[bsp/nrf5x]: add the driver of pwm

bsp/nrf5x/libraries/drivers/SConscript

@@ -19,8 +19,12 @@ if GetDepend(['BSP_USING_QSPI_FLASH']):
 
 if GetDepend(['BSP_USING_SPI']):
     src += ['drv_spi.c']
+    
 if GetDepend(['BSP_USING_GPIO']):
     src += ['drv_gpio.c']
+    
+if GetDepend(['BSP_USING_PWM']):
+    src += ['drv_pwm.c']
 
 path =  [cwd]
 

bsp/nrf5x/libraries/drivers/drv_pwm.c

@@ -0,0 +1,432 @@
+/*
+ * Copyright (c) 2006-2020, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-07-26     supperthomas first version
+ *
+ */
+
+
+#include <board.h>
+#include "rtdevice.h"
+#include "rtservice.h"
+
+#ifdef RT_USING_PWM
+
+#include <nrfx_pwm.h>
+
+struct mcu_pwm
+{
+    struct rt_device_pwm pwm_device;
+    
+    nrfx_pwm_t *pwm_handle;
+    nrf_pwm_values_individual_t m_demo1_seq_values;
+    nrf_pwm_sequence_t m_demo1_seq;
+
+    rt_uint8_t channel;
+    char *name;
+    rt_uint64_t pwm_src_clk;
+    uint8_t channel_0_pin;
+    uint8_t channel_1_pin;
+    uint8_t channel_2_pin;
+    uint8_t channel_3_pin;
+};
+
+enum
+{
+#ifdef BSP_USING_PWM0
+    PWM0_INDEX,
+#endif
+#ifdef BSP_USING_PWM1
+    PWM1_INDEX,
+#endif
+#ifdef BSP_USING_PWM2
+    PWM2_INDEX,
+#endif
+#ifdef BSP_USING_PWM3
+    PWM3_INDEX,
+#endif
+};
+#ifdef BSP_USING_PWM0
+static nrfx_pwm_t m_pwm0 = NRFX_PWM_INSTANCE(0);
+#define PWM0_CONFIG                             \
+    {                                           \
+       .pwm_handle              =  &m_pwm0,     \
+       .name                    = "pwm0",       \
+       .pwm_src_clk             = 1000000,      \
+    }
+#endif
+
+#ifdef BSP_USING_PWM1
+static nrfx_pwm_t m_pwm1 = NRFX_PWM_INSTANCE(1);
+#define PWM1_CONFIG                             \
+    {                                           \
+       .pwm_handle              =  &m_pwm1,         \
+       .name                    = "pwm1",       \
+       .pwm_src_clk             = 1000000,             \
+    }
+#endif
+
+#ifdef BSP_USING_PWM2
+static nrfx_pwm_t m_pwm2 = NRFX_PWM_INSTANCE(2);
+#define PWM2_CONFIG                             \
+    {                                           \
+       .pwm_handle              =  &m_pwm2,         \
+       .name                    = "pwm2",       \
+       .pwm_src_clk             = 1000000,             \
+    }
+#endif
+
+#ifdef BSP_USING_PWM3
+static nrfx_pwm_t m_pwm3 = NRFX_PWM_INSTANCE(3);
+#define PWM3_CONFIG                             \
+    {                                           \
+       .pwm_handle              =  &m_pwm3,         \
+       .name                    = "pwm3",       \
+       .pwm_src_clk             = 1000000,             \
+    }
+#endif
+
+static struct mcu_pwm mcu_pwm_obj[] =
+{
+#ifdef BSP_USING_PWM0
+    PWM0_CONFIG,
+#endif
+#ifdef BSP_USING_PWM1
+    PWM1_CONFIG,
+#endif
+
+#ifdef BSP_USING_PWM2
+    PWM2_CONFIG,
+#endif
+
+#ifdef BSP_USING_PWM3
+    PWM3_CONFIG,
+#endif
+};
+
+static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg);
+static struct rt_pwm_ops drv_ops =
+{
+    drv_pwm_control
