deepakkarki

/****************************************************************************/
/* LNK.CMD                                                                  */
/*                                                                          */
/*   Usage:  clpru  <src files...> -z -o <out file> -m <map file> lnk.cmd   */
/*                                                                          */
/*   Description: This file is a sample command file that can be used       */
/*                for linking programs built with the PRU C                 */
/*                Compiler.   Use it as a guideline; you may want to change */
/*                the allocation scheme according to the size of your       */
/*                program and the memory layout of your target system.      */

deepakkarki

#ifndef PRU_DEFS_H
#define PRU_DEFS_H

volatile register unsigned int __R31;
volatile register unsigned int __R30;

__far int C0 __attribute((cregister("MEM", far)));
__far int C4 __attribute((cregister("MEM", far)));

/*

deepakkarki

# 1 "test.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "test.c"
# 1 "/usr/include/stdio.h" 1 3 4
# 28 "/usr/include/stdio.h" 3 4
# 1 "/usr/include/features.h" 1 3 4
# 324 "/usr/include/features.h" 3 4
# 1 "/usr/include/i386-linux-gnu/bits/predefs.h" 1 3 4
# 325 "/usr/include/features.h" 2 3 4

deepakkarki

	.file	"test.c"
	.section	.rodata
.LC0:
	.string	"%d"
	.text
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc

deepakkarki

ELF


\00\00\00\00\00\00\00\00\00
\00\00
\00\00\00\00\00\00\00\00\00\00\00<
\00\00\00\00\00\004\00\00\00\00\00(\00
\00
\00U\89\E5\83\E4\F0\83\EC \C7D$\00\00\00\C7D$\00\00\00\8BD$\8BT$
ЉD$\B8\00\00\00\00\8BT$\89T$\89$\E8\FC\FF\FF\FF\C9\C3\00\00%d\00\00GCC: (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3\00\00\00\00\00\00\00\00\00\00
zR\00
|
\88
\00\00\00\00\00\00\00\00\00\00\00\00>\00\00\00\00A\85B
z\C5\00\00\00.symtab\00.strtab\00.shstrtab\00.rel.text\00.data\00.bss\00.rodata\00.comment\00.note.GNU-stack\00.rel.eh_frame\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00
\00\00\00\00\00\00\00\00\00\004\00\00\00>\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00	\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00
\00\00\00\00\00\00\00\00\00%\00\00\00
\00\00\00\00\00\00\00\00\00\00t\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00+\00\00\00\00\00\00\00\00\00\00\00\

deepakkarki

ELF


\00\00\00\00\00\00\00\00\00\00\00
\00\00\000\834\00\00\00<\00\00\00\00\00\004\00 \00	\00(\00\00\00\00\00\004\00\00\004\804\80 
\00\00 
\00\00\00\00\00\00\00\00\00\00\00T
\00\00T\81T\81\00\00\00\00\00\00\00\00\00
\00\00\00
\00\00\00\00\00\00\00\00\80\00\80\FC\00\00\FC\00\00\00\00\00\00\00\00
\00\00\00\00\00\9F\9F\00
\00\00
\00\00\00\00\00\00\00\00\00\00\00(\00\00(\9F(\9F\C8\00\00\00\C8\00\00\00\00\00\00\00\00\00\00\00\00h
\00\00h\81h\81D\00\00\00D\00\00\00\00\00\00\00\00\00P\E5td\00\00\85\854\00\00\004\00\00\00\00\00\00\00\00\00Q\E5td\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00R\E5td\00\00\9F\9F\EC\00\00\00\EC\00\00\00\00\00\00
\00\00\00/lib/ld-linux.so.2\00\00\00\00\00\00\00\00
\00\00\00GNU\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00GNU\00\B6\B4\ADV\B2f\E3qv0\87V]?\00\00\00\00\00\00
\00\00\00\00\00\00\00 \00 \00\00\00\00\00\00\00\ADK\E3\C0\00\00\00\00

deepakkarki

___________C Code - user space______________

int *src = (int *)mmap (NULL, 4096, PROT_READ, MAP_SHARED, m_fd, 0);

___________Kernel space driver_______________

/*
 *
 *      BIN FILE SYSFS - for mmap'ing. share mem b/w userspace, kernel and PRU
 *

deepakkarki

import pru_speak

botspeak_code   = \
'''     SET DIO[0] , 1
        WAIT 1
        SET DIO[0], 0
        WAIT 1
        GOTO 0'''

pru_speak.load(botspeak_code)

deepakkarki

SET

CMD   A     VALA     B     VALB  
0000 0000 0000 0000 0000 0000 0000 0000
\  / \  / \       / \  / \       / \  / 
SET  DIO      5     VAR      4   ignored

• A,B are one of DIO, AO, PWM, TMR, user variable, value

deepakkarki

/*
* Copyright (C) 2013 Pantelis Antoniou <panto@antoniou-consulting.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/dts-v1/;
/plugin/;