Import Mbed OS hard-float snapshot

targets/TARGET_STM/TARGET_STM32WB/spi_api.c

@@ -0,0 +1,59 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2019 STMicroelectronics
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mbed_assert.h"
+#include "spi_api.h"
+
+#if DEVICE_SPI
+
+#include "cmsis.h"
+#include "pinmap.h"
+#include "mbed_error.h"
+#include "PeripheralPins.h"
+
+#if DEVICE_SPI_ASYNCH
+#define SPI_S(obj)    (( struct spi_s *)(&(obj->spi)))
+#else
+#define SPI_S(obj)    (( struct spi_s *)(obj))
+#endif
+
+/*
+ * Only the frequency is managed in the family specific part
+ * the rest of SPI management is common to all STM32 families
+ */
+int spi_get_clock_freq(spi_t *obj)
+{
+    struct spi_s *spiobj = SPI_S(obj);
+    int spi_hz = 0;
+
+    /* Get source clock depending on SPI instance */
+    switch ((int)spiobj->spi) {
+        case SPI_1:
+            spi_hz = HAL_RCC_GetPCLK2Freq();
+            break;
+        case SPI_2:
+            spi_hz = HAL_RCC_GetPCLK1Freq();
+            break;
+        default:
+            error("CLK: SPI instance not set");
+            break;
+    }
+
+    return spi_hz;
+}
+
+#endif