Hi I hope someone can suggest a simple solutions for me
I’ve been doing some work with a new product using a few pics and I need usb support adding so I’ve added another pic and have a selection of lines between them
unfortunately I’m stuck with general purpose i/o lines on the master pic but the slave usb pic has hardware spi lines available
I’ve been trying to use the hardware spi in slave mode without a great deal of consistent success I can transmit to the slave just fine but I cant seem to recover any real data from it,
Has anyone tried this or can anyone suggest another way of sending packets of byte between 2 pics,
Bear in mind that both pics are using interrupts and the usarts are not available on the master.
Any suggestions?
Master = 4550 but could be a different one
Slave is 2550
Master name slave
A.0 nspisel B.4
A.3 spiclk B.1
C.6 miso C.7
B.0 mosi B.0
B.1 slave busy B.3
thanks in advance
Richard
slave spi and dual pics
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