📄 main.c
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/*-----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support - ROUSSET -
*-----------------------------------------------------------------------------
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*----------------------------------------------------------------------------
* File Name : main.c
* Object :
* Creation : JPP
*----------------------------------------------------------------------------
*/
#include "project.h"
#include "led.h"
#include "pmc.h"
#include "dbgu.h"
char message[80];
unsigned int MasterClock;
//*----------------------------------------------------------------------------
//* \fn Read_Pll_Registe
//* \brief Print PLL information
//*----------------------------------------------------------------------------
unsigned int Read_Pll_Registe( unsigned int pll)
{
unsigned int div,mul;
unsigned int clock = 0;
sprintf (message,"PMC_PLL:0x%08X:",pll); AT91F_DBGU_Printk(message);
div = pll & 0x000000FF;
sprintf (message," DIV:%2d ",div); AT91F_DBGU_Printk(message);
mul = (pll & 0x03FF0000)>>16;
sprintf (message,"MUL:%4d ",mul); AT91F_DBGU_Printk(message);
if (div !=0 ) {
clock = AT91B_MAIN_OSC / div;
clock = clock * (mul+1);
sprintf (message,"PLL :%9d",clock); AT91F_DBGU_Printk(message);
}
AT91F_DBGU_Printk("\n\r");
return (clock);
}
//*----------------------------------------------------------------------------
//* \fn Get_MCK_info
//* \brief Print Main PMC information
//*----------------------------------------------------------------------------
unsigned int Get_MCK_info (void)
{
unsigned int at_reg,clock,mdiv,Processor_Clock,Processor_Clock_pres;
unsigned int Clock_PllA=0,Clock_PllB=0;
// Read PLLA Value
AT91F_DBGU_Printk("PLLA ");
Clock_PllA = Read_Pll_Registe(*AT91C_PMC_PLLAR);
AT91F_DBGU_Printk("PLLB ");
// Read PLLB Value
Clock_PllB = Read_Pll_Registe(*AT91C_PMC_PLLBR);
at_reg = *AT91C_PMC_MCKR;
sprintf (message,"AT91C_PMC_MCKR:(0x%08X)0x%08X: ",AT91C_PMC_MCKR,at_reg); AT91F_DBGU_Printk(message);
mdiv= (at_reg >> 8) * 2;
sprintf (message," MDIV:%d",mdiv); AT91F_DBGU_Printk(message);
if (mdiv == 0) mdiv =1;
Processor_Clock_pres= (at_reg & AT91C_PMC_PRES) >> 2;
if ((at_reg & AT91C_PMC_PRES) == AT91C_PMC_PRES_CLK ) Processor_Clock_pres= 1;
if ((at_reg & AT91C_PMC_PRES) == AT91C_PMC_PRES_CLK_2 ) Processor_Clock_pres= 2;
if ((at_reg & AT91C_PMC_PRES) == AT91C_PMC_PRES_CLK_4 ) Processor_Clock_pres= 4;
if ((at_reg & AT91C_PMC_PRES) == AT91C_PMC_PRES_CLK_8 ) Processor_Clock_pres= 8;
if ((at_reg & AT91C_PMC_PRES) == AT91C_PMC_PRES_CLK_16) Processor_Clock_pres= 16;
if ((at_reg & AT91C_PMC_PRES) == AT91C_PMC_PRES_CLK_32) Processor_Clock_pres= 32;
if ((at_reg & AT91C_PMC_PRES) == AT91C_PMC_PRES_CLK_64) Processor_Clock_pres= 64;
sprintf (message," Processor Clock prescaler:%d\n\r",Processor_Clock_pres); AT91F_DBGU_Printk(message);
if ((at_reg & AT91C_PMC_CSS) == AT91C_PMC_CSS_PLLB_CLK ) {
AT91F_DBGU_Printk("PLLB");
Processor_Clock = Clock_PllB /Processor_Clock_pres;
}
if ((at_reg & AT91C_PMC_CSS) == AT91C_PMC_CSS_PLLA_CLK ) {
AT91F_DBGU_Printk("PLLA");
Processor_Clock = Clock_PllA /Processor_Clock_pres;
}
if ((at_reg & AT91C_PMC_CSS) == AT91C_PMC_CSS_MAIN_CLK ) {
AT91F_DBGU_Printk("Main");
Processor_Clock = AT91B_MAIN_OSC /Processor_Clock_pres;
}
if ((at_reg & AT91C_PMC_CSS) == AT91C_PMC_CSS_SLOW_CLK ) {
AT91F_DBGU_Printk("Slow");
Processor_Clock = AT91B_SLOW_OSC /Processor_Clock_pres;
}
sprintf (message,"\n\r Processor Clock:%9d\n\r",Processor_Clock); AT91F_DBGU_Printk(message);
sprintf (message," Master Clock :%9d\n\r",Processor_Clock / mdiv); AT91F_DBGU_Printk(message);
at_reg = *AT91C_CKGR_MCFR;
