I'm using TM4C123GH6PZ in my new custom board,a RS232 chip max218 is connected to the mcu's uart0, the maximum baud rate of max218 is 120k. The question is:
When the mcu's flash is empty, the program image can be downloaded into the chip successfully by LM FLASH PROGRAMMER,but when I try to update the image in mcu's flash by LM FLASH PROGRAMMER after first program, LM FLASH PROGRAMMER will stop at "program 1%" or "program 2%",and a menu with "FAILED TO SEND PACKET" will pop up.I have observed the uart0's rx and tx siganal by an Oscilloscope, uart0's rx signal and tx signal only occurred during first few miliseconds. The download pin is PA6,and I have tested 2 boards, the problems are same, is the download baud rate faster than 120k?
