Add status monitor example
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Dejvino
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d1626382cb
commit
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228
example.c
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228
example.c
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <linux/i2c-dev.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <ifaddrs.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <linux/if_link.h>
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#include <signal.h>
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//#include "ssd1306.h"
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#include "spilcd_gfx.h"
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#include "spilcd_font.h"
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#define NI_MAXHOST 1025
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#define NI_MAXSERV 32
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volatile sig_atomic_t done = 0;
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struct sigaction action;
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//extern FONT_INFO *_font;
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/**
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*
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* @return
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*/
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float GetCPULoad() {
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int FileHandler;
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char FileBuffer[1024];
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float load;
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FileHandler = open("/proc/loadavg", O_RDONLY);
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if(FileHandler < 0) {
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return -1; }
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read(FileHandler, FileBuffer, sizeof(FileBuffer) - 1);
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sscanf(FileBuffer, "%f", &load);
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close(FileHandler);
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return load;
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}
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/**
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*
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* @return
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*/
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float GetMemUsage() {
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int FileHandler;
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char FileBuffer[1024];
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int memTotal, memFree, memAvail, memBuf,memCached;
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float result;
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FileHandler = open("/proc/meminfo", O_RDONLY);
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if(FileHandler < 0) {
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return -1; }
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read(FileHandler, FileBuffer, sizeof(FileBuffer) - 1);
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sscanf(FileBuffer, "MemTotal: %d kB\n MemFree: %d kB\n MemAvailable: %d kB\n Buffers: %d kB\n Cached: %d kB",
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&memTotal, &memFree, &memAvail, &memBuf, &memCached);
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close(FileHandler);
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result = 1.0 - (float)(memFree + memCached) / memTotal;
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return result;
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}
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/**
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*
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* @return
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*/
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int GetCPUTemp() {
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int FileHandler;
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char FileBuffer[1024];
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int CPU_temp;
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FileHandler = open("/sys/devices/virtual/thermal/thermal_zone0/temp", O_RDONLY);
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if(FileHandler < 0) {
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return -1; }
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read(FileHandler, FileBuffer, sizeof(FileBuffer) - 1);
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sscanf(FileBuffer, "%d", &CPU_temp);
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close(FileHandler);
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return CPU_temp / 1000;
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}
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void sig_handler(int signo)
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{
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done = 1;
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printf("received signo :%d \n", signo);
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}
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/*
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*
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*/
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int main(int argc, char** argv) {
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time_t mytime;
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struct tm *tm;
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uint8_t time_buffer[80];
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uint8_t text_buffer[100];
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struct ifaddrs *ifaddr, *ifa;
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int family, s, n, row;
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char host[NI_MAXHOST];
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// Print pid, so that we can send signals from other shells
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printf("My pid is: %d\n", getpid());
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memset(&action, 0, sizeof(struct sigaction));
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action.sa_handler = sig_handler;
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// Intercept SIGHUP and SIGINT
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if (sigaction(SIGINT, &action, NULL) == -1) {
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perror("Error: cannot handle SIGINT"); // Should not happen
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}
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if (sigaction(SIGTERM, &action, NULL) == -1) {
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perror("Error: cannot handle SIGTERM"); // Should not happen
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}
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wiringPiSetup();
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lcd_t* lcd = lcd_init(40000000, 1, 10, 7, 8);
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while (done == 0) {
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row = 2;
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//_font = (FONT_INFO*)&ubuntuMono_8ptFontInfo;
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/* Display time */
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mytime = time(NULL);
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tm = localtime (&mytime);
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//ssd1306ClearScreen(LAYER0 | LAYER1) ;
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lcd_fillScreen(lcd, 0, 0, 0);
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strftime(time_buffer, 80," %H:%M:%S %x", tm);
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//ssd1306DrawString(0, row * 8, time_buffer, 1, WHITE, LAYER0);
