wolfg1969 · November 11, 2020 11:49 · kevinkhill · Mar 25, 2013
diff --git a/pcd8544_rpi_ip.c b/pcd8544_rpi_ip.c
 /*
 =================================================================================
 Name        : pcd8544_rpi.c
 Version     : 0.1

 Copyright (C) 2012 by Andre Wussow, 2012, [email protected]

 Description :
     A simple PCD8544 LCD (Nokia3310/5110) for Raspberry Pi for displaying some system informations.
   Makes use of WiringPI-library of Gordon Henderson (https://projects.drogon.net/raspberry-pi/wiringpi/)

 	 Recommended connection (http://www.raspberrypi.org/archives/384):
 	 LCD pins      Raspberry Pi
 	 LCD1 - GND    P06  - GND
 	 LCD2 - VCC    P01 - 3.3V
 	 LCD3 - CLK    P11 - GPIO0
 	 LCD4 - Din    P12 - GPIO1
 	 LCD5 - D/C    P13 - GPIO2
 	 LCD6 - CS     P15 - GPIO3
 	 LCD7 - RST    P16 - GPIO4
 	 LCD8 - LED    P01 - 3.3V 

 ================================================================================
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.
 ================================================================================
 */
 #include <wiringPi.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/sysinfo.h>
 #include "PCD8544.h"

 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/ioctl.h>
 #include <netinet/in.h>
 #include <net/if.h>

 // pin setup
 int _din = 1;
 int _sclk = 0;
 int _dc = 2;
 int _rst = 4;
 int _cs = 3;
  
 // lcd contrast 
 int contrast = 50;

 char* get_ip() {
  int fd;
  struct ifreq ifr;

  fd = socket(AF_INET, SOCK_DGRAM, 0);

  ifr.ifr_addr.sa_family = AF_INET;

  strncpy(ifr.ifr_name, "wlan0", IFNAMSIZ-1);

  ioctl(fd, SIOCGIFADDR, &ifr);

  close(fd);

  //printf("%s\n", inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr));
  return  (char *) inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr);
 }
  
 int main (void)
 {
  // print infos
  printf("Raspberry Pi PCD8544 sysinfo display\n");
  printf("========================================\n");
  
  // check wiringPi setup
  if (wiringPiSetup() == -1)
  {
 	printf("wiringPi-Error\n");
    exit(1);
  }
  
  // init and clear lcd
  LCDInit(_sclk, _din, _dc, _cs, _rst, contrast);
  LCDclear();
  
  // show logo
  LCDshowLogo();
  
  delay(2000);
  
  for (;;)
  {
 	  // clear lcd
 	  LCDclear();
 	  
 	  // get system usage / info
 	  struct sysinfo sys_info;
 	  if(sysinfo(&sys_info) != 0)
 	  {
 		printf("sysinfo-Error\n");
 	  }
 	  
 	  // uptime
 	  char uptimeInfo[15];
 	  unsigned long uptime = sys_info.uptime / 60;
 	  sprintf(uptimeInfo, "Uptime %ld min.", uptime);
 	  
 	  // cpu info
 	  char cpuInfo[10]; 
 	  unsigned long avgCpuLoad = sys_info.loads[0] / 1000;
 	  sprintf(cpuInfo, "CPU %ld%%", avgCpuLoad);
 	  
 	  // ram info
 	  char ramInfo[10]; 
 	  unsigned long totalRam = sys_info.freeram / 1024 / 1024;
 	  sprintf(ramInfo, "RAM %ld MB", totalRam);
 	 //printf("RAM %ld MB\n", totalRam);
 	  
          char ipInfo[24];
 	  sprintf(ipInfo, "%s", get_ip());
 	  
 	  // build screen
 	  LCDdrawstring(0, 0, "Raspberry Pi:");
 	  LCDdrawline(0, 10, 83, 10, BLACK);
 	  LCDdrawstring(0, 12, uptimeInfo);
 	  LCDdrawstring(0, 20, cpuInfo);
 	  LCDdrawstring(0, 28, ramInfo);
          LCDdrawstring(0, 36, ipInfo);
 	  LCDdisplay();
 	  
 	  delay(10000);
  }
  
    //for (;;){
  //  printf("LED On\n");
  //  digitalWrite(pin, 1);
  //  delay(250);
  //  printf("LED Off\n");
  //  digitalWrite(pin, 0);
  //  delay(250);
  //}

  return 0;
 }
	/*
	=================================================================================
	Name : pcd8544_rpi.c
	Version : 0.1

