ATBTLC1000-ZR: Host communication failure


TitleATBTLC1000-ZR: Host communication failure
ATBTLC1000-ZR modules do not communicate with host micro-controller. But, ATBTLC1000-ZR Xpro board is working, what is the issue with the module?
Please check the UART Flow control eFuse configuration on ATBTLC1000-ZR module. Refer to section Hardware Flow Control for 4-Wire Mode eFuse Write Procedure, ATBTLC1000 BluSDK Example Profiles Application User's Guide (

If the ATBTLC1000-ZR module eFuse is not configured for "4-wire UART" mode, you can configure the UART Flow control to 4-wire mode (refer to the document pointed above).
URL NameATBTLC1000-ZR--Host-communication-failure

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