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ezkitutilities.c
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ezkitutilities.c
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/*********************************************************************************
Copyright(c) 2005 Analog Devices, Inc. All Rights Reserved.
This software is proprietary and confidential. By using this software you agree
to the terms of the associated Analog Devices License Agreement.
$RCSfile: ezkitutilities.c,v $
$Revision: 1.1 $
$Date: 2007/03/28 18:48:38 $
Description: EZ-Kit utility routines. This file contains a collection
of functions that automate typical EZ-Kit functionality,
including control of LEDs and push buttons.
*********************************************************************************/
/*********************************************************************
Include files
*********************************************************************/
#include <services/services.h> // system service includes
#include <sysreg.h> // system config definitions
#include "ezkitutilities.h" // EZ-Kit utility definitions
/*********************************************************************
flash addresses for BF-533 EZ-Kit
*********************************************************************/
#if defined(__ADSP_EDINBURGH__) // the Edinburgh EZ-Kit uses a flash for ports
#define pFlashA_PortA_In ((volatile unsigned char *)0x20270000) // address of flash A port A input data register
#define pFlashA_PortA_Out ((volatile unsigned char *)0x20270004) // address of flash A port A output data register
#define pFlashA_PortA_Dir ((volatile unsigned char *)0x20270006) // address of flash A port A direction register
#define pFlashA_PortB_In ((volatile unsigned char *)0x20270001) // address of flash A port B input data register
#define pFlashA_PortB_Out ((volatile unsigned char *)0x20270005) // address of flash A port B output data register
#define pFlashA_PortB_Dir ((volatile unsigned char *)0x20270007) // address of flash A port B direction register
#define pFlashB_PortA_In ((volatile unsigned char *)0x202E0000) // address of flash B port A input data register
#define pFlashB_PortA_Out ((volatile unsigned char *)0x202E0004) // address of flash B port A output data register
#define pFlashB_PortA_Dir ((volatile unsigned char *)0x202E0006) // address of flash B port A direction register
#define pFlashB_PortB_In ((volatile unsigned char *)0x202E0001) // address of flash B port B input data register
#define pFlashB_PortB_Out ((volatile unsigned char *)0x202E0005) // address of flash B port B output data register
#define pFlashB_PortB_Dir ((volatile unsigned char *)0x202E0007) // address of flash B port B direction register
#endif
//REMOVE WHEN DRIVERS ARE ADDED
/*********************************************************************
Miscellaneous defines
*********************************************************************/
#if defined(__ADSP_EDINBURGH__) // ADSP-BF533 EZ-Kit specific info
#define RST_7183 (0x8) //decoder reset bit #3 in flashA portA
#define PPICLK_ADV7183_SELECT (0x10) //decoder clock to PPI bit #4 in flashA portA
#define ADV7183_OE_MASK (0x4) //ADV7183 /OE = PF2
