pratimugale

/* Author: Pratim Ugale <pratim.ugale@gmail.com>
 *
 * To change Date, Time settings of the clock, switch OFF "Automatically set time from the Internet" on your PC
 *
 * Run this program with root permissions(sudo)
 *
 */

#include <iostream>
#include <stdio.h>

pratimugale

#!/bin/sh

# For the pruss_api driver
sudo depmod -ae

# For the prussd daemon service
sudo chmod a+x /usr/bin/prussd.py
sudo systemctl enable prussd.service
sudo systemctl daemon-reload
sudo systemctl start prussd.service 

pratimugale

Incorrect values written in PRU SRAM: (Each line denotes the data in that memory address offset)
Byte 1: 0x0001 0000: 53
Byte 2: 0x0001 0001: 0
Byte 3: 0x0001 0002: 0
Byte 4: 0x0001 0003: 0
Byte 5: 0x0001 0004: 53
53
62
56
43

pratimugale

debian@beaglebone:~/PRUSS-Bindings/examples/firmware_examples/example9-multichannel-waveform-gen$ ./userspace.o 

Message from syslogd@beaglebone at Aug 19 20:37:04 ...
 kernel:[ 3182.544410] Internal error: Oops: 5 [#1] PREEMPT SMP ARM

Message from syslogd@beaglebone at Aug 19 20:37:04 ...
 kernel:[ 3182.651471] Process prussd.py (pid: 2103, stack limit = 0xdaab0218)

Message from syslogd@beaglebone at Aug 19 20:37:04 ...
 kernel:[ 3182.657767] Stack: (0xdaab1f00 to 0xdaab2000)

pratimugale

# Makefile that contains the install instructions to create the pruapi debian package.

# Path to the pruss_api.c loadable kernel module.
MDIR := drivers

# Path to the prussd.py python daemon service.
DDIR := prussd

# Path to the cpp-bindings.
CDIR := cpp-bindings

pratimugale

debian@beaglebone:~/work/PRUSS-Bindings/examples/firmware_examples/example9-multichannel-waveform-gen$ sudo rmmod rpmsg_pru 
debian@beaglebone:~/work/PRUSS-Bindings/examples/firmware_examples/example9-multichannel-waveform-gen$ ./test.o 
Wave 1Sample 0
Wave 2Sample 0
Wave 3Sample 0
Wave 4Sample 0
Wave 5Sample 0

Message from syslogd@beaglebone at Jul 31 15:21:52 ...
 kernel:[  354.481219] Internal error: Oops: 5 [#1] PREEMPT SMP ARM

pratimugale

#!/usr/bin/python3

# prussd.py - Daemon to process PRU access requests
#                for non-root processes
#
# Copyright (c) 2018 Mohammed Muneeb
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 3 as published by
# the Free Software Foundation.

pratimugale

// When showing the oops message:

$ dmesg
[  209.638868] remoteproc remoteproc2: powering up 4a338000.pru
[  209.652589] remoteproc remoteproc2: Booting fw image am335x-pru1-fw, size 74736
[  209.655820] pruss 4a300000.pruss: configured system_events[63-0] = 0x00000000.000c0000
[  209.655841] pruss 4a300000.pruss: configured intr_channels = 0x0000000a host_intr = 0x0000000a
[  209.663057] remoteproc remoteproc2: registered virtio0 (type 7)
[  209.663078] remoteproc remoteproc2: remote processor 4a338000.pru is now up
[  209.778529] virtio_rpmsg_bus virtio0: creating channel rpmsg-pru addr 0x1f

pratimugale

/example9-multichannel-waveform-gen$ dmesg
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.14.71-ti-r80 (root@b2-am57xx-beagle-x15-2gb) (gcc version 6.3.0 20170516 (Debian 6.3.0-18+deb9u1)) #1 SMP PREEMPT Fri Oct 5 23:50:11 UTC 2018
[    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: TI AM335x BeagleBone Black
[    0.000000] Memory policy: Data cache writeback
[    0.000000] efi: Getting EFI parameters from FDT:
[    0.000000] efi: UEFI not found.
[    0.000000] cma: Reserved 48 MiB at 0x9c800000

pratimugale

#include "../../../cpp-bindings/pruss.h"
#include <iostream>
#include <math.h>

#define PI 3.14159

using namespace std;

int main()
{