Diff: main.cpp

Revision:

10:806cfec92eb6

Parent:

9:6a64b0207f72

Child:

11:2e514d955a2b

--- a/main.cpp	Mon Jan 16 09:38:03 2017 +0000
+++ b/main.cpp	Sat Jul 18 22:46:14 2020 +0000
@@ -2,19 +2,11 @@
  * mbed Application program
  *      RTC (inside STM32x CPU) test program
  *
- * Copyright (c) 2015,'16,'17 Kenji Arai / JH1PJL
- *  http://www.page.sannet.ne.jp/kenjia/index.html
- *  http://mbed.org/users/kenjiArai/
+ * Copyright (c) 2015,'16,'17,'20 Kenji Arai / JH1PJL
+ *  http://www7b.biglobe.ne.jp/~kenjia/
+ *  https://os.mbed.com/users/kenjiArai/
  *      Created: January   17th, 2015
- *      Revised: January   16th, 2017
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
- * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *      Revised: July      19th, 2020
  */
 
 /*  mbed library now suports RTC continuous operation at Reset & Power ON/OFF
@@ -23,7 +15,7 @@
     when user push a reset buttom or terninate a power.
     Even if user configures a back-up circuit for RTC, mbed board could not
     keep proper time.
-    I have checked mbed rev.133 and mbed-dev rev.155.
+    --> Right now, you don't worry thoese issue.
  */
 
 /*
@@ -34,6 +26,7 @@
     Nucleo-F446RE /  ok    /  ok     / ok (need following Back-up Circuit)
     Nucleo-F334R8 /  ok    /  ok     / ok (need following Back-up Circuit)
     Nucleo-L476RG /  ok    /  ok     / ok (need following Back-up Circuit)
+    DISCO-L45VG-IOT/ ok    /  ok     / ok (Need additional hardware)
     Nucleo-L152RE /  ok    /  ok     / no check (Need additional hardware)
     Nucleo-L073RZ /  ok    /  ok     / no check (Need additional hardware)
     Nucleo-L053R8 /  ok    /  ok     / no check (Need additional hardware)
@@ -41,6 +34,10 @@
     < Back-up circuit >
     CN7 VIN <- SBD <- 330 Ohm <- CR2032 + - -> CN7 GND
     Remove SB45 Zero Ohm resistor
+    
+    ----- PLEASE REFER FOLLOWS ----
+    https://os.mbed.com/users/kenjiArai/notebook/
+                        nucleo-series-rtc-control-under-power-onoff-and-re/
  */
 
 //  Include --------------------------------------------------------------------
@@ -53,47 +50,49 @@
 #define PUSHED_SW   0   // Active low
 #endif
 
+#define LONGLONGTIME    2147483647
+
 //  Object ---------------------------------------------------------------------
 DigitalIn userSW(USER_BUTTON);
-DigitalOut myled(LED1);         // Indicate the sampling period
-Serial pc(USBTX, USBRX);
+DigitalOut myled(LED1);                 // Indicate the sampling period
+static RawSerial pc(USBTX, USBRX);
 
 //  RAM ------------------------------------------------------------------------
 
 //  ROM / Constant data --------------------------------------------------------
-char *const msg0 = "Is a time correct? If no, please hit any key. ";
-char *const msg1 = "<Push USER SW then enter sleep mode> ";
-char *const msg2 = "\r\nEnter Standby Mode, please push RESET to wake-up\r\n";
+const char *const msg0 = "Is a time correct? If no, please hit any key. ";
+const char *const msg1 = "<Push USER SW then enter the Standby mode> ";
+const char *const msg2 = "\r\nEntered the standby mode. ";
+const char *const msg3 = "Please push USER BUTTON to wake-up(Reset).\r\n";
 
 //  Function prototypes --------------------------------------------------------
 static void time_enter_mode(void);
 static void chk_and_set_time(char *ptr);
-static void goto_standby(void);
-static int xatoi (char **str, unsigned long *res);
-static void get_line (char *buff, int len);
+static int32_t xatoi (char **str, int32_t *res);
+static void get_line (char *buff, int32_t len);
+static void usr_sw_irq(void);
+extern void print_revision(void);
 
 //------------------------------------------------------------------------------
 //  Control Program
 //------------------------------------------------------------------------------
 int main()
 {
-    char buf[64];               // data buffer for text
+    char buf[64];       // data buffer for text
     time_t seconds;
     uint8_t wait_counter = 0;
 
