README
======
This directory holds the port to the NXP S32K344EVB-Q257 development board.
Contents
========
o Status
o Serial Console
o LEDs and Buttons
o OpenSDA Notes
o Configurations
Status
======
2021-07-05: Configuration created.
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 PTA15 (LPUART6_RX)
OpenSDA UART TX PTA16 (LPUART6_TX)
USB drivers for the PEmicro CDC Serial Port are available here:
http://www.pemicro.com/opensda/
LEDs and Buttons
================
LEDs
----
The S32K344EVB has two RGB LEDs:
RedLED0 PTA29 (EMIOS1 CH12 / EMIOS2 CH12)
GreenLED0 PTA30 (EMIOS1 CH13 / EMIOS2 CH13)
BlueLED0 PTA31 (EMIOS1 CH14 / FXIO D0)
RedLED1 PTB18 (EMIOS1 CH15 / EMIOS2 CH14 / FXIO D1)
GreenLED1 PTB25 (EMIOS1 CH21 / EMIOS2 CH21 / FXIO D6)
BlueLED1 PTE12 (EMIOS1 CH5 / FXIO D8)
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 s32k344evb.h):
GPIO_LED0_R
GPIO_LED0_G
GPIO_LED0_B
GPIO_LED1_R
GPIO_LED1_G
GPIO_LED1_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 S32K344EVB. 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 S32K344 in sleep mode (no change)
==========================================+========+========+=========
Buttons
-------
The S32K344EVB supports two buttons:
SW0 PTB26 (EIRQ13 / WKPU41)
SW1 PTB19 (WKPU38)
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.
Configurations
==============
Common Information
------------------
Each S32K344EVB configuration is maintained in a sub-directory and can be
selected as follows:
tools/configure.sh s32k344evb:<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 LPUART1 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 the
only application selected is the "Hello, World!" example.
