At+Sleep-Sets The Sleep Mode; At+Sysram-Checks The Remaining Space Of Ram - Espressif ESP32 At Instruction Set

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3.2.10. AT+SLEEP—Sets the Sleep Mode
Set Command
Parameters
3.2.11. AT+SYSRAM—Checks the Remaining Space of RAM
Query Command
Parameters
Espressif
AT+SLEEP=<sleep mode>
OK
Response
or
ERROR
<sleep mode>:
‣ 0: disable the sleep mode.
‣ 1: Modem-sleep mode.
Example
AT+SLEEP=0
AT+SYSRAM?
+SYSRAM:<remaining RAM size>
Response
OK
<remaining RAM size>: remaining space of RAM, unit: byte
AT+SYSRAM?
Example
+SYSRAM:148408
OK
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3. Basic AT Commands
2017.02