Chip-cn-dat/SIMCOM/SIM7020-DAT/SIM7020-DAT.md
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# SIM7020 DAT
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## quick setup guide
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* Please use a USB-serial adapter like CP2102 or FT232RL, connect 5V, GND, VTXD and VRXD.
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* Now you can send AT commands via serial uart COM port.
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* (USB port is NOT working for debugging, please do not connect to use it.)
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+## Application Note
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+## Power supply
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-- [[SIMCOM-low-power-Dat/SIMCOM-PSM-Dat/SIMCOM-PSM-Dat]]
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-
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-
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+- VBAT Module power voltage min. 2.1 typ. 3.3 max. 3.6 V
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-## Application Note
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### PSM Mode
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- AT commands to enter into PSM power save mode
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- pull down RTC_EINT or PWR_KEY to quit PSM mode
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-
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+- [[SIMCOM-PSM-Dat]]
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## REF
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Chip-cn-dat/SIMCOM/SIMCOM-low-power-Dat/SIMCOM-PSM-Dat/SIMCOM-PSM-Dat.md
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### To enter into PSM mode
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* AT+CFUN=0,0 // minimium function mode
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* AT+CFUN=1,1 // full working mode
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* AT+CPSMS=1 // turn on PSM mode
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+## Demo video
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+
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+- https://www.youtube.com/shorts/S57VZSJNvnw
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+
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## PSM AT commands demo
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AT+CEREG=4
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OK
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- AT+C EREG?
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+ AT+CEREG?
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+CEREG:
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4,1,"5B57","01A50B1A",9,"00",,,"11100000","1110000
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0"
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//发送数据到 UDP 服务器
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//从 UDP 服务器接收数据
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//如果数据传输完毕，模式将自动进入 PSM 模式
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+## Sleep mode
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+AT+CSCLK=1
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+OK
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+//进入慢时钟模式，然后拉高 DTR，模块就会进入休眠模式
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+//拉低 DTR，模块会退出休眠模式
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+6.4.2 方法二
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+//sleep 模式示例
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+AT+CSCLK=2
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+OK
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+//自动进入慢时钟模式，当没有外部设备与模块交互时，模块会自动进入休眠模式
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+//发两次 AT 给模块即可唤醒模块
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Home.md
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- The most updated and comprehensive documentation
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- The detailed youtube demo and teaching video
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- Worldwide unique boards and solutions, Aisa cost-effective chips offer
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-- 100+ years support
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+- 100+ years support, support world peace
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- [[edragon]]
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