/*
* ======== Timer_reconfig ========
* 1. Init obj using params
* 2. Reconfig Hwi
* 3. Timer_init()
* 4. Timer configuration (wrt emulation, external frequency etc)
* 5. Timer_setPeriod()
* 6. Timer_start()
*/
Void Timer_reconfig (Timer_Object *obj, Timer_FuncPtr tickFxn, const Timer_Params *params,
Error_Block *eb)
{
Hwi_Params hwiParams;
obj->runMode = params->runMode;
obj->startMode = params->startMode;
obj->period = params->period;
obj->periodType = params->periodType;
if (obj->periodType == Timer_PeriodType_MICROSECS) {
if (!Timer_setPeriodMicroSecs(obj, obj->period)) {
Error_raise(eb, Timer_E_cannotSupport, obj->period, 0);
}
}
obj->arg = params->arg;
obj->tickFxn = tickFxn;
if (obj->tickFxn) {
if (params->hwiParams) {
Hwi_Params_copy(&hwiParams, (params->hwiParams));
}
else {
Hwi_Params_init(&hwiParams);
}
if (obj->id == 0) {
hwiParams.arg = (UArg)obj;
if (obj->runMode == Timer_RunMode_CONTINUOUS) {
Hwi_reconfig (obj->hwi, Timer_periodicStub, &hwiParams);
}
else {
Hwi_reconfig (obj->hwi, Timer_oneShotStub, &hwiParams);
}
}
else {
hwiParams.arg = obj->arg;
Hwi_reconfig (obj->hwi, obj->tickFxn, &hwiParams);
}
}
postInit(obj, eb);
if (obj->startMode == Timer_StartMode_AUTO) {
Timer_start(obj);
}
}
/*
* ======== Hwi_Instance_init ========
*/
Int Hwi_Instance_init(Hwi_Object *hwi, Int intNum, Hwi_FuncPtr fxn, const Hwi_Params *params, Error_Block *eb)
{
Int status;
if (Hwi_module->dispatchTable[intNum] != NULL) {
Error_raise(eb, Hwi_E_alreadyDefined, intNum, 0);
return (1);
}
Hwi_module->dispatchTable[intNum] = hwi;
Hwi_reconfig(hwi, fxn, params);
#ifndef ti_sysbios_hal_Hwi_DISABLE_ALL_HOOKS
if (Hwi_hooks.length > 0) {
/* Allocate environment space for each hook instance. */
hwi->hookEnv = Memory_calloc(Hwi_Object_heap(),
Hwi_hooks.length * sizeof(Ptr), 0, eb);
if (hwi->hookEnv == NULL) {
return (1);
}
}
#endif
hwi->irp = 0;
status = postInit(hwi, eb);
if (Error_check(eb)) {
return (2 + status);
}
return (0);
}
/*
* ======== Timer_reconfig ========
* 1. Init obj using params
* 2. Reconfig Hwi
* 3. Timer_init()
* 4. Timer configuration (wrt emulation, external frequency etc)
* 5. Timer_setPeriod()
* 6. Timer_start()
*/
Void Timer_reconfig (Timer_Object *obj, Timer_FuncPtr tickFxn,
const Timer_Params *params, Error_Block *eb)
{
Hwi_Params hwiParams;
obj->runMode = params->runMode;
obj->startMode = params->startMode;
obj->altclk = params->altclk;
obj->period = params->period;
obj->periodType = params->periodType;
obj->prevThreshold = params->prevThreshold;
obj->rollovers = 0;
obj->savedCurrCount = 0;
if (obj->altclk) { /* if using altclk the freq is always 16MHz */
obj->extFreq.lo = 16000000;
obj->extFreq.hi = 0;
}
else { /* else use specified extFreq */
obj->extFreq.lo = params->extFreq.lo;
obj->extFreq.hi = params->extFreq.hi;
}
if (obj->periodType == Timer_PeriodType_MICROSECS) {
if (!Timer_setPeriodMicroSecs(obj, obj->period)) {
Error_raise(eb, Timer_E_cannotSupport, obj->period, 0);
}
}
obj->arg = params->arg;
obj->tickFxn = tickFxn;
if (obj->tickFxn) {
if (params->hwiParams) {
Hwi_Params_copy(&hwiParams, (params->hwiParams));
}
else {
Hwi_Params_init(&hwiParams);
}
hwiParams.arg = (UArg)obj;
Hwi_reconfig (obj->hwi, Timer_isrStub, &hwiParams);
}
Timer_postInit(obj, eb);
if (obj->startMode == Timer_StartMode_AUTO) {
Timer_start(obj);
}
}
/*
* ======== Timer_reconfig ========
* 1. Init obj using params
* 2. Reconfig Hwi
* 3. Timer_init()
* 4. Timer configuration (wrt emulation, external frequency etc)
* 5. Timer_setPeriod()
* 6. Timer_start()
*/
Void Timer_reconfig (Timer_Object *obj, Timer_FuncPtr tickFxn, const Timer_Params *params,
Error_Block *eb)
{
Hwi_Params hwiParams;
UInt arBit;
/* determine controlReg 'ar' value (continuous / oneshot) */
arBit = (params->runMode == Timer_RunMode_CONTINUOUS) ? 1 : 0;
obj->controlRegInit = ((arBit << 1) |
(params->controlRegInit.ptv << 2) |
(params->controlRegInit.ce << 5) |
(params->controlRegInit.free << 6));
obj->runMode = params->runMode;
obj->startMode = params->startMode;
obj->period = params->period;
obj->periodType = params->periodType;
obj->arg = params->arg;
obj->tickFxn = tickFxn;
if (params->extFreq.lo) {
obj->extFreq.lo = params->extFreq.lo;
}
if (obj->tickFxn) {
if (params->hwiParams) {
Hwi_Params_copy(&hwiParams, (params->hwiParams));
}
else {
Hwi_Params_init(&hwiParams);
}
hwiParams.arg = obj->arg;
Hwi_reconfig (obj->hwi, obj->tickFxn, &hwiParams);
}
postInit(obj, eb);
if (obj->startMode == Timer_StartMode_AUTO) {
Timer_start(obj);
}
}
/*
* ======== HWI_dispatchPlug ========
* Plug the HWI dispatcher table.
*/
Void HWI_dispatchPlug(Int vecid, Fxn fxn, HWI_Attrs *attrs)
{
Hwi_Params hwiParams;
Hwi_Handle hwi;
Error_Block eb;
if (attrs == NULL) {
attrs = &HWI_ATTRS;
}
Hwi_Params_init(&hwiParams);
Error_init(&eb);
if (attrs->ierMask == 1) {
hwiParams.maskSetting = Hwi_MaskingOption_SELF;
}
else {
hwiParams.maskSetting = Hwi_MaskingOption_BITMASK;
}
hwiParams.disableMask = hwiParams.restoreMask = attrs->ierMask;
hwiParams.arg = attrs->arg;
hwiParams.enableInt = FALSE;
/*
* Tell the BIOS6 dispatcher not to ACK interrupts because the BIOS5
* dispatcher doesn't ACK interrupts
*/
hwiParams.enableAck = FALSE;
hwi = Hwi_getHandle(vecid);
if (hwi == NULL) {
Hwi_create(vecid, (Hwi_FuncPtr)fxn, &hwiParams, &eb);
}
else {
Hwi_reconfig(hwi, (Hwi_FuncPtr)fxn, &hwiParams);
}
}