#define ADV7183_OE (0) //Index into Codec flag handler array
#define RST_7171 (0x4) // encoder reset
#endif
#if defined(__ADSP_TETON__)
#define ADV7183_RESET (13) //decoder reset bit
#define ADV7183_OE (2) //ADV7183 /OE = PF2
#define ADV7183_Reset_Delay 0x04000000 // For delay after reset
#define ADV7183_Lock 0x0000ffff // For startup locktime delay
#define ADV7179_RESET (14) // encoder reset bit
#endif
/*********************************************************************
LED/Button to pf mappings
*********************************************************************/
#if defined(__ADSP_EDINBURGH__) // ADSP-BF533 EZ-Kit mappings
ADI_FLAG_ID ezButtonToFlag[] = {
ADI_FLAG_PF8, // button 0
ADI_FLAG_PF9, // button 1
ADI_FLAG_PF10, // button 2
ADI_FLAG_PF11 // button 3
};
ADI_FLAG_ID ezLEDToFlag[] = { // (not used on Edinburgh but needed as placeholder)
ADI_FLAG_PF0, // led 0
ADI_FLAG_PF0, // led 1
ADI_FLAG_PF0, // led 2
ADI_FLAG_PF0, // led 3
ADI_FLAG_PF0, // led 4
ADI_FLAG_PF0 // led 5
};
#endif
/*********************************************************************/
#if defined(__ADSP_STIRLING__) // ADSP-BF538 EZ-Kit mappings
ADI_FLAG_ID ezButtonToFlag[] = {
ADI_FLAG_PF0, // button 0
ADI_FLAG_PF1, // button 1
ADI_FLAG_PF2, // button 2
ADI_FLAG_PF3 // button 3
};
ADI_FLAG_ID ezLEDToFlag[] = {
ADI_FLAG_PC4, // led 0
ADI_FLAG_PC5, // led 1
ADI_FLAG_PC6, // led 2
ADI_FLAG_PC7, // led 3
ADI_FLAG_PC8, // led 4
ADI_FLAG_PC9 // led 5
};
#endif
#if defined(__ADSP_BRAEMAR__) // ADSP-BF537 EZ-Kit mappings
ADI_FLAG_ID ezButtonToFlag[] = {
ADI_FLAG_PF2, // button 0
ADI_FLAG_PF3, // button 1
ADI_FLAG_PF4, // button 2
ADI_FLAG_PF5 // button 3
};
ADI_FLAG_ID ezLEDToFlag[] = {
ADI_FLAG_PF6, // led 0
ADI_FLAG_PF7, // led 1
ADI_FLAG_PF8, // led 2
ADI_FLAG_PF9, // led 3
ADI_FLAG_PF10, // led 4
ADI_FLAG_PF11 // led 5
};
#endif
#if defined(__ADSP_TETON__) // ADSP-BF561 EZ-Kit mappings
ADI_FLAG_ID ezButtonToFlag[] = {
ADI_FLAG_PF5, // button 0
ADI_FLAG_PF6, // button 1
ADI_FLAG_PF7, // button 2
ADI_FLAG_PF8 // button 3
};
ADI_FLAG_ID ezLEDToFlag[] = {
ADI_FLAG_PF40, // led 0
ADI_FLAG_PF41, // led 1
ADI_FLAG_PF42, // led 2
ADI_FLAG_PF43, // led 3
ADI_FLAG_PF44, // led 4
ADI_FLAG_PF45, // led 5
ADI_FLAG_PF46, // led 6
ADI_FLAG_PF47, // led 7
ADI_FLAG_PF32, // led 8
ADI_FLAG_PF33, // led 9
ADI_FLAG_PF34, // led 10
ADI_FLAG_PF35, // led 11
ADI_FLAG_PF36, // led 12
ADI_FLAG_PF37, // led 13
ADI_FLAG_PF38, // led 14
ADI_FLAG_PF39 // led 15
};
#endif
#if defined(__ADSP_MOAB__) // ADSP-BF54x EZ-Kit mappings
ADI_FLAG_ID ezButtonToFlag[] = {
ADI_FLAG_PB8, // button 1
ADI_FLAG_PB9, // button 2
ADI_FLAG_PB10, // button 3
ADI_FLAG_PB11 // button 4
};
ADI_FLAG_ID ezLEDToFlag[] = {
ADI_FLAG_PG6, // led 1
ADI_FLAG_PG7, // led 2
ADI_FLAG_PG8, // led 3
ADI_FLAG_PG9, // led 4
ADI_FLAG_PG10, // led 5
ADI_FLAG_PG11 // led 6
};
#endif
/*********************************************************************
LED control
*********************************************************************/
static u32 LEDDisplay; // bit field representing the LED display
static u32 LEDEnables; // bit field representing the enabled LEDs
/*********************************************************************
