4 Replies Latest reply on Mar 30, 2014 6:50 PM by ViDv_264506

    SW_Tx_UART Version 1.10 Troubles




      If all others fails => read the Datasheet carefully. 


      The SW_Tx_UART supports PSoC 3, PSoC 4 and PSoC 5LP.


      Small notice on the page 7 of the SW_Tx_UART Version 1.10 Datasheet 


      .... is  IMPORTANT ....


      "Software Transmit UART component requires to have Instruction Cache to be enabled for PSoC 3 and PSoC 5LP. This could be done in PSoC Creator project Design-Wide Resources editor on the System tab. By default, this option is enabled".


      If the Instruction Cache is disabled the SW_Tx_UART works but erroneously. 


      Behaviour - using 115200 Baudrate and 24MHz BusClock same number of characters transmitted, but all characters NONREPRODUCIBLE - RANDOMLY substituted.


      NO WARNING in PSoC Creator 3.0 compilation/linking, NO USABLE INFORMATION from the logic analyzer.




      May be this helps.