MCUXpresso Platform Customization

DART-MX8M

Sections

Available Demos

• driver_examples/i2c/interrupt_b2b_transfer/slave
• driver_examples/i2c/interrupt_b2b_transfer/master
• driver_examples/i2c/polling_b2b_transfer/slave
• driver_examples/i2c/polling_b2b_transfer/master
• driver_examples/wdog
• driver_examples/gpio/led_output
• driver_examples/tmu/tmu_monitor_report
• driver_examples/pwm
• driver_examples/uart/auto_baudrate_detect
• driver_examples/uart/interrupt
• driver_examples/uart/interrupt_rb_transfer
• driver_examples/uart/polling
• driver_examples/uart/interrupt_transfer
• driver_examples/gpt/timer
• driver_examples/gpt/capture
• driver_examples/ecspi/ecspi_loopback
• driver_examples/qspi/polling_transfer
• driver_examples/rdc
• driver_examples/sema4/uboot
• rtos_examples/freertos_ecspi/ecspi_loopback
• rtos_examples/freertos_hello
• rtos_examples/freertos_queue
• rtos_examples/freertos_sem
• rtos_examples/freertos_generic
• rtos_examples/freertos_uart
• rtos_examples/freertos_tickless
• rtos_examples/freertos_mutex
• rtos_examples/freertos_event
• rtos_examples/freertos_swtimer
• rtos_examples/freertos_i2c
• cmsis_driver_examples/i2c/int_b2b_transfer/slave
• cmsis_driver_examples/i2c/int_b2b_transfer/master
• cmsis_driver_examples/uart/interrupt_transfer
• cmsis_driver_examples/ecspi/int_loopback_transfer
• multicore_examples/rpmsg_lite_str_echo_rtos
• multicore_examples/rpmsg_lite_pingpong_rtos/linux_remote
• demo_apps/hello_world

Memory types

The SDK allow linking using 2 different memory types: DDR, TCM.

Here is available a short summary of memory areas used by Cortex-M4 as described in related linker file.

memory type	M4 memory area	A53 memory area	memory lentgh	linker file
DDR	0x80000000-0x801FFFFF (code) 0x80200000-0x803FFFFF (data) 0x80400000-0x80FFFFFF (data2)	0x80000000-0x801FFFFF (code) 0x80200000-0x803FFFFF (data) 0x80400000-0x80FFFFFF (data2)	16MB (DDR)	MIMX8MQ6xxxJZ_cm4_ddr_ram.ld
TCM	0x1FFE0000-0x1FFFFFFF (code) 0x20000000-0x2001FFFF (data) 0x80000000-0x80FFFFFF (data2)	0x007E0000-0x007FFFFF (code) 0x00800000-0x0081FFFF (data) 0x80000000-0x80FFFFFF (data2)	256kB (TCM) + 16MB (DDR)	MIMX8MQ6xxxJZ_cm4_ram.ld

All linker files are locate in the armgcc folder of each demo.

After launching the build_all.sh command the following folder will be created in the armgcc folder

• ddr_debug: containing DDR binaries compiled in debug mode (stripped: no symbols available)
• ddr_release: containing DDR binaries compiled in release mode (not stripped: symbols available)
• debug: containing TCM binaries compiled in debug mode (stripped: no symbols available)
• release: containing TCM binaries compiled in release mode (not stripped: symbols available)

Further details about memory mapping are available in i.MX 8M Applications Processors Reference Manual paragraphs:

• 2.1.2 Cortex-A53 Memory Map (pag 496)
• 2.1.3 Cortex-M4 Memory Map (pag 498)

JTAG

The VAR-DT8MCustomBoard exports the DART-MX8M JTAG signals through J29, a standard 1.27" 10 pin header.

Here the pinout

pin	signal	description	pin	signal	description
1	JTAG_VREF	JTAG IO reference voltage, connects to SOM_NVCC_3V3.	2	JTAG_TMS	JTAG Mode Select signal
3	GND	Digital Ground	4	JTAG_TCK	JTAG Clock signal, requires 10K pull down.
5	GND	Digital Ground	6	JTAG_TDO	JTAG Data Out signal
7	GND	Digital Ground	8	JTAG_TDI	JTAG Data In signal
9	JTAG_NTRST_C	JTAG Reset signal	10	NRST_CON	Programmer Reset, used to put the SOC in reset state.

