diff options
Diffstat (limited to 'common/recipes-applications/rtc-test/files/rtc-test.c')
| -rw-r--r-- | common/recipes-applications/rtc-test/files/rtc-test.c | 505 |
1 files changed, 0 insertions, 505 deletions
diff --git a/common/recipes-applications/rtc-test/files/rtc-test.c b/common/recipes-applications/rtc-test/files/rtc-test.c deleted file mode 100644 index 3411e4c8..00000000 --- a/common/recipes-applications/rtc-test/files/rtc-test.c +++ /dev/null @@ -1,505 +0,0 @@ -/***************************************************************************** -* -* Copyright (c) 2014, Advanced Micro Devices, Inc. -* All rights reserved. -* -* Redistribution and use in source and binary forms, with or without -* modification, are permitted provided that the following conditions are met: -* * Redistributions of source code must retain the above copyright -* notice, this list of conditions and the following disclaimer. -* * Redistributions in binary form must reproduce the above copyright -* notice, this list of conditions and the following disclaimer in the -* documentation and/or other materials provided with the distribution. -* * Neither the name of Advanced Micro Devices, Inc. nor the names of -* its contributors may be used to endorse or promote products derived -* from this software without specific prior written permission. -* -* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND -* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY -* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND -* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -* -* -***************************************************************************/ -#include <unistd.h> -#include <stdio.h> -#include <stdlib.h> -#include <fcntl.h> -#include <signal.h> -#include <errno.h> -#include <string.h> -#include <linux/rtc.h> - -#include <readline/readline.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <sys/ioctl.h> - -#define RTC_APP_VERSION "0.1" -static const char *rtc = "/dev/rtc0"; -static int rtc_fd; -static int signal_recvd; -static volatile int loop; - -char *show_prompt(void) -{ - return "$ "; -} - -void sighandler(int sig) -{ - printf("\n%s", show_prompt()); -} - -void periodicinthandler(int sig) -{ - int ret; - - fprintf(stderr, "\nAborting...\n"); - fflush(stderr); - - loop = 0; - - /* Turn off periodic interrupts */ - ret = ioctl(rtc_fd, RTC_PIE_OFF, 0); - if (ret == -1) - perror("RTC_PIE_OFF ioctl"); - - /* Restore original handler for SIGINT */ - signal(SIGINT, sighandler); -} - -void updateinthandler(int sig) -{ - int ret; - - fprintf(stderr, "\nAborting...\n"); - fflush(stderr); - - loop = 0; - - /* Turn off update interrupt */ - ret = ioctl(rtc_fd, RTC_UIE_OFF, 0); - if (ret == -1) - perror("RTC_UIE_OFF ioctl"); - - /* Restore original handler for SIGINT */ - signal(SIGINT, sighandler); -} - -void alarminthandler(int sig) -{ - struct rtc_wkalrm rtc_wakealarm; - int ret; - - signal_recvd = 1; - - ret = ioctl(rtc_fd, RTC_WKALM_RD, &rtc_wakealarm); - if (ret == -1) { - perror("RTC_WKALM_RD ioctl"); - return; - } - - /* disable alarm and set pending to 0 */ - rtc_wakealarm.enabled = 0; - rtc_wakealarm.pending = 0; - - ret = ioctl(rtc_fd, RTC_WKALM_SET, &rtc_wakealarm); - if (ret == -1) { - perror("RTC_WKALM_SET ioctl"); - return; - } - - /* Restore original handler for SIGINT */ - signal(SIGINT, sighandler); -} - -void show_license(void) -{ - printf("/*****************************************************************************\n" - "*\n" - "* Copyright (c) 2014, Advanced Micro Devices, Inc.\n" - "* All rights reserved.