My demo board is the SAMV71 Xplained Ultra kit with ATSAMV71Q21B processor.
Some details:
OS Version : Windows 7 Professional SP1
Java Version : Java (TM) 6 Update 33 (64-bit)
Target Device : ATSAMV71Q21B
Development Board: SAM V71 Xplained Ultra
Compiler License : ??
I can't see in PC Windows Device Manager, under any 'Controller USB', the device EDGB Debbuger.
I can see only EDGB Data Gateway.
Under 'Port (COM and LPT)' I can see EDGB Virtual COM Port.
Under 'Programme Installed' I can see Atmel Driver Files, Atmel LibUSB0 Driver (x64), Atmel Segger USB Drivers (501e) and Atmel WinUSB.
I programmed a simple code to access external SDRAM as follow :
#include <asf.h>
#define CONF_BOARD_SDRAMC /*MACRO to Enable the PINs for SDRAMC*/
int main (void)
{
sysclk_init();
board_init();
sdramc_init((sdramc_memory_dev_t *)&SDRAM_ISSI_IS42S16100E,
sysclk_get_cpu_hz());
/*Set the pointer to the SDRAMC address*/
uint32_t *pul = (uint32_t *)BOARD_SDRAM_ADDR;
/*set LED0 status to off*/
ioport_set_pin_level(LED0_GPIO,1);
/*Write the specific data to the SDRAMC space*/
pul[0] = 0xdeadbeef;
/*Read the data, if matched the specific data, turn on the LED0*/
if (pul[0] == 0xdeadbeef) {
ioport_set_pin_level(LED0_GPIO,0);
/*De-initialize the SDRAM controller.*/
/*Allow the SDRAMC entering to the sleep mode*/
sdramc_deinit();
return(0);
}
}
In addition I can program the processor with a simple example (sdram access), but I can't see the data written in the external memory viewwe/Windows through the embedded debugger device. They are 0x00 at base SDRAM_CS (0x70000000), all !!
The LED0 is turned on but I am no evidence in the memory location that I written the data through the Debugger Memory Windows.
Please Help me to resolve my trouble.
Thank you for answering
Pietro
