I need help!
On SPI protocol in slave mode, after some time (5-10min) the byte that i received from master is corrupt, data on logic analyzer shows correctly.
After i try to send a byte to master, the spi interface becomes unresponsive, but the rest of code works.
I tested with 2 maple mini boards, one in master mode and the other in slave, they seems to work ok, but doesn't work with the other cpu i described above.
I'm trying to split apart the mainboard cpu from a display with keypads. After using the logic analyzer i assumed that the comunnication protocol is SPI, i have a single data line (receive-transmit), clock line, chip select and a key request line that goes high when a key is pressed. Package size is one byte (8bits) and SPI mode/phase is 1,1 sor spi_mode_3
For writhing code i use leaflab ide, the green one...
On arduino uno, the program runs correctly