Reconfigured Shenzhou to use JTAG. Misc Kconfig changes

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5118 42af7a65-404d-4744-a932-0658087f49c3

49 files changed, 391 insertions, 21 deletions

diff --git a/nuttx/arch/Kconfig b/nuttx/arch/Kconfig
index 92890be96..13335441e 100644
--- a/nuttx/arch/Kconfig
+++ b/nuttx/arch/Kconfig
@@ -14,23 +14,27 @@ config ARCH_8051
 
 config ARCH_ARM
 	bool "ARM"
+	select ARCH_HAVE_INTERRUPTSTACK
 	---help---
 		The ARM architectures
 
 config ARCH_AVR
 	bool "AVR"
 	select ARCH_NOINTC
+	select ARCH_HAVE_INTERRUPTSTACK
 	---help---
 		Atmel 8-bit bit AVR and 32-bit AVR32 architectures
 
 config ARCH_HC
 	bool "Freescale HC"
 	select ARCH_NOINTC
+	select ARCH_HAVE_INTERRUPTSTACK
 	---help---
 		Freescale HC architectures (M9S12)
 
 config ARCH_MIPS
 	bool "MIPS"
+	select ARCH_HAVE_INTERRUPTSTACK
 	---help---
 		MIPS architectures (PIC32)
 
@@ -43,6 +47,7 @@ config ARCH_RGMP
 config ARCH_SH
 	bool "Renesas"
 	select ARCH_NOINTC
+	select ARCH_HAVE_INTERRUPTSTACK
 	---help---
 		Renesas architectures (SH and M16C).
 
@@ -140,6 +145,18 @@ config DRAM_SIZE
 		this may be SDRAM or SRAM or any other RAM technology that support
 		program execution.
 
+config ARCH_HAVE_INTERRUPTSTACK
+	bool
+
+config ARCH_INTERRUPTSTACK
+	bool "Use interrupt stack"
+	depends on ARCH_HAVE_INTERRUPTSTACK
+	default y
+	---help---
+		This architecture supports an interrupt stack. If defined, this symbol
+		is the size of the interrupt stack in bytes.  If not defined, the user
+		task stacks will be used during interrupt handling.
+
 comment "Boot options"
 
 choice
diff --git a/nuttx/arch/arm/Kconfig b/nuttx/arch/arm/Kconfig
index 6550950e7..3bd531232 100644
--- a/nuttx/arch/arm/Kconfig
+++ b/nuttx/arch/arm/Kconfig
@@ -216,14 +216,6 @@ config PAGING
 		If set =y in your configation file, this setting will enable the on-demand
 		paging feature as described in http://www.nuttx.org/NuttXDemandPaging.html.
 
-config ARCH_INTERRUPTSTACK
-	bool "Use interrupt stack"
-	default y
-	---help---
-		This architecture supports an interrupt stack. If defined, this symbol
-		is the size of the interrupt stack in bytes.  If not defined, the user
-		task stacks will be used during interrupt handling.
-
 config ARCH_IRQPRIO
 	bool "Interrupt priority"
 	default y		if ARCH_CORTEXM3 || ARCH_CORTEXM4
diff --git a/nuttx/arch/arm/src/c5471/Kconfig b/nuttx/arch/arm/src/c5471/Kconfig
index ae2bf3130..06363ad7d 100644
--- a/nuttx/arch/arm/src/c5471/Kconfig
+++ b/nuttx/arch/arm/src/c5471/Kconfig
@@ -2,3 +2,5 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+comment "C5471 Configuration Options"
diff --git a/nuttx/arch/arm/src/calypso/Kconfig b/nuttx/arch/arm/src/calypso/Kconfig
index ae2bf3130..65726a609 100644
--- a/nuttx/arch/arm/src/calypso/Kconfig
+++ b/nuttx/arch/arm/src/calypso/Kconfig
@@ -2,3 +2,5 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+comment "Calypso Configuration Options"
diff --git a/nuttx/arch/arm/src/dm320/Kconfig b/nuttx/arch/arm/src/dm320/Kconfig
index ae2bf3130..0255c5ff1 100644
--- a/nuttx/arch/arm/src/dm320/Kconfig
+++ b/nuttx/arch/arm/src/dm320/Kconfig
@@ -2,3 +2,5 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+comment "DM320 Configuration Options"
diff --git a/nuttx/arch/arm/src/imx/Kconfig b/nuttx/arch/arm/src/imx/Kconfig
index ae2bf3130..879f50ef7 100644
--- a/nuttx/arch/arm/src/imx/Kconfig
+++ b/nuttx/arch/arm/src/imx/Kconfig
@@ -2,3 +2,5 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+comment "i.MX Configuration Options"
diff --git a/nuttx/arch/arm/src/kinetis/Kconfig b/nuttx/arch/arm/src/kinetis/Kconfig
index ae2bf3130..210683f59 100644
--- a/nuttx/arch/arm/src/kinetis/Kconfig
+++ b/nuttx/arch/arm/src/kinetis/Kconfig
@@ -2,3 +2,5 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+comment "Kinetis Configuration Options"
diff --git a/nuttx/arch/arm/src/lm3s/Kconfig b/nuttx/arch/arm/src/lm3s/Kconfig
index 1fd203f4f..03da5c458 100644
--- a/nuttx/arch/arm/src/lm3s/Kconfig
+++ b/nuttx/arch/arm/src/lm3s/Kconfig
@@ -3,6 +3,8 @@
 # see misc/tools/kconfig-language.txt.
 #
 
