whitenoise
Member level 1
Hi all,
in one protoype board I have a 16f877 bridging with two peripherals through the embedded uart (receive only, 57600,8,n,1 IRQ based) and a software one (transmit only,9600,8,n,1 blocking)
At power-up the peripheral send its message but the UART IRQ seems not work (I've tried to move a port upon entering ISR). Only if I manually reset the MCLR pin, the system works.
The MCLR pin is tied via a 10k resistor to Vcc.
I have already tried with an external reset chip and the PUT and BOD option of compiler but nothing happens!!
Have you ever experienced such a problem or have some idea on the problem?
thanks, wn.
in one protoype board I have a 16f877 bridging with two peripherals through the embedded uart (receive only, 57600,8,n,1 IRQ based) and a software one (transmit only,9600,8,n,1 blocking)
At power-up the peripheral send its message but the UART IRQ seems not work (I've tried to move a port upon entering ISR). Only if I manually reset the MCLR pin, the system works.
The MCLR pin is tied via a 10k resistor to Vcc.
I have already tried with an external reset chip and the PUT and BOD option of compiler but nothing happens!!
Have you ever experienced such a problem or have some idea on the problem?
thanks, wn.