woodstock . / Mbed 2 deprecated Nucleo_Ex03_PSPAD

This example demonstrates the reading of the PlayStation controller in the Nucleo.

Dependencies:   mbed

Intro

This example demonstrates the reading of the PlayStation controller in the Nucleo.

Parts

STM32 Nucleo F446RE
Connector for the PS controller
LED 2pcs
Register 100k ohm
Register 470 ohm 2pcs
Breadboard
Wires

Wiring diagram

/media/uploads/beaglescout007/nucleo_ex03_pspad.png This circuit diagram was created by fritzing.

PS con.Nucleo
1MISO PC_11 PullUp
2MOSI PC_12
3-
4GND
53.3v 3v3
6CS PD_2
7SCK PC_10
8-
9-

/media/uploads/beaglescout007/pad_conector.jpg

https://youtu.be/Ff4FVxsXCE0

main.cpp

Committer:
beaglescout007
Date:
2016-03-12
Revision:
0:871415d77569

File content as of revision 0:871415d77569:

#include "mbed.h"

// SPI interface
SPI pad_spi(PC_12, PC_11, PC_10);   // MOSI(should pullup), MISO, SCK
DigitalOut pad_cs(PD_2);

// LED
DigitalOut red(PB_5);
DigitalOut yellow(PA_10);

// PS pad initialize
void pspad_init()
{
    pad_spi.format(8, 3);
    pad_spi.frequency(250000);
}

// Read PS Pad state
// 15 14 13 12 11 10  9  8  7  6  5  4  3  2  1  0
// SE -- -- ST  U  R  D  L L2 R2 L1 R1 TR  O  X SQ
void pspad_read(unsigned short *pad)
{
    pad_cs = 0;
    wait_us(500);

    pad_spi.write(0x80);
    pad_spi.write(0x42);
    pad_spi.write(0);
    pad_spi.write(0);
    int d1 = pad_spi.write(0);
    int d2 = pad_spi.write(0);

    pad_cs = 1;
    
    *pad = (char)~d1 << 8 | (char)~d2;
}

int main()
{
    pspad_init();
    
    unsigned short pad;
    
    while(1)
    {
        pspad_read(&pad);
        
        // Circle button
        yellow = pad & 4;
        
        // X button
        red = pad & 2;

        wait_ms(16);
    }
}