+comment "LM3S Configuration Options"
+
 choice
 	prompt "LM3S Chip Selection"
 	default ARCH_CHIP_LM3S6965
diff --git a/nuttx/arch/arm/src/lpc17xx/Kconfig b/nuttx/arch/arm/src/lpc17xx/Kconfig
index dc28f8c10..2769fc231 100644
--- a/nuttx/arch/arm/src/lpc17xx/Kconfig
+++ b/nuttx/arch/arm/src/lpc17xx/Kconfig
@@ -3,6 +3,8 @@
 # see misc/tools/kconfig-language.txt.
 #
 
+comment "LPC17xx Configuration Options"
+
 choice
 	prompt "NXP LPC17XX Chip Selection"
 	default ARCH_CHIP_LPC1768
diff --git a/nuttx/arch/arm/src/lpc214x/Kconfig b/nuttx/arch/arm/src/lpc214x/Kconfig
index ae2bf3130..a26483ed9 100644
--- a/nuttx/arch/arm/src/lpc214x/Kconfig
+++ b/nuttx/arch/arm/src/lpc214x/Kconfig
@@ -2,3 +2,5 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+comment "LPC214x Configuration Options"
diff --git a/nuttx/arch/arm/src/lpc2378/Kconfig b/nuttx/arch/arm/src/lpc2378/Kconfig
index ae2bf3130..89a515d6a 100644
--- a/nuttx/arch/arm/src/lpc2378/Kconfig
+++ b/nuttx/arch/arm/src/lpc2378/Kconfig
@@ -2,3 +2,5 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+comment "LPC2378 Configuration Options"
diff --git a/nuttx/arch/arm/src/lpc31xx/Kconfig b/nuttx/arch/arm/src/lpc31xx/Kconfig
index 17daf94b7..39b19b95d 100644
--- a/nuttx/arch/arm/src/lpc31xx/Kconfig
+++ b/nuttx/arch/arm/src/lpc31xx/Kconfig
@@ -3,6 +3,8 @@
 # see misc/tools/kconfig-language.txt.
 #
 
+comment "LPC31xx Configuration Options"
+
 choice
 	prompt "LPC31 Chip Selection"
 	default ARCH_CHIP_LPC3131
diff --git a/nuttx/arch/arm/src/lpc43xx/Kconfig b/nuttx/arch/arm/src/lpc43xx/Kconfig
index 0ae9f8ffe..4653b2ee3 100644
--- a/nuttx/arch/arm/src/lpc43xx/Kconfig
+++ b/nuttx/arch/arm/src/lpc43xx/Kconfig
@@ -3,6 +3,8 @@
 # see misc/tools/kconfig-language.txt.
 #
 
+comment "LPC43xx Configuration Options"
+
 choice
 	prompt "LPC43XX Chip Selection"
 	default ARCH_CHIP_LPC4330FET100
diff --git a/nuttx/arch/arm/src/sam3u/Kconfig b/nuttx/arch/arm/src/sam3u/Kconfig
index ae2bf3130..b84565547 100644
--- a/nuttx/arch/arm/src/sam3u/Kconfig
+++ b/nuttx/arch/arm/src/sam3u/Kconfig
@@ -2,3 +2,5 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+comment "AT91SAM3U Configuration Options"
diff --git a/nuttx/arch/arm/src/stm32/Kconfig b/nuttx/arch/arm/src/stm32/Kconfig
index ef1ca63ce..80610f271 100644
--- a/nuttx/arch/arm/src/stm32/Kconfig
+++ b/nuttx/arch/arm/src/stm32/Kconfig
@@ -3,6 +3,8 @@
 # see misc/tools/kconfig-language.txt.
 #
 
+comment "STM32 Configuration Options"
+
 choice
 	prompt "STM32 Chip Selection"
 	default ARCH_CHIP_STM32F103ZET6
@@ -414,6 +416,8 @@ config STM32_CAN
 	bool
 	default y if STM32_CAN1 || STM32_CAN2
 
+menu "Alternate Pin Mapping"
+
 choice
 	prompt "TIM1 Alternate Pin Mappings"
 	depends on STM32_STM32F10XX && STM32_TIM1
@@ -537,6 +541,8 @@ config STM32_ETH_REMAP
 	default n
 	depends on STM32_CONNECTIVITYLINE && STM32_ETHMAC
 
