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uart_rpmsg_bus

uart based remote processor messaging bus, UART folder contain the STM32f4 code.

How to compile

  • modify setup.sh to adapt it to your own toolchain then run:
PC:~$ . setup.sh
PC:~$ make
  • insert uart_rpmsg_bus.ko in your linux target:
Linux_target:~# insmod uart_rpmsg_bus.ko

How to probe a device

to be probbed the device must be declared in the device tree. the example bellow show how it can be declared for a STM32MP1-dk2 board. This declaration will enable the serial device present on the Arduino pins.

/* Uart test */
&uart7 {
	status = "okay";
	stm32f4_uart{
		compatible = "st,uart_rpmsg";
		max-speed = <57600>;
	};
};