Posted on May 17, 2011 at 12:07 There are 3 possible causes to your problem: 1 - Some defect in your battery backup circuit (or in the battery itself). 2 - Your main supply is RFI sensitive. 3 - A software problem, like the one suggested by Phaze...
Posted on May 17, 2011 at 12:07 What is your while loop? if you are waiting for the TI flag to go high, you wil wait for the eternity. It goes high AFTER sending SBUF. At the beginning, you have to set it high yourself (SCON = 0X52). Good luck, an...
Posted on May 17, 2011 at 12:07The UART1 interrupt vector is supposed to be 4BH according to the datasheet (table 16 at page 41). In fact it is 23H, the same as UART0. This has been checked on the DK3300-ELCD board. Is it a PDF typo, or a silicon bu...
Posted on May 17, 2011 at 12:03Quote:What is stated in the Doc (for mode 1) is an Interrupt be will asserted at the beginning of the stop bit transition. It appears that if TI is set my by application while a byte in the transition buffer the interr...
