142 lines
4.5 KiB
Plaintext
142 lines
4.5 KiB
Plaintext
README
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======
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This directory hold the port to the NXP S32K118EVB-Q064 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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2019-08-14: Configuration created but entirely untested.
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2019-08-17: The port is code complete. It compiles with no errors or
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warnings but is untested. Still waiting for hardware.
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2019-08-20: The very first image that I wrote to FLASH seems to
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have "bricked" the board. The board is sensitive to (1) resetting
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into a bad state and (2) incorrect flash configurations. It is
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difficult to impossiblel to recover from these start-up errors.
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2019-80-22: My S32K118EVB is still borked, but after some additional
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changes, Fabio Balzano has verified that the NSH is functional on
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that board.
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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 PTB1(LPUART0_TX)
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OpenSDA UART RX PTB0(LPUART0_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 S32K118EVB has one RGB LED:
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RedLED PTD16 (FTM0 CH1)
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GreenLED PTD15 (FTM0 CH0)
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BlueLED PTE8 (FTM0 CH6)
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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 S32K118EVB. 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 S32K118EVB in sleep mode (no change)
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==========================================+========+========+=========
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Buttons
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-------
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The S32K118EVB supports two buttons:
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SW2 PTD3
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SW3 PTD5
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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 SWD connector J14
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near the touch electrodes and not the OpenSDA connector near the OpenSDA
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USB connector J7.
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Configurations
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==============
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Common Information
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------------------
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Each S32K118EVB configuration is maintained in a sub-directory and
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can be selected as follow:
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tools/configure.sh s32k118evb:<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 LPUART0 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 no
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builtin applications are selected.
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NOTE: This is a very minimal NSH configuration in order to reduce
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memory usage. Most of the NSH niceties are not available.
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