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RTC Sample program
Fork of Rtc_Ds1307_Sample by
Revision 3:4bf56b558a71, committed 2016-06-12
- Comitter:
- manojn
- Date:
- Sun Jun 12 11:17:26 2016 +0000
- Parent:
- 2:3be003301107
- Commit message:
- RTC DS 1307 sample program with red and write operations
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Wed Jun 26 21:07:13 2013 +0000 +++ b/main.cpp Sun Jun 12 11:17:26 2016 +0000 @@ -1,87 +1,126 @@ #include "mbed.h" -#include "Rtc_Ds1307.h" -//RtcCls rtc(p28, p27, p29, true); -Rtc_Ds1307 rtc(p28, p27); +const int addr=0xD0; +unsigned char var1,var2,var3,var4,var5,var6; +int i; Serial pc(USBTX, USBRX, "pc"); -char buffer[128]; -int readptr = 0; +I2C i2c(p28, p27); -int main() { - char c; - Rtc_Ds1307::Time_rtc tm = {}; +void read_rtc_sec() +{ + i2c.start(); + i2c.write(0xD0); + i2c.write(0x00); + + i2c.start(); + i2c.write(0xD1); + var1=i2c.read(0x00); + + var2=var1; + var1=var1&0x0f; + var2=var2>>4; + i2c.stop(); + + } + +void read_rtc_min() +{ + i2c.start(); + i2c.write(0xD0); + i2c.write(0x01); + + i2c.start(); + i2c.write(0xD1); + var3=i2c.read(0x00); - while(1) { - pc.printf("*************************************\n"); - pc.printf("* Menu for RTC Test : *\n"); - pc.printf("* read - reads the clock *\n"); - pc.printf("* start - start the clock *\n"); - pc.printf("* stop - stop the clock *\n"); - pc.printf("* write - write the clock *\n"); - pc.printf("* ena - enable Square wave output *\n"); - pc.printf("* dis - disable square wave outp. *\n"); - pc.printf("*************************************\n"); + var4=var3; + var3=var3&0x0f; + var4=var4>>4; + + i2c.stop(); + } + + +void read_rtc_hrs() +{ + i2c.start(); + i2c.write(0xD0); + i2c.write(0x02); - while( (c = pc.getc()) != '\n') { - buffer[readptr++] = c; - } - buffer[readptr++] = 0; - if (strncmp(buffer, "read", 4) == 0) { - // perform read - pc.printf("Performing read operation\n"); - if (rtc.getTime(tm) ) { - pc.printf("The current time is : %02d:%02d:%02d\n", tm.hour, tm.min, tm.sec); - pc.printf("The current date is : %s, %02d/%02d/%04d\n", rtc.weekdayToString(tm.wday), tm.mon, tm.date, tm.year); - } - - } - else if (strncmp(buffer, "write", 5) == 0) { - // perform write - pc.printf("Enter the date (date 0..31)"); - pc.scanf("%d", &tm.date); - pc.printf("Enter the date (month 1..12)"); - pc.scanf("%d", &tm.mon); - pc.printf("Enter the date (year)"); - pc.scanf("%d", &tm.year); - pc.printf("Enter the time (hours 0..23)"); - pc.scanf("%d", &tm.hour); - pc.printf("Enter the time (minutes 0..59)"); - pc.scanf("%d", &tm.min); - pc.printf("Enter the time (seconds 0..59)"); - pc.scanf("%d", &tm.sec); - pc.printf("Performing write operation\n"); - - while(pc.readable()) - pc.getc(); - rtc.setTime(tm, false, false); - } - else if (strncmp(buffer, "start", 5) == 0) { - // start - pc.printf("Performing start operation\n"); - rtc.startClock(); - } - else if (strncmp(buffer, "stop", 4) == 0) { - // stop - pc.printf("Performing stop operation\n"); - rtc.stopClock(); - } - else if (strncmp(buffer, "ena", 3) == 0) { - int rs; - pc.printf("Please specify the frequency : [0 = 1Hz, 1 = 4.096kHz, 2 = 8.192kHz, 3 = 32.768kHz] "); - scanf("%d", &rs); - pc.printf("Enabling the output with %d option\n", rs); - rtc.setSquareWaveOutput(true, (Rtc_Ds1307::SqwRateSelect_t)rs); - } - else if (strncmp(buffer, "dis", 3) == 0) { - pc.printf("Disableing square wave output\n"); - rtc.setSquareWaveOutput(false, Rtc_Ds1307::RS1Hz); - } - else { - pc.printf("syntax error\n"); - } - readptr = 0; - pc.printf("\n\n\n"); + i2c.start(); + i2c.write(0xD1); + var5=i2c.read(0x00); + + var6=var5; + var5=var5&0x0f; + var6=var6>>4; + var6=var6&0x01; + + i2c.stop(); } + +void write_rtc_min(unsigned char mn) +{ + i2c.start(); + i2c.write(addr); + i2c.write(0x01); + i2c.write(mn); //write min + i2c.stop(); + } + + void write_rtc_sec(unsigned char sc) + { + i2c.start(); + i2c.write(addr); + i2c.write(0x00); + i2c.write(sc); // write sec + i2c.stop(); + } + + +void write_rtc_hrs(unsigned char hr) +{ + i2c.start(); + i2c.write(addr); + i2c.write(0x02); + i2c.write(hr); //write hrs + i2c.stop(); + + } + + +int main() +{ + +char sec=0x45; // second field value +char min=0x59; // min field value +char hrs=0x52; // hrs field value + + + i2c.frequency(100000); + i2c.start(); + wait(1); + + i2c.start(); + write_rtc_min(min); + write_rtc_sec(sec); + write_rtc_hrs(hrs); + + + + while(1) + { + read_rtc_hrs(); + read_rtc_min(); + read_rtc_sec(); + + pc.printf("Current time = (%d%d:%d%d:%d%d)\n\r",var6,var5,var4,var3,var2,var1); + + wait(1); + + } + + } \ No newline at end of file