void can_read_status(){
// Reset the SPI buffer
spi_init_buffer();
// Load and TX command
spi_load_byte(c2515Status);
spi_load_byte(0x00);
spi_exchange();
spi_wait_for_completion();
serial_printf("Status = ");
serial_print_hex(spi_get_byte(1));
return;
}
static unsigned int lcm_compare_id(void)
{
unsigned int id1 = 0;
unsigned int id2 = 0;
unsigned int id = 0;
config_gpio();
SET_RESET_PIN(1);
MDELAY(20);
SET_RESET_PIN(0);
MDELAY(150);
SET_RESET_PIN(1);
MDELAY(50);
set_lcm_register(0xF000,0x55);
set_lcm_register(0xF001,0xAA);
set_lcm_register(0xF002,0x52);
set_lcm_register(0xF003,0x08);
set_lcm_register(0xF004,0x01);
send_ctrl_cmd(0xc500);
id1 = spi_get_byte(0xc0); //spi_read_data();
MDELAY(20);
send_ctrl_cmd(0xc501);
id2 = spi_get_byte(0xc0); //spi_read_data();
id = (id1<<8)|id2;
#ifdef BUILD_UBOOT
printf("lcd_id1=0x%x,lcd_id2=0x%x,lcd_id=0x%x \r\n",id1,id2,id);
#else
printk("lcd_id1=0x%x,lcd_id2=0x%x,lcd_id=0x%x \r\n",id1,id2,id);
#endif
return (NT35510_LCM_ID == id)?1:0;
}
////////////////////////////////////////////////////////////
// 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);
}
