85 lines
2.3 KiB
Plaintext
85 lines
2.3 KiB
Plaintext
README
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^^^^^^
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README for NuttX port to the LC823450XGEVK board.
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The board information is available at
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http://www.onsemi.com/PowerSolutions/evalBoard.do?id=LC823450XGEVK
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LC823450 related documents are available at
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http://www.onsemi.com/PowerSolutions/supportDoc.do?type=AppNotes&rpn=LC823450
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This port is intended to test LC823450 features including SMP.
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Supported peripherals are UART, TIMER, RTC, GPIO, DMA, I2C, SPI, LCD.
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Settings
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^^^^^^^^
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1. Currently only SRAM boot via ICE is supported.
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2. If SWD connection is lost, please specify lower adaptor clock.
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3. Both CPUs are running at 160MHz.
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4. Internal SRAMs (seg0 to seg5) are used.
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5. Serial console can be used via external USB-UART (115200/8/N/1).
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6. Interrupt handlers except for inter-cpu are handled on CPU0.
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SMP related Status
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^^^^^^^^^^^^^^^^^^
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Currently SMP feature works on the board but might not be stable.
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In addition, console output might be corrupted if the both CPUs
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output into the console because UART operates in FIFO mode.
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1. "nsh> smp" works but the result will be corrupted.
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2. "nsh> ostest" works but might cause a deadlock or assertion.
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Other Status
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^^^^^^^^^^^^
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1. nsh built-in commands such as ps, free are available.
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NuttShell (NSH)
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nsh> ps
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PID GROUP CPU PRI POLICY TYPE NPX STATE EVENT SIGMASK STACK COMMAND
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0 0 0 0 FIFO Kthread N-- Assigned 00000000 000000 CPU0 IDLE
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1 0 1 0 FIFO Kthread N-- Running 00000000 002044 CPU1 IDLE
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3 1 0 100 FIFO Task --- Running 00000000 003052 init
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nsh> free
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total used free largest
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Mem: 1027024 13136 1013888 1013888
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2. date command can be used to get/set RTC date and time.
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nsh> date
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Oct 03 00:00:55 2013
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nsh> date -s "Mar 31 12:34:56 2017"
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nsh> date
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Mar 31 12:34:56 2017
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3. i2c app can be used to test I2C buses.
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nsh> i2c get -b 1 -a 18 -r 0
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READ Bus: 1 Addr: 18 Subaddr: 00 Value: f9
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4. nxhello app can be used to test LCD via SPI.
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nsh> nxhello
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nxhello_initialize: Initializing LCD
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nxhello_initialize: Open NX
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nxhello_main: NX handle=20096f0
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nxhello_main: Set background color=0
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nxhello_main: Screen resolution (128,48)
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nxhello_hello: Position (31,20)
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nxhello_main: Close NX
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TODO
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^^^^
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The following peripherals will be supported.
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eMMC, uSD, USB, ADC, Audio, etc.
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