|
|
|
|
@ -37,7 +37,7 @@
|
|
|
|
|
|
|
|
|
|
#if defined(ENABLE_ISP_PROTOCOL) || defined(__DOXYGEN__)
|
|
|
|
|
|
|
|
|
|
/** List of SPI prescaler masks for possible AVRStudio ISP programming speeds. */
|
|
|
|
|
/** List of hardware SPI prescaler masks for possible AVRStudio ISP programming speeds. */
|
|
|
|
|
static uint8_t SPIMaskFromSCKDuration[] PROGMEM =
|
|
|
|
|
{
|
|
|
|
|
#if (F_CPU == 8000000)
|
|
|
|
|
@ -61,25 +61,147 @@ static uint8_t SPIMaskFromSCKDuration[] PROGMEM =
|
|
|
|
|
#endif
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/** Converts the given AVR Studio SCK duration parameter (set by a SET PARAM command from the host) to the nearest
|
|
|
|
|
* possible SPI clock prescaler mask for passing to the SPI_Init() routine.
|
|
|
|
|
*
|
|
|
|
|
* \return Nearest SPI prescaler mask for the given SCK frequency
|
|
|
|
|
/** Lookup table to convert the slower ISP speeds into a compare value for the software SPI driver. */
|
|
|
|
|
static uint16_t TimerCompareFromSCKDuration[] PROGMEM =
|
|
|
|
|
{
|
|
|
|
|
TIMER_COMP(96386), TIMER_COMP(89888), TIMER_COMP(84211), TIMER_COMP(79208), TIMER_COMP(74767),
|
|
|
|
|
TIMER_COMP(70797), TIMER_COMP(67227), TIMER_COMP(64000), TIMER_COMP(61069), TIMER_COMP(58395),
|
|
|
|
|
TIMER_COMP(55945), TIMER_COMP(51613), TIMER_COMP(49690), TIMER_COMP(47905), TIMER_COMP(46243),
|
|
|
|
|
TIMER_COMP(43244), TIMER_COMP(41885), TIMER_COMP(39409), TIMER_COMP(38278), TIMER_COMP(36200),
|
|
|
|
|
TIMER_COMP(34335), TIMER_COMP(32654), TIMER_COMP(31129), TIMER_COMP(29740), TIMER_COMP(28470),
|
|
|
|
|
TIMER_COMP(27304), TIMER_COMP(25724), TIMER_COMP(24768), TIMER_COMP(23461), TIMER_COMP(22285),
|
|
|
|
|
TIMER_COMP(21221), TIMER_COMP(20254), TIMER_COMP(19371), TIMER_COMP(18562), TIMER_COMP(17583),
|
|
|
|
|
TIMER_COMP(16914), TIMER_COMP(16097), TIMER_COMP(15356), TIMER_COMP(14520), TIMER_COMP(13914),
|
|
|
|
|
TIMER_COMP(13224), TIMER_COMP(12599), TIMER_COMP(12031), TIMER_COMP(11511), TIMER_COMP(10944),
|
|
|
|
|
TIMER_COMP(10431), TIMER_COMP(9963), TIMER_COMP(9468), TIMER_COMP(9081), TIMER_COMP(8612),
|
|
|
|
|
TIMER_COMP(8239), TIMER_COMP(7851), TIMER_COMP(7498), TIMER_COMP(7137), TIMER_COMP(6809),
|
|
|
|
|
TIMER_COMP(6478), TIMER_COMP(6178), TIMER_COMP(5879), TIMER_COMP(5607), TIMER_COMP(5359),
|
|
|
|
|
TIMER_COMP(5093), TIMER_COMP(4870), TIMER_COMP(4633), TIMER_COMP(4418), TIMER_COMP(4209),
|
|
|
|
|
TIMER_COMP(4019), TIMER_COMP(3823), TIMER_COMP(3645), TIMER_COMP(3474), TIMER_COMP(3310),
|
|
|
|
|
TIMER_COMP(3161), TIMER_COMP(3011), TIMER_COMP(2869), TIMER_COMP(2734), TIMER_COMP(2611),
|
|
|
|
|
TIMER_COMP(2484), TIMER_COMP(2369), TIMER_COMP(2257), TIMER_COMP(2152), TIMER_COMP(2052),
|
|
|
|
|
