+    rt_device_hwtimer_isr(&_tmr->timer);
+    return RT_TRUE;
+}
+
+static bool _repeat_timer_isr(struct repeating_timer *t)
+{
+    _timer_t *_tmr = rt_container_of(t, _timer_t, repeat_timer);
+    rt_device_hwtimer_isr(&_tmr->timer);
+    return RT_TRUE;
+}
+
+static void _hwtimer_init(rt_hwtimer_t *timer, rt_uint32_t state)
+{
+}
+
+static rt_err_t _hwtimer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t mode)
+{
+    _timer_t *_tmr = rt_container_of(timer, _timer_t, timer);
+
+    if(mode == HWTIMER_MODE_ONESHOT)
+        _tmr->alarm_id = add_alarm_in_us(cnt, _hwtmr_isr, RT_NULL, RT_TRUE);
+    else
+        add_repeating_timer_us(cnt, _repeat_timer_isr, RT_NULL, &_tmr->repeat_timer);
+
+    return RT_EOK;
+}
+
+static void _hwtimer_stop(rt_hwtimer_t *timer)
+{
+    _timer_t *_tmr = rt_container_of(timer, _timer_t, timer);
+    if(timer->mode == HWTIMER_MODE_ONESHOT)
+        cancel_alarm(_tmr->alarm_id);
+    else
+        cancel_repeating_timer(&_tmr->repeat_timer);
+}
+
+static rt_uint32_t _hwtimer_count_get(rt_hwtimer_t *timer)
+{
+    _timer_t *_tmr = rt_container_of(timer, _timer_t, timer);
+
+    return timer_hw->alarm[_tmr->alarm_id];
+}
+
+static rt_err_t _hwtimer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *args)
+{
+    rt_err_t err = RT_EOK;
+    _timer_t *_tmr = rt_container_of(timer, _timer_t, timer);
+
+    switch (cmd)
+    {
+    case HWTIMER_CTRL_FREQ_SET:
+        err = -RT_ERROR;
+        break;
+    case HWTIMER_CTRL_INFO_GET:
+        *(rt_hwtimer_t*)args = _tmr->timer;
+        break;
+    case HWTIMER_CTRL_MODE_SET:
+        _tmr->timer.mode = *(rt_uint32_t*)args;
+        break;
+    case HWTIMER_CTRL_STOP:
+        _hwtimer_stop(timer);
+        break;
+    }
+
+    return err;
+}
+
+int rt_hw_hwtimer_init(void)
+{
+    int ret = RT_EOK;
+
+    for (uint32_t i = 0; i < sizeof(_timer_obj) / sizeof(_timer_obj[0]); i++)
+    {
+        _timer_obj[i]->timer.info = &_hwtimer_info;
+        _timer_obj[i]->timer.ops = &_hwtimer_ops;
+        ret = rt_device_hwtimer_register(&_timer_obj[i]->timer, _timer_obj[i]->name, _timer_obj[i]);
+        if (ret != RT_EOK)
+        {
+            LOG_E("%s register failed", _timer_obj[i]->name);
+        }
+    }
+
+    return ret;
+}
+
+INIT_DEVICE_EXPORT(rt_hw_hwtimer_init);
+#endif /* BSP_USING_HWTIMER */
diff --git a/bsp/raspberry-pico/drivers/drv_hwtimer.h b/bsp/raspberry-pico/drivers/drv_hwtimer.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date             Author           Notes
+ * 2023-10-30       ChuShicheng      first version
+ */
+#ifndef DRV_HWTIMER_H
+#define DRV_HWTIMER_H
+
+#include <rtdevice.h>
+
+int rt_hw_hwtimer_init(void);
+
+#endif /* DRV_HWTIMER_H */