![](/media/cache/profiles/f0fcf351df4eb6786e9bb6fc4e2dee02.jpg.50x50_q85.jpg)
Check RTC LSE(External Xtal, 32.768kHz) mode
Please refer follow links.
My notebook
http://developer.mbed.org/users/kenjiArai/notebook/nucleo-series-clock-structure-and-xtal-oscillation/
Q&A for RTC Xtal
http://developer.mbed.org/questions/4531/RTC-External-Crystal-Nucleo/
Revision 4:56a0cbad89b0, committed 2015-05-16
- Comitter:
- kenjiArai
- Date:
- Sat May 16 23:38:13 2015 +0000
- Parent:
- 3:921a09e41147
- Commit message:
- STM team has changed start-up time but still has a problem. Simplified a checking procedure.
Changed in this revision
diff -r 921a09e41147 -r 56a0cbad89b0 CheckRTC.lib --- a/CheckRTC.lib Sat Nov 01 01:48:56 2014 +0000 +++ b/CheckRTC.lib Sat May 16 23:38:13 2015 +0000 @@ -1,1 +1,1 @@ -http://developer.mbed.org/users/kenjiArai/code/CheckRTC/#921a188e61c0 +http://developer.mbed.org/users/kenjiArai/code/CheckRTC/#babcde30190d
diff -r 921a09e41147 -r 56a0cbad89b0 TextLCD.lib --- a/TextLCD.lib Sat Nov 01 01:48:56 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/kenjiArai/code/TextLCD/#986538f94abe
diff -r 921a09e41147 -r 56a0cbad89b0 main.cpp --- a/main.cpp Sat Nov 01 01:48:56 2014 +0000 +++ b/main.cpp Sat May 16 23:38:13 2015 +0000 @@ -1,11 +1,11 @@ /* * mbed Application program * - * Copyright (c) 2010-2014 Kenji Arai / JH1PJL + * Copyright (c) 2010-2015 Kenji Arai / JH1PJL * http://www.page.sannet.ne.jp/kenjia/index.html * http://mbed.org/users/kenjiArai/ * Created: March 27th, 2010 - * Revised: November 1st, 2014 + * Revised: May 16th, 2015 * * 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 @@ -14,24 +14,13 @@ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ -//#define USE_TEXT_LCD - -#define CHECK_RTC -//#define SET_RTC - // Include --------------------------------------------------------------------------------------- #include "mbed.h" -#ifdef USE_TEXT_LCD -#include "TextLCD.h" -#endif #include "CheckRTC.h" // Object ---------------------------------------------------------------------------------------- Serial pc(USBTX, USBRX); DigitalOut myled1(LED1); // Assign LED1 output port -#ifdef USE_TEXT_LCD -TextLCD lcd(p22, p21, p8, p7, p6, p5,TextLCD::LCD40x2); // rs, e, d4-d7 -#endif Timer t; // RAM ------------------------------------------------------------------------------------------- @@ -39,10 +28,9 @@ // ROM / Constant data --------------------------------------------------------------------------- // Function prototypes --------------------------------------------------------------------------- +int set_time_and_check_time(void); void msg_hlp (void); void chk_and_set_time(char *ptr); -void put_rn (void); -void put_r (void); int xatoi (char **str, int32_t *res); void get_line (char *buff, int len); @@ -50,19 +38,10 @@ #define BAUD(x) pc.baud(x) #define GETC(x) pc.getc(x) #define PUTC(x) pc.putc(x) +#define PUTS(x) pc.puts(x) #define PRINTF(...) pc.printf(__VA_ARGS__) #define READABLE(x) pc.readable(x) -#ifdef USE_TEXT_LCD -#define L_CLS(x) lcd.cls(x) -#define L_LOC(x,y) lcd.locate(0, 0); -#define L_PRINTF(...) lcd.printf(__VA_ARGS__) -#else -#define L_CLS(x) {;} -#define L_LOC(x,y) {;} -#define L_PRINTF(...) {;} -#endif - #define STYLE1 //#define STYLE2 //#define STYLE_COM @@ -70,96 +49,109 @@ //------------------------------------------------------------------------------------------------- // Control