Kaoru Shoji / Mbed 2 deprecated NESBot

The porting of the NESBot Play the 'Tool Assisted Speedrun' videos on the real machine(NES). original (with Arduino): http://www.instructables.com/id/NESBot-Arduino-Powered-Robot-beating-Super-Mario-/ Almost same as the original, it need generated Key-input data by emulator with Lua script. See the original instructables' documents to know how to generate data file. BOM: mbed x1 NES x1 NES controller x1 4021(shift registor) x1

Dependencies:   mbed

main.cpp@0:19e971e75a74, 2012-01-07 (annotated)

Committer:
kshoji
Date:
Sat Jan 07 06:23:54 2012 +0000
Revision:
0:19e971e75a74
The porting of the NESBot

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kshoji 0:19e971e75a74 1 #include "mbed.h"
kshoji 0:19e971e75a74 2
kshoji 0:19e971e75a74 3 // - The porting of the NESBot
kshoji 0:19e971e75a74 4 // original : http://www.instructables.com/id/NESBot-Arduino-Powered-Robot-beating-Super-Mario-/
kshoji 0:19e971e75a74 5 //
kshoji 0:19e971e75a74 6 // ported by Kaoru Shoji : http://mbed.org/users/kshoji
kshoji 0:19e971e75a74 7 //
kshoji 0:19e971e75a74 8 // - Connections:
kshoji 0:19e971e75a74 9 // a NES, a mbed and a 4021 (shift register) needed.
kshoji 0:19e971e75a74 10 //
kshoji 0:19e971e75a74 11 // for example) AV-FAMICOM(JPY) connector pinout
kshoji 0:19e971e75a74 12 // 1 LATCH (PL, P/S) -> mbed's 9 pin
kshoji 0:19e971e75a74 13 // 2 CLOCK -> 4021's 10 pin
kshoji 0:19e971e75a74 14 // 3 VCC -> 4021's 16 pin
kshoji 0:19e971e75a74 15 // 4 GND -> mbed's GND & 4021's 8 pin
kshoji 0:19e971e75a74 16 // 5 DATA -> 4021's 3 pin
kshoji 0:19e971e75a74 17 //
kshoji 0:19e971e75a74 18 // - Note:
kshoji 0:19e971e75a74 19 // The mbed's VCC must be supplied from USB cable.
kshoji 0:19e971e75a74 20 // If mbed's VCC is supplied from NES VCC, the LATCH signal detection may be failed.
kshoji 0:19e971e75a74 21 //
kshoji 0:19e971e75a74 22 // - How to use:
kshoji 0:19e971e75a74 23 // 0. Prepare the replay data with FCEUX and Lua script. (Lua script can be downloaded from instructables).
kshoji 0:19e971e75a74 24 // The data file needs to be placed into mbed's LocalFileSystem(on the root directory).
kshoji 0:19e971e75a74 25 // 1. NES power turn off.
kshoji 0:19e971e75a74 26 // 2. connect mbed to NES, and USB power.
kshoji 0:19e971e75a74 27 // 3. NES power turn on.
kshoji 0:19e971e75a74 28
kshoji 0:19e971e75a74 29 InterruptIn latchInterrupt(p9); // LATCH signal in
kshoji 0:19e971e75a74 30
kshoji 0:19e971e75a74 31 DigitalOut R(p10); // -> 4021's p1(7)
kshoji 0:19e971e75a74 32 DigitalOut L(p11); // -> 4021's p2(6)
kshoji 0:19e971e75a74 33 DigitalOut D(p12); // -> 4021's p3(5)
kshoji 0:19e971e75a74 34 DigitalOut U(p13); // -> 4021's p4(4)
kshoji 0:19e971e75a74 35 DigitalOut T(p14); // -> 4021's p5(13)
kshoji 0:19e971e75a74 36 DigitalOut S(p15); // -> 4021's p6(14)
kshoji 0:19e971e75a74 37 DigitalOut B(p16); // -> 4021's p7(15)
kshoji 0:19e971e75a74 38 DigitalOut A(p17); // -> 4021's p8(1)
kshoji 0:19e971e75a74 39
kshoji 0:19e971e75a74 40 // status LEDs
kshoji 0:19e971e75a74 41 DigitalOut led1(LED1);
kshoji 0:19e971e75a74 42 DigitalOut led2(LED2);
kshoji 0:19e971e75a74 43 DigitalOut led3(LED3);
kshoji 0:19e971e75a74 44 DigitalOut led4(LED4);
