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lib/amb1_sdk/common/example/uart_atcmd/readme.txt

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+uart atcmd example is for AT command v2
+For AT command v2, please refer to "AN0075 Realtek Ameba-all at command v2.0".pdf
+
+For Ameba 1, if cannot build pass due to large code size in SRAM, you could
+1. link some codes in SDRAM, 
+2. or reduce SRAM heap (configTOTAL_HEAP_SIZE ) and enable SDRAM heap in heap_5.c.