1.8 KiB
- 工作
-
文金对功耗
- 更新新版本之后sensor变低
- usb会引发提前唤醒?
-
菊姐
- vnne?
- 测试啥?
-
sramP改电
-
文艺iic ok
- 小核和大核读代码逻辑不一样 一个是发一个连续的 另一个是离散的发两个
- 见
-
测试iic命令备注 rt_i2c_read 0 0x49 0x1 1
rt_i2c_read 0 0x51 0x1 1
i2cget -f -y 0 0x49 0x1rt_i2c_open 0 rt_i2c_write 0 0x49 0x1 1 0x46 rt_i2c_write 0 0x4a 0x1 1 0x28 60 rt_i2c_write 0 0x4b 0x1 1 0x28 rt_i2c_write 0 0x4c 0x1 1 0x28 rt_i2c_write 0 0x4d 0x1 1 0x28 rt_i2c_write 0 0x4f 0x1 1 0x28
都压制到0.4v
rt_i2c_open 0
rt_i2c_write 0 0x49 0x1 1 0 rt_i2c_write 0 0x4a 0x1 1 0 rt_i2c_write 0 0x4b 0x1 1 0 rt_i2c_write 0 0x4c 0x1 1 0 rt_i2c_write 0 0x4d 0x1 1 0 rt_i2c_write 0 0x4f 0x1 1 0rt_i2c_write 0 0x49 0x1 1 0x46 rt_i2c_write 0 0x4a 0x1 1 0x28 rt_i2c_write 0 0x4b 0x1 1 0x28 rt_i2c_write 0 0x4c 0x1 1 0x28 rt_i2c_write 0 0x4d 0x1 1 0x28 rt_i2c_write 0 0x4f 0x1 1 0x28 a55_deassert
回到 75 60
-
pm_suspend S2 S3(deep sleep) CONFIG_SUSPEND_SKIP_SYNC
- enter_state s2idle shallow deep
- suspend_devices_and_enter
- suspend_enter
- syscore_suspend
- suspend_enter
- suspend_devices_and_enter
- enter_state s2idle shallow deep
-
- 分析suspend流程 看一下用的什么中断来唤醒?
- 并不是用中断唤醒,而是直接复位了cpu。
- 还有2个问题
- 复位之前 cpu状态如何? 肯定不是wfi
- 复位地址是怎么发给小核的?
- rpmsg底层用的什么函数?
- 分析内核日志打印
- 先不看了,因为是复位 [%5lu.%06lu]
- log_output
- log_store 传入了ts_nsec,
- local_clock
- sched_clock
- 有2个实现 time/sched_clock.c
- local_clock
- info_print_prefix print_time(info->ts_nsec)