configs/stm32f746g-disco: Add stm32f746g-disco Ethernet configuration. Add USART1 support (connected to the USB virtual serial port)

configs/stm32f746g-disco/README.txt

@@ -515,9 +515,18 @@ Configurations
 Configuration Directories
 -------------------------
 
-  nsh:
+  nsh
   ---
     Configures the NuttShell (NSH) located at apps/examples/nsh.  The
     Configuration enables the serial interfaces on UART6.  Support for
-    builtin applications is enabled, but in the base configuration no
-    builtin applications are selected.
+    built-in applications is enabled, but in the base configuration no
+    built-in applications are selected.
+
+  nsh-ethernet
+  ------------
+    This configuration is similar to the nsh but a lot more hardware
+    peripherals are enabled, in particular Ethernet, as well as networking
+    support.  It is similar to the stm32f769i-disco/nsh-ethernet
+    configuration. This configuration uses USART1 for the serial console.
+    USART1 is connected to the ST-link virtual com inside board.h to remove
+    the need of a extra serial connection to use this board.

configs/stm32f746g-disco/include/board.h

@@ -332,6 +332,22 @@
 #define GPIO_USART6_RX GPIO_USART6_RX_1
 #define GPIO_USART6_TX GPIO_USART6_TX_1
 
+/* USART1:
+ *
+ * USART1 is connected to the "Virtual Com Port" lines of the ST-LINK controller.
+ *
+ *   -------- ---------------
+ *               STM32F7
+ *   SIGNAME  FUNCTION  GPIO
+ *   -- ----- --------- -----
+ *   VCP_RX   USART1_RX PB7
+ *   VCP_TX   USART1_TX PA9
+ *   -- ----- --------- -----
+ */
+
+#define GPIO_USART1_RX GPIO_USART1_RX_2
+#define GPIO_USART1_TX GPIO_USART1_TX_1
+
 /* The STM32 F7 connects to a SMSC LAN8742A PHY using these pins:
  *
  *   STM32 F7 BOARD        LAN8742A

configs/stm32f746g-disco/nsh-ethernet/defconfig

@@ -0,0 +1,82 @@
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="stm32f746g-disco"
+CONFIG_ARCH_BOARD_STM32F746G_DISCO=y
+CONFIG_ARCH_BUTTONS=y
+CONFIG_ARCH_CHIP_STM32F746NG=y
+CONFIG_ARCH_CHIP_STM32F7=y
+# CONFIG_ARCH_FPU is not set
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARMV7M_DCACHE_WRITETHROUGH=y
+CONFIG_ARMV7M_DCACHE=y
+CONFIG_ARMV7M_DTCM=y
+CONFIG_ARMV7M_ICACHE=y
+CONFIG_BOARD_LOOPSPERMSEC=43103
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DISABLE_POLL=y
+CONFIG_ETH0_PHY_LAN8742A=y
+CONFIG_EXAMPLES_NSH_CXXINITIALIZE=y
+CONFIG_EXAMPLES_NSH=y
+CONFIG_FS_PROCFS_REGISTER=y
+CONFIG_FS_PROCFS=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_HAVE_CXX=y
+CONFIG_INTELHEX_BINARY=y
+CONFIG_MAX_TASKS=16
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_MM_REGIONS=3
+CONFIG_NET_ARP_IPIN=y
+CONFIG_NET_ARP_SEND=y
+CONFIG_NET_BROADCAST=y
+CONFIG_NETDB_DNSCLIENT=y
+CONFIG_NET_ETH_MTU=1500
+CONFIG_NET_HOSTNAME="stntest"
+CONFIG_NET_ICMP=y
+CONFIG_NET_IGMP=y
+CONFIG_NET_ROUTE=y
+CONFIG_NET_SOCKOPTS=y
+CONFIG_NET_SOLINGER=y
+CONFIG_NET_TCP=y
+CONFIG_NET_UDP_CHECKSUMS=y
+CONFIG_NET_UDP=y
+CONFIG_NETUTILS_DHCPC=y
+CONFIG_NETUTILS_DISCOVER=y
+CONFIG_NET=y
+CONFIG_NFILE_DESCRIPTORS=8
+CONFIG_NFILE_STREAMS=8
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_DHCPC=y
+CONFIG_NSH_DISABLE_IFUPDOWN=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_NETMASK=0xfffffe00
+CONFIG_NSH_NOMAC=y
+CONFIG_NSH_READLINE=y
+CONFIG_PIPES=y
+CONFIG_PREALLOC_MQ_MSGS=4
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_PTHREAD_MUTEX_TYPES=y
+CONFIG_RAM_SIZE=245760
+CONFIG_RAM_START=0x20010000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=20
+CONFIG_SCHED_ATEXIT=y
+CONFIG_SCHED_HPWORK=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_START_DAY=14
+CONFIG_STM32F7_ETHMAC=y
+CONFIG_STM32F7_PHYADDR=0
+CONFIG_STM32F7_PHYSR_100FD=0x0018
+CONFIG_STM32F7_PHYSR_100HD=0x0008
+CONFIG_STM32F7_PHYSR_10FD=0x0014
+CONFIG_STM32F7_PHYSR_10HD=0x0004
+CONFIG_STM32F7_PHYSR=31
+CONFIG_STM32F7_PHYSR_ALTCONFIG=y
+CONFIG_STM32F7_PHYSR_ALTMODE=0x001c
+CONFIG_STM32F7_USART1=y
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_USART1_SERIAL_CONSOLE=y
+CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_WDOG_INTRESERVE=0