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Day4/day4.c

@@ -0,0 +1,66 @@
+#include <rtthread.h>
+#include <rtdevice.h>
+
+#if defined(BSP_USING_TEST)
+
+#define DRV_DEBUG
+#define LOG_TAG "drv.test"
+#include <drv_log.h>
+
+static rt_err_t dev_test_init(rt_device_t dev)
+{
+    LOG_I("test dev init");
+    return RT_EOK;
+}
+static rt_err_t dev_test_open(rt_device_t dev,rt_uint16_t oflag)
+{
+    LOG_I("test dev open flag = %d",oflag);
+    return RT_EOK;
+}
+static rt_err_t dev_test_close(rt_device_t dev)
+{
+    LOG_I("test dev close");
+    return RT_EOK;
+}
+static rt_ssize_t dev_test_read(rt_device_t dev,rt_off_t pos,void *buffer,rt_size_t size)
+{
+    LOG_I("test dev read pos = %d,size = %d",pos,size);
+    return RT_EOK;
+}
+
+static rt_ssize_t dev_test_write(rt_device_t dev,rt_off_t pos,const void *buffer,rt_size_t size)
+{
+    LOG_I("test dev write pos = %d,size = %d",pos,size);
+    return RT_EOK;
+}
+static rt_err_t dev_test_control(rt_device_t dev,int cmd,void *args)
+{
+    LOG_I("test dev control cmd %d",cmd);
+    return RT_EOK;
+}
+int rt_drv_test_init(void)
+{
+    rt_device_t test_dev = rt_device_create(RT_Device_Class_Char,0);
+    if(!test_dev)
+    {
+        LOG_E("test dev create failed");
+        return -RT_ERROR;
+    }
+
+    test_dev->init = dev_test_init;
+    test_dev->open = dev_test_open;
+    test_dev->close = dev_test_close;
+    test_dev->read = dev_test_read;
+    test_dev->write = dev_test_write;
+    test_dev->control = dev_test_control;
+
+    if(rt_device_register(test_dev,"test_dev",RT_DEVICE_FLAG_RDWR) != RT_EOK)
+    {
+        LOG_E("test dev register failed");
+        return -RT_ERROR;
+    }
+
+    return RT_EOK;
+}
+INIT_BOARD_EXPORT(rt_drv_test_init);
+#endif