diff options
Diffstat (limited to 'Projects/AVRISP-MKII')
-rw-r--r-- | Projects/AVRISP-MKII/AVRISP.txt | 4 | ||||
-rw-r--r-- | Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c | 23 |
2 files changed, 21 insertions, 6 deletions
diff --git a/Projects/AVRISP-MKII/AVRISP.txt b/Projects/AVRISP-MKII/AVRISP.txt index b05bb4da4..7688f7e0d 100644 --- a/Projects/AVRISP-MKII/AVRISP.txt +++ b/Projects/AVRISP-MKII/AVRISP.txt @@ -156,7 +156,7 @@ *
* <b><sup>1</sup></b> <i>Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only</i> \n
* <b><sup>2</sup></b> <i>When XPROG_VIA_HARDWARE_USART is set, the AVR's Tx and Rx become the DATA line when connected together
- * via a pair of 300 ohm resistors, and the AVR's XCK pin becomes CLOCK.</i> \n
+ * via a pair of 220 ohm resistors, and the AVR's XCK pin becomes CLOCK.</i> \n
* <b><sup>3</sup></b> <i>See AUX line related tokens in the \ref SSec_Options section</i>
*
* \section Sec_TPI TPI Connections
@@ -202,7 +202,7 @@ *
* <b><sup>1</sup></b> <i>Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only</i> \n
* <b><sup>2</sup></b> <i>When XPROG_VIA_HARDWARE_USART is set, the AVR's Tx and Rx become the DATA line when connected together
- * via a pair of 300 ohm resistors, and the AVR's XCK pin becomes CLOCK.</i> \n
+ * via a pair of 220 ohm resistors, and the AVR's XCK pin becomes CLOCK.</i> \n
* <b><sup>3</sup></b> <i>See AUX line related tokens in the \ref SSec_Options section</i>
*
* \section SSec_Options Project Options
diff --git a/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c b/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c index 4ed3da75d..39cdf2e9c 100644 --- a/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c +++ b/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c @@ -141,11 +141,11 @@ bool TINYNVM_ReadMemory(const uint16_t ReadAddress, uint8_t* ReadBuffer, uint16_ return true;
}
-/** Writes byte addressed memory to the target's memory spaces.
+/** Writes word addressed memory to the target's memory spaces.
*
* \param[in] WriteAddress Start address to write to within the target's address space
* \param[in] WriteBuffer Buffer to source data from
- * \param[in] WriteLength Total number of bytes to write to the device
+ * \param[in] WriteLength Total number of bytes to write to the device (must be an integer multiple of 2)
*
* \return Boolean true if the command sequence complete successfully
*/
@@ -154,6 +154,10 @@ bool TINYNVM_WriteMemory(const uint16_t WriteAddress, const uint8_t* WriteBuffer /* Wait until the NVM controller is no longer busy */
if (!(TINYNVM_WaitWhileNVMControllerBusy()))
return false;
+
+ /* Must have an integer number of words to write - if extra bytes, abort programming */
+ if (WriteLength & 0x01)
+ return false;
/* Set the NVM control register to the WORD WRITE command for memory reading */
TINYNVM_SendWriteNVMRegister(XPROG_Param_NVMCMDRegAddr);
@@ -162,11 +166,22 @@ bool TINYNVM_WriteMemory(const uint16_t WriteAddress, const uint8_t* WriteBuffer /* Send the address of the location to write to */
TINYNVM_SendPointerAddress(WriteAddress);
- while (WriteLength--)
+ while (WriteLength)
{
- /* Write the byte of data to the target */
+ /* Wait until the NVM controller is no longer busy */
+ if (!(TINYNVM_WaitWhileNVMControllerBusy()))
+ return false;
+
+ /* Write the low byte of data to the target */
XPROGTarget_SendByte(TPI_CMD_SST | TPI_POINTER_INDIRECT_PI);
XPROGTarget_SendByte(*(WriteBuffer++));
+
+ /* Write the high byte of data to the target */
+ XPROGTarget_SendByte(TPI_CMD_SST | TPI_POINTER_INDIRECT_PI);
+ XPROGTarget_SendByte(*(WriteBuffer++));
+
+ /* Need to decrement the write length twice, since we read out a whole word */
+ WriteLength -= 2;
}
return true;
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