#include "V2ProtocolTarget.h"\r
\r
/** Current memory address for FLASH/EEPROM memory read/write commands */\r
-uint32_t CurrentAddress; \r
+uint32_t CurrentAddress;\r
\r
+/** Converts the given AVR Studio SCK duration parameter (set by a SET PARAM command from the host) to the nearest\r
+ * possible SPI clock prescaler mask for passing to the SPI_Init() routine.\r
+ *\r
+ * \return Nearest SPI prescaler mask for the given SCK frequency\r
+ */\r
uint8_t V2Protocol_GetSPIPrescalerMask(void)\r
{\r
static const uint8_t SPIMaskFromSCKDuration[TOTAL_PROGRAMMING_SPEEDS] =\r
{\r
- #if (F_CPU == 8000000)\r
- SPI_SPEED_FCPU_DIV_2,\r
- #endif\r
- SPI_SPEED_FCPU_DIV_2, SPI_SPEED_FCPU_DIV_4, SPI_SPEED_FCPU_DIV_8,\r
- SPI_SPEED_FCPU_DIV_16, SPI_SPEED_FCPU_DIV_32, SPI_SPEED_FCPU_DIV_64\r
- #if (F_CPU == 16000000)\r
- , SPI_SPEED_FCPU_DIV_128\r
- #endif\r
+ #if (F_CPU == 8000000)\r
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 4MHz SPI\r
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI\r
+ SPI_SPEED_FCPU_DIV_4, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI\r
+ SPI_SPEED_FCPU_DIV_8, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI\r
+ SPI_SPEED_FCPU_DIV_16, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI\r
+ SPI_SPEED_FCPU_DIV_32, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI\r
+ SPI_SPEED_FCPU_DIV_64 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI \r
+ #if (F_CPU == 16000000)\r
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 8MHz SPI\r
+ SPI_SPEED_FCPU_DIV_4, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI\r
+ SPI_SPEED_FCPU_DIV_8, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI\r
+ SPI_SPEED_FCPU_DIV_16, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI\r
+ SPI_SPEED_FCPU_DIV_32, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI\r
+ SPI_SPEED_FCPU_DIV_64, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI \r
+ SPI_SPEED_FCPU_DIV_128 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI\r
+ #else\r
+ #error No SPI prescaler masks for chosen F_CPU speed.\r
+ #endif\r
};\r
\r
uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION);\r
return SPIMaskFromSCKDuration[SCKDuration];\r
}\r
\r
+/** Asserts or deasserts the target's reset line, using the correct polarity as set by the host using a SET PARAM command.\r
+ * When not asserted, the line is tristated so as not to intefere with normal device operation.\r
+ *\r
+ * \param ResetTarget Boolean true when the target should be held in reset, false otherwise\r
+ */\r
void V2Protocol_ChangeTargetResetLine(bool ResetTarget)\r
{\r
if (ResetTarget)\r
}\r
}\r
\r
+/** Waits until the last issued target memory programming command has completed, via the check mode given and using\r
+ * the given parameters.\r
+ *\r
+ * \param ProgrammingMode Programming mode used and completion check to use, a mask of PROG_MODE_* constants\r
+ * \param PollAddress Memory address to poll for completion if polling check mode used\r
+ * \param PollValue Poll value to check against if polling check mode used\r
+ * \param DelayMS Milliseconds to delay before returning if delay check mode used\r
+ * \param ReadMemCommand Device low-level READ MEMORY command to send if value check mode used\r
+ *\r
+ * \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT or\r
+ * \ref STATUS_CMD_TOUT otherwise\r
+ */\r
uint8_t V2Protocol_WaitForProgComplete(uint8_t ProgrammingMode, uint16_t PollAddress, uint8_t PollValue,\r
uint8_t DelayMS, uint8_t ReadMemCommand)\r
{\r
while ((SPI_TransferByte(0x00) != PollValue) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));\r
\r
if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)\r
- ProgrammingStatus = STATUS_RDY_BSY_TOUT;\r
+ ProgrammingStatus = STATUS_CMD_TOUT;\r
\r
break; \r
case PROG_MODE_WORD_READYBUSY_MASK:\r
return ProgrammingStatus;\r
}\r
\r
+/** Waits until the target has completed the last operation, by continuously polling the device's\r
+ * BUSY flag until it is cleared, or until the \ref TARGET_BUSY_TIMEOUT_MS timeout period has expired.\r
+ *\r
+ * \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT otherwise\r
+ */\r
uint8_t V2Protocol_WaitWhileTargetBusy(void)\r
{\r
TCNT0 = 0;\r
return STATUS_CMD_OK;\r
}\r
\r
+/** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the\r
+ * 64KB boundary. This sends the command with the correct address as indicated by the current address\r
+ * pointer variable set by the host when a SET ADDRESS command is issued.\r
+ */\r
void V2Protocol_LoadExtendedAddress(void)\r
{\r
SPI_SendByte(0x4D);\r
projects / pub / USBasp.git / blobdiff