function prototypes
*********************************************************************/
static void ezInitPower(u32 NumCores);
/*********************************************************************
Function: ezInit
Description: Initializes the EZ-Kit. Specifically:
- configures async memories
- configures flash (where applicable)
- configures power to 600/120
*********************************************************************/
void ezInit(u32 NumCores)
{
// configure async memory
#if defined(__ADSP_EDINBURGH__) // ADSP-BF533 EZ-Kit specific info
*pEBIU_AMBCTL0 = 0x7bb07bb0; // Write access time = 7 cycles, read access time = 11 cycles, no ARDY
*pEBIU_AMBCTL1 = 0x7bb07bb0; // Hold time = 2 cycles, setup time = 3 cycles, transition time = 4 cycles
*pEBIU_AMGCTL = 0x00FF;
#endif
// configure flash
#if defined(__ADSP_EDINBURGH__) // ADSP-BF533 EZ-Kit specific info
*pFlashA_PortA_Out = 0; // resets port A to initial value
*pFlashA_PortA_Dir = 0xFF; // configure everything on port A as outputs
*pFlashA_PortB_Out = 0; // resets port B to initial value
*pFlashA_PortB_Dir = 0x3f; // configure everything on port B as outputs
#endif
#if defined(__ADSPBF561__)
*pEBIU_AMBCTL0 = 0x7bb07bb0; // Write access time = 7 cycles, read access time = 11 cycles, no ARDY
*pEBIU_AMBCTL1 = 0x13d07bb0; // bank 3 for NETCHIP device
*pEBIU_AMGCTL = 0x00FF;
#endif
// configure power
ezInitPower(NumCores);
}
/*********************************************************************
Function: ezInitPower
Description: Initializes and sets Power managwmentSDRAM parameters on the EZ-Kit.
(Replaces ezConfigurePLL & ezConfigureSDRAM )
Processor clock set to max in each case
*********************************************************************/
#define DO_NOT_CHANGE_MMR_SETTINGS 0
static void ezInitPower(u32 NumCores)
{
ADI_EBIU_RESULT EBIUResult;
ADI_PWR_RESULT PWRResult;
#if defined (__ADSP_TETON__)
ADI_PWR_COMMAND_PAIR ezkit_power[3];
#endif
// It is important that the EBIU module is configured before Power module
// so that changes to the clock frequencies are correctly reflected in the
// SDRAM settings
//Initializes the EBIU module
ADI_EBIU_COMMAND_PAIR ezkit_sdram[] = {
#if defined (__ADSP_EDINBURGH__)
{ ADI_EBIU_CMD_SET_EZKIT, (void*)ADI_EBIU_EZKIT_BF533_REV1_7 },
/* { ADI_EBIU_CMD_SET_EZKIT, (void*)ADI_EBIU_EZKIT_BF533 }, for EZ-Kit Rev 1.6 and lower */
#elif defined(__ADSP_BRAEMAR__)
{ ADI_EBIU_CMD_SET_EZKIT, (void*)ADI_EBIU_EZKIT_BF537 },
#elif defined (__ADSP_TETON__)
{ ADI_EBIU_CMD_SET_EZKIT, (void*)ADI_EBIU_EZKIT_BF561 },
#elif defined(__ADSP_STIRLING__)
{ ADI_EBIU_CMD_SET_EZKIT, (void*)ADI_EBIU_EZKIT_BF538 },
#endif
{ ADI_EBIU_CMD_END, 0}
};
EBIUResult = adi_ebiu_Init( ezkit_sdram, DO_NOT_CHANGE_MMR_SETTINGS );
if ((EBIUResult != ADI_EBIU_RESULT_SUCCESS) && (EBIUResult != ADI_EBIU_RESULT_CALL_IGNORED)) {
ezErrorCheck(EBIUResult);
}
//Initializes the power management module
#if defined (__ADSP_TETON__)
u8 ic=0;
ezkit_power[ic].kind = ADI_PWR_CMD_SET_EZKIT;
ezkit_power[ic].value = (void*)ADI_PWR_EZKIT_BF561_500MHZ;
// for Teton (BF561) there is a choice between auto sync if NumCores >1 or
// no synchronization - essential for single-core apps.