Program //------------------------------------------------------------------------------------------------- -#if defined(CHECK_RTC) #if defined(TARGET_NUCLEO_F401RE) || defined(TARGET_NUCLEO_F411RE) || defined(TARGET_NUCLEO_L152RE) int main() { - while(true) - { - while (!READABLE()){ - PRINTF("Please hit any key to start measure\r"); - } - PRINTF("\r\nSelect RTC clock source\r\n"); - t.reset(); - t.start(); - CheckRTC(); - t.stop(); - PRINTF("Use special function (extend time-out)\r\n"); - PRINTF("Start-up time was %f sec. (Time-out setting:%f sec.)\r\n", - t.read(), (float)(float)TIMEOUT/1000); - switch (get_RTCSEL()) { + uint32_t state; + + while(true) { + PUTS("\r\n\r\nCurrent Nucleo mbed Power-on sequence does NOT consider "); + PUTS("External Xtal start-up.\r\n"); + PUTS("Setting time is 5 seconds (improved) "); + PUTS("but sometimes External Xtal 32.768KHz (LSE) does NOT work!\r\n"); + PUTS("Current setting: "); + state = get_RTCSEL(); + switch (state) { case 0: // no clock - PRINTF("No clock"); + PUTS("No clock"); break; case 1: // LSE - PRINTF("Use LSE"); + PUTS("Use LSE(external Xtal)=32.768KHz"); break; case 2: // LSI - PRINTF("Use LSI"); + PUTS("Use LSI(internal RC/Low speed), RC = 17 to 47, typ.32KHz"); break; case 3: // HSE - PRINTF("Use HSE"); + PUTS("Use HSE(with prescaler)"); break; default: // Not come here - PRINTF("?"); + PRINTF("No clock"); break; } - PRINTF("\r\n"); - CheckRTC(); - if (get_RTCSEL() == 2) { - PRINTF("Use LSI again"); + PUTS("\r\n\r\n"); + if (state == 1) { + PUTS("LSE is using! No addtional effort but just in case please try follows.\r\n"); + } else { + PUTS("Please hit any key to use RTC external clock.\r\n"); + while (!READABLE()) { + wait(0.2); + } + PRINTF("\r\nStart measure\r\n"); + t.reset(); + t.start(); + CheckRTC(); + t.stop(); + PRINTF("Start-up time was %f sec. (Time-out setting:%f sec.)\r\n", + t.read(), (float)(float)TIMEOUT/1000); + PUTS("\r\n"); + state = get_RTCSEL(); + switch (state) { + case 0: // no clock + PRINTF("No clock"); + break; + case 1: // LSE + PRINTF("Use LSE"); + break; + case 2: // LSI + PRINTF("Use LSI"); + break; + case 3: // HSE + PRINTF("Use HSE"); + break; + default: // Not come here + PRINTF("?"); + break; + } + PRINTF("\r\n"); + CheckRTC(); + if (state == 1) { + PUTS("Looks okay right now but always okay or not?!\r\n"); + } } - PRINTF("\r\nRepeat again? [y/n]\r\n"); - PRINTF(" If yes, please pusch [RESET] buttom.\r\n"); - PRINTF(" recomend to remove USB connecter then re-plug it.\r\n"); - PRINTF(" If no, please hit any key.\r\n"); - if (GETC()){ - break; - } + PUTS("If you would like to masure again,"); + PUTS("Please remove JP6/IDO on the mbed board then re-plug it again!.\r\n\r\n"); + set_time_and_check_time(); } - PRINTF("next\r\n"); - CheckRTC(); } #else #warning "Cannot use this function. Please comment out #define CHECK_RTC and use #define SET_RTC #endif -#elif defined(SET_RTC) // defined(CHECK_RTC) -int main() +int set_time_and_check_time() { char *ptr; char linebuf[64]; char buf[40]; time_t seconds; - CheckRTC(); - L_CLS(); - L_LOC(0, 0); - L_LOC(0, 0); // 1st line top - // 1234567890123456789012345678901234567890 - L_PRINTF(" Waiting for time adjustment via com "); - put_rn(); + if (READABLE()) { + GETC(); + } seconds = time(NULL); - PRINTF("Current time is"); - put_rn(); + PRINTF("Current time is "); #ifdef STYLE_COM - PRINTF("Time: %s", ctime(&seconds)); + PRINTF("Time: %s\r\n", ctime(&seconds)); #else strftime(buf,40, "%I:%M:%S %p (%Y/%m/%d)", localtime(&seconds)); - PRINTF("Time: %s", buf); + PRINTF("Time: %s\r\n", buf); #endif - put_rn(); - PRINTF("Is it correct time?"); - put_rn(); - PRINTF("YES -> please enter '/'"); - put_rn(); - PRINTF("NO -> please enter t yy mm dd hh mm ss <ret>"); - put_rn(); - PRINTF("e.g. >t 14 11 1 8 5 15<ret>"); - put_rn(); + PRINTF("Is it correct time?