first commit

application/samples/peripheral/pwm_light/CMakeLists.txt

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+#===============================================================================
+# @brief    cmake file
+# Copyright (c) HiSilicon (Shanghai) Technologies Co., Ltd. 2023-2023. All rights reserved.
+#===============================================================================
+set(SOURCES "${SOURCES}" "${CMAKE_CURRENT_SOURCE_DIR}/pwm_demo.c" PARENT_SCOPE)

application/samples/peripheral/pwm_light/Kconfig

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+#===============================================================================
+# @brief    Kconfig file.
+# Copyright (c) HiSilicon (Shanghai) Technologies Co., Ltd. 2023-2023. All rights reserved.
+#===============================================================================
+config PWM_CHANNEL
+    int
+    prompt "Choose PWM Test Channel."
+    depends on SAMPLE_SUPPORT_PWM
+    default 0
+
+config PWM_GROUP_ID
+    int
+    prompt "Choose PWM Test Group ID."
+    depends on SAMPLE_SUPPORT_PWM && PWM_USING_V151
+    default 0
+
+config PWM_PIN
+    int
+    prompt "Choose PWM pin."
+    depends on SAMPLE_SUPPORT_PWM
+    default 20
+
+config PWM_PIN_MODE
+    int
+    prompt "Choose PWM pin mode."
+    default 3
+    depends on SAMPLE_SUPPORT_PWM
+

application/samples/peripheral/pwm_light/pwm.code-workspace

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+{
+	"folders": [
+		{
+			"path": "../../../../"
+		}
+	],
+	"settings": {
+		"debug.onTaskErrors": "debugAnyway",
+		"workspace.samplePath": "./samples/peripheral/pwm"
+	}
+}

application/samples/peripheral/pwm_light/pwm_demo.c

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+#include "pinctrl.h"
+#include "gpio.h"
+#include "pwm.h"
+#include "timer.h"
+
+#define LIGHT_GPIO_W    GPIO_02
+#define LIGHT_GPIO_Y    GPIO_08
+
+static uint32_t period_ns = 40000;  //80M/2K
+static uint8_t channel_id_w = 0;
+static uint8_t channel_id_y = 0;
+static uint32_t high_ns = 0;
+static uint32_t low_ns = 0;
+void hfgpio_pwm_init(void)
+{
+    high_ns = ((period_ns / 1000) * 0) / 1000; // 高电平时间
+    low_ns = period_ns - high_ns;              // 低电平时间
+    pwm_config_t cfg_no_repeat = {
+        low_ns,
+        high_ns,
+        0,
+        0xFF,
+        true
+    };
+    channel_id_w = LIGHT_GPIO_W % 8;
+    channel_id_y = LIGHT_GPIO_Y % 8;
+
+    uapi_pin_set_mode(LIGHT_GPIO_W, PIN_MODE_1);
+    uapi_pin_set_mode(LIGHT_GPIO_Y, PIN_MODE_1);
+    uapi_pwm_deinit();
+    uapi_pwm_init();
+    uapi_pwm_open(channel_id_w, &cfg_no_repeat);
+    uapi_pwm_set_group(channel_id_w, &channel_id_w, 1);
+    uapi_pwm_start_group(channel_id_w);
+
+    uapi_pwm_open(channel_id_y, &cfg_no_repeat);
+    uapi_pwm_set_group(channel_id_y, &channel_id_y, 1);
+    uapi_pwm_start_group(channel_id_y);
+}
+
+static void hfgpio_pwm_update(int fid, uint32_t hrate)
+{
+    high_ns = ((period_ns / 1000) * hrate) / 1000; // 高电平时间
+    low_ns = period_ns - high_ns;                  // 低电平时间
+
+    if(fid == LIGHT_GPIO_W){
+        uapi_pwm_update_duty_ratio(channel_id_w, low_ns, high_ns);
+        uapi_pwm_start_group(channel_id_w);
+    }else if(fid == LIGHT_GPIO_Y){
+        uapi_pwm_update_duty_ratio(channel_id_y, low_ns, high_ns);
+        uapi_pwm_start_group(channel_id_y);
+    }
+}
+
+static int pwm_hrate = 0;
+static int dir_flag = 0;
+static timer_handle_t timer1_handle = 0;
+static void light_dim_timer_callback(uintptr_t data)
+{
+    if(data){}
+    if(dir_flag == 0){
+        pwm_hrate++;
+        if(pwm_hrate == 1000){
+            dir_flag = 1;
+        }
+    }
+    else if(dir_flag == 1){
+        pwm_hrate--;
+        if(pwm_hrate == 0){
+            dir_flag = 0;
+        }
+    }
+    hfgpio_pwm_update(LIGHT_GPIO_W, pwm_hrate);
+    hfgpio_pwm_update(LIGHT_GPIO_Y, pwm_hrate);
+
+    uapi_timer_start(timer1_handle, 5000, light_dim_timer_callback, 0);
+}
+
+void light_hwtimer_dim_entry(void)
+{
+    uapi_timer_init();
+    int ret = 0;
+    ret = uapi_timer_adapter(TIMER_INDEX_1, TIMER_1_IRQN, 1);
+    ret = uapi_timer_create(TIMER_INDEX_1, &timer1_handle);
+    ret = uapi_timer_start(timer1_handle, 1000, light_dim_timer_callback, 0);
+    if(ret != 0)
+        osal_printk("hwtimer start fail\r\n");
+    else
+        osal_printk("hwtimer start success\r\n");
+}
+
+void pwm_test(void)
+{
+	hfgpio_pwm_init();
+	light_hwtimer_dim_entry();
+}