diff options
Diffstat (limited to 'Projects/Incomplete/AVRISP/Lib/V2ProtocolParams.c')
| -rw-r--r-- | Projects/Incomplete/AVRISP/Lib/V2ProtocolParams.c | 53 |
1 files changed, 41 insertions, 12 deletions
diff --git a/Projects/Incomplete/AVRISP/Lib/V2ProtocolParams.c b/Projects/Incomplete/AVRISP/Lib/V2ProtocolParams.c index 61f4a88e6..9914c085e 100644 --- a/Projects/Incomplete/AVRISP/Lib/V2ProtocolParams.c +++ b/Projects/Incomplete/AVRISP/Lib/V2ProtocolParams.c @@ -84,24 +84,21 @@ static ParameterItem_t ParameterTable[] = };
+/** Loads saved non-volatile parameter values from the EEPROM into the parameter table, as needed. */
void V2Params_LoadEEPROMParamValues(void)
{
/* Target RESET line polarity is a non-volatile value, retrieve current parameter value from EEPROM */
V2Params_GetParamFromTable(PARAM_RESET_POLARITY)->ParamValue = eeprom_read_byte(&EEPROM_Rest_Polarity);
}
-static ParameterItem_t* V2Params_GetParamFromTable(uint8_t ParamID)
-{
- /* Find the parameter in the parameter table if present */
- for (uint8_t TableIndex = 0; TableIndex < (sizeof(ParameterTable) / sizeof(ParameterTable[0])); TableIndex++)
- {
- if (ParamID == ParameterTable[TableIndex].ParamID)
- return &ParameterTable[TableIndex];
- }
-
- return NULL;
-}
-
+/** Retrieves the host PC read/write privellages for a given parameter in the parameter table. This should
+ * be called before calls to \ref V2Params_GetParameterValue() or \ref V2Params_SetParameterValue() when
+ * getting or setting parameter values in response to requests from the host.
+ *
+ * \param ParamID Parameter ID whose privellages are to be retrieved from the table
+ *
+ * \return Privellages for the requested parameter, as a mask of PARAM_PRIV_* masks
+ */
uint8_t V2Params_GetParameterPrivellages(uint8_t ParamID)
{
ParameterItem_t* ParamInfo = V2Params_GetParamFromTable(ParamID);
@@ -112,6 +109,12 @@ uint8_t V2Params_GetParameterPrivellages(uint8_t ParamID) return ParamInfo->ParamPrivellages;
}
+/** Retrieves the current value for a given parameter in the parameter table.
+ *
+ * \param ParamID Parameter ID whose value is to be retrieved from the table
+ *
+ * \return Current value of the parameter in the table, or 0 if not found
+ */
uint8_t V2Params_GetParameterValue(uint8_t ParamID)
{
ParameterItem_t* ParamInfo = V2Params_GetParamFromTable(ParamID);
@@ -122,6 +125,13 @@ uint8_t V2Params_GetParameterValue(uint8_t ParamID) return ParamInfo->ParamValue;
}
+/** Sets the value for a given parameter in the parameter table.
+ *
+ * \param ParamID Parameter ID whose value is to be set in the table
+ * \param Value New value to set the parameter to
+ *
+ * \return Pointer to the associated parameter information from the parameter table if found, NULL otherwise
+ */
void V2Params_SetParameterValue(uint8_t ParamID, uint8_t Value)
{
ParameterItem_t* ParamInfo = V2Params_GetParamFromTable(ParamID);
@@ -135,3 +145,22 @@ void V2Params_SetParameterValue(uint8_t ParamID, uint8_t Value) if (ParamID == PARAM_RESET_POLARITY)
eeprom_write_byte(&EEPROM_Rest_Polarity, Value);
}
+
+/** Retrieves a parameter entry (including ID, value and privellages) from the parameter table that matches the given
+ * parameter ID.
+ *
+ * \param ParamID Parameter ID to find in the table
+ *
+ * \return Pointer to the associated parameter information from the parameter table if found, NULL otherwise
+ */
+static ParameterItem_t* V2Params_GetParamFromTable(uint8_t ParamID)
+{
+ /* Find the parameter in the parameter table if present */
+ for (uint8_t TableIndex = 0; TableIndex < (sizeof(ParameterTable) / sizeof(ParameterTable[0])); TableIndex++)
+ {
+ if (ParamID == ParameterTable[TableIndex].ParamID)
+ return &ParameterTable[TableIndex];
+ }
+
+ return NULL;
+}
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