+endmenu
+
 choice
 	prompt "JTAG Configuration"
 	default STM32_JTAG_DISABLE
diff --git a/nuttx/arch/arm/src/str71x/Kconfig b/nuttx/arch/arm/src/str71x/Kconfig
index ae2bf3130..0e9c87d54 100644
--- a/nuttx/arch/arm/src/str71x/Kconfig
+++ b/nuttx/arch/arm/src/str71x/Kconfig
@@ -2,3 +2,5 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+comment "STR71x Configuration Options"
diff --git a/nuttx/arch/avr/src/at32uc3/Kconfig b/nuttx/arch/avr/src/at32uc3/Kconfig
index 4c3bd28c6..fcb9f8405 100644
--- a/nuttx/arch/avr/src/at32uc3/Kconfig
+++ b/nuttx/arch/avr/src/at32uc3/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_AT32UC3
+comment "AT32U3 Configuration Options"
+
 endif
diff --git a/nuttx/arch/avr/src/at90usb/Kconfig b/nuttx/arch/avr/src/at90usb/Kconfig
index 78cd6d059..8f9978a52 100644
--- a/nuttx/arch/avr/src/at90usb/Kconfig
+++ b/nuttx/arch/avr/src/at90usb/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_AT90USB
+comment "AT90USB Configuration Options"
+
 endif
diff --git a/nuttx/arch/avr/src/atmega/Kconfig b/nuttx/arch/avr/src/atmega/Kconfig
index f0004d7fe..145b525df 100644
--- a/nuttx/arch/avr/src/atmega/Kconfig
+++ b/nuttx/arch/avr/src/atmega/Kconfig
@@ -4,5 +4,7 @@
 #
 
 if ARCH_ATMEGA
+comment "ATMega Configuration Options"
+
 endif
 
diff --git a/nuttx/arch/avr/src/avr/Kconfig b/nuttx/arch/avr/src/avr/Kconfig
index 1b21ce810..99228aa2c 100644
--- a/nuttx/arch/avr/src/avr/Kconfig
+++ b/nuttx/arch/avr/src/avr/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_FAMILY_AVR
+comment "AVR Configuration Options"
+
 endif
diff --git a/nuttx/arch/avr/src/avr32/Kconfig b/nuttx/arch/avr/src/avr32/Kconfig
index ca1fcd2bf..12cc033cb 100644
--- a/nuttx/arch/avr/src/avr32/Kconfig
+++ b/nuttx/arch/avr/src/avr32/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_FAMILY_AVR32
+comment "AVR32 Configuration Options"
+
 endif
diff --git a/nuttx/arch/hc/src/m9s12/Kconfig b/nuttx/arch/hc/src/m9s12/Kconfig
index 41c4b9c17..e4addf43f 100644
--- a/nuttx/arch/hc/src/m9s12/Kconfig
+++ b/nuttx/arch/hc/src/m9s12/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_HSC12
+comment "M9S12 Configuration Options"
+
 endif
diff --git a/nuttx/arch/mips/Kconfig b/nuttx/arch/mips/Kconfig
index cfa3d589d..c642f7152 100644
--- a/nuttx/arch/mips/Kconfig
+++ b/nuttx/arch/mips/Kconfig
@@ -27,14 +27,6 @@ config ARCH_CHIP
 	string
 	default "pic32mx"	if ARCH_CHIP_PIC32MX
 
-config ARCH_INTERRUPTSTACK
-	bool "Use interrupt stack"
-	default y
-	---help---
-		This architecture supports an interrupt stack. If defined, this symbol
-		is the size of the interrupt stack in bytes.  If not defined, the user
-		task stacks will be used during interrupt handling.
-
 config ARCH_IRQPRIO
 	bool "Interrupt priority"
 	default y		if ARCH_CHIP_PIC32MX
diff --git a/nuttx/arch/mips/src/mips32/Kconfig b/nuttx/arch/mips/src/mips32/Kconfig
index e02b0258b..1b4499568 100644
--- a/nuttx/arch/mips/src/mips32/Kconfig
+++ b/nuttx/arch/mips/src/mips32/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_MIPS32
+comment "MIPS32 Configuration Options"
+
 endif
diff --git a/nuttx/arch/mips/src/pic32mx/Kconfig b/nuttx/arch/mips/src/pic32mx/Kconfig
index 222c7e4de..ba77cf5d8 100644
--- a/nuttx/arch/mips/src/pic32mx/Kconfig
+++ b/nuttx/arch/mips/src/pic32mx/Kconfig
@@ -4,6 +4,7 @@
 #
 
 if ARCH_CHIP_PIC32MX
+comment "PIC32MX Configuration Options"
 
 choice
 	prompt "PIC32MX chip selection"
diff --git a/nuttx/arch/rgmp/Kconfig b/nuttx/arch/rgmp/Kconfig
index 7cc5fcc97..24a9c3205 100644
--- a/nuttx/arch/rgmp/Kconfig
+++ b/nuttx/arch/rgmp/Kconfig
@@ -4,6 +4,8 @@
 #
 
 if ARCH_RGMP
+comment "RGMP Configuration Options"
+
 choice
 	prompt "RGMP Architecture"
 	default RGMP_SUBARCH_X86
diff --git a/nuttx/arch/sh/src/m16c/Kconfig b/nuttx/arch/sh/src/m16c/Kconfig
index 9d510e037..56db601be 100644
--- a/nuttx/arch/sh/src/m16c/Kconfig
+++ b/nuttx/arch/sh/src/m16c/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_M16C
+comment "M16C Configuration Options"
+
 endif
diff --git a/nuttx/arch/sh/src/sh1/Kconfig b/nuttx/arch/sh/src/sh1/Kconfig
index b0405f2f5..3fe3ebb7d 100644
--- a/nuttx/arch/sh/src/sh1/Kconfig
+++ b/nuttx/arch/sh/src/sh1/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_SH1
+comment "SH-1 Configuration Options"
+
 endif
diff --git a/nuttx/arch/sim/Kconfig b/nuttx/arch/sim/Kconfig
index 33f25f6a6..331f61c79 100644
--- a/nuttx/arch/sim/Kconfig
+++ b/nuttx/arch/sim/Kconfig
@@ -4,6 +4,8 @@
 #
 
