diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/make.mk | 12 | ||||
| -rw-r--r-- | examples/readme.md | 27 |
2 files changed, 36 insertions, 3 deletions
diff --git a/examples/make.mk b/examples/make.mk index f2a8b979e..78581f813 100644 --- a/examples/make.mk +++ b/examples/make.mk @@ -75,7 +75,17 @@ else CFLAGS += -Os endif -# TUSB Logging option +# Log level is mapped to TUSB DEBUG option ifneq ($(LOG),) CFLAGS += -DCFG_TUSB_DEBUG=$(LOG) endif + +# Logger: default is UART, can be set to RTT +ifeq ($(LOGGER),rtt) + RTT_SRC = lib/SEGGER_RTT + + CFLAGS += -DLOGGER_RTT + INC += $(TOP)/$(RTT_SRC)/RTT + SRC_C += $(RTT_SRC)/RTT/SEGGER_RTT_printf.c + SRC_C += $(RTT_SRC)/RTT/SEGGER_RTT.c +endif diff --git a/examples/readme.md b/examples/readme.md index b661d169f..45746cc75 100644 --- a/examples/readme.md +++ b/examples/readme.md @@ -32,12 +32,36 @@ Then compile with `make BOARD=[your_board] all`, for example $ make BOARD=feather_nrf52840_express all ``` +### Debug Log + +### Log Level + +Should you have an issue running example and/or submitting an bug report. You could enable TinyUSB built-in debug logging with optional `LOG=`. LOG=1 will only print out error message, LOG=2 print more information with on-going events. LOG=3 or higher is not used yet. + +``` +$ make LOG=2 BOARD=feather_nrf52840_express all +``` + +### Logger + +By default log message is printed via on-board UART which is slow and take lots of CPU time comparing to USB speed. If your board support on-board/external JLink debugger, it would be more efficient to use it with RTT protocol for logging. To do that add option `LOGGER=rtt` to build command e.g + +``` +$ make LOG=2 LOGGER=rtt BOARD=feather_nrf52840_express all +``` + ## Flash -`flash` target will use the on-board debugger (jlink/cmsisdap/stlink/dfu) to flash the binary. We should install those debugger/programmer software in advance. Furthermore, since external jlink can be used with most of the board, there is also `flash-jlink` target for your convenience. +`flash` target will use the default on-board debugger (jlink/cmsisdap/stlink/dfu) to flash the binary, please install those support software in advance. Some board use bootloader/DFU via serial which is required to pass to make command ``` $ make BOARD=feather_nrf52840_express flash +$ make SERIAL=/dev/ttyACM0 BOARD=feather_nrf52840_express flash +``` + +Since jlink can be used with most of the boards, there is also `flash-jlink` target for your convenience. + +``` $ make BOARD=feather_nrf52840_express flash-jlink ``` @@ -46,4 +70,3 @@ Some board use uf2 bootloader for drag & drop in to mass storage device, uf2 can ``` $ make BOARD=feather_nrf52840_express all uf2 ``` - |