/*-----------------------------------------------------------------------------
* send switch state change to clients
* - client address list is read from eeprom
* - if there is no confirmation from client within RESPONSE_TIMEOUT2
* the next client in list is processed
* - telegrams to clients without response are repeated again and again
* til telegrams to all clients in list are confirmed
* - if switchStateChanged occurs while client confirmations are missing
* actual client process is canceled and the new state telegram is sent
* to clients
*/
static void ProcessSwitch(uint8_t switchState) {
static uint8_t sActualClient = 0xff; /* actual client's index being processed */
static uint16_t sChangeTimeStamp;
TClient *pClient;
uint8_t i;
uint16_t actualTime16;
uint8_t actualTime8;
bool switchStateChanged;
bool startProcess;
if ((switchState ^ sSwitchStateOld) != 0) {
switchStateChanged = true;
} else {
switchStateChanged = false;
}
if (switchStateChanged) {
if (sActualClient < BUS_MAX_CLIENT_NUM) {
pClient = &sClient[sActualClient];
if (pClient->state == eWaitForConfirmation1) {
startProcess = false;
} else {
startProcess = true;
sSwitchStateOld = switchState;
}
} else {
startProcess = true;
sSwitchStateOld = switchState;
}
if (startProcess == true) {
sSwitchStateActual = switchState;
GET_TIME_MS16(sChangeTimeStamp);
/* set up client descriptor array */
sActualClient = 0;
pClient = &sClient[0];
for (i = 0; i < BUS_MAX_CLIENT_NUM; i++) {
pClient->address = eeprom_read_byte((const uint8_t *)(CLIENT_ADDRESS_BASE + i));
if (pClient->address != BUS_CLIENT_ADDRESS_INVALID) {
pClient->state = eInit;
} else {
pClient->state = eSkip;
}
pClient++;
}
}
}
if (sActualClient < BUS_MAX_CLIENT_NUM) {
GET_TIME_MS16(actualTime16);
if (((uint16_t)(actualTime16 - sChangeTimeStamp)) < RETRY_TIMEOUT2_MS) {
pClient = &sClient[sActualClient];
if (pClient->state == eConfirmationOK) {
/* get next client */
sActualClient = GetUnconfirmedClient(sActualClient);
if (sActualClient < BUS_MAX_CLIENT_NUM) {
pClient = &sClient[sActualClient];
} else {
/* we are ready */
}
}
switch (pClient->state) {
case eInit:
sTxBusMsg.type = eBusDevReqSwitchState;
sTxBusMsg.senderAddr = MY_ADDR;
sTxBusMsg.msg.devBus.receiverAddr = pClient->address;
sTxBusMsg.msg.devBus.x.devReq.switchState.switchState = sSwitchStateActual;
BusSend(&sTxBusMsg);
pClient->state = eWaitForConfirmation1;
GET_TIME_MS16(pClient->requestTimeStamp);
break;
case eWaitForConfirmation1:
actualTime8 = GET_TIME_MS;
if (((uint8_t)(actualTime8 - pClient->requestTimeStamp)) >= RESPONSE_TIMEOUT1_MS) {
pClient->state = eWaitForConfirmation2;
GET_TIME_MS16(pClient->requestTimeStamp);
}
break;
case eWaitForConfirmation2:
GET_TIME_MS16(actualTime16);
if (((uint16_t)(actualTime16 - pClient->requestTimeStamp)) >= RESPONSE_TIMEOUT2_MS) {
/* set client for next try after the other clients */
pClient->state = eInit;
/* try next client */
sActualClient = GetUnconfirmedClient(sActualClient);
}
break;
default:
break;
}
} else {
sActualClient = 0xff;
}
}
}
/*-----------------------------------------------------------------------------
* post state changes to registered bus clients
*/
static void CheckEvent(void) {
static uint8_t sActualClient = 0xff; /* actual client's index being processed */
static uint16_t sChangeTestTimeStamp;
TClient *pClient;
uint16_t actualTime16;
bool actValChanged;
static bool sNewClientCycleDelay = false;
static uint16_t sNewClientCycleTimeStamp;
TBusDevReqActualValueEvent *pActVal;
bool getNextClient;
uint8_t nextClient;
static uint16_t sCurPwmActVal[NUM_PWM_CHANNEL];
static bool sCurPwmState[NUM_PWM_CHANNEL];
uint8_t i;
uint8_t val8;
if (sNumClients == 0) {
return;
}
/* do the change detection not in each cycle */
GET_TIME_MS16(actualTime16);
if (((uint16_t)(actualTime16 - sChangeTestTimeStamp)) >= CHANGE_DETECT_CYCLE_TIME_MS) {
PwmGetAll(sCurPwmActVal, sizeof(sCurPwmActVal));
for (i = 0; i < NUM_PWM_CHANNEL; i++) {
PwmIsOn(i, &sCurPwmState[i]);
}
if ((memcmp(sCurPwmActVal, sOldPwmActVal, sizeof(sCurPwmActVal)) == 0) &&
