Added support for SPI API

Author: AGlass0fMilk

targets/TARGET_STM/TARGET_STM32G4/objects.h

@@ -54,6 +54,20 @@ struct pwmout_s {
     uint8_t inverted;
 };
 
+struct spi_s {
+    SPI_HandleTypeDef handle;
+    IRQn_Type spiIRQ;
+    SPIName spi;
+    PinName pin_miso;
+    PinName pin_mosi;
+    PinName pin_sclk;
+    PinName pin_ssel;
+#if DEVICE_SPI_ASYNCH
+    uint32_t event;
+    uint8_t transfer_type;
+#endif
+};
+
 struct serial_s {
     UARTName uart;
     int index; // Used by irq

targets/TARGET_STM/TARGET_STM32G4/spi_device.h

@@ -0,0 +1,35 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2017, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#ifndef MBED_SPI_DEVICE_H
+#define MBED_SPI_DEVICE_H
+
+#include "stm32g4xx_ll_spi.h"
+
+#endif

targets/targets.json

@@ -15050,11 +15050,6 @@
         "device_has_add": [
             "MPU"
         ],
-        "device_has_remove": [
-            "SPI",
-            "SPISLAVE",
-            "SPI_ASYNCH"
-        ],
         "detect_code": [
             "0221"
         ],