 if ARCH_SIM
+comment "Simulation Configuration Options"
+
 config SIM_M32
 	bool "Build 32-bit simulation on 64-bit machine"
 	default n
diff --git a/nuttx/arch/x86/Kconfig b/nuttx/arch/x86/Kconfig
index c988c92a4..10c081fab 100644
--- a/nuttx/arch/x86/Kconfig
+++ b/nuttx/arch/x86/Kconfig
@@ -4,6 +4,8 @@
 #
 
 if ARCH_X86
+comment "x86 Configuration Options"
+
 choice
 	prompt "x86 chip selection"
 	default ARCH_I486
diff --git a/nuttx/arch/x86/src/common/Kconfig b/nuttx/arch/x86/src/common/Kconfig
index fff9d7f12..9595e6e8a 100644
--- a/nuttx/arch/x86/src/common/Kconfig
+++ b/nuttx/arch/x86/src/common/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_X86
+comment "Common Configuration Options"
+
 endif
diff --git a/nuttx/arch/x86/src/i486/Kconfig b/nuttx/arch/x86/src/i486/Kconfig
index be9fa2cd0..1847a4dd4 100644
--- a/nuttx/arch/x86/src/i486/Kconfig
+++ b/nuttx/arch/x86/src/i486/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_I486
+comment "i486 Configuration Options"
+
 endif
diff --git a/nuttx/arch/x86/src/qemu/Kconfig b/nuttx/arch/x86/src/qemu/Kconfig
index ac2e2a5e9..5623ab063 100644
--- a/nuttx/arch/x86/src/qemu/Kconfig
+++ b/nuttx/arch/x86/src/qemu/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_CHIP_QEMU
+comment "QEMU Configuration Options"
+
 endif
diff --git a/nuttx/arch/z16/Kconfig b/nuttx/arch/z16/Kconfig
index acf58bcf3..a806e6ed1 100644
--- a/nuttx/arch/z16/Kconfig
+++ b/nuttx/arch/z16/Kconfig
@@ -4,6 +4,7 @@
 #
 
 if ARCH_Z16
+comment "Z16 Configuration Options"
 
 choice
 	prompt "ZNEO chip selection"
diff --git a/nuttx/arch/z16/src/common/Kconfig b/nuttx/arch/z16/src/common/Kconfig
index 0f94fb19a..d01f3df2d 100644
--- a/nuttx/arch/z16/src/common/Kconfig
+++ b/nuttx/arch/z16/src/common/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_Z16
+comment "Common Configuration Options"
+
 endif
diff --git a/nuttx/arch/z16/src/z16f/Kconfig b/nuttx/arch/z16/src/z16f/Kconfig
index f410f51c4..826720ee7 100644
--- a/nuttx/arch/z16/src/z16f/Kconfig
+++ b/nuttx/arch/z16/src/z16f/Kconfig
@@ -4,4 +4,6 @@
 #
 