	Copyright (C) 2012 by Andre Wussow, 2012, [email protected]

	Description :
	A simple PCD8544 LCD (Nokia3310/5110) for Raspberry Pi for displaying some system informations.
	Makes use of WiringPI-library of Gordon Henderson (https://projects.drogon.net/raspberry-pi/wiringpi/)

	Recommended connection (http://www.raspberrypi.org/archives/384):
	LCD pins Raspberry Pi
	LCD1 - GND P06 - GND
	LCD2 - VCC P01 - 3.3V
	LCD3 - CLK P11 - GPIO0
	LCD4 - Din P12 - GPIO1
	LCD5 - D/C P13 - GPIO2
	LCD6 - CS P15 - GPIO3
	LCD7 - RST P16 - GPIO4
	LCD8 - LED P01 - 3.3V

	================================================================================
	This library is free software; you can redistribute it and/or
	modify it under the terms of the GNU Lesser General Public
	License as published by the Free Software Foundation; either
	version 2.1 of the License, or (at your option) any later version.

	This library is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	Lesser General Public License for more details.
	================================================================================
	*/
	#include <wiringPi.h>
	#include <stdint.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <sys/sysinfo.h>
	#include "PCD8544.h"

	#include <sys/types.h>
	#include <sys/socket.h>
	#include <sys/ioctl.h>
	#include <netinet/in.h>
	#include <net/if.h>

	// pin setup
	int _din = 1;
	int _sclk = 0;
	int _dc = 2;
	int _rst = 4;
	int _cs = 3;

	// lcd contrast
	int contrast = 50;

	char* get_ip() {
	int fd;
	struct ifreq ifr;

	fd = socket(AF_INET, SOCK_DGRAM, 0);

	ifr.ifr_addr.sa_family = AF_INET;

	strncpy(ifr.ifr_name, "wlan0", IFNAMSIZ-1);

	ioctl(fd, SIOCGIFADDR, &ifr);

	close(fd);

	//printf("%s\n", inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr));
	return (char ) inet_ntoa(((struct sockaddr_in )&ifr.ifr_addr)->sin_addr);
	}

	int main (void)
	{
	// print infos
	printf("Raspberry Pi PCD8544 sysinfo display\n");
	printf("========================================\n");

	// check wiringPi setup
	if (wiringPiSetup() == -1)
	{
	printf("wiringPi-Error\n");
	exit(1);
	}

	// init and clear lcd
	LCDInit(_sclk, _din, _dc, _cs, _rst, contrast);
	LCDclear();

	// show logo
	LCDshowLogo();

	delay(2000);

	for (;;)
	{
	// clear lcd
	LCDclear();

	// get system usage / info
	struct sysinfo sys_info;
	if(sysinfo(&sys_info) != 0)
	{
	printf("sysinfo-Error\n");
	}

	// uptime
	char uptimeInfo[15];
	unsigned long uptime = sys_info.uptime / 60;
	sprintf(uptimeInfo, "Uptime %ld min.", uptime);

	// cpu info
	char cpuInfo[10];
	unsigned long avgCpuLoad = sys_info.loads[0] / 1000;
	sprintf(cpuInfo, "CPU %ld%%", avgCpuLoad);

	// ram info
	char ramInfo[10];
	unsigned long totalRam = sys_info.freeram / 1024 / 1024;
	sprintf(ramInfo, "RAM %ld MB", totalRam);
	//printf("RAM %ld MB\n", totalRam);

	char ipInfo[24];
	sprintf(ipInfo, "%s", get_ip());

	// build screen
	LCDdrawstring(0, 0, "Raspberry Pi:");
	LCDdrawline(0, 10, 83, 10, BLACK);
	LCDdrawstring(0, 12, uptimeInfo);
	LCDdrawstring(0, 20, cpuInfo);
	LCDdrawstring(0, 28, ramInfo);
	LCDdrawstring(0, 36, ipInfo);
	LCDdisplay();

	delay(10000);
	}

	//for (;;){
	// printf("LED On\n");
	// digitalWrite(pin, 1);
	// delay(250);
	// printf("LED Off\n");
	// digitalWrite(pin, 0);
	// delay(250);
	//}

	return 0;
	}