(memcmp(sCurPwmState, sOldPwmState, sizeof(sCurPwmActVal)) == 0)) {
actValChanged = false;
} else {
actValChanged = true;
}
if (actValChanged) {
memcpy(sOldPwmActVal, sCurPwmActVal, sizeof(sOldPwmActVal));
memcpy(sOldPwmState, sCurPwmState, sizeof(sOldPwmState));
sActualClient = 0;
sNewClientCycleDelay = false;
InitClientState();
}
sChangeTestTimeStamp = actualTime16;
}
if (sActualClient == 0xff) {
return;
}
if (sNewClientCycleDelay) {
if (((uint16_t)(actualTime16 - sNewClientCycleTimeStamp)) < RETRY_CYCLE_TIME_MS) {
return;
} else {
sNewClientCycleDelay = false;
}
}
pClient = &sClient[sActualClient];
getNextClient = true;
switch (pClient->state) {
case eEventInit:
pActVal = &sTxBusMsg.msg.devBus.x.devReq.actualValueEvent;
sTxBusMsg.type = eBusDevReqActualValueEvent;
sTxBusMsg.senderAddr = MY_ADDR;
sTxBusMsg.msg.devBus.receiverAddr = pClient->address;
pActVal->devType = eBusDevTypePwm4;
memcpy(pActVal->actualValue.pwm4.pwm, sCurPwmActVal,
sizeof(pActVal->actualValue.pwm4.pwm));
val8 = 0;
for (i = 0; i < NUM_PWM_CHANNEL; i++) {
val8 |= sCurPwmState[i] ? 1 << i : 0;
}
pActVal->actualValue.pwm4.state = val8;
if (BusSend(&sTxBusMsg) == BUS_SEND_OK) {
pClient->state = eEventWaitForConfirmation;
pClient->requestTimeStamp = actualTime16;
} else {
getNextClient = false;
}
break;
case eEventWaitForConfirmation:
if ((((uint16_t)(actualTime16 - pClient->requestTimeStamp)) >= RESPONSE_TIMEOUT_MS) &&
(pClient->state != eEventMaxRetry)) {
if (pClient->curRetry < pClient->maxRetry) {
/* try again */
pClient->curRetry++;
getNextClient = false;
pClient->state = eEventInit;
} else {
pClient->state = eEventMaxRetry;
}
}
break;
case eEventConfirmationOK:
break;
default:
break;
}
if (getNextClient) {
nextClient = GetUnconfirmedClient(sActualClient);
if (nextClient <= sActualClient) {
sNewClientCycleDelay = true;
sNewClientCycleTimeStamp = actualTime16;
}
sActualClient = nextClient;
}
}
/*-----------------------------------------------------------------------------
* post state changes to registered bus clients
*/
static void ProcessSwitch(void) {
static uint8_t sActualClient = 0xff; /* actual client's index being processed */
static uint16_t sChangeTimeStamp;
TClient *pClient;
uint16_t actualTime16;
static bool sNewClientCycleDelay = false;
static uint16_t sNewClientCycleTimeStamp;
uint8_t rc;
bool getNextClient;
uint8_t nextClient;
bool switchStateChanged;
if (sNumClients == 0) {
return;
}
if ((sWindSwitch ^ sWindSwitchOld) != 0) {
switchStateChanged = true;
} else {
switchStateChanged = false;
}
/* do the change detection not in each cycle */
GET_TIME_MS16(actualTime16);
if (switchStateChanged) {
sChangeTimeStamp = actualTime16;
sActualClient = 0;
sNewClientCycleDelay = false;
InitClientState();
sWindSwitchOld = sWindSwitch;
}
if (sActualClient == 0xff) {
return;
}
if (sNewClientCycleDelay) {
if (((uint16_t)(actualTime16 - sNewClientCycleTimeStamp)) < RETRY_CYCLE_TIME_MS) {
return;
} else {
sNewClientCycleDelay = false;
}
}
pClient = &sClient[sActualClient];
getNextClient = true;
switch (pClient->state) {
case eInit:
sTxBusMsg.type = eBusDevReqSwitchState;
sTxBusMsg.senderAddr = MY_ADDR;
sTxBusMsg.msg.devBus.receiverAddr = pClient->address;
sTxBusMsg.msg.devBus.x.devReq.switchState.switchState = sWindSwitch;
rc = BusSend(&sTxBusMsg);
if (rc == BUS_SEND_OK) {
pClient->state = eWaitForConfirmation;
pClient->requestTimeStamp = actualTime16;
} else {
getNextClient = false;
}
break;
case eWaitForConfirmation:
if (((uint16_t)(actualTime16 - pClient->requestTimeStamp)) >= RESPONSE_TIMEOUT_MS) {
/* try once more */
pClient->state = eInit;
getNextClient = false;
}
break;
case eConfirmationOK:
break;
default:
break;
}
if (getNextClient) {
nextClient = GetUnconfirmedClient(sActualClient);
if (nextClient <= sActualClient) {
sNewClientCycleDelay = true;
sNewClientCycleTimeStamp = actualTime16;
}
sActualClient = nextClient;
}
if (((uint16_t)(actualTime16 - sChangeTimeStamp)) > RETRY_TIMEOUT_MS) {
sActualClient = 0xff; // stop
}
}