+};
+
+static rt_err_t drv_pwm_enable(struct mcu_pwm *p_mcu, struct rt_pwm_configuration *configuration, rt_bool_t enable)
+{
+    if (!enable)
+    {
+        nrfx_pwm_stop(p_mcu->pwm_handle, true);
+    }
+    else
+    {
+        (void)nrfx_pwm_simple_playback(p_mcu->pwm_handle, &p_mcu->m_demo1_seq, 1, NRFX_PWM_FLAG_LOOP);
+    }
+
+    return RT_EOK;
+}
+
+uint8_t mcu_get_channel_number(uint8_t channel)
+{
+    if (channel & 0x01)
+    {
+        return 0;
+    }
+    else if (channel & 0x02)
+    {
+        return 1;
+    }
+    else if (channel & 0x04)
+    {
+        return 2;
+    }
+    else if (channel & 0x08)
+    {
+        return 3;
+    }
+    return 0;
+}
+
+static rt_err_t drv_pwm_get(struct mcu_pwm *pwm_handle, struct rt_pwm_configuration *configuration)
+{
+    rt_uint8_t channel_number = mcu_get_channel_number(configuration->channel);
+    uint8_t tick_pscond;
+
+    tick_pscond = pwm_handle->pwm_src_clk / 1000000UL;
+    configuration->period = pwm_handle->pwm_handle->p_registers->COUNTERTOP * 1000UL / tick_pscond;
+    configuration->pulse = pwm_handle->pwm_handle->p_registers->SEQ[channel_number].PTR / tick_pscond;
+
+    return RT_EOK;
+}
+
+static void nrfx_set_prioid(nrfx_pwm_t *pwm_handle, uint32_t perioid)
+{
+    pwm_handle->p_registers->COUNTERTOP = perioid;
+}
+
+static rt_err_t drv_pwm_set(struct mcu_pwm *p_mcu, struct rt_pwm_configuration *configuration)
+{
+    rt_uint32_t period, pulse;
+    uint8_t tick_pscond;
+    tick_pscond = p_mcu->pwm_src_clk / 1000000UL;
+
+    p_mcu->pwm_handle->p_registers->COUNTERTOP = (unsigned long long)configuration->period * tick_pscond;
+    if (configuration->channel & 0x01)
+    {
+        p_mcu->m_demo1_seq_values.channel_0 = configuration->pulse;
+    }
+
+    if (configuration->channel & 0x02)
+    {
+        p_mcu->m_demo1_seq_values.channel_1 = configuration->pulse;
+    }
+
+    if (configuration->channel & 0x04)
+    {
+        p_mcu->m_demo1_seq_values.channel_2 = configuration->pulse;
+    }
+
+    if (configuration->channel & 0x08)
+    {
+        p_mcu->m_demo1_seq_values.channel_3 = configuration->pulse;
+    }
+    return RT_EOK;
+}
+
+static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg)
+{
+    struct rt_pwm_configuration *configuration = (struct rt_pwm_configuration *)arg;
+    void *pwm_handle = (void *)device->parent.user_data;
+    nrfx_pwm_t *p_handle = (nrfx_pwm_t *)pwm_handle;
+    struct mcu_pwm *p_mcu = rt_container_of(p_handle, struct mcu_pwm, pwm_handle);
+    switch (cmd)
+    {
+    case PWM_CMD_ENABLE:
+        return drv_pwm_enable(p_mcu, configuration, RT_TRUE);
+    case PWM_CMD_DISABLE:
+        return drv_pwm_enable(p_mcu, configuration, RT_FALSE);
+    case PWM_CMD_SET:
+        return drv_pwm_set(p_mcu, configuration);
+    case PWM_CMD_GET:
+        return drv_pwm_get(p_mcu, configuration);
+    default:
+        return RT_EINVAL;
+    }
+}
+
+static rt_err_t mcu_hw_pwm_init(struct mcu_pwm *device)
+{
+#define NRFX_PWM_PIN_INVERTED    0x80
