128 lines
3.9 KiB
Plaintext
128 lines
3.9 KiB
Plaintext
README
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======
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This directory hold the port to the NXP S32K148EVB-Q176 Development board.
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Contents
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========
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o Status
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o Serial Console
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o LEDs and Buttons
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o OpenSDA Notes
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o Configurations
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Status
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======
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2019-08-20: NSH configuration created but entirely untested.
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2019-08-24: NSH configuration verified running from FLASH.
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TODO: Need calibrate the delay loop. The current value of
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CONFIG_BOARD_LOOPSPERMSEC is a bogus value retained from a copy-paste
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(see apps/examples/calib_udelay).
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Serial Console
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==============
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By default, the serial console will be provided on the OpenSDA VCOM port:
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OpenSDA UART TX PTC7 (LPUART1_TX)
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OpenSDA UART RX PTC6 (LPUART1_RX)
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USB drivers for the PEMIcro CDC Serial port are available here:
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http://www.pemicro.com/opensda/
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LEDs and Buttons
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================
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LEDs
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----
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The S32K148EVB has one RGB LED:
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RedLED PTE21
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GreenLED PTE22
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BlueLED PTE23
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An output of '1' illuminates the LED.
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If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in
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any way. The following definitions are used to access individual RGB
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components.
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The RGB components could, alternatively be controlled through PWM using
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the common RGB LED driver.
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If CONFIG_ARCH_LEDs is defined, then NuttX will control the LEDs on board
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the S32K148EVB. The following definitions describe how NuttX controls the
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LEDs:
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==========================================+========+========+=========
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RED GREEN BLUE
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==========================================+========+========+=========
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LED_STARTED NuttX has been started OFF OFF OFF
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LED_HEAPALLOCATE Heap has been allocated OFF OFF ON
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LED_IRQSENABLED Interrupts enabled OFF OFF ON
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LED_STACKCREATED Idle stack created OFF ON OFF
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LED_INIRQ In an interrupt (no change)
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LED_SIGNAL In a signal handler (no change)
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LED_ASSERTION An assertion failed (no change)
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LED_PANIC The system has crashed FLASH OFF OFF
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LED_IDLE S32K148EVB in sleep mode (no change)
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==========================================+========+========+=========
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Buttons
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-------
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The S32K148EVB supports two buttons:
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SW3 PTC12
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SW4 PTC13
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OpenSDA Notes
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=============
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- USB drivers for the PEMIcro CDC Serial port are available here:
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http://www.pemicro.com/opensda/
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- The drag'n'drog interface expects files in .srec format.
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- Using Segger J-Link: Easy... but remember to use the 20-pin SWD J10
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connector near the Ethernet connector and not J20 the 10-bit OpenSDA
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connector closer to the OpenSDA USB connector J24.
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Configurations
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==============
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Common Information
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------------------
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Each S32K148EVB configuration is maintained in a sub-directory and
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can be selected as follow:
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tools/configure.sh s32k148evb:<subdir>
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Where <subdir> is one of the sub-directories listed in the next paragraph
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NOTES (common for all configurations):
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1. This configuration uses the mconf-based configuration tool. To
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change this configuration using that tool, you should:
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a. Build and install the kconfig-mconf tool. See nuttx/README.txt
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see additional README.txt files in the NuttX tools repository.
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b. Execute 'make menuconfig' in nuttx/ in order to start the
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reconfiguration process.
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2. Unless otherwise stated, the serial console used is LPUART1 at
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115,200 8N1. This corresponds to the OpenSDA VCOM port.
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Configuration Sub-directories
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-----------------------------
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nsh:
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---
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Configures the NuttShell (nsh) located at apps/examples/nsh. Support
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for builtin applications is enabled, but in the base configuration but
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the builtin applications selected is the "Hello, World!" example.
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