diff options
Diffstat (limited to 'Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c')
| -rw-r--r-- | Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c | 62 |
1 files changed, 52 insertions, 10 deletions
diff --git a/Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c b/Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c index e23885bb3..a39c5e96d 100644 --- a/Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c +++ b/Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c @@ -36,20 +36,36 @@ #include "V2ProtocolTarget.h"
/** Current memory address for FLASH/EEPROM memory read/write commands */
-uint32_t CurrentAddress;
+uint32_t CurrentAddress;
+/** 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
+ */
uint8_t V2Protocol_GetSPIPrescalerMask(void)
{
static const uint8_t SPIMaskFromSCKDuration[TOTAL_PROGRAMMING_SPEEDS] =
{
- #if (F_CPU == 8000000)
- SPI_SPEED_FCPU_DIV_2,
- #endif
- SPI_SPEED_FCPU_DIV_2, SPI_SPEED_FCPU_DIV_4, SPI_SPEED_FCPU_DIV_8,
- SPI_SPEED_FCPU_DIV_16, SPI_SPEED_FCPU_DIV_32, SPI_SPEED_FCPU_DIV_64
- #if (F_CPU == 16000000)
- , SPI_SPEED_FCPU_DIV_128
- #endif
+ #if (F_CPU == 8000000)
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 4MHz SPI
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI
+ SPI_SPEED_FCPU_DIV_4, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI
+ SPI_SPEED_FCPU_DIV_8, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI
+ SPI_SPEED_FCPU_DIV_16, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI
+ SPI_SPEED_FCPU_DIV_32, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI
+ SPI_SPEED_FCPU_DIV_64 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI
+ #if (F_CPU == 16000000)
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 8MHz SPI
+ SPI_SPEED_FCPU_DIV_4, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI
+ SPI_SPEED_FCPU_DIV_8, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI
+ SPI_SPEED_FCPU_DIV_16, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI
+ SPI_SPEED_FCPU_DIV_32, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI
+ SPI_SPEED_FCPU_DIV_64, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI
+ SPI_SPEED_FCPU_DIV_128 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI
+ #else
+ #error No SPI prescaler masks for chosen F_CPU speed.
+ #endif
};
uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION);
@@ -60,6 +76,11 @@ uint8_t V2Protocol_GetSPIPrescalerMask(void) return SPIMaskFromSCKDuration[SCKDuration];
}
+/** 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 intefere with normal device operation.
+ *
+ * \param ResetTarget Boolean true when the target should be held in reset, false otherwise
+ */
void V2Protocol_ChangeTargetResetLine(bool ResetTarget)
{
if (ResetTarget)
@@ -76,6 +97,18 @@ void V2Protocol_ChangeTargetResetLine(bool ResetTarget) }
}
+/** Waits until the last issued target memory programming command has completed, via the check mode given and using
+ * the given parameters.
+ *
+ * \param ProgrammingMode Programming mode used and completion check to use, a mask of PROG_MODE_* constants
+ * \param PollAddress Memory address to poll for completion if polling check mode used
+ * \param PollValue Poll value to check against if polling check mode used
+ * \param DelayMS Milliseconds to delay before returning if delay check mode used
+ * \param 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
+ */
uint8_t V2Protocol_WaitForProgComplete(uint8_t ProgrammingMode, uint16_t PollAddress, uint8_t PollValue,
uint8_t DelayMS, uint8_t ReadMemCommand)
{
@@ -101,7 +134,7 @@ uint8_t V2Protocol_WaitForProgComplete(uint8_t ProgrammingMode, uint16_t PollAdd while ((SPI_TransferByte(0x00) != PollValue) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));
if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)
- ProgrammingStatus = STATUS_RDY_BSY_TOUT;
+ ProgrammingStatus = STATUS_CMD_TOUT;
break;
case PROG_MODE_WORD_READYBUSY_MASK:
@@ -113,6 +146,11 @@ uint8_t V2Protocol_WaitForProgComplete(uint8_t ProgrammingMode, uint16_t PollAdd 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 \ref TARGET_BUSY_TIMEOUT_MS 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 V2Protocol_WaitWhileTargetBusy(void)
{
TCNT0 = 0;
@@ -132,6 +170,10 @@ uint8_t V2Protocol_WaitWhileTargetBusy(void) return STATUS_CMD_OK;
}
+/** 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 V2Protocol_LoadExtendedAddress(void)
{
SPI_SendByte(0x4D);
|