PPS-GPIO是Linux内核中用于处理通过GPIO引脚输入的PPS(Pulse Per Second,每秒一个脉冲)信号的驱动框架。 GPIO作为PPS信号源:PPS-GPIO驱动允许使用GPIO引脚作为PPS信号源。 中断处理:PPS-GPIO驱动通过注册GPIO中断来处理PPS信号。当检测到GPIO电平变化时,驱动会记录当前系统运行时刻,并把事件发送到用户空间。 时间同步:PP...
domain: :soc:gpio@2320000 hwirq: 0x1c chip: mpc8xxx-gpio flags: 0x0 cat /sys/kernel/debug/irq/domains/:soc:gpio@2320000name: :soc:gpio@2320000 size: 32 mapped: 0 flags: 0x00000040 When we insert the pps-gpio kernel module, we rcu_preempt self-detected stall on CPU. [ 2323.155028...
I want to use GPIO3_PN.02 as an pps signal source, and use ppstest tool to monitor the signal, but it seem’s not working. here is my debug info. 1.Modify the device tree as follows: pps { compatible = "pps-gpio"; gpios = <&tegra_main_gpio TEGRA234_MAIN_GPIO(N, 2) GPIO_...
我目前了解到以太网接收到Sync报文可能会产生PPS信号,但具体怎么产生的不太清楚。GPIO配置部分代码如下,请大佬救救我 盖盖盖盖帆 默默无闻 1 对于GPIO_AF_ETH这个引脚复用的功能知道他作用是可以将GPIO引脚设为以太网MAC和PHY之间的接口,来实现网络通信,但是跟PPS脉冲有什么关系还是不太了解 菲色华年 默默无闻 ...
This is a patch for pps-gpio module to enable GPIO pin config during module loading.It is based on the PPS patch for Raspberry Pi.The patched pps-gpio module accept three parameters:gpio_pin: the GPIO pin number, default to use pin 18. falling_edge: rising / falling edge of PPS signal...
In kernel 5.4 there is no support for using a GPIO pin as a PPS generator, only a GPIO PPS client is available. This driver is derived from the current parallel port PPS generator and provides a PPS signal through a GPIO pin specified in the device tree. The PPS signal is synchronized ...
Please provide the following info (tick the boxes after creating this topic): Software Version DRIVE OS 6.0.8.1 DRIVE OS 6.0.6 DRIVE OS 6.0.5 DRIVE OS 6.0.4 (rev. 1) DRIVE OS 6.0.4 SDK other Target Operatin…
fdtput -t s /media/boot/meson8b_odroidc.dtb /pps compatible "pps-gpio" fdtput -t s /media/boot/meson8b_odroidc.dtb /pps gpios "GPIOY_3" Reboot the board to test. Testing GPIO PPS Client Start feeding the signal to the selected pin (#7 in this example). Remember that the logic...
domain: :soc:gpio@2320000 hwirq: 0x1c chip: mpc8xxx-gpio flags: 0x0 cat /sys/kernel/debug/irq/domains/:soc:gpio@2320000name: :soc:gpio@2320000 size: 32 mapped: 0 flags: 0x00000040 When we insert the pps-gpio kernel module, we rcu_preempt self-detected stall on CPU. [ 2323.155028...
domain: :soc:gpio@2320000 hwirq: 0x1c chip: mpc8xxx-gpio flags: 0x0 cat /sys/kernel/debug/irq/domains/:soc:gpio@2320000name: :soc:gpio@2320000 size: 32 mapped: 0 flags: 0x00000040 When we insert the pps-gpio kernel module, we rcu_preempt self-detected stall on CPU. [ 2323.155028...