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