 if ARCH_CHIP_Z16F
+comment "Z16F Configuration Options"
+
 endif
diff --git a/nuttx/configs/ea3131/tools/usb-driver.txt b/nuttx/configs/ea3131/tools/usb-driver.txt
new file mode 100644
index 000000000..2a649dfb8
--- /dev/null
+++ b/nuttx/configs/ea3131/tools/usb-driver.txt
@@ -0,0 +1,16 @@
+https://www.olimex.com/dev/pdf/ARM/JTAG/Repair%20Procedure%20for%20OpenOcd-Rev.%20G%20drivers.pdf
+
+Repair procedure for ARM-USB-OCD drivers
+
+1. Uninstalling ARM-USB-OCD drivers.
+1.1. Connect your programmer/debugger to your computer, open Device Manager and uninstall the drivers for ARM-USB-OCD.
+1.2. After you have uninstalled ARM-USB-TINY driver from Device Manager, disconnect the programmer from your computer.
+1.3. Now you should download FTClean.exe from here: http://www.ftdichip.com/Support/Utilities/FTClean.zip.
+1.4. After download is complete extract the “*.zip” file, open folder FTClean,  and run FTClean.exe
+1.5. Ror VID (Hex) select “Other”. And after that fill the first box with 15ba and “PID (Hex)” with 0004.
+1.6. Press “Clean System” button.  Make sure that all FTDI devices are disconnected. (My require administrator privileges).
+
+2. Re-install ARM-USB-OCD driver
+2.1 Connect the programmer/debugger to the computer.
+2.2 When prompted, browse to the C:\gccfd\DRIVERS\ARM-USB-OCD-DRIVER directory and install.
+
diff --git a/nuttx/configs/ea3152/tools/usb-driver.txt b/nuttx/configs/ea3152/tools/usb-driver.txt
new file mode 100644
index 000000000..2a649dfb8
--- /dev/null
+++ b/nuttx/configs/ea3152/tools/usb-driver.txt
@@ -0,0 +1,16 @@
+https://www.olimex.com/dev/pdf/ARM/JTAG/Repair%20Procedure%20for%20OpenOcd-Rev.%20G%20drivers.pdf
+
+Repair procedure for ARM-USB-OCD drivers
+
+1. Uninstalling ARM-USB-OCD drivers.
+1.1. Connect your programmer/debugger to your computer, open Device Manager and uninstall the drivers for ARM-USB-OCD.
+1.2. After you have uninstalled ARM-USB-TINY driver from Device Manager, disconnect the programmer from your computer.
+1.3. Now you should download FTClean.exe from here: http://www.ftdichip.com/Support/Utilities/FTClean.zip.
+1.4. After download is complete extract the “*.zip” file, open folder FTClean,  and run FTClean.exe
+1.5. Ror VID (Hex) select “Other”. And after that fill the first box with 15ba and “PID (Hex)” with 0004.
+1.6. Press “Clean System” button.  Make sure that all FTDI devices are disconnected. (My require administrator privileges).
+
+2. Re-install ARM-USB-OCD driver
+2.1 Connect the programmer/debugger to the computer.
+2.2 When prompted, browse to the C:\gccfd\DRIVERS\ARM-USB-OCD-DRIVER directory and install.
+
diff --git a/nuttx/configs/nucleus2g/tools/usb-driver.txt b/nuttx/configs/nucleus2g/tools/usb-driver.txt
new file mode 100644
index 000000000..2a649dfb8
--- /dev/null
+++ b/nuttx/configs/nucleus2g/tools/usb-driver.txt
@@ -0,0 +1,16 @@
+https://www.olimex.com/dev/pdf/ARM/JTAG/Repair%20Procedure%20for%20OpenOcd-Rev.%20G%20drivers.pdf
+
+Repair procedure for ARM-USB-OCD drivers
+
+1. Uninstalling ARM-USB-OCD drivers.
+1.1. Connect your programmer/debugger to your computer, open Device Manager and uninstall the drivers for ARM-USB-OCD.
+1.2. After you have uninstalled ARM-USB-TINY driver from Device Manager, disconnect the programmer from your computer.
+1.3. Now you should download FTClean.exe from here: http://www.ftdichip.com/Support/Utilities/FTClean.zip.
+1.4. After download is complete extract the “*.zip” file, open folder FTClean,  and run FTClean.exe
+1.5. Ror VID (Hex) select “Other”. And after that fill the first box with 15ba and “PID (Hex)” with 0004.
+1.6. Press “Clean System” button.  Make sure that all FTDI devices are disconnected. (My require administrator privileges).
+
+2. Re-install ARM-USB-OCD driver
+2.1 Connect the programmer/debugger to the computer.
+2.2 When prompted, browse to the C:\gccfd\DRIVERS\ARM-USB-OCD-DRIVER directory and install.
+
diff --git a/nuttx/configs/olimex-lpc1766stk/tools/usb-driver.txt b/nuttx/configs/olimex-lpc1766stk/tools/usb-driver.txt
new file mode 100644
index 000000000..2a649dfb8
--- /dev/null
+++ b/nuttx/configs/olimex-lpc1766stk/tools/usb-driver.txt
@@ -0,0 +1,16 @@
+https://www.olimex.com/dev/pdf/ARM/JTAG/Repair%20Procedure%20for%20OpenOcd-Rev.%20G%20drivers.pdf
+
+Repair procedure for ARM-USB-OCD drivers
+
+1. Uninstalling ARM-USB-OCD drivers.
+1.1. Connect your programmer/debugger to your computer, open Device Manager and uninstall the drivers for ARM-USB-OCD.
+1.2. After you have uninstalled ARM-USB-TINY driver from Device Manager, disconnect the programmer from your computer.
+1.3. Now you should download FTClean.exe from here: http://www.ftdichip.com/Support/Utilities/FTClean.zip.
+1.4. After download is complete extract the “*.zip” file, open folder FTClean,  and run FTClean.exe
+1.5. Ror VID (Hex) select “Other”. And after that fill the first box with 15ba and “PID (Hex)” with 0004.
+1.6. Press “Clean System” button.  Make sure that all FTDI devices are disconnected. (My require administrator privileges).
+
+2. Re-install ARM-USB-OCD driver
+2.1 Connect the programmer/debugger to the computer.
+2.2 When prompted, browse to the C:\gccfd\DRIVERS\ARM-USB-OCD-DRIVER directory and install.
+
diff --git a/nuttx/configs/olimex-strp711/scripts/usb-driver.txt b/nuttx/configs/olimex-strp711/scripts/usb-driver.txt
new file mode 100644
index 000000000..2a649dfb8
--- /dev/null
+++ b/nuttx/configs/olimex-strp711/scripts/usb-driver.txt
@@ -0,0 +1,16 @@
+https://www.olimex.com/dev/pdf/ARM/JTAG/Repair%20Procedure%20for%20OpenOcd-Rev.%20G%20drivers.pdf
+
+Repair procedure for ARM-USB-OCD drivers
+
+1. Uninstalling ARM-USB-OCD drivers.
+1.1. Connect your programmer/debugger to your computer, open Device Manager and uninstall the drivers for ARM-USB-OCD.
+1.2. After you have uninstalled ARM-USB-TINY driver from Device Manager, disconnect the programmer from your computer.
+1.3. Now you should download FTClean.exe from here: http://www.ftdichip.com/Support/Utilities/FTClean.zip.
+1.4. After download is complete extract the “*.zip” file, open folder FTClean,  and run FTClean.exe
+1.5. Ror VID (Hex) select “Other”. And after that fill the first box with 15ba and “PID (Hex)” with 0004.
+1.6. Press “Clean System” button.  Make sure that all FTDI devices are disconnected. (My require administrator privileges).
+
+2. Re-install ARM-USB-OCD driver
+2.1 Connect the programmer/debugger to the computer.
+2.2 When prompted, browse to the C:\gccfd\DRIVERS\ARM-USB-OCD-DRIVER directory and install.
+
diff --git a/nuttx/configs/shenzhou/nsh/defconfig b/nuttx/configs/shenzhou/nsh/defconfig
index 907871104..2030b232b 100644
--- a/nuttx/configs/shenzhou/nsh/defconfig
+++ b/nuttx/configs/shenzhou/nsh/defconfig
@@ -70,12 +70,15 @@ CONFIG_ARCH_FAMILY="armv7-m"
 CONFIG_ARCH_CHIP="stm32"
 CONFIG_ARCH_HAVE_MPU=y
 # CONFIG_ARMV7M_MPU is not set
-# CONFIG_ARCH_INTERRUPTSTACK is not set
 CONFIG_ARCH_IRQPRIO=y
 CONFIG_BOARD_LOOPSPERMSEC=5483
 # CONFIG_ARCH_CALIBRATION is not set
 # CONFIG_SERIAL_TERMIOS is not set
 # CONFIG_NET_MULTICAST is not set
+
+#
+# STM32 Configuration Options
+#
 # CONFIG_ARCH_CHIP_STM32F103ZET6 is not set
 # CONFIG_ARCH_CHIP_STM32F103RET6 is not set
 # CONFIG_ARCH_CHIP_STM32F103VCT6 is not set
@@ -100,7 +103,7 @@ CONFIG_STM32_CODESOURCERYW=y
 # CONFIG_STM32_DEVKITARM is not set
 # CONFIG_STM32_RAISONANCE is not set
 # CONFIG_STM32_BUILDROOT is not set
-CONFIG_STM32_DFU=y
+# CONFIG_STM32_DFU is not set
 
