GroupA / Mbed 2 deprecated Lab_6_WaG

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Dependencies:   mbed

Fork of WaG by GroupA

spi.cpp@17:75d567b60214, 2018-03-01 (annotated)

Committer:
spm71
Date:
Thu Mar 01 17:31:04 2018 +0000
Revision:
17:75d567b60214
Child:
18:0e281922212c
Initial SPI code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
spm71 17:75d567b60214 1 /******************************************************************************
spm71 17:75d567b60214 2 * EECS 397
spm71 17:75d567b60214 3 *
spm71 17:75d567b60214 4 * Assignment Name: Lab 5: WaG
spm71 17:75d567b60214 5 *
spm71 17:75d567b60214 6 * Authors: Sam Morrison and Phong Nguyen
spm71 17:75d567b60214 7 * File name: spi.cpp
spm71 17:75d567b60214 8 * Purpose: Driver for SPI functions
spm71 17:75d567b60214 9 *
spm71 17:75d567b60214 10 * Created: 03/01/2018
spm71 17:75d567b60214 11 * Last Modified: 03/01/2018
spm71 17:75d567b60214 12 *
spm71 17:75d567b60214 13 ******************************************************************************/
spm71 17:75d567b60214 14
spm71 17:75d567b60214 15 #include "mbed.h"
spm71 17:75d567b60214 16 #include "io_pins.h"
spm71 17:75d567b60214 17 #include "spi.h"
spm71 17:75d567b60214 18 #include <stdlib.h>
spm71 17:75d567b60214 19 #include <stdio.h>
spm71 17:75d567b60214 20 #include <string.h>
spm71 17:75d567b60214 21
spm71 17:75d567b60214 22 extern spi_cfg as1107 {
spm71 17:75d567b60214 23 1,
spm71 17:75d567b60214 24 DSP_AS1107_NCS,
spm71 17:75d567b60214 25 0,
spm71 17:75d567b60214 26 1000000,
spm71 17:75d567b60214 27 16,
spm71 17:75d567b60214 28 };
spm71 17:75d567b60214 29
spm71 17:75d567b60214 30 extern spi_cfg drv8806 {
spm71 17:75d567b60214 31 2,
spm71 17:75d567b60214 32 STP_DRV8806_NCS,
spm71 17:75d567b60214 33 0,
spm71 17:75d567b60214 34 1000000,
spm71 17:75d567b60214 35 8,
spm71 17:75d567b60214 36 };
spm71 17:75d567b60214 37
spm71 17:75d567b60214 38 void spi_send(struct spi_cfg spi_config, int spi_data) {
spm71 17:75d567b60214 39 static int previous_id = SPI_NO_ID;
spm71 17:75d567b60214 40 spi_config.spi_ncs = 1;
spm71 17:75d567b60214 41 if (previous_id != spi_config.spi_id) {
spm71 17:75d567b60214 42 //send config data to master, update previous id with current id
spm71 17:75d567b60214 43 previous_id = spi_config.spi_id;
spm71 17:75d567b60214 44 }
spm71 17:75d567b60214 45 spi_config.spi_ncs = 0;
spm71 17:75d567b60214 46 wag_spi.write(spi_data);
spm71 17:75d567b60214 47 spi_config.spi_ncs = 1;
spm71 17:75d567b60214 48 }
spm71 17:75d567b60214 49