-    wait(2.0);
     pc.printf("\r\n\r\nTest Nucleo RTC Function\r\n");
+    print_revision();
     myled = !myled;
-    // waiting for Initial screen
-    myled = 1;
-    wait(1.0);
+    thread_sleep_for(500);
     myled = !myled;
-    wait(1.0);
-    while(1) {
+    thread_sleep_for(500);
+    while(true) {
         seconds = time(NULL);
         strftime(buf, 50, " %B %d,'%y, %H:%M:%S\r\n", localtime(&seconds));
         pc.printf("[Time] %s", buf);
-        pc.printf(msg0);
+        pc.printf("%s", msg0);
         pc.printf("%s\r", msg1);
         wait_counter = 0;
         while (seconds == time(NULL)){
@@ -101,13 +100,22 @@
                 buf[0] = pc.getc();  // dummy read
                 time_enter_mode();
             }
-            if (userSW == PUSHED_SW){
-                pc.printf(msg2);
-                wait(1.0);
+            if (userSW == PUSHED_SW){   // goto sleep
+                while (userSW == PUSHED_SW){
+                    thread_sleep_for(10);
+                }
+                thread_sleep_for(10);
+                pc.printf("%s%s", msg2, msg3);
                 myled = 0;
-                goto_standby();
+                InterruptIn usr_sw(USER_BUTTON);
+                thread_sleep_for(1000);
+                DigitalIn dmy0(LED1);
+                DigitalIn dmy1(USBTX);
+                DigitalIn dmy2(USBRX);
+                usr_sw.fall(&usr_sw_irq);
+                thread_sleep_for(LONGLONGTIME);
             }
-            wait(0.05);
+            thread_sleep_for(50);
             if (++wait_counter > (2000 / 50)){
                 break;
             }
@@ -121,14 +129,21 @@
     }
 }
 
-void time_enter_mode(void)
+//  Interrupt for wake up
+static void usr_sw_irq(void)
+{
+    system_reset(); // restart from RESET condition
+}
+
+//  Time adjustment
+static void time_enter_mode(void)
 {
     char *ptr;
     char linebuf[64];
 
     pc.printf("\r\nSet time into RTC\r\n");
-    pc.printf(" e.g. >17 1 16 20 55 23 -> January 16th,'17, 20:55:23\r\n");
-    pc.printf(" If time is fine, just hit enter\r\n");
+    pc.printf(" e.g. >20 7 7 20 21 22 -> July 7,'20, 20:21:22\r\n");
+    pc.printf(" If time is fine, just hit enter key\r\n");
     pc.putc('>');
     ptr = linebuf;
     get_line(ptr, sizeof(linebuf));
@@ -136,16 +151,11 @@
     chk_and_set_time(ptr);
 }
 
-void goto_standby(void)
+//  Change string -> integer
+static int32_t xatoi(char **str, int32_t *res)
 {
-    deepsleep();   // Not Standby Mode but Deep Sleep Mode
-}
-
-//  Change string -> integer
-int xatoi (char **str, unsigned long *res)
-{
-    unsigned long val;
-    unsigned char c, radix, s = 0;
+    uint32_t val;
+    uint8_t c, radix, s = 0;
 
     while ((c = **str) == ' ') (*str)++;
     if (c == '-') {
@@ -197,10 +207,10 @@
 }
 
 //  Get key input data
-void get_line (char *buff, int len)
+static void get_line(char *buff, int32_t len)
 {
     char c;
-    int idx = 0;
+    int32_t idx = 0;
 
     for (;;) {
         c = pc.getc();
@@ -223,9 +233,10 @@
     pc.putc('\n');
 }
 
-void chk_and_set_time(char *ptr)
+//  Check key input strings and set time
+static void chk_and_set_time(char *ptr)
 {
-    unsigned long p1;
+    int32_t p1;
     struct tm t;
     time_t seconds;
 
@@ -252,17 +263,13 @@
     }
     seconds = mktime(&t);
     set_time(seconds);
-    // Show Time with several example
     // ex.1
     pc.printf(
         "Date: %04d/%02d/%02d, %02d:%02d:%02d\r\n",
         t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec
     );
 #if 0
-    time_t seconds;
-    char buf[40];
-
-    seconds = mktime(&t);
+    // Show Time with several example
     // ex.2
     strftime(buf, 40, "%x %X", localtime(&seconds));
     pc.printf("Date: %s\r\n", buf);