Todd Dale / Mbed 2 deprecated SPI_Project_Master

SPI transmission of an array, Master device.

Dependencies:   mbed

main.cpp@2:b95b33894176, 2018-05-25 (annotated)

Committer:
el15tcd
Date:
Fri May 25 19:42:57 2018 +0000
Revision:
2:b95b33894176
Parent:
1:c573caf40864 
SPI transmission of an array, Master device.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el15tcd 0:8a61e3541a5e 1 #include "mbed.h"
el15tcd 0:8a61e3541a5e 2
el15tcd 2:b95b33894176 3 SPI lights(p5,p6,p7);
el15tcd 2:b95b33894176 4 DigitalOut cs_lights(p8);
el15tcd 0:8a61e3541a5e 5
el15tcd 0:8a61e3541a5e 6 BusOut myleds(LED4, LED3, LED2, LED1);
el15tcd 2:b95b33894176 7 DigitalOut led1(LED1);
el15tcd 2:b95b33894176 8 DigitalOut led2(LED2);
el15tcd 0:8a61e3541a5e 9
el15tcd 0:8a61e3541a5e 10 int i;
el15tcd 1:c573caf40864 11 int j;
el15tcd 0:8a61e3541a5e 12
el15tcd 2:b95b33894176 13 char v;
el15tcd 2:b95b33894176 14 char redArray[8][8];
el15tcd 0:8a61e3541a5e 15
el15tcd 0:8a61e3541a5e 16 int main()
el15tcd 0:8a61e3541a5e 17 {
el15tcd 0:8a61e3541a5e 18
el15tcd 0:8a61e3541a5e 19 myleds = 0;
el15tcd 0:8a61e3541a5e 20
el15tcd 2:b95b33894176 21 for (i = 0; i < 8; i++) {
el15tcd 2:b95b33894176 22 for (j = 0; j < 8; j++) {
el15tcd 2:b95b33894176 23 redArray[i][j] = 0x30;
el15tcd 2:b95b33894176 24 }
el15tcd 2:b95b33894176 25 }
el15tcd 2:b95b33894176 26 //Array values defined
el15tcd 0:8a61e3541a5e 27
el15tcd 2:b95b33894176 28 cs_lights = 1; //data commences when cs = 0
el15tcd 2:b95b33894176 29
el15tcd 2:b95b33894176 30 lights.format(8,3); //8 bit data (or 16 bit), mode 3
el15tcd 2:b95b33894176 31 lights.frequency(1000000); //1MHz clock rate
el15tcd 2:b95b33894176 32 wait(0.5);
el15tcd 0:8a61e3541a5e 33
el15tcd 0:8a61e3541a5e 34 while(1) {
el15tcd 2:b95b33894176 35 led1 = !led1;
el15tcd 2:b95b33894176 36 cs_lights = 0; //selects the slave connected to cs_lights to receive data
el15tcd 2:b95b33894176 37 v = lights.write(0x01); //start bit
el15tcd 2:b95b33894176 38 for (i = 0; i < 8; i++) {
el15tcd 2:b95b33894176 39 for (j = 0; j < 8; j++) {
el15tcd 2:b95b33894176 40 lights.write(redArray[i][j]);
el15tcd 1:c573caf40864 41 }
el15tcd 0:8a61e3541a5e 42 }
el15tcd 2:b95b33894176 43 cs_lights = 1; //stops transmission of data to selected slave
el15tcd 2:b95b33894176 44 wait(0.1);
el15tcd 0:8a61e3541a5e 45 }
el15tcd 0:8a61e3541a5e 46 }
el15tcd 0:8a61e3541a5e 47
el15tcd 1:c573caf40864 48
el15tcd 1:c573caf40864 49