 #
 # STM32 Peripheral Support
@@ -139,6 +142,10 @@ CONFIG_STM32_USART2=y
 # CONFIG_STM32_USB is not set
 # CONFIG_STM32_WWDG is not set
 CONFIG_STM32_SPI=y
+
+#
+# Alternate Pin Mapping
+#
 CONFIG_STM32_USART2_REMAP=y
 # CONFIG_STM32_SPI1_REMAP is not set
 CONFIG_STM32_ETH_REMAP=y
@@ -184,6 +191,8 @@ CONFIG_ARCH_STACKDUMP=y
 #
 CONFIG_DRAM_START=0x20000000
 CONFIG_DRAM_SIZE=65536
+CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
+# CONFIG_ARCH_INTERRUPTSTACK is not set
 
 #
 # Boot options
diff --git a/nuttx/configs/shenzhou/nsh/setenv.sh b/nuttx/configs/shenzhou/nsh/setenv.sh
index 1ba336393..d57d6f003 100755
--- a/nuttx/configs/shenzhou/nsh/setenv.sh
+++ b/nuttx/configs/shenzhou/nsh/setenv.sh
@@ -69,7 +69,10 @@ export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++
 # toolchain.
 #export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
 
-# Add the path to the toolchain to the PATH varialble
-export PATH="${TOOLCHAIN_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
+# This is the path to the tools/ subdirectory
+export TOOLS_DIR="${WD}/configs/shenzhou/tools"
+
+# Add the path to the toolchain to the PATH variable
+export PATH="${TOOLCHAIN_BIN}:${TOOLS_DIR}:/sbin:/usr/sbin:${PATH_ORIG}"
 