+#define _PRIO_APP_LOWEST    7
+    nrfx_pwm_config_t config0 =
+    {
+        .irq_priority = _PRIO_APP_LOWEST,
+        .base_clock   = NRF_PWM_CLK_1MHz,  //default value
+        .count_mode   = NRF_PWM_MODE_UP,
+        .top_value    = 5000,              //default vaule
+        .load_mode    = NRF_PWM_LOAD_INDIVIDUAL,
+        .step_mode    = NRF_PWM_STEP_AUTO
+    };
+    rt_err_t result = RT_EOK;
+    if (device->pwm_src_clk == 1000000)
+    {
+        config0.base_clock = NRF_PWM_CLK_1MHz;
+    }
+    else if (device->pwm_src_clk == 2000000)
+    {
+        config0.base_clock = NRF_PWM_CLK_2MHz;
+    }
+    else if (device->pwm_src_clk == 8000000)
+    {
+        config0.base_clock = NRF_PWM_CLK_8MHz;
+    }
+    else
+    {
+        config0.base_clock = NRF_PWM_CLK_1MHz;
+    }
+
+    if (device->channel & 0x01)
+    {
+        config0.output_pins[0] = device->channel_0_pin | NRFX_PWM_PIN_INVERTED;
+    }
+
+    if (device->channel & 0x02)
+    {
+        config0.output_pins[1] = device->channel_1_pin | NRFX_PWM_PIN_INVERTED;
+    }
+
+    if (device->channel & 0x04)
+    {
+        config0.output_pins[2] = device->channel_2_pin | NRFX_PWM_PIN_INVERTED;
+    }
+
+    if (device->channel & 0x08)
+    {
+        config0.output_pins[3] = device->channel_3_pin | NRFX_PWM_PIN_INVERTED;
+    }
+    device->m_demo1_seq.values.p_individual = &device->m_demo1_seq_values;
+    device->m_demo1_seq.length = NRF_PWM_VALUES_LENGTH(device->m_demo1_seq_values),
+                        nrfx_pwm_init(device->pwm_handle, &config0, NULL, NULL);
+    return result;
+}
+
+static void pwm_get_channel(void)
+{
+#ifdef BSP_USING_PWM0_CH0
+    mcu_pwm_obj[PWM0_INDEX].channel |= 1 << 0;
+    mcu_pwm_obj[PWM0_INDEX].channel_0_pin = BSP_USING_PWM0_CH0;
+#endif
+#ifdef BSP_USING_PWM0_CH1
+    mcu_pwm_obj[PWM0_INDEX].channel |= 1 << 1;
+    mcu_pwm_obj[PWM0_INDEX].channel_1_pin = BSP_USING_PWM0_CH1;
+#endif
+#ifdef BSP_USING_PWM0_CH2
+    mcu_pwm_obj[PWM0_INDEX].channel |= 1 << 2;
+    mcu_pwm_obj[PWM0_INDEX].channel_2_pin = BSP_USING_PWM0_CH2;
+#endif
+#ifdef BSP_USING_PWM0_CH3
+    mcu_pwm_obj[PWM0_INDEX].channel |= 1 << 3;
+    mcu_pwm_obj[PWM0_INDEX].channel_3_pin = BSP_USING_PWM0_CH3;
+#endif
+#ifdef BSP_USING_PWM1_CH0
+    mcu_pwm_obj[PWM1_INDEX].channel |= 1 << 0;
+    mcu_pwm_obj[PWM1_INDEX].channel_0_pin = BSP_USING_PWM1_CH0;
+#endif
+#ifdef BSP_USING_PWM1_CH1
+    mcu_pwm_obj[PWM1_INDEX].channel |= 1 << 1;
+    mcu_pwm_obj[PWM1_INDEX].channel_1_pin = BSP_USING_PWM1_CH1;
+#endif
+#ifdef BSP_USING_PWM1_CH2
+    mcu_pwm_obj[PWM1_INDEX].channel |= 1 << 2;
+    mcu_pwm_obj[PWM1_INDEX].channel_2_pin = BSP_USING_PWM1_CH2;
+#endif
+#ifdef BSP_USING_PWM1_CH3
+    mcu_pwm_obj[PWM1_INDEX].channel |= 1 << 3;
+    mcu_pwm_obj[PWM1_INDEX].channel_3_pin = BSP_USING_PWM1_CH3;
+#endif
+#ifdef BSP_USING_PWM2_CH0
+    mcu_pwm_obj[PWM2_INDEX].channel |= 1 << 0;
+    mcu_pwm_obj[PWM2_INDEX].channel_0_pin = BSP_USING_PWM2_CH0;
+#endif
+#ifdef BSP_USING_PWM2_CH1
+    mcu_pwm_obj[PWM2_INDEX].channel |= 1 << 1;
