Interfacing RTC DS 1307 to LCD Using PSoC 5lp

Adhic902: The DS1307 works with the I2C component. But you have no program to address the DS1307.  The Psoc 5lp will work as a clock you just need the RTC component and a WCO crystal installed on your board. On pins P15.2 and P15.3. Check the parts list for the crystal part number. If you want an DS1307 clock program I will send you one. It is for the PSOC 4 however.

Here is the DS1307 Program it was originally designed with a joy stick to move the time around on your terminal screen.  The Joystick has been removed but the program works with the DS1307.

Adhic902:   You just go to the configure for the I2C on the topdesign sheet and Set int to UDB and UDB clock source internal. tolerance -25 to +5. this can be checked on the .Cydwr file under clocks and then look at the  I2C clock if you double click this it will open your I2C configure screen. That's all. If you want to program the time settings write the data to the memory locations in the RTC.h the I2C function would need to be modified to do this as it is a read routine for the time currently.  Consult the Data sheet for the DS1307 for more information.

I took your project unmodified, set the target device to Cy8C5868LXI-LP035 which is the device on my PSoC5 board.

The seconds displayed on LCD update normally.

Bob

I did not check I2C, I do not have got a DS1307. Your last error was "my current time still doesnt update" and that Ichecked, LCD did update.

I2C needs pullup resistors, do not forget.

Bob

Any reason why you use an exotic clock (32kHz) for your I2C?? I would suggest you to setup I2C with "Internal clock" and 100kbit

Bob

Adhic902: I looked at your 2nd program and it is not correct. You don't need the RTC component if you are using the DS1307.  Also you need the RTC.h file I sent you in the program I2C_SPI_Uart program to give you the settings for the memory of the DS1307.  Did you try this program? It works with the DS1307 I modified it to work with the PSOC 5lp. Currently I am unable to try it due to an issue with my DS1307 clock board.

Adhic902: Here is the program again.  Program is setup to work on PSOC 5lp board. Let me know how it works. You will need to add your display as this just works with a UART to a terminal program like PUTTY, Connect SDA to P12-1 and SCL to P12-0. UART is connected to P12-6 RX and P12-7 TX.  That's it should work just as is.

Adhic902: What DS1307 module are you using? Also are you using the Psoc 5 LP? The board doesn't have pull up resistors. So you need to add them.