 echo "PATH : ${PATH}"
diff --git a/nuttx/configs/shenzhou/tools/olimex-arm-usb-ocd.cfg b/nuttx/configs/shenzhou/tools/olimex-arm-usb-ocd.cfg
new file mode 100644
index 000000000..9752dd418
--- /dev/null
+++ b/nuttx/configs/shenzhou/tools/olimex-arm-usb-ocd.cfg
@@ -0,0 +1,13 @@
+#
+# Olimex ARM-USB-OCD
+#
+# http://www.olimex.com/dev/arm-usb-ocd.html
+#
+
+interface ft2232
+ft2232_device_desc "Olimex OpenOCD JTAG"
+ft2232_layout olimex-jtag
+ft2232_vid_pid 0x15ba 0x0003
+
+#jtag_khz 600
+
diff --git a/nuttx/configs/shenzhou/tools/oocd.sh b/nuttx/configs/shenzhou/tools/oocd.sh
new file mode 100755
index 000000000..259156e31
--- /dev/null
+++ b/nuttx/configs/shenzhou/tools/oocd.sh
@@ -0,0 +1,92 @@
+#!/bin/sh
+
+# Get command line parameters
+
+USAGE="USAGE: $0 [-dh] <TOPDIR>"
+ADVICE="Try '$0 -h' for more information"
+
+unset DEBUG
+
+while [ ! -z "$1" ]; do
+	case $1 in
+	-d )
+		set -x
+		DEBUG=-d3
+		;;
+	-h )
+		echo "$0 is a tool for generation of proper version files for the NuttX build"
+		echo ""
+		echo $USAGE
+		echo ""
+		echo "Where:"
+		echo "  -d"
+		echo "	  Enable script debug"
+		echo "  -h"
+		echo "	  show this help message and exit"
+		echo "	  Use the OpenOCD 0.4.0"
+		echo "  <TOPDIR>"
+		echo "	  The full path to the top-level NuttX directory"
+		exit 0
+		;;
+	* )
+		break;
+		;;
+	esac
+	shift
+done
+
+TOPDIR=$1
+if [ -z "${TOPDIR}" ]; then
+	echo "Missing argument"
+	echo $USAGE
+	echo $ADVICE
+	exit 1
+fi
+
+# This script *probably* only works with the following versions of OpenOCD:
+
+# Local search directory and configurations
+
+OPENOCD_SEARCHDIR="${TOPDIR}/configs/shenzhou/tools"
+OPENOCD_WSEARCHDIR="`cygpath -w ${OPENOCD_SEARCHDIR}`"
+
+OPENOCD_PATH="/cygdrive/c/Program Files (x86)/OpenOCD/0.4.0/bin"
+OPENOCD_EXE=openocd.exe
+OPENOCD_INTERFACE="olimex-arm-usb-ocd.cfg"
+
+
+OPENOCD_TARGET="stm32.cfg"
+OPENOCD_ARGS="${DEBUG} -s ${OPENOCD_WSEARCHDIR} -f ${OPENOCD_INTERFACE} -f ${OPENOCD_TARGET}"
+
+echo "Trying OpenOCD 0.4.0 path: ${OPENOCD_PATH}/${OPENOCD_EXE}"
+
+# Verify that everything is what it claims it is and is located where it claims it is.
+
+if [ ! -x "${OPENOCD_PATH}/${OPENOCD_EXE}" ]; then
+	echo "OpenOCD executable does not exist: ${OPENOCD_PATH}/${OPENOCD_EXE}"
+	exit 1
+fi
+if [ ! -f "${OPENOCD_SEARCHDIR}/${OPENOCD_TARGET}" ]; then
+	echo "OpenOCD target config file does not exist: ${OPENOCD_SEARCHDIR}/${OPENOCD_TARGET}"
+	exit 1
+fi
+if [ ! -f "${OPENOCD_SEARCHDIR}/${OPENOCD_INTERFACE}" ]; then
+	echo "OpenOCD interface config file does not exist: ${OPENOCD_SEARCHDIR}/${OPENOCD_INTERFACE}"
+	exit 1
+fi
+
+# Enable debug if so requested
+
+if [ "X$2" = "X-d" ]; then
+	OPENOCD_ARGS=$OPENOCD_ARGS" -d3"
+	set -x
+fi
+
+# Okay... do it!
+
+echo "Starting OpenOCD"
+"${OPENOCD_PATH}/${OPENOCD_EXE}" ${OPENOCD_ARGS} &
+echo "OpenOCD daemon started"
+ps -ef | grep openocd
+echo "In GDB: target remote localhost:3333"
+
diff --git a/nuttx/configs/shenzhou/tools/stm32.cfg b/nuttx/configs/shenzhou/tools/stm32.cfg
new file mode 100644
index 000000000..463a85cfd
--- /dev/null
+++ b/nuttx/configs/shenzhou/tools/stm32.cfg
@@ -0,0 +1,69 @@
+# script for stm32
+
+if { [info exists CHIPNAME] } {
+   set  _CHIPNAME $CHIPNAME
+} else {
+   set  _CHIPNAME stm32
+}
+
+if { [info exists ENDIAN] } {
+   set  _ENDIAN $ENDIAN
+} else {
+   set  _ENDIAN little
+}
+
+# Work-area is a space in RAM used for flash programming
+# By default use 16kB
+if { [info exists WORKAREASIZE] } {
+   set  _WORKAREASIZE $WORKAREASIZE
+} else {
+   set  _WORKAREASIZE 0x4000
+}
+
+# JTAG speed should be <= F_CPU/6. F_CPU after reset is 8MHz, so use F_JTAG = 1MHz
+jtag_khz 1000
+
+jtag_nsrst_delay 100
+jtag_ntrst_delay 100
+
+#jtag scan chain
+if { [info exists CPUTAPID ] } {
+   set _CPUTAPID $CPUTAPID
+} else {
+  # See STM Document RM0008
+  # Section 26.6.3
+   set _CPUTAPID 0x3ba00477
+}
+jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
+
+if { [info exists BSTAPID ] } {
+   # FIXME this never gets used to override defaults...
+   set _BSTAPID $BSTAPID
+} else {
+  # See STM Document RM0008
