Flash area Jtag couldn't download on?

[jd kim]

Posted on June 12, 2018 at 04:15

Hi. 

Recently I try to build bootloader. So I need to study about full programmable flash area.

I'm using Jtag and IAR for debug, and STM32F103C8T6 for MCU, which has medium density flash area 0x0800 0000 ~ 0x0801 FFFF. I know that I can download code on specific flash address by redefining linker file.

I succeed to implant a const variable in 0x0801FFFE using __no_init directive and access ether, but I can't download code using JTAG from 0x0801 0000 ~ 0x0801 FFFF.

I thought that It is JTAG failure so I buy another model of JTAG for test, but It isn't working too

is there any limitation for Jtag or MCU for downloading area? 

anyone who solve this?

#flash #bootloader #debug #download

[Tesla DeLorean]

Posted on June 12, 2018 at 05:04

The STM32F103C8T6 is a 64KB FLASH, 20KB RAM in a 48-pin QFP