+    mcu_pwm_obj[PWM2_INDEX].channel_1_pin = BSP_USING_PWM2_CH1;
+#endif
+#ifdef BSP_USING_PWM2_CH2
+    mcu_pwm_obj[PWM2_INDEX].channel |= 1 << 2;
+    mcu_pwm_obj[PWM2_INDEX].channel_2_pin = BSP_USING_PWM2_CH2;
+#endif
+#ifdef BSP_USING_PWM2_CH3
+    mcu_pwm_obj[PWM2_INDEX].channel |= 1 << 3;
+    mcu_pwm_obj[PWM2_INDEX].channel_3_pin = BSP_USING_PWM2_CH3;
+#endif
+#ifdef BSP_USING_PWM3_CH0
+    mcu_pwm_obj[PWM3_INDEX].channel |= 1 << 0;
+    mcu_pwm_obj[PWM3_INDEX].channel_0_pin = BSP_USING_PWM3_CH0;
+#endif
+#ifdef BSP_USING_PWM3_CH1
+    mcu_pwm_obj[PWM3_INDEX].channel |= 1 << 1;
+    mcu_pwm_obj[PWM3_INDEX].channel_1_pin = BSP_USING_PWM3_CH1;
+#endif
+#ifdef BSP_USING_PWM3_CH2
+    mcu_pwm_obj[PWM3_INDEX].channel |= 1 << 2;
+    mcu_pwm_obj[PWM3_INDEX].channel_2_pin = BSP_USING_PWM3_CH2;
+#endif
+#ifdef BSP_USING_PWM3_CH3
+    mcu_pwm_obj[PWM3_INDEX].channel |= 1 << 3;
+    mcu_pwm_obj[PWM3_INDEX].channel_3_pin = BSP_USING_PWM3_CH3;
+#endif
+}
+
+static int mcu_pwm_init(void)
+{
+    int i = 0;
+    int result = RT_EOK;
+
+    pwm_get_channel();
+    for (i = 0; i < sizeof(mcu_pwm_obj) / sizeof(mcu_pwm_obj[0]); i++)
+    {
+        /* pwm init */
+        if (mcu_hw_pwm_init(&mcu_pwm_obj[i]) != RT_EOK)
+        {
+            rt_kprintf("\r\n %s init failed", mcu_pwm_obj[i].name);
+            result = -RT_ERROR;
+            goto __exit;
+        }
+        else
+        {
+            rt_kprintf("\r\n %s init success", mcu_pwm_obj[i].name);
+
+            /* register pwm device */
+            if (rt_device_pwm_register(&mcu_pwm_obj[i].pwm_device, mcu_pwm_obj[i].name, &drv_ops, &mcu_pwm_obj[i].pwm_handle) == RT_EOK)
+            {
+                rt_kprintf("\r\n %s register success", mcu_pwm_obj[i].name);
+            }
+            else
+            {
+                rt_kprintf("\r\n %s register failed", mcu_pwm_obj[i].name);
+                result = -RT_ERROR;
+            }
+        }
+    }
+__exit:
+    return result;
+}
+INIT_DEVICE_EXPORT(mcu_pwm_init);
+
+
+
+/* test example */
+#define PWM_DEV_NAME        "pwm0"  /* PWM  name*/
+#define PWM_DEV_CHANNEL     15       /* PWM  channel */
+
+struct rt_device_pwm *pwm_dev;
+
+static int pwm_led_sample(int argc, char *argv[])
+{
+    rt_uint32_t period, pulse, dir;
+
+    period = 50000;   /* 50ms*/
+    dir = 1;
+    pulse = 0;
+
+
+    pwm_dev = (struct rt_device_pwm *)rt_device_find(PWM_DEV_NAME);
+    if (pwm_dev == RT_NULL)
+    {
+        rt_kprintf("pwm sample run failed! can't find %s device!\n", PWM_DEV_NAME);
+        return RT_ERROR;
+    }
+
+    rt_pwm_set(pwm_dev, PWM_DEV_CHANNEL, period, pulse);
+    rt_pwm_enable(pwm_dev, PWM_DEV_CHANNEL);
+
+    while (1)
+    {
+        rt_thread_mdelay(50);
+        if (dir)
+        {
+            pulse += 500;
+        }
+        else
+        {
+            pulse -= 500;
+        }
+        if (pulse >= period)
+        {
+            dir = 0;
+        }
+        if (0 == pulse)
+        {
+            dir = 1;
+        }
+
+
