////////////////////////////////////////////////////////////
// Read the contents of the register at <address>
////////////////////////////////////////////////////////////
char can_read_reg(char address){
spi_init_buffer();
// Read command
spi_load_byte(c2515Read);
// Register address
spi_load_byte(address);
// Expect one byte answer
spi_load_zeros(0x01);
// Start the transfer
spi_exchange();
spi_wait_for_completion();
return spi_get_byte(2);
}
////////////////////////////////////////////////////////////
// Read several bytes from the other device into the
// data buffer. Used when you're talking through a
// one-wire SPI interface (e.g. for nRF2401).
// ! The data output pin should be disabled when this
// ! routine is called.
////////////////////////////////////////////////////////////
void spi_read(char nr_of_bytes){
// Buffer init
spi_init_buffer();
// Set the number of bytes we want to read
spi_load_zeros(nr_of_bytes);
// Disable the output pin
//spi_do_tris = 1;
// Do the exchange
spi_exchange();
// Wait for completion
spi_wait_for_completion();
// Enable the output pin again
//spi_do_tris = 0;
return;
}
