diff options
Diffstat (limited to 'nuttx/configs/stm32f4discovery/README.txt')
| -rw-r--r-- | nuttx/configs/stm32f4discovery/README.txt | 58 |
1 files changed, 53 insertions, 5 deletions
diff --git a/nuttx/configs/stm32f4discovery/README.txt b/nuttx/configs/stm32f4discovery/README.txt index 378509be8..41207fafa 100644 --- a/nuttx/configs/stm32f4discovery/README.txt +++ b/nuttx/configs/stm32f4discovery/README.txt @@ -1258,7 +1258,36 @@ Where <subdir> is one of the following: times before NSH starts. The logic does this to prevent sending USB data before there is anything on the host side listening for USB serial input. - 9. USB OTG FS Host Support. The following changes will enable support for + 9. Here is an alternative USB console configuration. The following + configuration will also create a NSH USB console but this version + will use /dev/console. Instead, it will use the normal /dev/ttyACM0 + USB serial device for the console: + + CONFIG_STM32_OTGFS=y : STM32 OTG FS support + CONFIG_USART2_SERIAL_CONSOLE=y : Keep the USART2 console + CONFIG_DEV_CONSOLE=y : /dev/console exists (but NSH won't use it) + CONFIG_USBDEV=y : USB device support must be enabled + CONFIG_CDCACM=y : The CDC/ACM driver must be built + CONFIG_CDCACM_CONSOLE=n : Don't use the CDC/ACM USB console. + CONFIG_NSH_USBCONSOLE=y : Instead use some other USB device for the console + + The particular USB device that is used is: + + CONFIG_NSH_USBCONDEV="/dev/ttyACM0" + + The advantage of this configuration is only that it is easier to + bet working. This alternative does has some side effects: + + - When any other device other than /dev/console is used for a user + interface, linefeeds (\n) will not be expanded to carriage return / + linefeeds (\r\n). You will need to set your terminal program to account + for this. + + - /dev/console still exists and still refers to the serial port. So + you can still use certain kinds of debug output (see include/debug.h, all + of the interfaces based on lowsyslog will work in this configuration). + + 10. USB OTG FS Host Support. The following changes will enable support for a USB host on the STM32F4Discovery, including support for a mass storage class driver: @@ -1497,10 +1526,29 @@ Where <subdir> is one of the following: CONFIG_SYSLOG_CHAR=y : Use a character device for system logging CONFIG_SYSLOG_DEVPATH="/dev/ttyS0" : UART2 will be /dev/ttyS0 - Debug, however, is not enable so in the default configuration nothing - should appear on UART2 unless you enable some debug output. - - 4. By default, this project assumes that you are *NOT* using the DFU + However, there is nothing to generate SYLOG output in the default + configuration so nothing should appear on UART2 unless you enable + some debug output or enable the USB monitor. + + 4. Enabling USB monitor SYSLOG output. If tracing is enabled, the USB + device will save encoded trace output in in-memory buffer; if the + USB monitor is enabled, that trace buffer will be periodically + emptied and dumped to the system loggin device (UART2 in this + configuraion): + + CONFIG_USBDEV_TRACE=y : Enable USB trace feature + CONFIG_USBDEV_TRACE_NRECORDS=128 : Buffer 128 records in memory + CONFIG_SYSTEM_USBMONITOR=y : Start the USB monitor daemon + CONFIG_SYSTEM_USBMONITOR_STACKSIZE=2048 : USB monitor daemon stack size + CONFIG_SYSTEM_USBMONITOR_PRIORITY=50 : USB monitor daemon priority + + CONFIG_NSH_USBDEV_TRACEINIT=y : Enable TRACE output + CONFIG_NSH_USBDEV_TRACECLASS=y + CONFIG_NSH_USBDEV_TRACETRANSFERS=y + CONFIG_NSH_USBDEV_TRACECONTROLLER=y + CONFIG_NSH_USBDEV_TRACEINTERRUPTS=y + + 5. By default, this project assumes that you are *NOT* using the DFU bootloader. Using the Prolifics PL2303 Emulation |