[platform] Enable Ethernet and FreeTROS+TCP for STM32F4

Author: rleh

README.md

@@ -228,7 +228,7 @@ Please [discover modm's peripheral drivers for your specific device][discover].
 <td align="center">○</td>
 <td align="center">○</td>
 <td align="center">✕</td>
-<td align="center">○</td>
+<td align="center">✅</td>
 <td align="center">✅</td>
 <td align="center">✕</td>
 <td align="center">✕</td>

ext/aws/modm_lan8720a.cpp

@@ -153,11 +153,11 @@ struct ethernet
 	using DmaDescriptor_t = DmaDescriptor;
 
 	/* Ethernet Rx DMA Descriptor */
-	modm_aligned(32) modm_fastdata
+	modm_aligned(32)
 	static DmaDescriptor_t  DmaRxDescriptorTable[RX_BUFFER_NUMBER];
 
 	/* Ethernet Tx DMA Descriptor */
-	modm_aligned(32) modm_fastdata
+	modm_aligned(32)
 	static DmaDescriptor_t  DmaTxDescriptorTable[TX_BUFFER_NUMBER];
 
 	static DmaDescriptor_t *RxDescriptor;       /*!< Rx descriptor to Get        */

ext/aws/module.lb

@@ -23,7 +23,7 @@ This module implements TCP over Ethernet via the LAN8720A transceiver.
         device = options[":target"]
         if not device.has_driver("eth:stm32*"):
             return False
-        if device.identifier.family not in ["f7"]:
+        if device.identifier.family not in ["f7", "f4"]:
             return False
         module.depends(":platform:eth", ":driver:lan8720a")
         return True

src/modm/platform/eth/stm32/module.lb

@@ -21,7 +21,7 @@ def prepare(module, options):
     if not device.has_driver("eth:stm32*"):
         return False
     # FIXME the driver is for F7 only right now
-    if device.identifier["family"] not in ["f7"]:
+    if device.identifier["family"] not in ["f7", "f4"]:
         return False
 
     module.depends(":architecture:delay",