@ -30,6 +30,8 @@
# if defined(ENABLE_XPROG_PROTOCOL)
# warning PDI Programming Protocol support is incomplete and not currently suitable for use.
/** \file
*
* PDI Protocol handler , to process V2 Protocol wrapped PDI commands used in Atmel programmer devices .
@ -61,6 +63,9 @@ void PDIProtocol_XPROG_SetMode(void)
Endpoint_ClearIN ( ) ;
}
/** Handler for the CMD_XPROG command, which wraps up XPROG commands in a V2 wrapper which need to be
* removed and processed so that the underlying XPROG command can be handled .
*/
void PDIProtocol_XPROG_Command ( void )
{
uint8_t XPROGCommand = Endpoint_Read_Byte ( ) ;
@ -74,7 +79,7 @@ void PDIProtocol_XPROG_Command(void)
PDIProtocol_LeaveXPROGMode ( ) ;
break ;
case XPRG_CMD_ERASE :
PDIProtocol_Erase Chip ( ) ;
PDIProtocol_Erase ( ) ;
break ;
case XPRG_CMD_WRITE_MEM :
PDIProtocol_WriteMemory ( ) ;
@ -91,6 +96,7 @@ void PDIProtocol_XPROG_Command(void)
}
}
/** Handler for the XPROG ENTER_PROGMODE command to establish a PDI connection with the attached device. */
static void PDIProtocol_EnterXPROGMode ( void )
{
uint8_t ReturnStatus = XPRG_ERR_OK ;
@ -101,22 +107,20 @@ static void PDIProtocol_EnterXPROGMode(void)
PDIDATA_LINE_DDR | = PDIDATA_LINE_MASK ;
PDICLOCK_LINE_DDR | = PDICLOCK_LINE_MASK ;
/* Must hold DATA line high for at least 90nS to enable PDI interface */
PDIDATA_LINE_PORT | = PDIDATA_LINE_MASK ;
_delay_us ( 1 ) ;
/* Toggle CLOCK line 16 times within 100uS of the original 90nS timeout to keep PDI interface enabled */
for ( uint8_t i = 0 ; i < 16 ; i + + )
{
PDICLOCK_LINE_PORT ^ = PDICLOCK_LINE_MASK ;
PDICLOCK_LINE_PORT ^ = PDICLOCK_LINE_MASK ;
}
static const uint8_t NVMKey [ 8 ] = { 0x12 , 0x89 , 0xAB , 0x45 , 0xCD , 0xD8 , 0x88 , 0xFF } ;
TOGGLE_PDI_CLOCK ;
/* Enable access to the XPROG NVM bus by sending the documented NVM access key to the device */
PDITarget_SendByte ( PDI_CMD_KEY ) ;
for ( uint8_t i = 0 ; i < 8 ; i + + )
PDITarget_SendByte ( NVMKey [ i ] ) ;
PDITarget_SendByte ( PDI_NVMENABLE_KEY [ i ] ) ;
/* Read out the STATUS register to check that NVM access was successfully enabled */
PDITarget_SendByte ( PDI_CMD_LDCS | PD_STATUS_REG ) ;
if ( ! ( PDITarget_ReceiveByte ( ) & PDI_STATUS_NVM ) )
ReturnStatus = XPRG_ERR_FAILED ;
@ -127,14 +131,19 @@ static void PDIProtocol_EnterXPROGMode(void)
Endpoint_ClearIN ( ) ;
}
/** Handler for the XPROG LEAVE_PROGMODE command to terminate the PDI programming connection with
* the attached device .
*/
static void PDIProtocol_LeaveXPROGMode ( void )
{
Endpoint_ClearOUT ( ) ;
Endpoint_SetEndpointDirection ( ENDPOINT_DIR_IN ) ;
/* Set DATA and CLOCK lines to inputs */
PDIDATA_LINE_DDR & = ~ PDIDATA_LINE_MASK ;
PDICLOCK_LINE_DDR & = ~ PDICLOCK_LINE_MASK ;
/* Tristate DATA and CLOCK lines */
PDIDATA_LINE_PORT & = ~ PDIDATA_LINE_MASK ;
PDICLOCK_LINE_PORT & = ~ PDICLOCK_LINE_MASK ;
@ -144,7 +153,8 @@ static void PDIProtocol_LeaveXPROGMode(void)
Endpoint_ClearIN ( ) ;
}
static void PDIProtocol_EraseChip ( void )
/** Handler for the XPRG ERASE command to erase a specific memory address space in the attached device. */
static void PDIProtocol_Erase ( void )
{
uint8_t ReturnStatus = XPRG_ERR_OK ;
@ -167,6 +177,7 @@ static void PDIProtocol_EraseChip(void)
Endpoint_ClearIN ( ) ;
}
/** Handler for the XPROG WRITE_MEMORY command to write to a specific memory space within the attached device. */
static void PDIProtocol_WriteMemory ( void )
{
uint8_t ReturnStatus = XPRG_ERR_OK ;
@ -196,6 +207,9 @@ static void PDIProtocol_WriteMemory(void)
Endpoint_ClearIN ( ) ;
}
/** Handler for the XPROG READ_MEMORY command to read data from a specific address space within the
* attached device .
*/
static void PDIProtocol_ReadMemory ( void )
{
uint8_t ReturnStatus = XPRG_ERR_OK ;
@ -219,23 +233,13 @@ static void PDIProtocol_ReadMemory(void)
Endpoint_Write_Byte ( CMD_XPROG ) ;
Endpoint_Write_Byte ( XPRG_CMD_READ_MEM ) ;
Endpoint_Write_Byte ( ReturnStatus ) ;
// START TEMP
uint8_t ProgData [ 256 ] ;
for ( uint16_t i = 0 ; i < ReadMemory_XPROG_Params . Length ; i + + )
ProgData [ i ] = i ;
Endpoint_Write_Stream_LE ( ProgData , ReadMemory_XPROG_Params . Length ) ;
if ( ! Endpoint_IsReadWriteAllowed ( ) )
{
Endpoint_ClearIN ( ) ;
while ( ! ( Endpoint_IsReadWriteAllowed ( ) ) ) ;
}
// END TEMP
Endpoint_ClearIN ( ) ;
}
/** Handler for the XPROG CRC command to read a specific memory space's CRC value for comparison between the
* attached device ' s memory and a data set on the host .
*/
static void PDIProtocol_ReadCRC ( void )
{
uint8_t ReturnStatus = XPRG_ERR_OK ;
@ -262,6 +266,9 @@ static void PDIProtocol_ReadCRC(void)
Endpoint_ClearIN ( ) ;
}
/** Handler for the XPROG SET_PARAM command to set a PDI parameter for use when communicating with the
* attached device .
*/
static void PDIProtocol_SetParam ( void )
{
uint8_t ReturnStatus = XPRG_ERR_OK ;
Dean Camera
15 years ago