Somebody knows if, it is possible that we can use the protocol i2c and spi at the same time with oneself pic(PIC16F877A).
Devices to use with these two protocols
write/read a card SD or MMC --> Protocol SPI
ds1307, ISD51xx , ... --> Protocol I2C
This is a job for multi-tasking. Set up two tasks that when busy, give up and allow the other task to execute.