OnStep no conected


Hello friends
I have a problem with data transmission on my onstep bluepill with stm32f103c8t6 chip
I have loaded the code satisfactorily but when I want to connect to the planetarium (cdc, stellarium, etc) it does not have a connection to the board, although it recognizes the com port there is no connection, the same for wifi and bluetooth none recognize data transmission and reception I have tried the eeprom, rtc, wifi modules, hc06, external hc05, and nothing
Check physical connection is everything in order
Can someone help me please


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