NXP S32K148EVB

NXP S32K148EVB-Q176 is an evaluation board for the NXP S32K148 MCU based on an Arm Cortex-M4F core.

Features

  • NXP FS32K148UAT0VLUT MCU

    • 112 MHz Clock (Max.)

    • 2048 Kb Flash

    • 256 Kb SRAM

    • 4 Kb EEPROM

  • NXP UJA1132HWF5V4 System Basis Chip

  • Connectivity:

    • OpenSDA UART (Console @ 115,200 baud)

    • CAN 2.0 (Transceiver part of UJA1132 SBC)

    • I/O headers with GPIO, I2C, SPI, etc.

Serial Console

By default, the serial console will be provided on the OpenSDA VCOM port:

OpenSDA UART RX

PTC6

LPUART1_RX

OpenSDA UART TX

PTC7

LPUART1_TX

USB drivers for the PEmicro CDC Serial Port are available here: http://www.pemicro.com/opensda/

LEDs and Buttons

Leds

The S32K148EVB has one RGB LED:

RedLED

PTE21

FTM4 CH1

GreenLED

PTE22

FTM4 CH2

BlueLED

PTE23

FTM4 CH3

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 s32k148evb.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 S32K148EVB. The following definitions describe how NuttX controls the LEDs:

State

Description

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

LED_SIGNAL

In a signal handler

LED_ASSERTION

An assertion failed

LED_PANIC

The system has crashed

FLASH

OFF

OFF

LED_IDLE

S32K148 in sleep mode

Buttons

The S32K148EVB supports two buttons:

SW3

PTC12

SW4

PTC13

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

Each S32K148EVB configuration is maintained in a sub-directory and can be selected as follows:

tools/configure.sh s32k148evb:<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:

    1. Build and install the kconfig-mconf tool. See nuttx/README.txt. Also see additional README.txt files in the NuttX tools repository.

    2. 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.

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.