test programs for RTC functions

CMakeLists.txt

@@ -48,3 +48,30 @@ target_sources(paint PRIVATE
 target_link_libraries(paint PRIVATE
     rp6502
 )
+
+add_executable(clock)
+rp6502_executable(clock)
+target_sources(clock PRIVATE
+    src/clock.c
+)
+target_link_libraries(clock PRIVATE
+    rp6502
+)
+
+add_executable(set-time)
+rp6502_executable(set-time)
+target_sources(set-time PRIVATE
+    src/set-time.c
+)
+target_link_libraries(set-time PRIVATE
+    rp6502
+)
+
+add_executable(print-time)
+rp6502_executable(print-time)
+target_sources(print-time PRIVATE
+    src/print-time.c
+)
+target_link_libraries(print-time PRIVATE
+    rp6502
+)

src/clock.c

@@ -0,0 +1,86 @@
+#include <rp6502.h>
+#include <clock.h>
+#include <stdio.h>
+#include <errno.h>
+
+void test_time()
+{
+    time_t now;
+    unsigned long res;
+    res = time(&now);
+    if (res == -1)
+    {
+        printf("errno: %d\n", errno);
+        printf("_oserror: %d\n", _oserror);
+    } else 
+    {
+        printf("%s", ctime(&now));
+
+    }
+}
+
+void test_clock_getres()
+{
+    struct timespec resolution;
+    unsigned long res;
+    res = clock_getres(CLOCK_REALTIME, &resolution);
+    if (res == -1)
+    {
+        printf("errno: %d\n", errno);
+        printf("_oserror: %d\n", _oserror);
+    } else 
+    {
+        printf("Clock resolution: seconds: %lu, nanoseconds: %lu\n", resolution.tv_sec, resolution.tv_nsec);
+    }
+}
+
+void test_clock_gettime()
+{
+    struct timespec now;
+    unsigned long res;
+    struct tm time_struct;
+    char buf[80];
+    res = clock_gettime(CLOCK_REALTIME, &now);
+    if (res == -1)
+    {
+        printf("errno: %d\n", errno);
+        printf("_oserror: %d\n", _oserror);
+    } else 
+    {
+        time_struct = *localtime(&(now.tv_sec));
+        strftime(buf, sizeof(buf), "%a %m/%d/%Y %I:%M:%S %p", &time_struct);
+        printf("%s\n", buf);
+    }
+}
+
+void test_clock_settime()
+{
+    struct tm current_time;
+    struct timespec now;
+    current_time.tm_hour = 5;
+    current_time.tm_sec = 5;
+    current_time.tm_min = 5;
+    current_time.tm_mday = 29;
+    current_time.tm_mon = 10;
+    current_time.tm_year = 123;
+    current_time.tm_isdst = -1;
+    current_time.tm_wday = 0;
+    current_time.tm_yday = 0;
+    now.tv_sec = mktime(&current_time);
+    now.tv_nsec = 0;
+    clock_settime(CLOCK_REALTIME, &now);
+}
+
+void main()
+{
+    printf("test clock_gettime...\n");
+    test_clock_gettime();
+    printf("test clock_settime...\n");
+    test_clock_settime();
+    printf("test clock_getres...\n");
+    test_clock_getres();
+    printf("test clock_gettime...\n");
+    test_clock_gettime();
+    printf("test time...\n");
+    test_time();
+}

src/print-time.c

@@ -0,0 +1,23 @@
+#include <rp6502.h>
+#include <clock.h>
+#include <stdio.h>
+#include <errno.h>
+
+void main()
+{
+    time_t now;
+    unsigned long res;
+    struct tm time_struct;
+    char buf[80];
+    res = time(&now);
+    if (res == -1)
+    {
+        printf("errno: %d\n", errno);
+        printf("_oserror: %d\n", _oserror);
+    } else 
+    {
+        time_struct = *localtime(&now);
+        strftime(buf, sizeof(buf), "%a %m/%d/%Y %I:%M:%S %p", &time_struct);
+        printf("%s\n", buf);
+    }
+}

src/set-time.c

@@ -0,0 +1,72 @@
+#include <rp6502.h>
+#include <clock.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define IN_BUF_SIZE 8
+
+void main()
+{
+    struct tm current_time;
+    struct timespec now;
+    char in_buf[IN_BUF_SIZE];
+
+    current_time.tm_hour = -1;
+    current_time.tm_sec = -1;
+    current_time.tm_min = -1;
+    current_time.tm_mday = 0;
+    current_time.tm_mon = -1;
+    current_time.tm_year = -1;
+    current_time.tm_isdst = -1;
+    current_time.tm_wday = 0;
+    current_time.tm_yday = 0;
+
+
+    while (current_time.tm_mon < 0) {
+        puts("Enter month (1-12): ");
+        gets(in_buf);
+        current_time.tm_mon = atoi(in_buf) - 1;
+        if (current_time.tm_mon > 11)
+            current_time.tm_mon = -1;
+    }
+    while (!current_time.tm_mday) {
+        puts("Enter day (1-31): ");
+        gets(in_buf);
+        current_time.tm_mday = atoi(in_buf);
+        if (current_time.tm_mday > 31)
+            current_time.tm_mday = 0;
+    }
+    while (current_time.tm_year < 0) {
+        puts("Enter year: (1970-2038)");
+        gets(in_buf);
+        current_time.tm_year = atoi(in_buf) - 1900;
+        if (current_time.tm_year > 138 ||
+            current_time.tm_year < 70)
+            current_time.tm_year = -1;
+    }
+    puts("Local time:\n");
+    while (current_time.tm_hour < 0) {
+        puts("Enter hour (0-23): ");
+        gets(in_buf);
+        current_time.tm_hour = atoi(in_buf);
+        if (current_time.tm_hour > 23)
+            current_time.tm_hour = -1;
+    }
+    while (current_time.tm_min < 0) {
+        puts("Enter minute (0-59): ");
+        gets(in_buf);
+        current_time.tm_min = atoi(in_buf);
+        if (current_time.tm_min > 59)
+            current_time.tm_min = -1;
+    }
+    while (current_time.tm_sec < 0) {
+        puts("Enter second (0-59): ");
+        gets(in_buf);
+        current_time.tm_sec = atoi(in_buf);
+        if (current_time.tm_sec > 59)
+            current_time.tm_sec = -1;
+    }
+    now.tv_sec = mktime(&current_time);
+    now.tv_nsec = 0;
+    clock_settime(CLOCK_REALTIME, &now);
+}