STM32L4R9I Discovery
Overview
The 32L4R9IDISCOVERY Discovery kit is a complete demonstration and development platform for STMicroelectronics Arm® Cortex®-M4 core-based STM32L4R9AI microcontroller.
Leveraging the innovative ultra-low-power oriented features, 640 Kbytes of embedded RAM, graphics performance (Chrom-ART Accelerator), and DSI controller offered by the STM32L4R9AI, the 32L4R9IDISCOVERY Discovery kit enables users to easily prototype applications with state-of-the-art energy efficiency, as well as stunning audio and graphics rendering with direct support for AMOLED DSI round LCD display.
For even more user-friendliness, the on-board ST-LINK/V2-1 debugger provides out-of-the-box programming and debugging capabilities.
More information about the board can be found at the STM32L4R9I-DISCOVERY website. More information about STM32L4R9 can be found here:
Supported Features
The stm32l4r9i_disco 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.
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M4F CPU1 |
|
ADC |
on-chip |
||
CAN |
on-chip |
STM32 CAN controller1 |
|
Clock control |
on-chip |
STM32 RCC (Reset and Clock controller)1 |
|
on-chip |
STM32 HSE Clock1 |
||
on-chip |
Generic fixed-rate clock provider3 |
||
on-chip |
STM32 MSI Clock1 |
||
on-chip |
STM32 LSE Clock1 |
||
on-chip |
STM32L4/L5 main PLL1 |
||
on-chip |
STM32 Microcontroller Clock Output (MCO)1 |
||
Counter |
on-chip |
STM32 counters9 |
|
DAC |
on-chip |
STM32 family DAC1 |
|
Display |
on-chip |
STM32 LCD-TFT display controller1 |
|
DMA |
on-chip |
STM32 DMA controller (V2)2 |
|
on-chip |
STM32 DMAMUX controller1 |
||
Flash controller |
on-chip |
STM32 Family flash controller1 |
|
on-board |
STM32 OSPI Flash controller supporting the JEDEC CFI interface1 |
||
GPIO & Headers |
on-chip |
STM32 GPIO Controller9 |
|
on-board |
MFXSTM32L152 I2C-based GPIO expander1 |
||
on-board |
GPIO pins exposed on Arduino Uno (R3) headers1 |
||
I2C |
on-chip |
||
Input |
on-board |
Group of GPIO-bound input keys1 |
|
Interrupt controller |
on-chip |
ARMv7-M NVIC (Nested Vectored Interrupt Controller)1 |
|
on-chip |
STM32 External Interrupt Controller1 |
||
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
Memory controller |
on-chip |
STM32 Battery Backed RAM1 |
|
MMC |
on-chip |
STM32 SDMMC Disk Access1 |
|
MTD |
on-chip |
STM32 flash memory1 |
|
on-board |
Fixed partitions of a flash (or other non-volatile storage) memory1 |
||
OCTOSPI |
on-chip |
||
PHY |
on-chip |
This binding is to be used by all the usb transceivers which are built-in with USB IP1 |
|
Pin control |
on-chip |
STM32 Pin controller1 |
|
Power management |
on-chip |
STM32 power controller1 |
|
PWM |
on-chip |
||
Reset controller |
on-chip |
STM32 Reset and Clock Control (RCC) Controller1 |
|
RNG |
on-chip |
STM32 Random Number Generator1 |
|
RTC |
on-chip |
STM32 RTC1 |
|
Sensors |
on-chip |
STM32 family TEMP node for production calibrated sensors with two calibration temperatures1 |
|
on-chip |
STM32 VREF+1 |
||
on-chip |
STM32 VBAT1 |
||
Serial controller |
on-chip |
||
on-chip |
STM32 LPUART1 |
||
on-chip |
STM32 UART2 |
||
SMbus |
on-chip |
STM32 SMBus controller4 |
|
SPI |
on-chip |
||
SRAM |
on-chip |
Generic on-chip SRAM description1 |
|
Timer |
on-chip |
ARMv7-M System Tick1 |
|
on-chip |
|||
on-chip |
STM32 low-power timer (LPTIM)2 |
||
USB |
on-chip |
STM32 OTGFS controller1 |
|
Watchdog |
on-chip |
STM32 watchdog1 |
|
on-chip |
STM32 system window watchdog1 |
Pin Mapping
For more details, please refer to STM32L4R9I-DISCOVERY website.
System Clock
The STM32L4R9AI System Clock can be driven by an internal or external oscillator, as well as by the main PLL clock. By default, the System clock is driven by the PLL clock at 120MHz. PLL clock is driven by a 4MHz medium speed internal clock.
Serial Port
The STM32L4R9I Discovery board has up to 6 U(S)ARTs. The Zephyr console output is assigned to UART2, which is connected to the onboard ST-LINK Virtual COM port interface. Default communication settings are 115200 8N1.
Programming and Debugging
The STM32L4R9I Discovery board includes an ST-LINK/V2-1 debug tool.
Applications for the stm32l4r9i_disco board configuration can be
built and flashed in the usual way (see Building an Application
and Run an Application for more details).
Flashing
The board is configured to be flashed using west STM32CubeProgrammer runner, so its installation is required.
Alternatively, OpenOCD or JLink can also be used to flash the board using
the --runner (or -r) option:
$ west flash --runner openocd
$ west flash --runner jlink
Flashing an application to STM32L4R9I Discovery
Connect the STM32L4R9I Discovery to your host computer using the ST-LINK USB port, then run a serial host program to connect with the board. For example:
$ minicom -b 115200 -D /dev/ttyACM0
You can then build and flash applications in the usual way. Here is an example for the Hello World application.
# From the root of the zephyr repository
west build -b stm32l4r9i_disco samples/hello_world
west flash
You should see the following message in the serial host program:
$ Hello World! stm32l4r9i_disco
Debugging
You can debug an application in the usual way. Here is an example for the Hello World application.
# From the root of the zephyr repository
west build -b stm32l4r9i_disco samples/hello_world
west debug