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lcd_drawText(lcd, 0, row * 8, time_buffer, 255, 255, 255);
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row++;
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/* Display IP */
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/* Get network information */
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if (getifaddrs(&ifaddr) == -1)
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{
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perror("getifaddrs");
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exit(EXIT_FAILURE);
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}
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/* Walk through linked list, maintaining head pointer so we
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can free list later */
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for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
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if (ifa->ifa_addr == NULL)
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continue;
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family = ifa->ifa_addr->sa_family;
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/* Display interface name and family (including symbolic
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form of the latter for the common families) */
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if ((strncmp ("eth", ifa->ifa_name, 3 ) == 0) && family == AF_INET) {
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s = getnameinfo(ifa->ifa_addr,
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(ifa->ifa_addr->sa_family == AF_INET) ? sizeof(struct sockaddr_in) :
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sizeof(struct sockaddr_in6),
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host, NI_MAXHOST,
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NULL, 0, NI_NUMERICHOST);
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if (s != 0) {
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printf("getnameinfo() failed: %s\n", gai_strerror(s));
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exit(EXIT_FAILURE);
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}
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printf("%-8s <%s>\n", ifa->ifa_name, host);
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snprintf ( text_buffer, sizeof(text_buffer), "%s: %s",ifa->ifa_name, host );
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//ssd1306DrawString(0, row * 8, text_buffer, 1, WHITE, LAYER0);
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lcd_drawText(lcd, 0, row * 8, text_buffer, 255, 255, 255);
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row++;
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}
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if ((strncmp ("wlan", ifa->ifa_name, 4 ) == 0) && family == AF_INET) {
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s = getnameinfo(ifa->ifa_addr,
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(ifa->ifa_addr->sa_family == AF_INET) ? sizeof(struct sockaddr_in) :
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sizeof(struct sockaddr_in6),
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host, NI_MAXHOST,
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NULL, 0, NI_NUMERICHOST);
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if (s != 0) {
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printf("getnameinfo() failed: %s\n", gai_strerror(s));
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exit(EXIT_FAILURE);
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}
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printf("%-8s <%s>\n", ifa->ifa_name, host);
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snprintf ( text_buffer, sizeof(text_buffer), "%s: %s",ifa->ifa_name, host );
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//ssd1306DrawString(0, row * 8, text_buffer, 1, WHITE, LAYER0);
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lcd_drawText(lcd, 0, row * 8, text_buffer, 255, 255, 255);
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row++;
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}
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}
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freeifaddrs(ifaddr);
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/* CPU usage
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*
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*/
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float c = GetCPULoad() ;
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snprintf ( text_buffer, sizeof(text_buffer), "CPU loadavg: %0.2f", c );
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printf("%s\n", text_buffer);
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//ssd1306DrawString(0, row * 8, text_buffer, 1, WHITE, LAYER0);
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lcd_drawText(lcd, 0, row * 8, text_buffer, 255, 255, 255);
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row++;
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/* Memory usage */
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float m = GetMemUsage();
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snprintf ( text_buffer, sizeof(text_buffer), "Mem used: %3.0f%%", m*100 );
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printf("%s\n", text_buffer);
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//ssd1306DrawString(4, 2, text_buffer, 1, WHITE, LAYER0);
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lcd_drawText(lcd, 4, 2, text_buffer, 255, 255, 255);
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//ssd1306DrawRect(0, 0, 127, 13, INVERSE, LAYER0);
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//ssd1306FillRect(2, 2, (int)(123 * m), 9, INVERSE, LAYER0);
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/* CPU temperature */
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int t = GetCPUTemp() ;
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snprintf ( text_buffer, sizeof(text_buffer), "CPU temp: %3d C", t );
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printf("%s\n", text_buffer);
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//ssd1306DrawString(0, row * 8, text_buffer, 1, WHITE, LAYER0);
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lcd_drawText(lcd, 0, row * 8, text_buffer, 255, 255, 255);
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row++;
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/* Refresh screen */
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//ssd1306Refresh();
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//SSD1306MSDELAY(1000);
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sleep(1);
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}
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//_font = (FONT_INFO*)&ubuntuMono_24ptFontInfo;
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//ssd1306ClearScreen(LAYER0 | LAYER1) ;
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//ssd1306Refresh();
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printf("All done!\r\n");
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return (EXIT_SUCCESS);
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}
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@ -1,3 +1,5 @@
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project('dejvino-ST7735', 'c')
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src = ['main.c', 'spilcd_gfx.c', 'spilcd_font.c', 'st7735.c']
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executable('st7735', src, link_args: '-lwiringPi')
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src1 = ['main.c', 'spilcd_gfx.c', 'spilcd_font.c', 'st7735.c']
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src2 = ['example.c', 'spilcd_gfx.c', 'spilcd_font.c', 'st7735.c']
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executable('st7735', src1, link_args: '-lwiringPi')
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executable('example', src2, link_args: '-lwiringPi')
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