FRDM-K32L2B3

Overview

The FRDM-K32L2B3 FRDM development board provides a platform for evaluation and development of the K32 L2B SoC Family. The board provides easy Access to K32 L2B SoC I/O.

Hardware

K32L2B31VLH0A SoC running at up to 48 MHz, 256 kB flash memory, 32 kB SRAM memory.
Full-speed USB port with micro A/B connector for device functionality.
NXP FXOS8700CQ digital sensor, 3D accelerometer (±2g/±4g/±8g) + 3D magnetometer.
On-board segment LCD.
Form factor compatible with Arduino® Rev3 pin layout.
OpenSDA debug interface.

For more information about the K32L2B31VLH0A SoC and FRDM-K32L2B3 board:

Supported Features

The frdm_k32l2b3 board supports the hardware features listed below.

on-chip / on-board: Feature integrated in the SoC / present on the board.
2 / 2: Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.
vnd,foo: Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

`frdm_k32l2b3/k32l2b31a` target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M0+ CPU1	`arm,cortex-m0+`
ADC	on-chip	Kinetis ADC161	`nxp,kinetis-adc16`
Clock control	on-chip	NXP Kinetis Multipurpose Clock generator (MCG) IP node1	`nxp,kinetis-mcg`
	on-chip	Kinetis System Integration Module (SIM) IP node1	`nxp,kinetis-sim`
	on-chip	Generic fixed factor clock provider2	`fixed-factor-clock`
	on-chip	NXP MCXC oscillator1	`nxp,mcxc-osc`
Counter	on-chip	NXP LPTMR1	`nxp,lptmr`
	on-chip	NXP Periodic Interrupt Timer (PIT)1	`nxp,pit`
	on-chip	Child node for the Periodic Interrupt Timer node, intended for an individual timer channel2	`nxp,pit-channel`
Flash controller	on-chip	NXP Kinetis Flash Memory Module A (FTFA)1	`nxp,kinetis-ftfa`
GPIO & Headers	on-chip	Kinetis GPIO5	`nxp,kinetis-gpio`
I2C	on-chip	Kinetis I2C1 1	`nxp,kinetis-i2c`
Input	on-board	Group of GPIO-bound input keys1	`gpio-keys`
Interrupt controller	on-chip	ARMv6-M NVIC (Nested Vectored Interrupt Controller) controller1	`arm,v6m-nvic`
LED	on-board	Group of GPIO-controlled LEDs1	`gpio-leds`
MTD	on-chip	Flash node1	`soc-nv-flash`
Pin control	on-chip	NXP PORT Pin Controller5	`nxp,port-pinmux`
Pin control	on-chip	NXP PORT Pin Controller1	`nxp,port-pinctrl`
PWM	on-chip	MCUX Timer/PWM Module (TPM)3	`nxp,kinetis-tpm`
RTC	on-chip	NXP Real Time Clock (RTC)1	`nxp,rtc`
Sensors	on-board	FXOS8700 6-axis accelerometer/magnetometer sensor1	`nxp,fxos8700`
Sensors	on-chip	NXP Kinetis temperature sensor1	`nxp,kinetis-temperature`
Serial controller	on-chip	NXP LPUART1 1	`nxp,lpuart`
Serial controller	on-chip	Kinetis UART1	`nxp,kinetis-uart`
SRAM	on-chip	Generic on-chip SRAM1	`mmio-sram`
Timer	on-chip	ARMv6-M System Tick1	`arm,armv6m-systick`
USB	on-chip	NPX Kinetis USBFSOTG Controller in device mode1	`nxp,kinetis-usbd`

Connections and IOs

The K32L2B31VLH0A SoC has five pairs of pinmux/gpio controllers, and all are currently enabled (PORTA/GPIOA, PORTB/GPIOB, PORTC/GPIOC, PORTD/GPIOD, and PORTE/GPIOE) for the FRDM-K32L2B3 board.

Name	Function	Usage
PTD5	GPIO	Green LED
PTE31	GPIO	Red LED
PTA4	GPIO	User Button 1 (SW1)
PTC3	GPIO	User Button 2 (SW2)
PTA1	LPUART0_RX	UART Console
PTA2	LPUART0_TX	UART Console
PTE24	I2C0_SCL	I2C Accelerometer
PTE25	I2C0_SDA	I2C Accelerometer

System Clock

The K32L2B31VLH0A SoC is configured to use the 32.768 kHz external oscillator on the board to generate a 48 MHz system clock.

Serial Port

The K32L2B31VLH0A LPUART0 is used for the console.

Programming and Debugging

The frdm_k32l2b3 board supports the runners and associated west commands listed below.

	flash	debug	attach	debugserver	rtt
linkserver	✅ (default)	✅ (default)	✅	✅
pyocd	✅	✅	✅	✅	✅

Build and flash applications as usual (see Building an Application and Run an Application for more details).

Configuring a Debug Probe

A debug probe is used for both flashing and debugging the board. This board is configured by default to use the OpenSDA DAPLink Onboard Debug Probe.

For more information about OpenSDA and firmware applications check OpenSDA FRDM-K32L2B3.

Using LinkServer

Install the LinkServer Debug Host Tools and make sure they are in your search path. LinkServer works with the CMSIS-DAP firmware. Please follow the instructions on OpenSDA DAPLink Onboard Debug Probe and select the latest revision of the firmware image.

LinkServer is the default for this board, west flash and west debug will call the linkserver runner.

west flash
west debug

Using pyOCD

Install the pyOCD Debug Host Tools and make sure they are in your search path. pyOCD works with the CMSIS-DAP firmware.

Add the arguments -DBOARD_FLASH_RUNNER=pyocd and -DBOARD_DEBUG_RUNNER=pyocd when you invoke west build to override the default runner from linkserver to pyocd:

# From the root of the zephyr repository
west build -b frdm_k32l2b3 samples/hello_world -- -DBOARD_FLASH_RUNNER=pyocd -DBOARD_DEBUG_RUNNER=pyocd

Configuring a Console

Regardless of your choice in debug probe, we will use the OpenSDA microcontroller as a usb-to-serial adapter for the serial console.

Connect a USB cable from your PC to J13.

Use the following settings with your serial terminal of choice (minicom, putty, etc.):

Speed: 115200
Data: 8 bits
Parity: None
Stop bits: 1

Flashing

Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b frdm_k32l2b3 samples/hello_world
west flash

Open a serial terminal, reset the board (press the SW2 button), and you should see the following message in the terminal:

*** Booting Zephyr OS build v4.1.0-7032-g3198db1b1229 ***
Hello World! frdm_k32l2b3/k32l2b31a

Debugging