1.新增STM32-ADC驱动。

bsp/st/driver/drv_adc.c

@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2023, mr-library Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-10-15     MacRsh       first version
+ */
+
+#include "drv_adc.h"
+
+#if (MR_CFG_ADC == MR_CFG_ENABLE)
+
+static mr_uint32_t stm32_adc_channel[] =
+    {
+        ADC_CHANNEL_0,
+        ADC_CHANNEL_1,
+        ADC_CHANNEL_2,
+        ADC_CHANNEL_3,
+        ADC_CHANNEL_4,
+        ADC_CHANNEL_5,
+        ADC_CHANNEL_6,
+        ADC_CHANNEL_7,
+        ADC_CHANNEL_8,
+        ADC_CHANNEL_9,
+        ADC_CHANNEL_10,
+        ADC_CHANNEL_11,
+        ADC_CHANNEL_12,
+        ADC_CHANNEL_13,
+        ADC_CHANNEL_14,
+        ADC_CHANNEL_15,
+#ifdef ADC_CHANNEL_16
+        ADC_CHANNEL_16,
+#endif
+#ifdef ADC_CHANNEL_17
+        ADC_CHANNEL_17,
+#endif
+#ifdef ADC_CHANNEL_18
+        ADC_CHANNEL_18,
+#endif
+    };
+
+static struct drv_adc_data drv_adc_data[] =
+    {
+#ifdef MR_BSP_ADC_1
+        {"adc1", {0}, ADC1},
+#endif
+#ifdef MR_BSP_ADC_2
+        {"adc2", {0}, ADC2},
+#endif
+#ifdef MR_BSP_ADC_3
+        {"adc3", {0}, ADC3},
+#endif
+    };
+
+static struct mr_adc adc_device[mr_array_num(drv_adc_data)];
+
+static mr_err_t drv_adc_configure(mr_adc_t adc, mr_state_t state)
+{
+    struct drv_adc_data *adc_data = (struct drv_adc_data *)adc->device.data;
+
+    adc_data->handle.Instance = adc_data->instance;
+
+    adc_data->handle.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
+    adc_data->handle.Init.Resolution = ADC_RESOLUTION_12B;
+    adc_data->handle.Init.ScanConvMode = DISABLE;
+    adc_data->handle.Init.ContinuousConvMode = DISABLE;
+    adc_data->handle.Init.DiscontinuousConvMode = DISABLE;
+    adc_data->handle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
+    adc_data->handle.Init.ExternalTrigConv = ADC_SOFTWARE_START;
+    adc_data->handle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
+    adc_data->handle.Init.NbrOfConversion = 1;
+    adc_data->handle.Init.DMAContinuousRequests = DISABLE;
+    adc_data->handle.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
+    if (HAL_ADC_Init(&adc_data->handle) != HAL_OK)
+    {
+        return MR_ERR_GENERIC;
+    }
+
+    return MR_ERR_OK;
+}
+
+static mr_err_t drv_adc_channel_configure(mr_adc_t adc, mr_adc_config_t config)
+{
+    struct drv_adc_data *adc_data = (struct drv_adc_data *)adc->device.data;
+    ADC_ChannelConfTypeDef channel_config = {0};
+    mr_size_t count = 0;
+
+    for (count = 0; count < (mr_size_t)mr_array_num(stm32_adc_channel); count++)
+    {
+        if (((1 << count) & config->channel._mask))
+        {
+            channel_config.Channel = stm32_adc_channel[count];
+            channel_config.Rank = 1;
+            channel_config.SamplingTime = ADC_SAMPLETIME_56CYCLES;
+            if (HAL_ADC_ConfigChannel(&adc_data->handle, &channel_config) != HAL_OK)
+            {
+                return MR_ERR_GENERIC;
+            }
+        }
+    }
+
+    return MR_ERR_OK;
+}
+
+static mr_uint32_t drv_adc_read(mr_adc_t adc, mr_off_t channel)
+{
+    struct drv_adc_data *adc_data = (struct drv_adc_data *)adc->device.data;
+    mr_size_t i = 0;
+
+    HAL_ADC_Start(&adc_data->handle);
+    while (__HAL_ADC_GET_FLAG(&adc_data->handle, ADC_FLAG_EOC) == RESET)
+    {
+        i++;
+        if (i > MR_UINT16_MAX)
+        {
+            return 0;
+        }
+    }
+    return (mr_uint32_t)HAL_ADC_GetValue(&adc_data->handle);
+}
+
+mr_err_t drv_adc_init(void)
+{
+    static struct mr_adc_ops drv_ops =
+        {
+            drv_adc_configure,
+            drv_adc_channel_configure,
+            drv_adc_read,
+        };
+    mr_size_t count = mr_array_num(adc_device);
+    mr_err_t ret = MR_ERR_OK;
+
+    while (count--)
+    {
+        ret = mr_adc_device_add(&adc_device[count], drv_adc_data[count].name, &drv_ops, &drv_adc_data[count]);
+        MR_ASSERT(ret == MR_ERR_OK);
+    }
+
+    return ret;
+}
+MR_INIT_DRIVER_EXPORT(drv_adc_init);
+
+#endif

bsp/st/driver/drv_adc.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2023, mr-library Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-10-08     MacRsh       first version
+ */
+
+#ifndef _DRV_ADC_H_
+#define _DRV_ADC_H_
+
+#include "device/adc.h"
+#include "mrboard.h"
+
+#if (MR_CFG_ADC == MR_CFG_ENABLE)
+
+/**
+ * @struct Driver adc data
+ */
+struct drv_adc_data
+{
+    const char *name;
+
+    ADC_HandleTypeDef handle;
+    ADC_TypeDef *instance;
+};
+
+#endif
+
+#endif /* _DRV_ADC_H_ */