\n" - "*\n" - "* Redistribution and use in source and binary forms, with or without\n" - "* modification, are permitted provided that the following conditions are met:\n" - "* * Redistributions of source code must retain the above copyright\n" - "* notice, this list of conditions and the following disclaimer.\n" - "* * Redistributions in binary form must reproduce the above copyright\n" - "* notice, this list of conditions and the following disclaimer in the\n" - "* documentation and/or other materials provided with the distribution.\n" - "* * Neither the name of Advanced Micro Devices, Inc. nor the names of\n" - "* its contributors may be used to endorse or promote products derived\n" - "* from this software without specific prior written permission.\n" - "*\n" - "* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND\n" - "* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n" - "* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n" - "* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY\n" - "* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n" - "* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\n" - "* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\n" - "* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n" - "* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\n" - "* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n" - "*\n" - "*\n" - "***************************************************************************/\n"); -} - -void print_usage(void) -{ - printf("\nCommands Supported ->\n"); - printf(" updateinton : Turns on update interrupt\n"); - printf(" updateintoff : Turns off update interrupt\n"); - printf(" getrtctime : Reads the current RTC time\n"); - printf(" setrtctime <date>, <time> : Sets RTC date and time. Both date and time are mandatory\n"); - printf(" getwakealarm : Reads the current alarm setting\n"); - printf(" setwakealarm <date>, <time> : Sets the alarm date and time. Both date and time are mandatory\n"); - printf(" wakealarmoff : Turn off wakeup alarm set previously\n"); - printf(" getperiodicrate : Reads the current periodic interrupt rate\n"); - printf(" setperiodicrate <rate> : Sets the periodic interrupt rate\n"); - printf(" : The rate can take values from 2 to 8192 in steps of " - "power of 2\n"); - printf(" : 2, 4, 8, ..., 8192\n"); - printf(" periodicinton : Turns on periodic interrupt\n"); - printf(" periodicintoff : Turns off periodic interrupt\n"); - printf(" license : Displays the terms of LICENSE for this application\n"); - printf(" help : Displays help text\n"); - printf(" exit : Exits the application\n\n"); -} - -void parse_cmd(const char *cmdline) -{ - int ret, irqcount = 0; - unsigned long data; - struct rtc_time rtc_time; - struct rtc_wkalrm rtc_wakealarm; - - if ((cmdline == NULL) || (strncmp(cmdline, "exit", 4) == 0)) { - close(rtc_fd); - printf("\nExiting...\n"); - exit(EXIT_SUCCESS); - } else if (strncmp(cmdline, "help", 4) == 0) - print_usage(); - else if (strncmp(cmdline, "updateinton", 11) == 0) { - int i; - - ret = ioctl(rtc_fd, RTC_UIE_ON, 0); - if (ret == -1) { - if (errno == ENOTTY) - fprintf(stderr, "\n..Update interrupt not supported.\n"); - - perror("RTC_UIE_ON ioctl"); - return; - } - - fprintf(stderr, "Counting update interrupts by reading %s...Press Ctrl+C to abort\n", rtc); - fflush(stderr); - - /* Set default handler for SIGINT */ - signal(SIGINT, updateinthandler); - - i = loop = 1; - while (loop) { - struct timeval tv = {5, 0}; - fd_set readfds; - - FD_ZERO(&readfds); - FD_SET(rtc_fd, &readfds); - - ret = select(rtc_fd + 1, &readfds, NULL, NULL, &tv); - if (ret == -1) { - if (errno != EINTR) - perror("select"); - - /* Break the loop */ - loop = 0; - } else { - /* Non blocking read */ - ret = read(rtc_fd, &data, sizeof(unsigned long)); - if (ret == -1) { - perror("read"); - loop = 0; - } else { - fprintf(stderr, " %d", i++); - irqcount++; - } - } - } - - /* Turn off update interrupt */ - ret = ioctl(rtc_fd, RTC_UIE_OFF, 0); - if (ret == -1) - perror("RTC_UIE_OFF ioctl"); - } else if (strncmp(cmdline, "updateintoff", 12) == 0) { - fprintf(stderr, "Turning update interrupt off\n"); - fflush(stderr); - - ret = ioctl(rtc_fd, RTC_UIE_OFF, 0); - if (ret == -1) - perror("RTC_UIE_OFF ioctl"); - } else if (strncmp(cmdline, "getrtctime", 10) == 0) { - ret = ioctl(rtc_fd, RTC_RD_TIME, &rtc_time); - if (ret == -1) - perror("RTC_RD_TIME ioctl"); - else - fprintf(stderr, "\nCurrent RTC date and time is %02d/%02d/%04d, %02d:%02d:%02d\n", - rtc_time.tm_mon + 1, rtc_time.tm_mday, rtc_time.tm_year + 1900, - rtc_time.tm_hour, rtc_time.tm_min, rtc_time.tm_sec); - } else if (strncmp(cmdline, "setrtctime", 10) == 0) { - /* Point past the string and one whitespace */ - cmdline += 11; - ret = sscanf(cmdline, "%02d/%02d/%04d, %02d:%02d:%02d", &rtc_time.tm_mon, &rtc_time.tm_mday, - &rtc_time.tm_year, &rtc_time.tm_hour, &rtc_time.tm_min, &rtc_time.tm_sec); - - if (ret < 6) { - fprintf(stderr, "\nPlease check your input\n"); - return; - } - - /* months should be in the range 0 to 11 */ - rtc_time.tm_mon -= 1; - /* years should be number of years since 1900 */ - rtc_time.tm_year -= 1900; - ret = ioctl(rtc_fd, RTC_SET_TIME, &rtc_time); - if (ret == -1) - perror("RTC_SET_TIME ioctl"); - } else if (strncmp(cmdline, "getwakealarm", 12) == 0) { - ret = ioctl(rtc_fd, RTC_WKALM_RD, &rtc_wakealarm); - if (ret == -1) - perror("RTC_WKALM_RD ioctl"); - else { - fprintf(stderr, "\nRTC alarm is %s and %s\n", - rtc_wakealarm.enabled ? "enabled" : "disabled", - rtc_wakealarm.pending ? "pending": "not pending"); - fprintf(stderr, "\nCurrent alarm date and time is %02d/%02d/%04d, %02d:%02d:%02d\n", - rtc_wakealarm.time.tm_mon + 1, rtc_wakealarm.time.tm_mday, - rtc_wakealarm.time.tm_year + 1900, rtc_wakealarm.time.tm_hour, - rtc_wakealarm.time.tm_min, rtc_wakealarm.time.tm_sec); - } - } else if (strncmp(cmdline, "setwakealarm", 12) == 0) { - fprintf(stderr, "\nSetting alarm interrupt...Press Ctrl+C to abort\n\n"); - fflush(stderr); - - /* Point past the string and one whitespace */ - cmdline += 13; - ret = sscanf(cmdline, "%02d/%02d/%04d, %02d:%02d:%02d", - &rtc_wakealarm.time.tm_mon, &rtc_wakealarm.time.tm_mday, - &rtc_wakealarm.time.tm_year, &rtc_wakealarm.time.tm_hour, - &rtc_wakealarm.time.tm_min, &rtc_wakealarm.time.tm_sec); - - if (ret < 6) { - fprintf(stderr, "\nPlease check your input\n"); - return; - } - - /* months should be in the range 0 to 11 */ - rtc_wakealarm.time.tm_mon -= 1; - /* years should be number of years since 1900 */ - rtc_wakealarm.time.tm_year -= 1900; - - /* Enable wake alarm interrupt */ - rtc_wakealarm.enabled = 1; - - /* Set pending to 0 */ - rtc_wakealarm.pending = 1; - - /* Set handler for SIGINT */ - signal(SIGINT, alarminthandler); - - ret = ioctl(rtc_fd, RTC_WKALM_SET, &rtc_wakealarm); - if (ret == -1) { - perror("RTC_WKALM_SET ioctl"); - return; - } - - while (1) { - ret = ioctl(rtc_fd, RTC_WKALM_RD, &rtc_wakealarm); - if (ret == -1) { - perror("RTC_WKALM_RD ioctl"); - return; - } - - if (!rtc_wakealarm.enabled) { - /* We could be here either because we received the alarm - * interrupt, or the SIGINT handler was executed. To - * differentiate between the two cases, we use the flag. - */ - if (!signal_recvd) - fprintf(stderr, "\nReceived alarm interrupt\n"); - else - fprintf(stderr, "\nAborting...