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Yji.1
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2020-03-28
2023-06-14
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Why USART 2 failed to initialize when Linux started?
2020-04-13
board: stm32mp157a-dk1device-tree:pinctrl{ usart2_pins_b: usart2-0 { pins1 { pinmux = <STM32_PINMUX('F', 5, AF7)>; /* USART2_TX */ bias-disable; drive-push-pull; slew-rate = <0>; }; pins2 { pinmux = <STM32_PINMUX('F', 4, AF7)>; /* USA...
在我试用stm32_rpmsg_sdb驱动测试大数�?�传输时,�?�到数�?�传输错误的问题
2020-03-29
CM4:基于官方给出的例�?,我去掉通过IO�?�数�?�采样,采用填充固定数�?�进入缓冲区的方法,在传递到DDR的相应缓冲区中。A7:基于官方的测试例�?,�?写入文件,直接将接收到的数�?�显示到频幕上。我�?�现,在多次数�?�传输�?�,Linux应用程�?读�?�的DDR数�?�出现错误,这些数�?�以64字节为�?��?。如下图所示,我填充的时0x1f,但是缓冲区中出现了0x1c和0x16,他们都是之�?写入的数�?�。请问这个问题�?�能是怎样造�?的。
Re: Why USART 2 failed to initialize when Linux started?
2020-04-13
I finish it.I miss to config aliases.aliases { ethernet0 = ðernet0; serial0 = &uart4; serial1 = &usart2; serial2 = &uart7; };serial1 = &usart2, it's ok.
Re: Why USART 2 failed to initialize when Linux started?
2020-04-13
linux kernel:Linux buildroot 4.19.26-rt16 #1 SMP PREEMPT RT Sat Apr 11 09:24:16 CST 2020 armv7l GNU/Linux
Re: 在我试用stm32_rpmsg_sdb驱动测试大数�?�传输时,�?�到数�?�传输错误的问题
2020-03-31
thank you , MCATR. I'll try it by rpmsg_tty again.
Re: 在我试用stm32_rpmsg_sdb驱动测试大数�?�传输时,�?�到数�?�传输错误的问题
2020-03-31
It's a mistake, send data 2Kbytes/10 milsecond
Re: 在我试用stm32_rpmsg_sdb驱动测试大数�?�传输时,�?�到数�?�传输错误的问题
2020-03-31
this is my linux program. please give me some advise.
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