[components][SPI][spi-bit-ops]修复可能的异常操作

* 移除初始化时未进行引脚初始化就进行引脚设置可能导致的异常
* CS引脚配置判断完善

Author: wdfk-prog

components/drivers/spi/spi-bit-ops.c

@@ -443,10 +443,17 @@ rt_ssize_t spi_bit_xfer(struct rt_spi_device *device, struct rt_spi_message *mes
 #endif
 
     /* take CS */
-    if (message->cs_take && (cs_pin != PIN_NONE))
+    if (message->cs_take && !(device->config.mode & RT_SPI_NO_CS) && (cs_pin != PIN_NONE))
     {
         LOG_I("spi take cs\n");
-        rt_pin_write(cs_pin, PIN_LOW);
+        if (device->config.mode & RT_SPI_CS_HIGH)
+        {
+            rt_pin_write(cs_pin, PIN_HIGH);
+        }
+        else
+        {
+            rt_pin_write(cs_pin, PIN_LOW);
+        }
         spi_delay(ops);
 
         /* spi phase */
@@ -497,10 +504,17 @@ rt_ssize_t spi_bit_xfer(struct rt_spi_device *device, struct rt_spi_message *mes
     }
 
     /* release CS */
-    if (message->cs_release && (cs_pin != PIN_NONE))
+    if (message->cs_take && !(device->config.mode & RT_SPI_NO_CS) && (cs_pin != PIN_NONE))
     {
         spi_delay(ops);
-        rt_pin_write(cs_pin, PIN_HIGH);
+        if (device->config.mode & RT_SPI_CS_HIGH)
+        {
+            rt_pin_write(cs_pin, PIN_LOW);
+        }
+        else
+        {
+            rt_pin_write(cs_pin, PIN_HIGH);
+        }
         LOG_I("spi release cs\n");
     }
 
@@ -522,9 +536,5 @@ rt_err_t rt_spi_bit_add_bus(struct rt_spi_bit_obj *obj,
     obj->config.max_hz     = 1 * 1000 * 1000;
     obj->config.mode       = RT_SPI_MASTER | RT_SPI_MSB | RT_SPI_MODE_0;
 
-    /* idle status */
-    if (obj->config.mode & RT_SPI_CPOL) SCLK_H(ops);
-    else                                SCLK_L(ops);
-
     return rt_spi_bus_register(&obj->bus, bus_name, &spi_bit_bus_ops);
 }