\n"); - - fflush(stderr); - break; - } - } - - /* In case we did not receive a signal, and we fall through */ - alarminthandler(SIGINT); - signal_recvd = 0; - } else if (strncmp(cmdline, "wakealarmoff", 12) == 0) { - fprintf(stderr, "Turning wake alarm interrupt off\n"); - fflush(stderr); - - ret = ioctl(rtc_fd, RTC_WKALM_RD, &rtc_wakealarm); - if (ret == -1) { - perror("RTC_WKALM_RD ioctl"); - return; - } - - /* Disable wake alarm */ - rtc_wakealarm.enabled = 0; - rtc_wakealarm.pending = 0; - ret = ioctl(rtc_fd, RTC_WKALM_SET, &rtc_wakealarm); - - if (ret == -1) - perror("RTC_WKALM_SET ioctl"); - } else if (strncmp(cmdline, "getperiodicrate", 15) == 0) { - unsigned long rate; - - ret = ioctl(rtc_fd, RTC_IRQP_READ, &rate); - if (ret == -1) { - if (errno == ENOTTY) - fprintf(stderr, "\nNo periodic interrupt support\n"); - else - perror("RTC_IRQP_READ ioctl"); - - return; - } - - fprintf(stderr, "\nPeriodic interrupt rate is %luHz\n", rate); - } else if (strncmp(cmdline, "setperiodicrate", 15) == 0) { - unsigned long rate; - - cmdline += 16; - - sscanf(cmdline, "%lu", &rate); - /* bounds check */ - if (rate < 2 || rate > 8192) { - fprintf(stderr, "\nInvalid rate specified\n"); - return; - } - - /* the rate should be a power of 2 */ - if (rate & (rate - 1)) { - fprintf(stderr, "\nInvalid rate. Only power of 2 allowed\n"); - return; - } - - ret = ioctl(rtc_fd, RTC_IRQP_SET, rate); - if (ret == -1) { - if (errno == ENOTTY) - fprintf(stderr, "\nCannot change periodic interrupt rate\n"); - else - perror("RTC_IRQP_SET ioctl"); - - return; - } - } else if (strncmp(cmdline, "periodicinton", 13) == 0) { - /* Set default handler for SIGINT */ - signal(SIGINT, periodicinthandler); - - ret = ioctl(rtc_fd, RTC_PIE_ON, 0); - if (ret == -1) { - perror("RTC_PIE_ON ioctl"); - return; - } - - fprintf(stderr, "\nChecking periodic interrupt rate...Press Ctrl+C to abort\n\n"); - fflush(stderr); - - loop = 1; - while (loop) { - struct timeval tv = {5, 0}; - fd_set readfds; - - FD_ZERO(&readfds); - FD_SET(rtc_fd, &readfds); - - ret = select(rtc_fd + 1, &readfds, NULL, NULL, &tv); - if (ret == -1) { - if (errno != EINTR) - perror("select"); - - /* Break the loop */ - loop = 0; - } else { - /* Non blocking read */ - ret = read(rtc_fd, &data, sizeof(unsigned long)); - if (ret == -1) { - perror("read"); - loop = 0; - } else { - fprintf(stderr, "."); - irqcount++; - } - } - } - - /* Turn off periodic interrupts */ - ret = ioctl(rtc_fd, RTC_PIE_OFF, 0); - if (ret == -1) - perror("RTC_PIE_OFF ioctl"); - } else if (strncmp(cmdline, "periodicintoff", 14) == 0) { - fprintf(stderr, "Turning periodic interrupt off\n"); - fflush(stderr); - - ret = ioctl(rtc_fd, RTC_PIE_OFF, 0); - if (ret == -1) - perror("RTC_PIE_OFF ioctl"); - } else if (strncmp(cmdline, "license", 7) == 0) { - show_license(); - } else { - printf("\nUnknown command\n"); - print_usage(); - } -} - -int main(int argc, char *argv[]) -{ - char *cmdline= NULL; - - printf("RTC sample application version: %s\n", RTC_APP_VERSION); - printf("Copyright (c) 2014, Advanced Micro Devices, Inc.\n" - "This sample application comes with ABSOLUTELY NO WARRANTY;\n" - "This is free software, and you are welcome to redistribute it\n" - "under certain conditions; type `license' for details.\n\n"); - - /* Handler for Ctrl+C */ - signal(SIGINT, sighandler); - - switch(argc) { - case 2: - rtc = argv[1]; - /* FALL THROUGH */ - case 1: - break; - default: - fprintf(stderr, "usage: rtc_test [rtcdev]\n"); - return 1; - } - - rtc_fd = open(rtc, O_RDONLY); - if (rtc_fd == -1) { - perror(rtc); - exit(errno); - } - - while (1) { - cmdline = readline(show_prompt()); - parse_cmd(cmdline); - /* Free the memory malloc'ed by readline */ - free(cmdline); - } - - /* Should never reach here */ - return 0; -} |