About ASega.1

ASega.1 · 2022-09-28

Hi,I'm using stm32mp153c and I managed to start M4 code after the SPL initialization and before U-BOOT. All initializations work fine except for the MX_OPENAMP_Init.I see that if I start the code after SPL the variable of num_of_vrings (that is equa...

ASega.1 · 2022-06-21

Hi,I'm using STM32MP153C and I would like to communicate between the A7 and the M4 using the Virtual Uart (OPENAMP and IPCC).I'm using a custom distribution created using Yocto.When I initialize the virtual uart in the M4, /dev/ttyRPMSG0 is instantia...

ASega.1 · 2022-01-31

Hi,I'm using stm32mp157a-dk1 and I want to drive a pin with the A7.I add and set (as digital output) the pin PF2 (named "Test") to "Cortex-A7 non secure" in the "Pin Reserved" on the IOC file in the window "Pinout & Configuration" of STM32CubeIDE. Th...

ASega.1 · 2022-01-10

Hi,I'm using STM32MP157A-DK1 and I built the image adding the logicanalyser layer (https://github.com/STMicroelectronics/meta-st-stm32mpu-app-logicanalyser).I follow the tutorial "How to exchange data buffers with the coprocessor".I add the rpmsg_hdr...

ASega.1 · 2021-12-23

Hi,I'm using stm32mp157a-dk1 and I would like to use rpmsg_sdb for exchanging data buffers with the coprocessor (https://wiki.st.com/stm32mpu/wiki/How_to_exchange_data_buffers_with_the_coprocessor).I built the image for the A7 following the "STM32MP...

ASega.1 · 2022-06-29

Hi,I have only a suggestion. Check if the DMA_Init is before UART3_Init in the main.c.Sorry for so poor information. Good luck.Best Regards,Andrea

ASega.1 · 2022-06-28

Hi Arnaud,thank you so much for the help and your time. I fixed my problem changing the driver as you told me.Now it works correctly.Best Regards,Andrea

ASega.1 · 2022-06-27

Hi,Thanks for the reply.What commit/release should I refer to?Best Regards,Andrea

ASega.1 · 2022-06-23

Hi,Small update of my issue.I find the problem but I don't know how fix it.When I use in linux the following command:stty -onlcr -echo -F /dev/ttyRPMSG0in M4 code is called the callback associated to the Virtual UART 0:sprintf(m_uart_buff_tx, "CM4 : ...

ASega.1 · 2022-02-14

Hi @OlivierK ,Thank you so much for your reply, useful to understand better the DT, but I found the solution to my problem (probably I didn't make myself clearabout my purpose).In the following, the patch that I get to enable pin d 11 (led blue) and...

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Why num_of_vrings is set to 0 if I start M4 code with spl and why is it set to 2 when I start code with linux?

STM32MP1 A7 and M4 communication

How to add a pin to A7 device tree to be used from linux userspace?

How read data from rpmsg-sdb device with A7 of STM32MP157A-DK1?

How add /dev/rpmsg_sdb for exchanging data buffers with the coprocessor

Re: DMA2 RX stream5 CM4 not working

Re: STM32MP1 A7 and M4 communication

Re: STM32MP1 A7 and M4 communication

Re: STM32MP1 A7 and M4 communication

Re: How to add a pin to A7 device tree to be used from linux userspace?