+        rt_pwm_set(pwm_dev, PWM_DEV_CHANNEL, period, pulse);
+    }
+}
+MSH_CMD_EXPORT(pwm_led_sample, pwm sample);
+
+#endif

bsp/nrf5x/nrf52840/board/Kconfig

@@ -7,6 +7,12 @@ config SOC_NRF52840
     select RT_USING_USER_MAIN
     default y
 
+config SOC_NORDIC
+    bool 
+    config SOC_NORDIC
+    default y
+
+
 menu "Onboard Peripheral Drivers"
     config BSP_USING_JLINK_TO_USART
         bool "Enable JLINK TO USART (uart0|RX_PIN:8|TX_PIN:6)"
@@ -55,38 +61,142 @@ menu "On-chip Peripheral Drivers"
         bool "Enable GPIO"
         select RT_USING_PIN
         default y
+    menuconfig BSP_USING_PWM
+        bool "Enable PWM"
+        select RT_USING_PWM
+        default n
+        if BSP_USING_PWM
+                config NRFX_PWM_ENABLED
+                int 
+                default 1
+                config BSP_USING_PWM0
+                    bool "Enable PWM0 bus"
+                    default y
+                if BSP_USING_PWM0
+                    config NRFX_PWM0_ENABLED
+                    int 
+                    default 1
+                    config BSP_USING_PWM0_CH0
+                        int "PWM0 channel 0 pin number set"
+                        range 0 47
+                        default 13
+                    config BSP_USING_PWM0_CH1
+                        int "PWM0 channel 1 pin number set"
+                        range 0 47
+                        default 14
+                    config BSP_USING_PWM0_CH2
+                        int "PWM0 channel 2 pin number set"
+                        range 0 47
+                        default 15
+                    config BSP_USING_PWM0_CH3
+                        int "PWM0 channel 3 pin number set"
+                        range 0 47
+                        default 16
+                endif
+                config BSP_USING_PWM1
+                    bool "Enable PWM1 bus"
+                    default n
+                if BSP_USING_PWM1
+                    config NRFX_PWM1_ENABLED
+                    int 
+                    default 1
+                    config BSP_USING_PWM1_CH0
+                        int "PWM1 channel 0 pin number set"
+                        range 0 47
+                        default 13
+                    config BSP_USING_PWM1_CH1
+                        int "PWM1 channel 1 pin number set"
+                        range 0 47
+                        default 14
+                    config BSP_USING_PWM1_CH2
+                        int "PWM1 channel 2 pin number set"
+                        range 0 47
+                        default 15
+                    config BSP_USING_PWM1_CH3
+                        int "PWM1 channel 3 pin number set"
+                        range 0 47
+                        default 16
+                endif
+                config BSP_USING_PWM2
+                    bool "Enable PWM2 bus"
+                    default n
+                if BSP_USING_PWM2
+                    config NRFX_PWM2_ENABLED
+                    int 