if (NumCores>1) {
ic++;
// value field is superfluos for this command
ezkit_power[ic].kind = ADI_PWR_CMD_SET_AUTO_SYNC_ENABLED;
}
ic++;
// value field is superfluos for this command
ezkit_power[ic].kind = ADI_PWR_CMD_END;
#else // otherwise - Edinburgh Braemar ot STirling
ADI_PWR_COMMAND_PAIR ezkit_power[] = {
#if defined (__ADSP_EDINBURGH__)
{ ADI_PWR_CMD_SET_EZKIT, (void*)ADI_PWR_EZKIT_BF533_600MHZ },
#elif defined(__ADSP_BRAEMAR__)
{ ADI_PWR_CMD_SET_EZKIT, (void*)ADI_PWR_EZKIT_BF537_600MHZ },
#elif defined(__ADSP_STIRLING__)
{ ADI_PWR_CMD_SET_EZKIT, (void*)ADI_PWR_EZKIT_BF538_500MHZ },
#endif
{ ADI_PWR_CMD_END, 0}
};
#endif
PWRResult = adi_pwr_Init( ezkit_power );
if ((PWRResult != ADI_PWR_RESULT_SUCCESS) && (PWRResult != ADI_PWR_RESULT_CALL_IGNORED)) {
ezErrorCheck(PWRResult);
}
// Crank up speed to max possible
#if !defined (__ADSP_TETON__) || defined(__600_MHZ_TETON__)
ezErrorCheck( adi_pwr_SetFreq( 0, 0, ADI_PWR_DF_NONE ) );
#else
// Again, this is safe, on boards with ADSP-BF561SKBC500X rev 0.2
// There are issues with some BF561 EZ-kits for V >=1.2V
ezErrorCheck( adi_pwr_SetMaxFreqForVolt( ADI_PWR_VLEV_115 ) );
#endif
}
/*********************************************************************
Function: ezInitLEDs
Description: Enables an LED for use
*********************************************************************/
void ezInitLED(u32 LED) // enables an LED
{
// make sure the LED is valid
if (LED >= EZ_NUM_LEDS) return;
// set the enable bit
LEDEnables |= (1 << LED);
// configure the flag for output
#if defined(__ADSP_BRAEMAR__) || defined (__ADSP_TETON__) || defined (__ADSP_STIRLING__) || defined (__ADSP_MOAB__)
adi_flag_Open(ezLEDToFlag[LED]);
adi_flag_SetDirection(ezLEDToFlag[LED], ADI_FLAG_DIRECTION_OUTPUT);
#endif
// dim the LED
ezTurnOffLED(LED);
}
/*********************************************************************
Function: ezTurnOnLED
Description: Lights an LED
*********************************************************************/
void ezTurnOnLED(u32 LED) // lights an LED
{
// update
ezSetDisplay(LEDDisplay | (1 << LED));
}
/*********************************************************************
Function: ezTurnOffLED
Description: Dims an LED
*********************************************************************/
void ezTurnOffLED(u32 LED) // dims an LED
{
// update
ezSetDisplay(LEDDisplay & ~(1 << LED));
}
/*********************************************************************
Function: ezToggleLED
Description: Toggles an LED
*********************************************************************/
void ezToggleLED(u32 LED) // toggles an LED
{
// update
ezSetDisplay(LEDDisplay ^ (1 << LED));
}
/*********************************************************************
Function: ezTurnOnAllLEDs
Description: Lights all LEDs
*********************************************************************/
void ezTurnOnAllLEDs(void) // lights all LEDs
{
// update
ezSetDisplay(0xffff);
}
/*********************************************************************
Function: ezTurnOffAllLEDs
Description: Dims all LEDs
*********************************************************************/
void ezTurnOffAllLEDs(void) // dims all LEDs
{
// update
ezSetDisplay(0);
}
/*********************************************************************
Function: ezToggleAllLEDs
Description: Toggles all LEDs
*********************************************************************/
void ezToggleAllLEDs(void) // toggles all LEDs
{
// update
ezSetDisplay(~LEDDisplay);
}
/*********************************************************************
Function: ezIsLEDon
Description: Senses if an LED is lit
*********************************************************************/
u32 ezIsLEDOn(u32 LED) // senses if an LED is lit
{
// return
return (LEDDisplay & (1 << LED)?TRUE:FALSE);
}
/*********************************************************************
Function: ezCycleLEDs
Description: Cycles LEDs
*********************************************************************/
void ezCycleLEDs(void) // cycles all LEDs
