Diff: main.cpp

Revision:

0:a5957f25b150

Child:

1:51bc46468482

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jul 26 04:51:00 2013 +0000
@@ -0,0 +1,162 @@
+#include "mbed.h"
+
+//#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define PAR_NEGOTIATE_EXTENSIBILITY_LINK        0x80
+#define PAR_NEGOTIATE_REQ_EPP_MODE              0x40
+#define PAR_NEGOTIATE_REQ_ECP_MODE              0x10
+#define PAR_NEGOTIATE_REQ_ECP_RLE_MODE          0x30
+#define PAR_NEGOTIATE_REQ_DEV_ID_NIBBLE_MODE    0x04
+#define PAR_NEGOTIATE_REQ_DEV_ID_BYTE_MODE      0x05
+#define PAR_NEGOTIATE_REQ_DEV_ID_ECP_MODE       0x14
+#define PAR_NEGOTIATE_REQ_DEV_ID_ECP_RLE_MODE   0x34
+#define PAR_NEGOTIATE_NIBBLE_MODE               0x00
+#define PAR_NEGOTIATE_BYTE_MODE                 0x01
+
+/*
+Instructions for use: connect the mbed to a parallel port using these connexions.
+use a terminal program to connect via USB to the mbed side.
+
+This program uses CR to rewrite over the status previously printed. Setup the terminal
+program so that CR = CR without line feed.
+
+15 nError       -> p9
+13 Select       -> p10
+12 PE           -> p11
+11 Busy         -> p12
+10 nAck         -> p13
+
+ 1 nStrobe      -> p14
+14 nAutoFeed    -> p15
+16 nInit        -> p16
+17 nSelectIn    -> p17
+*/
+
+DigitalOut nError(p9);
+DigitalOut Select(p10);
+DigitalOut PaperOut(p11);
+DigitalOut Busy(p12);
+DigitalOut nAck(p13);
+
+DigitalIn nStrobe(p14);
+DigitalIn nAutoFeed(p15);
+DigitalIn nInit(p16);
+DigitalIn nSelectIn(p17);
+
+/*
+D0 p30  p0.4
+D1 p29  p0.5
+D2 p8   p0.6
+D3 p7   p0.7
+D4 p6   p0.8
+D5 p5   p0.9
+D6 p28  p0.10
+D7 p27  p0.11
+*/
+BusInOut PtrData(p30,p29,p8,p7,p6,p5,p28,p27);
+
+#define __DOUTBUFSIZE 256
+#define __DINBUFSIZE 256
+char __outstr[__DOUTBUFSIZE];
+char __instr[__DINBUFSIZE];
+
+Serial pc(USBTX, USBRX); // tx, rx
+
+int main() {
+
+char key;
+bool PortIsInput = false;
+
+    PtrData.input();
+
+    pc.printf("Parallel port tester on mbed\r\n\n");
+    pc.printf("Press keys 0-7,G,H,J,K and L to toggle output bits (inputs on PC)\r\n");
+    pc.printf("Press keys I and O to toggle data direction for bits 0-7\r\n");
+    pc.printf(" (be sure your PC and mbed don't output at the same time)\r\n\n");
+    pc.printf("PINS 9-2     1    14    16    17     ------ 15    13    12    11    10\r\n");
+    pc.printf("DATA 7-0   /STB  /AF  /INIT  /SEL_IN ------/ERR   SEL   PO    BUSY  /ACK\r\n");
+    pc.printf("Keys                                 ------  G     H     J     K     L\r\n");
+             //  XX         B     B     B     B     ------  B     B     B     B     B
+    while(1) {
+        pc.printf("  %02X         %c     %c     %c     %c             %c     %c     %c     %c     %c \r",
+            PtrData & 0xff,
+            '0'| nStrobe,
+            '0'| nAutoFeed,
+            '0'| nInit,
+            '0'| nSelectIn,            
+            '0'| nError,
+            '0'| Select,
+            '0'| PaperOut,
+            '0'| Busy,
+            '0'| nAck                                                
+            );
+
+        if (pc.readable())
+        {
+            key = pc.getc();
+            switch(key)
+            {
+                case 'I':
+                    PtrData.input();
+                    PortIsInput = true;
+                    break;
+                case 'O':
+                    PtrData.output();
+                    PortIsInput = false;
+                    break;
+                case '0':
+                    if (!PortIsInput)
+                    PtrData = PtrData ^ 0x01;
+                    break;
+                case '1':
+                    if (!PortIsInput)
+                    PtrData = PtrData ^ 0x02;
+                    break;
+                case '2':
+                    if (!PortIsInput)
+                    PtrData = PtrData ^ 0x04;
+                    break;
+                case '3':
+                    if (!PortIsInput)
+                    PtrData = PtrData ^ 0x08;
+                    break;
+                case '4':
+                    if (!PortIsInput)
+                    PtrData = PtrData ^ 0x10;
+                    break;
+                case '5':
+                    if (!PortIsInput)
+                    PtrData = PtrData ^ 0x20;
+                    break;
+                case '6':
+                    if (!PortIsInput)
+                    PtrData = PtrData ^ 0x40;
+                    break;
+                case '7':
+                    if (!PortIsInput)
+                    PtrData = PtrData ^ 0x80;
+                    break;
+                case 'G':
+                    nError = !nError;
+                    break;
+                case 'H':
+                    Select = !Select;
+                    break;
+                case 'J':
+                    PaperOut = !PaperOut;
+                    break;
+                case 'K':
+                    Busy = !Busy;
+                    break;
+                case 'L':
+                    nAck = !nAck;
+                    break;
+                default:
+                    ; 
+            }
+        }
+    }
+}