if ((at_reg & AT91C_CKGR_MAINRDY) == AT91C_CKGR_MAINRDY) {
at_reg &= AT91C_CKGR_MAINF;
clock = (at_reg *AT91B_SLOW_OSC) / 16;
sprintf (message," Ocilator (CKGR):%9d\n\r",clock ); AT91F_DBGU_Printk(message);
}
return (Processor_Clock / mdiv);
}
//*----------------------------------------------------------------------------
//* \fn AT91F_Write_add
//* \brief
//*----------------------------------------------------------------------------
void AT91F_Write_add(void)
{
unsigned int value;
unsigned int *add;
AT91F_DBGU_Printk("Address ?");
AT91F_DBGU_scanf("%X",&value);
add = (unsigned int *) value;
sprintf (message,"old 0x%08X:0x%08X\n\r",add,*add); AT91F_DBGU_Printk(message);
AT91F_DBGU_scanf("%X",&value);
*add=value;
sprintf (message,"New 0x%08X:0x%08X\n\r",add,*add); AT91F_DBGU_Printk(message);
}
//*----------------------------------------------------------------------------
//* \fn menu
//* \brief Debug menu
//*----------------------------------------------------------------------------
void menu(char val)
{
unsigned int value;
AT91F_PIO_InvertLed(AT91B_POWERLED);
switch (val) {
case '0': // Info
MasterClock= Get_MCK_info();
AT91F_DBGU_Printk("\n\r");
value = AT91F_PMC_GetProcessorClock(AT91C_BASE_PMC,AT91C_BASE_CKGR,AT91B_SLOW_OSC);
sprintf (message,"Processor clock AT91: %d\n\r",value); AT91F_DBGU_Printk(message);
AT91F_DBGU_Printk("\n\r");
break;
case '1':
sprintf (message,"old 0x%08X:0x%08X\n\r",AT91C_PMC_PLLAR,*AT91C_PMC_PLLAR); AT91F_DBGU_Printk(message);
AT91F_DBGU_scanf("%X",&value);
AT91F_PMC_Change_PPLA(value);
sprintf (message,"New 0x%08X:0x%08X\n\r",AT91C_PMC_PLLAR,*AT91C_PMC_PLLAR); AT91F_DBGU_Printk(message);
break;
case '2':
sprintf (message,"old 0x%08X:0x%08X\n\r",AT91C_PMC_PLLBR,*AT91C_PMC_PLLBR); AT91F_DBGU_Printk(message);
AT91F_DBGU_scanf("%X",&value);
AT91F_PMC_Change_PPLB(value);
sprintf (message,"New 0x%08X:0x%08X\n\r",AT91C_PMC_PLLBR,*AT91C_PMC_PLLBR); AT91F_DBGU_Printk(message);
break;
case '3':
MasterClock = AT91F_PMC_SwitchMasterClock(AT91C_PMC_CSS_PLLB_CLK);
AT91F_DBGU_Change_Speed(MasterClock);
break;
case '4':
MasterClock = AT91F_PMC_SwitchMasterClock(AT91C_PMC_CSS_PLLA_CLK);
AT91F_DBGU_Change_Speed(MasterClock);
break;
case '5':
MasterClock = AT91F_PMC_SwitchMasterClock(AT91C_PMC_CSS_MAIN_CLK);
AT91F_DBGU_Change_Speed(MasterClock);
break;
case '6':
MasterClock = AT91F_PMC_SwitchMasterClock(AT91C_PMC_CSS_SLOW_CLK);
break;
case '7':
AT91F_Write_add();
break;
default:
break;
}// End Switch
AT91F_DBGU_Printk("Done\n\r");
}
//*----------------------------------------------------------------------------
//* Function Name : main
//* Object : Main function
//* Input Parameters : none
//* Output Parameters : True
//*----------------------------------------------------------------------------*/
int main(void)
{
char val;
unsigned int value;
// Init DBGU
AT91F_DBGU_Init();
// Print to consol
AT91F_DBGU_Printk("\n\r==============================\n\r");
AT91F_DBGU_Printk("AT91SAM9260 Data Flash example\n\r");
AT91F_DBGU_Printk("==============================\n\r");
AT91F_PMC_Change_PPLB(0x00ACBF20);
// Init Led AND Switch
AT91F_PIO_Init();
MasterClock = Get_MCK_info();
value = AT91F_PMC_GetProcessorClock(AT91C_BASE_PMC,AT91C_BASE_CKGR,AT91B_SLOW_OSC);
sprintf (message,"Processor clock: %d\n\r",value); AT91F_DBGU_Printk(message);
AT91F_DBGU_Printk("\n\r0) Info\n\r1) Write PLLA\n\r2) Write PLLB\n\r3) To PLLB \n\r4) To PLLA \n\r5) To Main\n\r6) Slow \n\rEnter:");
for (;;)
{
if (AT91F_DBGU_Get(&val)) {
menu(val);
}
AT91F_PIO_InvertLed(AT91B_LED1);
if (MasterClock >= 50000)
AT91F_PIO_Wait(AT91B_MASTER_CLOCK/1000);
else // For slow clock
AT91F_PIO_Wait(500);
}
}
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