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/*
* libmostvolume example
*
* Copyright (C) 2017 Microchip Technology Germany II GmbH & Co. KG
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You may also obtain this software under a propriety license from Microchip.
* Please contact Microchip for further information.
*
*/
#include "device_container.h"
#include "callbacks.h"
#include "ucs_api.h"
#define DEVCONT_TIME_RETRIGGER (uint16_t)100U
#define DEVCONT_TIME_NOW (uint16_t)0U
#define DEVCONT_TIME_STOP (uint16_t)0xFFFFU
#define DEVCONT_UNUSED(a) (a = a)
CDeviceContainer::CDeviceContainer()
{
this->_idx_processing = 0U;
this->_ucs_inst_ptr = NULL;
this->_values_pptr = NULL;
this->_values_sz = 0U;
this->_tx_busy = false;
this->_service_requested = false;
this->_service_fptr = NULL;
}
CDeviceContainer::~CDeviceContainer()
{
Clb_RegisterI2CResultCB(NULL, NULL); /* avoid that the result callback is fired after object is destroyed */
}
void CDeviceContainer::RegisterValues(CDeviceValue** list_pptr, uint16_t list_sz)
{
this->_idx_processing = 0U;
this->_values_pptr = list_pptr;
this->_values_sz = list_sz;
this->_tx_busy = false;
if ((list_pptr != NULL) && (list_sz > 0U))
{
this->_idx_processing = list_sz - 1U;
}
}
void CDeviceContainer::ClearValues()
{
this->_idx_processing = 0U;
this->_values_pptr = NULL;
this->_values_sz = 0U;
this->_tx_busy = false;
}
void CDeviceContainer::SetValue(uint16_t key, uint8_t value)
{
uint16_t idx;
bool req_update = false;
for (idx = 0U; idx < this->_values_sz; idx++)
{
if (this->_values_pptr[idx]->GetKey() == key)
{
this->_values_pptr[idx]->SetValue(value);
if (this->_values_pptr[idx]->RequiresUpdate())
{
req_update = true;
}
}
}
if (req_update && (!this->_tx_busy))
{
RequestService(DEVCONT_TIME_NOW); //fire callback
}
}
void CDeviceContainer::IncrementProcIndex(void)
{
if ((_idx_processing + 1U) >= this->_values_sz)
{
_idx_processing = 0U;
}
else
{
_idx_processing++;
}
}
// starts at latest position, searches next value to update, waits until response
void CDeviceContainer::Update()
{
uint16_t cnt;
bool error = false;
_service_requested = false;
if (this->_ucs_inst_ptr == NULL)
{
return;
}
if (this->_tx_busy)
{
return;
}
for (cnt = 0u; cnt < this->_values_sz; cnt++) /* just run one cycle */
{
IncrementProcIndex();
if (_values_pptr[_idx_processing]->RequiresUpdate())
{
if (_values_pptr[_idx_processing]->FireUpdateMessage())
{
Clb_RegisterI2CResultCB(&OnI2cResult, this);
this->_tx_busy = true;
break;
}
else
{
error = true;
}
}
}
if (error)
{
RequestService(DEVCONT_TIME_RETRIGGER);
}
}
void CDeviceContainer::HandleI2cResult(Ucs_I2c_Result_t result)
{
DEVCONT_UNUSED(result);
this->_tx_busy = false;
this->RequestService(DEVCONT_TIME_NOW);
}
void CDeviceContainer::OnI2cResult(Ucs_I2c_Result_t result, void *obj_ptr)
{
((CDeviceContainer*)obj_ptr)->HandleI2cResult(result);
}
void CDeviceContainer::RequestService(uint16_t timeout)
{
if (!_service_requested)
{
_service_requested = true;
if (_service_fptr != NULL)
{
_service_fptr(timeout);
}
}
}
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