TIMER_COMP(1956), TIMER_COMP(1866), TIMER_COMP(1779), TIMER_COMP(1695), TIMER_COMP(1615),
|
|
|
|
|
TIMER_COMP(1539), TIMER_COMP(1468), TIMER_COMP(1398), TIMER_COMP(1333), TIMER_COMP(1271),
|
|
|
|
|
TIMER_COMP(1212), TIMER_COMP(1155), TIMER_COMP(1101), TIMER_COMP(1049), TIMER_COMP(1000),
|
|
|
|
|
TIMER_COMP(953), TIMER_COMP(909), TIMER_COMP(866), TIMER_COMP(826), TIMER_COMP(787),
|
|
|
|
|
TIMER_COMP(750), TIMER_COMP(715), TIMER_COMP(682), TIMER_COMP(650), TIMER_COMP(619),
|
|
|
|
|
TIMER_COMP(590), TIMER_COMP(563), TIMER_COMP(536), TIMER_COMP(511), TIMER_COMP(487),
|
|
|
|
|
TIMER_COMP(465), TIMER_COMP(443), TIMER_COMP(422), TIMER_COMP(402), TIMER_COMP(384),
|
|
|
|
|
TIMER_COMP(366), TIMER_COMP(349), TIMER_COMP(332), TIMER_COMP(317), TIMER_COMP(302),
|
|
|
|
|
TIMER_COMP(288), TIMER_COMP(274), TIMER_COMP(261), TIMER_COMP(249), TIMER_COMP(238),
|
|
|
|
|
TIMER_COMP(226), TIMER_COMP(216), TIMER_COMP(206), TIMER_COMP(196), TIMER_COMP(187),
|
|
|
|
|
TIMER_COMP(178), TIMER_COMP(170), TIMER_COMP(162), TIMER_COMP(154), TIMER_COMP(147),
|
|
|
|
|
TIMER_COMP(140), TIMER_COMP(134), TIMER_COMP(128), TIMER_COMP(122), TIMER_COMP(116),
|
|
|
|
|
TIMER_COMP(111), TIMER_COMP(105), TIMER_COMP(100), TIMER_COMP(95.4), TIMER_COMP(90.9),
|
|
|
|
|
TIMER_COMP(86.6), TIMER_COMP(82.6), TIMER_COMP(78.7), TIMER_COMP(75.0), TIMER_COMP(71.5),
|
|
|
|
|
TIMER_COMP(68.2), TIMER_COMP(65.0), TIMER_COMP(61.9), TIMER_COMP(59.0), TIMER_COMP(56.3),
|
|
|
|
|
TIMER_COMP(53.6), TIMER_COMP(51.1)
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/** Currently selected SPI driver, either hardware (for fast ISP speeds) or software (for slower ISP speeds). */
|
|
|
|
|
bool HardwareSPIMode = true;
|
|
|
|
|
|
|
|
|
|
/** Software SPI data register for sending and receiving */
|
|
|
|
|
volatile uint8_t SoftSPI_Data;
|
|
|
|
|
|
|
|
|
|
/** Number of bits left to transfer in the software SPI driver */
|
|
|
|
|
volatile uint8_t SoftSPI_BitsRemaining;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** ISR to handle software SPI transmission and reception */
|
|
|
|
|
ISR(TIMER1_COMPA_vect, ISR_BLOCK)
|
|
|
|
|
{
|
|
|
|
|
if (!(PINB & (1 << 1)))
|
|
|
|
|
{
|
|
|
|
|
if (SoftSPI_Data & 0x80)
|
|
|
|
|
PORTB |= (1 << 2);
|
|
|
|
|
else
|
|
|
|
|
PORTB &= ~(1 << 2);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
SoftSPI_Data <<= 1;
|
|
|
|
|
|
|
|
|
|
if (!(SoftSPI_BitsRemaining--))
|
|
|
|
|
TCCR1B = 0;
|
|
|
|
|
|
|
|
|
|
if (PINB & (1 << 3))
|
|
|
|
|
SoftSPI_Data |= 0x01;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
PORTB ^= (1 << 1);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** Initializes the appropriate SPI driver (hardware or software, depending on the selected ISP speed) ready for
|
|
|
|
|
* communication with the attached target.
