Hi, i Design a board with LPC4357, and i Program it. after about 30times programing i have a error in programing!!! Keil unknown my programmer!! i use ulink2 and keil Version4.72 now when i want program my board ,i get this error: in jtag mode: Jtag communication failure in SW mode: SWD communication failure
any body can offer me?
thank you in advance
Thanks Westonsupermare Pier for answer. I don't know that i modified wrong pins or mode! think last code that program on board it's, you can download from here: www.mediafire.com/.../Test_Program.zip
i don't have any mechanism that easily i can erase the chip! but i soldered three pull-down resistors on P1.1,P1.2,P2.8 and a pull-up resistor on P2.9, and P2.7 ,reset pins was pull-uped. and use this circuit : www.mediafire.com/.../program.jpg i want use USART3 and flash magic tool for erasing the chip! but flash magic cann't connect to my board!!