Please refer to board schematics for further details.

Releases

mcuxpresso-2.5.1-mx8mq-v1.0

• HARDWARE_NAME = DART-MX8M
• RELEASE_NAME = mcuxpresso-2.5.1-mx8mq-v1.0
• RELEASE_LINK = MCUXPRESSO_2.5.1_V1.0_DART-MX8M
• RELEASE_NOTES_LINK = https://docs.google.com/spreadsheets/d/e/2PACX-1vSKd7IE5JQ_DWCDgnEmH-Mg_8A2k1YJmia0u8jvyytR14lMYCQ-rIkZprdoxQhry_cy73ZbWYPIpqHu/pubhtml
• MCUXPRESSO_VERSION = 2.5.1
• SDK_PATH = ~/var-mcuxpresso
• SDK_GIT_URL = https://github.com/varigit/freertos-variscite
• SDK_GIT_BRANCH = mcuxpresso_sdk_2.5.x-var01
• TOOLCHAIN_URL = https://developer.arm.com/-/media/Files/downloads/gnu-rm/7-2018q2/gcc-arm-none-eabi-7-2018-q2-update-linux.tar.bz2
• TOOLCHAIN_BZ2_NAME = gcc-arm-none-eabi-7-2018-q2-update-linux.tar.bz2
• TOOLCHAIN_FOLDER = gcc-arm-none-eabi-7-2018-q2-update
• BOARD_FOLDER = boards/dart_mx8mq
• DOCS_FOLDER = docs
• DEMOS_SECTION = DART-MX8M_DEMOS_SECTION
• MEMORY_TYPES_SECTION = DART-MX8M_MEMORY-TYPES_SECTION
• JTAG_SECTION = DART-MX8M_JTAG_SECTION
• NXP_USER_GUIDE = Getting Started with MCUXpresso SDK i.MX 8M Devices.pdf
• NXP_REFERENCE_KIT = EVK-MIMX8MQ

DART-MX8M-MINI

Releases

mcuxpresso-2.5.0-mx8mm-v1.0

• HARDWARE_NAME = DART-MX8M-MINI
• RELEASE_NAME = mcuxpresso-2.5.0-mx8mm-v1.0
• RELEASE_LINK = MCUXPRESSO_2.5.0_V1.0_DART-MX8M-MINI
• RELEASE_NOTES_LINK = https://docs.google.com/spreadsheets/d/e/2PACX-1vSKd7IE5JQ_DWCDgnEmH-Mg_8A2k1YJmia0u8jvyytR14lMYCQ-rIkZprdoxQhry_cy73ZbWYPIpqHu/pubhtml
• MCUXPRESSO_VERSION = 2.5.0
• SDK_PATH = ~/var-mcuxpresso
• SDK_GIT_URL = https://github.com/varigit/freertos-variscite
• SDK_GIT_BRANCH = mcuxpresso_sdk_2.5.x-var01
• TOOLCHAIN_URL = https://developer.arm.com/-/media/Files/downloads/gnu-rm/7-2018q2/gcc-arm-none-eabi-7-2018-q2-update-linux.tar.bz2
• TOOLCHAIN_BZ2_NAME = gcc-arm-none-eabi-7-2018-q2-update-linux.tar.bz2
• TOOLCHAIN_FOLDER = gcc-arm-none-eabi-7-2018-q2-update
• BOARD_FOLDER = boards/dart_mx8mm
• DOCS_FOLDER = docs
• DEMOS_SECTION = DART-MX8M-MINI_DEMOS_SECTION
• MEMORY_TYPES_SECTION = DART-MX8M-MINI_MEMORY-TYPES_SECTION
• JTAG_SECTION = DART-MX8M_JTAG_SECTION
• NXP_USER_GUIDE = Getting Started with MCUXpresso SDK for i.MX 8M Mini.pdf
• NXP_REFERENCE_KIT = EVK-MIMX8MM