- 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 0x1 rt_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 0 rt_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 - - 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 - info_print_prefix print_time(info->ts_nsec)