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update README.md. 

Signed-off-by: 慕炎 <29385962@qq.com>
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慕炎 2022-09-12 03:31:38 +00:00 committed by Gitee
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@ -50,6 +50,8 @@ HW6.01的程序使用 https://gitee.com/muyan3000/esp32-mppt/tree/master/esp32_b
flash_download_tool工具（下载地址：[https://www.espressif.com/zh-hans/support/download/other-tools](https://www.espressif.com/zh-hans/support/download/other-tools) ），选择esp32进行烧写 flash_download_tool工具（下载地址：[https://www.espressif.com/zh-hans/support/download/other-tools](https://www.espressif.com/zh-hans/support/download/other-tools) ），选择esp32进行烧写
建议先烧录https://gitee.com/muyan3000/esp32-mppt/blob/master/esp32_buck_boost/bin/i2cdetect.bin，I2C检测程序，检查INA226的地址是否正确
正常的TI INA226地址为0X40和0X41
2、烧写完成后，通过串口调试助手之类的串口工具，对输入输出电压进行查看校准 2、烧写完成后，通过串口调试助手之类的串口工具，对输入输出电压进行查看校准