Segger J-Link - Page 388

388 CHAPTER 15 Device specifics
J-Link / J-Trace (UM08001) ©
2004-2017 SEGGER Microcontroller GmbH & Co. KG
Samples
GDB Sample
# connect to the J-Link gdb server
target remote localhost:2331
monitor flash device = AT91SAM7S256
monitor flash download = 1
monitor flash breakpoints = 1
# Set JTAG speed to 30 kHz
monitor endian little
monitor speed 30
# Reset the target
monitor reset 8
monitor sleep 10
# Perform peripheral reset
monitor long 0xFFFFFD00 = 0xA5000004
monitor sleep 10
# Disable watchdog
monitor long 0xFFFFFD44 = 0x00008000
monitor sleep 10
# Initialize PLL
monitor long 0xFFFFFC20 = 0x00000601
monitor sleep 10
monitor long 0xFFFFFC2C = 0x00480a0e
monitor sleep 10
monitor long 0xFFFFFC30 = 0x00000007
monitor sleep 10
monitor long 0xFFFFFF60 = 0x00480100
monitor sleep 100
monitor speed 12000
break main
load
continue
IAR Sample
/*******************************************************************
*
* _Init()
*/
_Init() {
__emulatorSpeed(30000); // Set JTAG speed to 30 kHz
__writeMemory32(0xA5000004,0xFFFFFD00,"Memory"); // Perform peripheral reset
__sleep(20000);
__writeMemory32(0x00008000,0xFFFFFD44,"Memory"); // Disable Watchdog
__sleep(20000);
__writeMemory32(0x00000601,0xFFFFFC20,"Memory"); // PLL
__sleep(20000);
__writeMemory32(0x10191c05,0xFFFFFC2C,"Memory"); // PLL
__sleep(20000);
__writeMemory32(0x00000007,0xFFFFFC30,"Memory"); // PLL
__sleep(20000);
__writeMemory32(0x002f0100,0xFFFFFF60,"Memory"); // Set 1 wait state for
__sleep(20000); // flash (2 cycles)
__emulatorSpeed(12000000); // Use full JTAG speed
}
/*******************************************************************
*
* execUserReset()
*/
execUserReset() {
__message "execUserReset()";
_Init();
}
/*******************************************************************
*
* execUserPreload()
*/
execUserPreload() {
__message "execUserPreload()";
_Init();
}