{
static u32 CycleDisplay;
// insure at least 1 LED is enabled
if (LEDEnables == 0) return;
// calculate the pattern
do {
CycleDisplay <<= 1;
if (CycleDisplay == 0) CycleDisplay = 1;
} while ((CycleDisplay & LEDEnables) == 0);
// update
ezSetDisplay(CycleDisplay);
}
/*********************************************************************
Function: ezGetDisplay
Description: Gets the display pattern
*********************************************************************/
u32 ezGetDisplay(void) // gets the pattern
{
// get it
return (LEDDisplay);
}
/*********************************************************************
Function: ezSetDisplay
Description: Sets the display pattern
*********************************************************************/
void ezSetDisplay(u32 Display) // sets the display
{
u32 i;
u32 Mask;
// update the display
LEDDisplay = Display & LEDEnables;
// FOR (each LED)
for (i = 0, Mask = 1; i < EZ_NUM_LEDS; i++, Mask <<= 1) {
// IF (the LED should be lit)
if (LEDDisplay & Mask) {
// light it
#if defined(__ADSP_EDINBURGH__)
*pFlashA_PortB_Out |= Mask;
#endif
#if defined(__ADSP_BRAEMAR__) || defined (__ADSP_TETON__) || defined (__ADSP_STIRLING__) || defined (__ADSP_MOAB__)
adi_flag_Set(ezLEDToFlag[i]);
#endif
// ELSE
} else if (LEDEnables & Mask) {
// dim it
#if defined(__ADSP_EDINBURGH__)
*pFlashA_PortB_Out &= ~Mask;
#endif
#if defined(__ADSP_BRAEMAR__) || defined (__ADSP_TETON__) || defined (__ADSP_STIRLING__) || defined (__ADSP_MOAB__)
adi_flag_Clear(ezLEDToFlag[i]);
#endif
// ENDIF
}
// ENDFOR
}
}
/*********************************************************************
Function: ezInitButton
Description: Enables a button for use
*********************************************************************/
void ezInitButton(u32 Button) // enables a button
{
// make sure the button is valid
if (Button >= EZ_NUM_BUTTONS) return;
// open the flag and make it an input
adi_flag_Open(ezButtonToFlag[Button]);
adi_flag_SetDirection(ezButtonToFlag[Button], ADI_FLAG_DIRECTION_INPUT);
}
/*********************************************************************
Function: ezIsButtonPushed
Description: Returns TRUE if a button has been pushed, FALSE otherwise.
*********************************************************************/
u32 ezIsButtonPushed(u32 Button) // returns TRUE if button is pushed, FALSE otherwise
{
u32 Value;
// make sure the button is valid
if (Button >= EZ_NUM_BUTTONS) return (FALSE);
// sense it
adi_flag_Sense(ezButtonToFlag[Button], &Value);
// return
return (Value);
}
/*********************************************************************
Function: ezClearButton
Description: Clears a push button latch. This must be called to
reset the latch for the push button, if a button has
been pressed.
*********************************************************************/
void ezClearButton(u32 Button) // clears a button latch
{
volatile int i;
// make sure the button is valid
if (Button >= EZ_NUM_BUTTONS) return;
// delay to allow for any debounce to clear
ezDelay(10);
// clear the flag corresponding to the button
adi_flag_Clear(ezButtonToFlag[Button]);
}
/*********************************************************************
Function: ezDelay
Description: Delays for approximately 1 msec when running at 600 MHz
*********************************************************************/
void ezDelay(u32 msec) {
volatile u32 i,j;
// value of 0x3000000 is about 1 sec so 0xc49b is about 1msec
for (j = 0; j < msec; j++) {
for (i = 0; i < 0xc49b; i++) ;
}
}
/*********************************************************************
Function: ezErrorCheck
Description: This function is intended to be used as a means to
quickly determine if a function has returned a non-zero
(hence an error) return code. All driver and system
services functions return a value of zero for success and
a non-zero value when a failure occurs. This function
makes all LEDs glow dimly when a non-zero value is
passed to it.
