BoopathiS
Member level 2
Hi,
I'm interfacing three STM 32 bit controller using internal UART communication. Consider one as master and other two are slave(Slave 1 and Slave 2) . In debug mode, UART transmission and reception happening between both master and slaves. When going to program mode, From Master to Slave 1 data is transmitting, but from slave 1 to master there is no transmission. clock is connected to external crystal.
Same Master connected to another slave 2(has same slave circuit and program and clock frequency) through another uart port of master controller, with this slave 2 uart communication is working fine in both debug and program mode.
Verified both slaves:
supply voltage, Clock frequency, Reset pin state, data rate looking fine.
Components in both slave circuit, Connections of both slace circuits looking fine
Myself, Difficult to identify root cause. Can anyone help me to identify this issue.
I'm interfacing three STM 32 bit controller using internal UART communication. Consider one as master and other two are slave(Slave 1 and Slave 2) . In debug mode, UART transmission and reception happening between both master and slaves. When going to program mode, From Master to Slave 1 data is transmitting, but from slave 1 to master there is no transmission. clock is connected to external crystal.
Same Master connected to another slave 2(has same slave circuit and program and clock frequency) through another uart port of master controller, with this slave 2 uart communication is working fine in both debug and program mode.
Verified both slaves:
supply voltage, Clock frequency, Reset pin state, data rate looking fine.
Components in both slave circuit, Connections of both slace circuits looking fine
Myself, Difficult to identify root cause. Can anyone help me to identify this issue.