\r\n"); + PRINTF("YES -> please enter '/'\r\n"); + PRINTF("NO -> please enter t yy mm dd hh mm ss <ret> "); + PRINTF("e.g. >t 15 5 17 10 5 15<ret>\r\n"); for (;;) { - put_r(); + PUTC('\r'); PUTC('>'); ptr = linebuf; get_line(ptr, sizeof(linebuf)); @@ -168,16 +160,15 @@ // check and set RTC //--------------------------------------------------------------------------------- case 't' : - put_r(); + PUTC('\r'); chk_and_set_time(ptr); break; //--------------------------------------------------------------------------------- // check and set RTC //--------------------------------------------------------------------------------- case '/' : - put_r(); - PRINTF("Current Time -> Plese see LCD also"); - put_rn(); + PUTC('\r'); + PRINTF("Current Time -> Plese see LCD also\r\n"); while (1) { if (READABLE()) { break; @@ -185,25 +176,19 @@ while ( seconds == time(NULL)) ; seconds = time(NULL); myled1 = !myled1; - L_CLS(); - L_LOC(0, 0); // 1st line top - L_PRINTF("It is %d sec since Jan.1,1970\n", seconds); - L_LOC(0, 1); // 2nd line top #ifdef STYLE1 - // 27 Mar 2010 13:24:00 + // 17 May 2015 13:24:00 strftime(buf,40, "%x %X ", localtime(&seconds)); #endif #ifdef STYLE2 - // 13:24:00 PM (2010/03/27) + // 13:24:00 PM (2015/05/17) strftime(buf,40, "%I:%M:%S %p (%Y/%m/%d)", localtime(&seconds)); #endif - L_PRINTF("Time = %s", buf); #ifdef STYLE_COM - PRINTF("Time: %s", ctime(&seconds)); + PRINTF("Time: %s\r\n", ctime(&seconds)); #else - PRINTF("Time: %s", buf); + PRINTF("Time: %s\r\n", buf); #endif - put_rn(); } break; //--------------------------------------------------------------------------------- @@ -211,37 +196,19 @@ //--------------------------------------------------------------------------------- case '?' : default : - put_r(); + PUTC('\r'); msg_hlp(); break; } } } -#endif // defined(SET_RTC) - // Help Massage void msg_hlp (void) { - PRINTF("t - Check and set RTC"); - put_rn(); - PRINTF("/ - Show time every second (Esc -> hit any key)"); - put_rn(); - PRINTF("? - Help"); - put_rn(); -} - -// Put \r\n -void put_rn (void) -{ - PUTC('\r'); - PUTC('\n'); -} - -// Put \r -void put_r (void) -{ - PUTC('\r'); + PUTS("t - Check and set RTC\r\n"); + PUTS("/ - Show time every second (Esc -> hit any key)\r\n"); + PUTS("? - Help\r\n"); } // Change string -> number @@ -361,13 +328,11 @@ PRINTF("Min:%d ",p1); xatoi( &ptr, &p1 ); t.tm_sec = (uint8_t)p1; - PRINTF("Sec: %d",p1); - put_rn(); + PRINTF("Sec: %d\r\n",p1); seconds = mktime(&t); set_time(seconds); } seconds = time(NULL); strftime(buf, 40, "%B %d,'%y, %H:%M:%S", localtime(&seconds)); - PRINTF("Time: %s", buf); - put_rn(); + PRINTF("Time: %s\r\n", buf); }
diff -r 921a09e41147 -r 56a0cbad89b0 mbed.bld --- a/mbed.bld Sat Nov 01 01:48:56 2014 +0000 +++ b/mbed.bld Sat May 16 23:38:13 2015 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/031413cf7a89 \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/dbbf35b96557 \ No newline at end of file