README
======
This directory hold the port to the NXP S32K118EVB-Q064 Development board.
Contents
========
o Status
o Serial Console
o LEDs and Buttons
o OpenSDA Notes
o Configurations
Status
======
2019-08-14: Configuration created but entirely untested.
2019-08-17: The port is code complete. It compiles with no errors or
warnings but is untested. Still waiting for hardware.
2019-08-20: The very first image that I wrote to FLASH seems to
have "bricked" the board. The board is sensitive to (1) resetting
into a bad state and (2) incorrect flash configurations. It is
difficult to impossiblel to recover from these start-up errors.
2019-80-22: My S32K118EVB is still borked, but after some additional
changes, Fabio Balzano has verified that the NSH is functional on
that board.
TODO: Need calibrate the delay loop. The current value of
CONFIG_BOARD_LOOPSPERMSEC is a bogus value retained from a copy-paste
(see apps/examples/calib_udelay).
Serial Console
==============
By default, the serial console will be provided on the OpenSDA VCOM port:
OpenSDA UART TX PTB1(LPUART0_TX)
OpenSDA UART RX PTB0(LPUART0_RX)
USB drivers for the PEMIcro CDC Serial port are available here:
http://www.pemicro.com/opensda/
LEDs and Buttons
================
LEDs
----
The S32K118EVB has one RGB LED:
RedLED PTD16 (FTM0 CH1)
GreenLED PTD15 (FTM0 CH0)
BlueLED PTE8 (FTM0 CH6)
An output of '1' illuminates the LED.
If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in
any way. The following definitions are used to access individual RGB
components.
The RGB components could, alternatively be controlled through PWM using
the common RGB LED driver.
If CONFIG_ARCH_LEDs is defined, then NuttX will control the LEDs on board
the S32K118EVB. The following definitions describe how NuttX controls the
LEDs:
==========================================+========+========+=========
RED GREEN BLUE
==========================================+========+========+=========
LED_STARTED NuttX has been started OFF OFF OFF
LED_HEAPALLOCATE Heap has been allocated OFF OFF ON
LED_IRQSENABLED Interrupts enabled OFF OFF ON
LED_STACKCREATED Idle stack created OFF ON OFF
LED_INIRQ In an interrupt (no change)
LED_SIGNAL In a signal handler (no change)
LED_ASSERTION An assertion failed (no change)
LED_PANIC The system has crashed FLASH OFF OFF
LED_IDLE S32K118EVB in sleep mode (no change)
==========================================+========+========+=========
Buttons
-------
The S32K118EVB supports two buttons:
SW2 PTD3
SW3 PTD5
OpenSDA Notes
=============
- USB drivers for the PEMIcro CDC Serial port are available here:
http://www.pemicro.com/opensda/
- The drag'n'drog interface expects files in .srec format.
- Using Segger J-Link: Easy... but remember to use the SWD connector J14
near the touch electrodes and not the OpenSDA connector near the OpenSDA
USB connector J7.
Configurations
==============
Common Information
------------------
Each S32K118EVB configuration is maintained in a sub-directory and
can be selected as follow:
tools/configure.sh s32k118evb:<subdir>
Where <subdir> is one of the sub-directories listed in the next paragraph
NOTES (common for all configurations):
1. This configuration uses the mconf-based configuration tool. To
change this configuration using that tool, you should:
a. Build and install the kconfig-mconf tool. See nuttx/README.txt
see additional README.txt files in the NuttX tools repository.
b. Execute 'make menuconfig' in nuttx/ in order to start the
reconfiguration process.
2. Unless otherwise stated, the serial console used is LPUART0 at
115,200 8N1. This corresponds to the OpenSDA VCOM port.
Configuration Sub-directories
-------------------------
nsh:
---
Configures the NuttShell (nsh) located at apps/examples/nsh. Support
for builtin applications is enabled, but in the base configuration no
builtin applications are selected.
NOTE: This is a very minimal NSH configuration in order to reduce
memory usage. Most of the NSH niceties are not available.
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