Shahar Ben-David

MC9S08JM32 UART Bootloader problem

Discussion created by Shahar Ben-David on Jan 28, 2009
Latest reply on Jan 29, 2009 by Jaime Rodriguez
I've ported Freescale's UART bootloader PC application (AN2295) to run on windows CE.
After burning the MCU with the bootloader firmware I am able to load the user application with the ported PC utility and everything works fine. When trying to load the application for the second time I get errors from the calibration function (the baud rate calibration function).
I am puzzled why this works during the first upload but fails to load the application a second time.
Any ideas on what can cause this?