|
|
|
|
|
*/
|
|
|
|
|
uint8_t ISPTarget_GetSPIPrescalerMask(void)
|
|
|
|
|
void ISPTarget_Init(void)
|
|
|
|
|
{
|
|
|
|
|
uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION);
|
|
|
|
|
|
|
|
|
|
if (SCKDuration >= sizeof(SPIMaskFromSCKDuration))
|
|
|
|
|
SCKDuration = (sizeof(SPIMaskFromSCKDuration) - 1);
|
|
|
|
|
|
|
|
|
|
return pgm_read_byte(&SPIMaskFromSCKDuration[SCKDuration]);
|
|
|
|
|
if (SCKDuration < sizeof(SPIMaskFromSCKDuration))
|
|
|
|
|
{
|
|
|
|
|
HardwareSPIMode = true;
|
|
|
|
|
|
|
|
|
|
SPI_Init(pgm_read_byte(&SPIMaskFromSCKDuration[SCKDuration]) | SPI_ORDER_MSB_FIRST |
|
|
|
|
|
SPI_SCK_LEAD_RISING | SPI_SAMPLE_LEADING | SPI_MODE_MASTER);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
HardwareSPIMode = false;
|
|
|
|
|
|
|
|
|
|
DDRB |= ((1 << 1) | (1 << 2));
|
|
|
|
|
PORTB |= ((1 << 0) | (1 << 3));
|
|
|
|
|
|
|
|
|
|
TIMSK1 = (1 << OCIE1A);
|
|
|
|
|
OCR1A = pgm_read_word(&TimerCompareFromSCKDuration[SCKDuration - sizeof(SPIMaskFromSCKDuration)]);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** Shuts down the current selected SPI driver (hardware or software, depending on the selected ISP speed) so that no
|
|
|
|
|
* further communications can occur until the driver is re-initialized.
|
|
|
|
|
*/
|
|
|
|
|
void ISPTarget_ShutDown(void)
|
|
|
|
|
{
|
|
|
|
|
if (HardwareSPIMode)
|
|
|
|
|
{
|
|
|
|
|
SPI_ShutDown();
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
DDRB &= ~((1 << 1) | (1 << 2));
|
|
|
|
|
PORTB &= ~((1 << 0) | (1 << 3));
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** Sends and receives a single byte of data to and from the attached target via software SPI.
|
|
|
|
|
*
|
|
|
|
|
* \param[in] Byte Byte of data to send to the attached target
|
|
|
|
|
*
|
|
|
|
|
* \return Received byte of data from the attached target
|
|
|
|
|
*/
|
|
|
|
|
uint8_t ISPTarget_TransferSoftSPIByte(const uint8_t Byte)
|
|
|
|
|
{
|
|
|
|
|
SoftSPI_Data = Byte;
|
|
|
|
|
SoftSPI_BitsRemaining = 8;
|
|
|
|
|
|
|
|
|
|
if (SoftSPI_Data & 0x01)
|
|
|
|
|
PORTB |= (1 << 2);
|
|
|
|
|
else
|
|
|
|
|
PORTB &= ~(1 << 2);
|
|
|
|
|
|
|
|
|
|
TCNT1 = 0;
|
|
|
|
|
TCCR1B = ((1 << WGM12) | (1 << CS11));
|
|
|
|
|
while (SoftSPI_BitsRemaining && TimeoutTicksRemaining);
|
|
|
|
|
TCCR1B = 0;
|
|
|
|
|
|
|
|
|
|
return SoftSPI_Data;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** Asserts or deasserts the target's reset line, using the correct polarity as set by the host using a SET PARAM command.
|
|
|
|
|
* When not asserted, the line is tristated so as not to interfere with normal device operation.
|
|
|
|
|
*
|
|
|
|
|
* \param[in] ResetTarget Boolean true when the target should be held in reset, false otherwise
|
|
|
|
|
* \param[in] ResetTarget Boolean true when the target should be held in reset, false otherwise
|
|
|
|
|
*/
|
|
|
|
|
void ISPTarget_ChangeTargetResetLine(const bool ResetTarget)
|
|
|
|
|
{
|
|
|
|
|
@ -97,14 +219,44 @@ void ISPTarget_ChangeTargetResetLine(const bool ResetTarget)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** Waits until the target has completed the last operation, by continuously polling the device's
|
|
|
|
|
* BUSY flag until it is cleared, or until the command timeout period has expired.
|
|
|
|
|
*
|
|
|
|
|
* \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT otherwise
|
|
|
|
|
*/
|
|
|
|
|
uint8_t ISPTarget_WaitWhileTargetBusy(void)
|
|
|
|
|
{
|
|
|
|
|
do
|
|
|
|
|
{
|
|
|
|
|
ISPTarget_SendByte(0xF0);
|
|
|
|
|
ISPTarget_SendByte(0x00);
|
|
|
|
|
ISPTarget_SendByte(0x00);
|
|
|
|
|
}
|
|
|
|
|
while ((ISPTarget_ReceiveByte() & 0x01) && TimeoutTicksRemaining);
|
|
|
|
|
|
|
|
|
|
return TimeoutTicksRemaining ? STATUS_CMD_OK : STATUS_RDY_BSY_TOUT;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the
|
|
|
|
|
* 64KB boundary. This sends the command with the correct address as indicated by the current address
|
|
|
|
|
* pointer variable set by the host when a SET ADDRESS command is issued.