+                    default 1
+                    config BSP_USING_PWM2_CH0
+                        int "PWM2 channel 0 pin number set"
+                        range 0 47
+                        default 13
+                    config BSP_USING_PWM2_CH1
+                        int "PWM2 channel 1 pin number set"
+                        range 0 47
+                        default 14
+                    config BSP_USING_PWM2_CH2
+                        int "PWM2 channel 2 pin number set"
+                        range 0 47
+                        default 15
+                    config BSP_USING_PWM2_CH3
+                        int "PWM2 channel 3 pin number set"
+                        range 0 47
+                        default 16
+                endif
+                config BSP_USING_PWM3
+                    bool "Enable PWM3 bus"
+                    default n
+                if BSP_USING_PWM3
+                    config NRFX_PWM3_ENABLED
+                    int 
+                    default 1
+                    config BSP_USING_PWM3_CH0
+                        int "PWM3 channel 0 pin number set"
+                        range 0 47
+                        default 13
+                    config BSP_USING_PWM3_CH1
+                        int "PWM3 channel 1 pin number set"
+                        range 0 47
+                        default 14
+                    config BSP_USING_PWM3_CH2
+                        int "PWM3 channel 2 pin number set"
+                        range 0 47
+                        default 15
+                    config BSP_USING_PWM3_CH3
+                        int "PWM3 channel 3 pin number set"
+                        range 0 47
+                        default 16
+                endif
+        endif
     menuconfig BSP_USING_SOFTDEVICE
         bool "Enable NRF SOFTDEVICE"
         select PKG_USING_NRF5X_SDK
+        select NRFX_CLOCK_ENABLED
         default n
 if BSP_USING_SOFTDEVICE
     config NRFX_CLOCK_ENABLED
-	int "NRFX_CLOCK_ENABLED"
+    int 
     default 1
-	config NRFX_CLOCK_DEFAULT_CONFIG_IRQ_PRIORITY
-	int "NRFX_CLOCK_DEFAULT_CONFIG_IRQ_PRIORITY"
+    config NRFX_CLOCK_DEFAULT_CONFIG_IRQ_PRIORITY
+    int 
     default 7
-	config NRFX_CLOCK_DEFAULT_CONFIG_IRQ_PRIORITY
-	int "NRFX_CLOCK_DEFAULT_CONFIG_IRQ_PRIORITY"
-    default 7
-	config NRFX_RTC_ENABLED
-	int "NRFX_RTC_ENABLED"
+    config NRFX_RTC_ENABLED
+    int 
+    default 1
+    config NRFX_RTC1_ENABLED
+    int 
     default 1
-	config NRF_CLOCK_ENABLED
-	int "NRF_CLOCK_ENABLED"
+    config NRF_CLOCK_ENABLED
+    int 
     default 1
-	config NRF_SDH_BLE_ENABLED
-	int "NRF_SDH_BLE_ENABLED"
+    config NRF_SDH_BLE_ENABLED
+    int 
     default 1
-	config NRF_SDH_ENABLED
-	int "NRF_SDH_ENABLED"
+    config NRF_SDH_ENABLED
+    int 
     default 1
-	config NRF_SDH_SOC_ENABLED
-	int "NRF_SDH_SOC_ENABLED"
+    config NRF_SDH_SOC_ENABLED
+    int 
     default 1
-	
 endif
-
     menuconfig BSP_USING_UART
         bool "Enable UART"
         default y