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SElle · 2019-07-14

I'd like to test the standby mode on the board STM32MP157C-DK2,so I run the application 'OpenAMP_TTY_echo_wakeup' by following the doc -- readme.txt in STM32Cube MP1 package. However ,once I run the command $ echo mem > /sys/power/state to move C...

SElle · 2019-07-18

Thank you very much for your answer. I'm still a beginner for low power mode and linux kernel, so I'm sorry that I have so many questions to ask.1.The Table 33 in doc STM32MP157xxx reference manual RM0436.pdf mentions that DDR is off in System Stand...

SElle · 2019-07-17

Although the question I raised is already over, I still have some questions:1.Do you mean that on my Weston board, all the places that use command “echo mem > /sys/power/state�? should be replaced with "systemctl suspend" command ? For example, the t...

SElle · 2019-07-16

Thx! I've found the reason.But there is still a question, I use the Starter Package, Weston/Wayland configuration. I tested the standby mode according to the fifth step of the app's README firstly as follows:echo disabled > /sys/devices/platform/so...

SElle · 2019-07-16

Thanks! I've found the reason from this link: https://wiki.st.com/stm32mpu/wiki/STM32CubeMP1_Package .I use the Starter Package, but I run the app "OpenAMP_TTY_echo_wakeup" by loading its firmware by IDE at Engineering boot mode. This link points ou...

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Error --"-sh: echo: write error: Device or resource busy" while running app 'OpenAMP_TTY_echo_wakeup' on board STM32MP157C-DK2

Re: Error --"-sh: echo: write error: Device or resource busy" while running app 'OpenAMP_TTY_echo_wakeup' on board STM32MP157C-DK2

Re: Error --"-sh: echo: write error: Device or resource busy" while running app 'OpenAMP_TTY_echo_wakeup' on board STM32MP157C-DK2

Re: Error --"-sh: echo: write error: Device or resource busy" while running app 'OpenAMP_TTY_echo_wakeup' on board STM32MP157C-DK2

Re: Error --"-sh: echo: write error: Device or resource busy" while running app 'OpenAMP_TTY_echo_wakeup' on board STM32MP157C-DK2