spi.h

00001 /******************************************************************************
00002 * EECS 397
00003 *
00004 * Assignment Name: Lab 6: WaG
00005 * 
00006 * Authors: Sam Morrison and Phong Nguyen 
00007 * File name: spi.h
00008 * Purpose: Header for SPI driver
00009 *
00010 * Created: 03/01/2018
00011 * Last Modified: 03/29/2018
00012 *
00013 ******************************************************************************/
00014 
00015 #ifndef SPI_H
00016 #define SPI_H
00017 
00018 #define SPI_NO_ID 0
00019 #define SPI_AS1107_ID 1
00020 #define AS1107_SPI_FREQ 1000000
00021 #define AS1107_SPI_NO_BITS 16
00022 
00023 #include "mbed.h"
00024 #include "io_pins.h"
00025 
00026 extern SPI wag_spi;
00027 
00028 struct spi_cfg {
00029    int spi_id; //ID should be unique for each slave type
00030    DigitalOut spi_ncs; //The pin driving the slave's chip select
00031    int spi_mode; //SPI mode needed by this slave
00032    int spi_freq; //SPI frequency needed by this slave
00033    int spi_no_bits; //No. of data bits to be transfered each send to the slave 
00034 };
00035 
00036 void spi_send(struct spi_cfg spi_config, int spi_data);
00037 
00038 #endif