+  # Section 29.6.2
+  # Low density devices, Rev A
+  set _BSTAPID1 0x06412041
+  # Medium density devices, Rev A
+  set _BSTAPID2 0x06410041
+  # Medium density devices, Rev B and Rev Z
+  set _BSTAPID3 0x16410041
+  # High density devices, Rev A
+  set _BSTAPID4 0x06414041
+  # Connectivity line devices, Rev A and Rev Z
+  set _BSTAPID5 0x06418041
+}
+jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID1 \
+	-expected-id $_BSTAPID2 -expected-id $_BSTAPID3 \
+	-expected-id $_BSTAPID4 -expected-id $_BSTAPID5
+
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME cortex_m3 -endian $_ENDIAN -chain-position $_TARGETNAME
+
+$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
+
+set _FLASHNAME $_CHIPNAME.flash
+flash bank $_FLASHNAME stm32x 0 0 0 0 $_TARGETNAME
+
+# For more information about the configuration files, take a look at:
+# openocd.texi
diff --git a/nuttx/configs/shenzhou/tools/usb-driver.txt b/nuttx/configs/shenzhou/tools/usb-driver.txt
new file mode 100644
index 000000000..2a649dfb8
--- /dev/null
+++ b/nuttx/configs/shenzhou/tools/usb-driver.txt
@@ -0,0 +1,16 @@
+https://www.olimex.com/dev/pdf/ARM/JTAG/Repair%20Procedure%20for%20OpenOcd-Rev.%20G%20drivers.pdf
+
+Repair procedure for ARM-USB-OCD drivers
+
+1. Uninstalling ARM-USB-OCD drivers.
+1.1. Connect your programmer/debugger to your computer, open Device Manager and uninstall the drivers for ARM-USB-OCD.
+1.2. After you have uninstalled ARM-USB-TINY driver from Device Manager, disconnect the programmer from your computer.
+1.3. Now you should download FTClean.exe from here: http://www.ftdichip.com/Support/Utilities/FTClean.zip.
+1.4. After download is complete extract the “*.zip” file, open folder FTClean,  and run FTClean.exe
+1.5. Ror VID (Hex) select “Other”. And after that fill the first box with 15ba and “PID (Hex)” with 0004.
+1.6. Press “Clean System” button.  Make sure that all FTDI devices are disconnected. (My require administrator privileges).
+
+2. Re-install ARM-USB-OCD driver
+2.1 Connect the programmer/debugger to the computer.
+2.2 When prompted, browse to the C:\gccfd\DRIVERS\ARM-USB-OCD-DRIVER directory and install.
+
diff --git a/nuttx/configs/stm3210e-eval/tools/usb-driver.txt b/nuttx/configs/stm3210e-eval/tools/usb-driver.txt
new file mode 100644
index 000000000..2a649dfb8
--- /dev/null
+++ b/nuttx/configs/stm3210e-eval/tools/usb-driver.txt
@@ -0,0 +1,16 @@
+https://www.olimex.com/dev/pdf/ARM/JTAG/Repair%20Procedure%20for%20OpenOcd-Rev.%20G%20drivers.pdf
+
+Repair procedure for ARM-USB-OCD drivers
+
+1. Uninstalling ARM-USB-OCD drivers.
+1.1. Connect your programmer/debugger to your computer, open Device Manager and uninstall the drivers for ARM-USB-OCD.
+1.2. After you have uninstalled ARM-USB-TINY driver from Device Manager, disconnect the programmer from your computer.
+1.3. Now you should download FTClean.exe from here: http://www.ftdichip.com/Support/Utilities/FTClean.zip.
+1.4. After download is complete extract the “*.zip” file, open folder FTClean,  and run FTClean.exe
+1.5. Ror VID (Hex) select “Other”. And after that fill the first box with 15ba and “PID (Hex)” with 0004.
+1.6. Press “Clean System” button.  Make sure that all FTDI devices are disconnected. (My require administrator privileges).
+
+2. Re-install ARM-USB-OCD driver
+2.1 Connect the programmer/debugger to the computer.
+2.2 When prompted, browse to the C:\gccfd\DRIVERS\ARM-USB-OCD-DRIVER directory and install.
+
diff --git a/nuttx/net/recvfrom.c b/nuttx/net/recvfrom.c
index 8bb658f48..51027e0f8 100644
--- a/nuttx/net/recvfrom.c
+++ b/nuttx/net/recvfrom.c
@@ -596,7 +596,10 @@ static uint16_t recvfrom_tcpinterrupt(struct uip_driver_s *dev, void *conn,
           pstate->rf_cb->priv    = NULL;
           pstate->rf_cb->event   = NULL;
 
-          /* Report an error only if no data has been received */
+          /* Report an error only if no data has been received. (If 
+           * CONFIG_NET_TCP_RECVDELAY then rf_recvlen should always be
+           * zero).
+           */
 
 #if CONFIG_NET_TCP_RECVDELAY > 0
           if (pstate->rf_recvlen == 0)