*********************************************************************/
void ezErrorCheck(u32 Result) // lights all LEDS and spins on nonzero value
{
while (Result != 0) {
ezCycleLEDs();
}
}
/*********************************************************************
Function: ezResetad1836
Description: This function is intended to be used to reset the AD1836 audio codec
*********************************************************************/
void ezReset1836(void)
{
int i;
static unsigned char data;
#if defined (__ADSP_EDINBURGH__)
*pFlashA_PortA_Dir = data = 0x01;
#if defined (__ADSP_EDINBURGH_AVEXTNDR__) || defined (__ADSPBF533_AVEXTNDR__)
*pFlashA_PortA_Dir = data = 0x40;
#endif
*pFlashA_PortA_Out = 0x00; //write to Port A to reset AD1836
asm("nop; nop; nop;"); //wait at least 5 ns in reset
*pFlashA_PortA_Out = data; //write to Port A to enable AD1836
#endif //__ADSP_EDINBURGH__
#if defined (__ADSP_BRAEMAR__)
#elif defined (__ADSP_BRAEMAR___AVEXTNDR__) || defined (__ADSPBF537_AVEXTNDR__)
SlaveSelect = 6; //SPI Slave Select connected to 1836
adi_flag_Open(ADI_FLAG_PF6);
adi_flag_SetDirection(ADI_FLAG_PF6, ADI_FLAG_DIRECTION_OUTPUT);
adi_flag_Clear(ADI_FLAG_PF6); //Clear PF6 to reset the AD1836
asm("nop; nop; nop;"); //assert reset for at least 5 ns
adi_flag_Set(ADI_FLAG_PF6); //Set PF6 to reset the AD1836
#endif //__ADSP_BRAEMAR__
#if defined (__ADSP_TETON__)
adi_flag_Open(ADI_FLAG_PF15);
adi_flag_SetDirection(ADI_FLAG_PF15, ADI_FLAG_DIRECTION_OUTPUT);
adi_flag_Clear(ADI_FLAG_PF15); //Clear PF6 to reset the AD1836
asm("nop; nop; nop;"); //Assert reset for at least 5 ns
adi_flag_Set(ADI_FLAG_PF15); //Set PF6 to reset the AD1836
#endif //__ADSP_TETON__
//Now wait 4500 MCLK periods (MCLK = 12.288 MHz) to recover from reset
for (i=0; i<220000; i++) { asm("nop;"); } //Prevents compiler from optimizing
}
/*********************************************************************
Function: ezEnableVideoDecoder
Description: Connects up the bus, sets up the video clocking and
enables the AD7183.
*********************************************************************/
void ezEnableVideoDecoder(void) // connects bus, sets up video clock and enables the 7183
{
#if defined(__ADSP_EDINBURGH__) // ADSP-BF533 EZ-Kit specific info
#define ADV7183_OE_FLAG ADI_FLAG_PF2
unsigned short tempReg;
//The GPIOs of the flash are linked to the ADV7183 reset pin as well as to the
//switch that drives the PPI clock. De-assert the ADV7183 reset and link the ADV7183
//Clock "LLC1" to the Blackfin PPI clock input. See EZ-KIT schematics for more details.
