Two remaining issues in YEEP144_BluetoothUART.c, neither addressed by 1.2.
SetStatusDelimiter() transmits sizeof(rxBuf) = 10 bytes from an 8-byte stack
buffer (rxBuf is a different buffer declared earlier in the same function), so
two bytes of stack garbage follow every "SO" command the module receives. Send
strlen(txBuf) instead.
The same function passes char* to HAL_UART_Transmit(), which takes
const uint8_t*, producing three -Wpointer-sign warnings. They sit on the same
lines as the over-read, which is part of why it went unnoticed; with the casts
the file compiles warning-free.
See CODE_FIXES.md for the full write-up.
