Import Mbed OS hard-float snapshot

connectivity/drivers/802.15.4_RF/stm-s2lp-rf-driver/source/rf_configuration.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2018 ARM Limited. All rights reserved.
+ * 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.
+ */
+
+#ifndef RF_CONF_H_
+#define RF_CONF_H_
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define RSSI_OFFSET     146
+
+void rf_conf_calculate_datarate_registers(uint32_t datarate, uint16_t *datarate_mantissa, uint8_t *datarate_exponent);
+void rf_conf_calculate_base_frequency_registers(uint32_t frequency, uint8_t *synt3, uint8_t *synt2, uint8_t *synt1, uint8_t *synt0);
+void rf_conf_calculate_deviation_registers(uint32_t deviation, uint8_t *fdev_m, uint8_t *fdev_e);
+int rf_conf_calculate_channel_spacing_registers(uint32_t channel_spacing, uint8_t *ch_space);
+void rf_conf_calculate_rx_filter_bandwidth_registers(uint32_t rx_bandwidth, uint8_t *chflt_m, uint8_t *chflt_e);
+void rf_conf_calculate_rssi_threshold_registers(int16_t rssi_threshold, uint8_t *rssi_th);
+uint32_t rf_conf_calculate_deviation(phy_modulation_index_e modulation_index, uint32_t datarate);
+int16_t rf_conf_cca_threshold_percent_to_rssi(uint8_t percent);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* RF_CONF_H_ */