tempReg = *pFlashA_PortA_Out;
tempReg &= ~RST_7171; // disable 7171
*pFlashA_PortA_Out = tempReg | RST_7183 | PPICLK_ADV7183_SELECT;
//Setup the Blackfin PF registers
#if defined(__ADSP_EDINBURGH__) && (__SILICON_REVISION__==0xffff || __SILICON_REVISION__==0x1)
tempReg = *pFIO_INEN;
*pFIO_INEN = tempReg | ADV7183_OE_MASK;
#endif
// open PF2 and PF13
adi_flag_Open(ADI_FLAG_PF2);
adi_flag_Open(ADI_FLAG_PF13);
//Blackfin PF2 pin must be set as output
adi_flag_SetDirection(ADI_FLAG_PF2, ADI_FLAG_DIRECTION_OUTPUT);
//Set the Blackfin pin PF2 to output enable the ADV7183 data bus
adi_flag_Clear(ADI_FLAG_PF2);
#endif // Edinburgh
#if defined(__ADSP_TETON__)
volatile long delay_time;
//Blackfin PF2 pin must be set as output
adi_flag_SetDirection(ADI_FLAG_PF2, ADI_FLAG_DIRECTION_OUTPUT);
//Blackfin PF13 pin must be set as output
adi_flag_SetDirection(ADI_FLAG_PF13, ADI_FLAG_DIRECTION_OUTPUT);
ssync();
// set bit PF2 to disable ADV7183 outputs
adi_flag_Set(ADI_FLAG_PF2);
ssync();
// clear bit PF13 to reset ADV7183
adi_flag_Clear(ADI_FLAG_PF13);
ssync();
// set bit PF13 to re-enable ADV7183
adi_flag_Set(ADI_FLAG_PF13);
ssync();
for (delay_time = 0; delay_time < ADV7183_Reset_Delay; delay_time++)
asm("nop;");
// clear bit to enable ADV7183 outputs
adi_flag_Clear(ADI_FLAG_PF2);
ssync();
for (delay_time = 0; delay_time < ADV7183_Lock; delay_time++)
asm("nop;");
#endif // Teton
}
/*********************************************************************
Function: ezEnableVideoEncoder
Description: Enables the AD7171 or AD7179
*********************************************************************/
void ezEnableVideoEncoder(void) // enables the 7171
{
#if defined(__ADSP_EDINBURGH__) // ADSP-BF533 EZ-Kit specific info
unsigned short tempReg;
tempReg = *pFlashA_PortA_Out;
tempReg &= ~(RST_7183 | PPICLK_ADV7183_SELECT); // disable 7183
*pFlashA_PortA_Out = tempReg | RST_7171;
#endif // Edinburgh
#if defined(__ADSP_TETON__)
// open PF14
adi_flag_Open(ADI_FLAG_PF14);
//Blackfin PF14 pin must be set as output
adi_flag_SetDirection(ADI_FLAG_PF14, ADI_FLAG_DIRECTION_OUTPUT);
ssync();
// clear bit to reset ADV7179, Blackfin pin PF14
adi_flag_Clear(ADI_FLAG_PF14);
ssync();
adi_flag_Set(ADI_FLAG_PF14);
ssync();
#endif // Teton
}
/*********************************************************************
Function: ezDisableVideoEncoder
Description: Disables the AD7179.
*********************************************************************/
void ezDisableVideoEncoder(void)
{
#if defined(__ADSP_EDINBURGH__) // ADSP-BF533 EZ-Kit specific info
unsigned short tempReg;
tempReg = *pFlashA_PortA_Out;
tempReg &= ~(RST_7171); // disable 7171
*pFlashA_PortA_Out = tempReg;
#endif // Edinburgh
#if defined(__ADSP_TETON__)
adi_flag_Clear(ADI_FLAG_PF14);
// close PF14
adi_flag_Close(ADI_FLAG_PF14);
ssync();
#endif
}
/*********************************************************************
Function: ezDisableVideoDecoder
Description: Disables 7183
*********************************************************************/
void ezDisableVideoDecoder(void)
{
#if defined(__ADSP_EDINBURGH__) // ADSP-BF533 EZ-Kit specific info
// open PF2
adi_flag_Open(ADI_FLAG_PF2);
//Blackfin PF2 pin must be set as output (PF2 is ADV7183 Output Enable)
adi_flag_SetDirection(ADI_FLAG_PF2, ADI_FLAG_DIRECTION_OUTPUT);
//Set the Blackfin pin PF2 to disable ADV7183
adi_flag_Set(ADI_FLAG_PF2);
#endif // Edinburgh
#if defined(__ADSP_TETON__)
// set bit PF2 to disable ADV7183 outputs
adi_flag_Set(ADI_FLAG_PF2);
ssync();
// clear bit PF13 to reset ADV7183
adi_flag_Clear(ADI_FLAG_PF13);
ssync();
#endif
// close PF2 and PF13
adi_flag_Close(ADI_FLAG_PF2);
adi_flag_Close(ADI_FLAG_PF13);
}