README
======
This directory holds 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
impossible to recover from these start-up errors.
2019-08-22: My S32K118EVB is still borked, but after some additional
changes, Fabio Balzano has verified that the NSH is functional on that
board.
2019-10-19: The aforementioned fixes for the FLASH issues were converted
into a set of FLASH configuration options, with a proven default state.
2020-06-15: Added FlexCAN driver with SocketCAN support to the S32K1XX
arch. Might work on the S32K118EVB as well, but remains untested.
2020-06-16: Added Emulated EEPROM driver and initialization.
TODO: Need to 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 RX PTB0 (LPUART0_RX)
OpenSDA UART TX PTB1 (LPUART0_TX)
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 (see s32k118evb.h):
GPIO_LED_R
GPIO_LED_G
GPIO_LED_B
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 S32K118 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 follows:
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.
Also 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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