|
|
|
|
|
*/
|
|
|
|
|
void ISPTarget_LoadExtendedAddress(void)
|
|
|
|
|
{
|
|
|
|
|
ISPTarget_SendByte(LOAD_EXTENDED_ADDRESS_CMD);
|
|
|
|
|
ISPTarget_SendByte(0x00);
|
|
|
|
|
ISPTarget_SendByte((CurrentAddress & 0x00FF0000) >> 16);
|
|
|
|
|
ISPTarget_SendByte(0x00);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** Waits until the last issued target memory programming command has completed, via the check mode given and using
|
|
|
|
|
* the given parameters.
|
|
|
|
|
*
|
|
|
|
|
* \param[in] ProgrammingMode Programming mode used and completion check to use, a mask of PROG_MODE_* constants
|
|
|
|
|
* \param[in] PollAddress Memory address to poll for completion if polling check mode used
|
|
|
|
|
* \param[in] PollValue Poll value to check against if polling check mode used
|
|
|
|
|
* \param[in] DelayMS Milliseconds to delay before returning if delay check mode used
|
|
|
|
|
* \param[in] ReadMemCommand Device low-level READ MEMORY command to send if value check mode used
|
|
|
|
|
* \param[in] PollAddress Memory address to poll for completion if polling check mode used
|
|
|
|
|
* \param[in] PollValue Poll value to check against if polling check mode used
|
|
|
|
|
* \param[in] DelayMS Milliseconds to delay before returning if delay check mode used
|
|
|
|
|
* \param[in] ReadMemCommand Device low-level READ MEMORY command to send if value check mode used
|
|
|
|
|
*
|
|
|
|
|
* \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT or
|
|
|
|
|
* \ref STATUS_CMD_TOUT otherwise
|
|
|
|
|
@ -128,11 +280,11 @@ uint8_t ISPTarget_WaitForProgComplete(const uint8_t ProgrammingMode,
|
|
|
|
|
case PROG_MODE_PAGED_VALUE_MASK:
|
|
|
|
|
do
|
|
|
|
|
{
|
|
|
|
|
SPI_SendByte(ReadMemCommand);
|
|
|
|
|
SPI_SendByte(PollAddress >> 8);
|
|
|
|
|
SPI_SendByte(PollAddress & 0xFF);
|
|
|
|
|
ISPTarget_SendByte(ReadMemCommand);
|
|
|
|
|
ISPTarget_SendByte(PollAddress >> 8);
|
|
|
|
|
ISPTarget_SendByte(PollAddress & 0xFF);
|
|
|
|
|
}
|
|
|
|
|
while ((SPI_TransferByte(0x00) == PollValue) && TimeoutTicksRemaining);
|
|
|
|
|
while ((ISPTarget_TransferByte(0x00) == PollValue) && TimeoutTicksRemaining);
|
|
|
|
|
|
|
|
|
|
if (!(TimeoutTicksRemaining))
|
|
|
|
|
ProgrammingStatus = STATUS_CMD_TOUT;
|
|
|
|
|
@ -147,34 +299,4 @@ uint8_t ISPTarget_WaitForProgComplete(const uint8_t ProgrammingMode,
|
|
|
|
|
return ProgrammingStatus;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** Waits until the target has completed the last operation, by continuously polling the device's
|
|
|
|
|
* BUSY flag until it is cleared, or until the command timeout period has expired.
|
|
|
|
|
*
|
|
|
|
|
* \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT otherwise
|
|
|
|
|
*/
|
|
|
|
|
uint8_t ISPTarget_WaitWhileTargetBusy(void)
|
|
|
|
|
{
|
|
|
|
|
do
|
|
|
|
|
{
|
|
|
|
|
SPI_SendByte(0xF0);
|
|
|
|
|
SPI_SendByte(0x00);
|
|
|
|
|
SPI_SendByte(0x00);
|
|
|
|
|
}
|
|
|
|
|
while ((SPI_ReceiveByte() & 0x01) && TimeoutTicksRemaining);
|
|
|
|
|
|
|
|
|
|
return TimeoutTicksRemaining ? STATUS_CMD_OK : STATUS_RDY_BSY_TOUT;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the
|
|
|
|
|
* 64KB boundary. This sends the command with the correct address as indicated by the current address
|
|
|
|
|
* pointer variable set by the host when a SET ADDRESS command is issued.
|
|
|
|
|
*/
|
|
|
|
|
void ISPTarget_LoadExtendedAddress(void)
|
|
|
|
|
{
|
|
|
|
|
SPI_SendByte(LOAD_EXTENDED_ADDRESS_CMD);
|
|
|
|
|
SPI_SendByte(0x00);
|
|
|
|
|
SPI_SendByte((CurrentAddress & 0x00FF0000) >> 16);
|
|
|
|
|
SPI_SendByte(0x00);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
Dean Camera
14 years ago