kshoji 0:19e971e75a74 45
kshoji 0:19e971e75a74 46 LocalFileSystem local("mbed");
kshoji 0:19e971e75a74 47
kshoji 0:19e971e75a74 48 // Large buffer may cause time rag when file loading.
kshoji 0:19e971e75a74 49 #define BUFFER_LENGTH (128)
kshoji 0:19e971e75a74 50
kshoji 0:19e971e75a74 51 unsigned char controllerData[BUFFER_LENGTH];
kshoji 0:19e971e75a74 52 int controllerDataPosition = 0;
kshoji 0:19e971e75a74 53
kshoji 0:19e971e75a74 54 FILE *fp;
kshoji 0:19e971e75a74 55 long fileLength = 0;
kshoji 0:19e971e75a74 56 long filePosition = 0;
kshoji 0:19e971e75a74 57
kshoji 0:19e971e75a74 58 volatile bool finished = false;
kshoji 0:19e971e75a74 59
kshoji 0:19e971e75a74 60 void writeButtons() {
kshoji 0:19e971e75a74 61 unsigned char state = ~controllerData[controllerDataPosition];
kshoji 0:19e971e75a74 62
kshoji 0:19e971e75a74 63 // output to shift register
kshoji 0:19e971e75a74 64 R = state & 0x80;
kshoji 0:19e971e75a74 65 L = state & 0x40;
kshoji 0:19e971e75a74 66 D = state & 0x20;
kshoji 0:19e971e75a74 67 U = state & 0x10;
kshoji 0:19e971e75a74 68 T = state & 0x08;
kshoji 0:19e971e75a74 69 S = state & 0x04;
kshoji 0:19e971e75a74 70 B = state & 0x02;
kshoji 0:19e971e75a74 71 A = state & 0x01;
kshoji 0:19e971e75a74 72 }
kshoji 0:19e971e75a74 73
kshoji 0:19e971e75a74 74 void showLEDs() {
kshoji 0:19e971e75a74 75 led1 = !U | !D;
kshoji 0:19e971e75a74 76 led2 = !L | !R;
kshoji 0:19e971e75a74 77 led3 = !A;
kshoji 0:19e971e75a74 78 led4 = !B;
kshoji 0:19e971e75a74 79 }
kshoji 0:19e971e75a74 80
kshoji 0:19e971e75a74 81 void trigger() {
kshoji 0:19e971e75a74 82 // when P/S Control signal falled(Serial mode)
kshoji 0:19e971e75a74 83 // read the controller state
kshoji 0:19e971e75a74 84 writeButtons();
kshoji 0:19e971e75a74 85 showLEDs();
kshoji 0:19e971e75a74 86
kshoji 0:19e971e75a74 87 filePosition++;
kshoji 0:19e971e75a74 88 if (filePosition >= fileLength) {
kshoji 0:19e971e75a74 89 latchInterrupt.fall(0);
kshoji 0:19e971e75a74 90 finished = true;
kshoji 0:19e971e75a74 91 return;
kshoji 0:19e971e75a74 92 }
kshoji 0:19e971e75a74 93
kshoji 0:19e971e75a74 94 controllerDataPosition++;
kshoji 0:19e971e75a74 95 if (controllerDataPosition >= BUFFER_LENGTH) {
kshoji 0:19e971e75a74 96 fread(controllerData, 1, BUFFER_LENGTH, fp);
kshoji 0:19e971e75a74 97 controllerDataPosition = 0;
kshoji 0:19e971e75a74 98 }
kshoji 0:19e971e75a74 99 }
kshoji 0:19e971e75a74 100
kshoji 0:19e971e75a74 101 int main() {
kshoji 0:19e971e75a74 102 // TODO replace your filename
kshoji 0:19e971e75a74 103 fp = fopen("/mbed/tas.txt", "rb");
kshoji 0:19e971e75a74 104 controllerDataPosition = 0;
kshoji 0:19e971e75a74 105
kshoji 0:19e971e75a74 106 fseek(fp, 0L, SEEK_END);
kshoji 0:19e971e75a74 107 fileLength = ftell(fp);
kshoji 0:19e971e75a74 108 fseek(fp, 0L, SEEK_SET);
kshoji 0:19e971e75a74 109
kshoji 0:19e971e75a74 110 fread(controllerData, 1, BUFFER_LENGTH, fp);
kshoji 0:19e971e75a74 111 writeButtons();
kshoji 0:19e971e75a74 112
kshoji 0:19e971e75a74 113 latchInterrupt.mode(PullNone);
kshoji 0:19e971e75a74 114 latchInterrupt.fall(&trigger);
kshoji 0:19e971e75a74 115
kshoji 0:19e971e75a74 116 while(!finished);
kshoji 0:19e971e75a74 117 fclose(fp);
kshoji 0:19e971e75a74 118 }