fix sim76xx socket error

RT-Thread-packages / at_device

AT component porting or samples for different devices

Apache License 2.0

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Closed lchnu closed 2 years ago

lchnu commented 3 years ago

support multi-at-devices, and avoid sim76xx's CIPSEND data sending to the client indicated by at_client_get_first().

lchnu commented 3 years ago

test on STM32F429, eps32 (uart3), sim7600ce (uart6) under RT-Thread 4.0.2.