board/stm32f401rc-rs485: Add support to RNDIS

Signed-off-by: Rodrigo Sim <rcsim10@gmail.com>

Documentation/platforms/arm/stm32f4/boards/stm32f401rc-rs485/index.rst

@@ -494,3 +494,33 @@ NSH commands::
          qe_main:   4. 2
          qe_main:   5. 2
          Terminating!
+
+rndis
+-----
+
+Configures the NuttShell (nsh), enables a serial console on USART6 and enables RNDIS over USB.
+NSH commands::
+
+       nsh> ping -h
+
+       Usage: ping [-c <count>] [-i <interval>] [-W <timeout>] [-s <size>] <hostname>
+       ping -h
+
+       Where:
+       <hostname> is either an IPv4 address or the name of the remote host
+       that is requested the ICMPv4 ECHO reply.
+       -c <count> determines the number of pings.  Default 10.
+       -i <interval> is the default delay between pings (milliseconds).
+       Default 1000.
+       -W <timeout> is the timeout for wait response (milliseconds).
+       Default 1000.
+       -s <size> specifies the number of data bytes to be sent.  Default 56.
+       -h shows this text and exits.
+       
+       nsh> ping 10.42.0.1
+       PING 10.42.0.1 56 bytes of data
+       56 bytes from 10.42.0.1: icmp_seq=0 time=0.0 ms
+       56 bytes from 10.42.0.1: icmp_seq=1 time=0.0 ms
+       ...
+       10 packets transmitted, 10 received, 0% packet loss, time 10100 ms
+       rtt min/avg/max/mdev = 0.000/0.000/0.000/0.000 ms

boards/arm/stm32/stm32f401rc-rs485/configs/rndis/defconfig

@@ -0,0 +1,89 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_ARCH_FPU is not set
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="stm32f401rc-rs485"
+CONFIG_ARCH_BOARD_STM32F401RC_RS485=y
+CONFIG_ARCH_BUTTONS=y
+CONFIG_ARCH_CHIP="stm32"
+CONFIG_ARCH_CHIP_STM32=y
+CONFIG_ARCH_CHIP_STM32F401RC=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_IRQBUTTONS=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARDCTL_USBDEVCTRL=y
+CONFIG_BOARD_LOOPSPERMSEC=8499
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_FULLOPT=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_EXAMPLES_BUTTONS=y
+CONFIG_EXAMPLES_BUTTONS_NAME0="SW3"
+CONFIG_EXAMPLES_BUTTONS_NAME1="SW4"
+CONFIG_EXAMPLES_BUTTONS_NAME2="SW5"
+CONFIG_EXAMPLES_BUTTONS_NAMES=y
+CONFIG_EXAMPLES_BUTTONS_QTD=3
+CONFIG_FS_PROCFS=y
+CONFIG_FS_TMPFS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INPUT=y
+CONFIG_INPUT_BUTTONS=y
+CONFIG_INPUT_BUTTONS_LOWER=y
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_MEMFD_ERROR=y
+CONFIG_NET=y
+CONFIG_NETDB_DNSCLIENT=y
+CONFIG_NETDB_DNSSERVER_IPv4ADDR=0x0
+CONFIG_NETDEV_LATEINIT=y
+CONFIG_NETINIT_DHCPC=y
+CONFIG_NETINIT_DRIPADDR=0x0
+CONFIG_NETINIT_NETMASK=0x0
+CONFIG_NETINIT_NOMAC=y
+CONFIG_NETINIT_THREAD=y
+CONFIG_NETUTILS_DHCPC=y
+CONFIG_NETUTILS_TELNETD=y
+CONFIG_NETUTILS_WEBCLIENT=y
+CONFIG_NET_ARP_SEND=y
+CONFIG_NET_BROADCAST=y
+CONFIG_NET_ICMP=y
+CONFIG_NET_ICMP_SOCKET=y
+CONFIG_NET_LOOPBACK=y
+CONFIG_NET_STATISTICS=y
+CONFIG_NET_TCP=y
+CONFIG_NET_TCP_WRITE_BUFFERS=y
+CONFIG_NET_UDP=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_DISABLE_IFUPDOWN=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_RAM_SIZE=98304
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RNDIS=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_LPWORK=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SPI=y
+CONFIG_START_DAY=5
+CONFIG_START_MONTH=5
+CONFIG_START_YEAR=2014
+CONFIG_STM32_JTAG_SW_ENABLE=y
+CONFIG_STM32_OTGFS=y
+CONFIG_STM32_PWR=y
+CONFIG_STM32_USART6=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_SYSTEM_PING=y
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_USART6_SERIAL_CONSOLE=y
+CONFIG_USBDEV=y

boards/arm/stm32/stm32f401rc-rs485/src/stm32_bringup.c

@@ -55,6 +55,10 @@
 #include "board_qencoder.h"
 #endif
 
+#ifdef CONFIG_RNDIS
+#  include <nuttx/usb/rndis.h>
+#endif
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -218,5 +222,16 @@ int stm32_bringup(void)
     }
 #endif
 
+#if defined(CONFIG_RNDIS) && !defined(CONFIG_RNDIS_COMPOSITE)
+  uint8_t mac[6];
+  mac[0] = 0xa0; /* TODO */
+  mac[1] = (CONFIG_NETINIT_MACADDR_2 >> (8 * 0)) & 0xff;
+  mac[2] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 3)) & 0xff;
+  mac[3] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 2)) & 0xff;
+  mac[4] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 1)) & 0xff;
+  mac[5] = (CONFIG_NETINIT_MACADDR_1 >> (8 * 0)) & 0xff;
+  usbdev_rndis_initialize(mac);
+#endif
+
   return ret;
 }