#include "sns_water.h"
static uint8_t volatile sns_water_status = LOW;
static uint8_t sns_water_ReportInterval = (uint8_t)sns_water_SEND_PERIOD_S;
static uint32_t volatile sns_water_TickCnt=0;
static uint32_t volatile sns_water_TimePrevTick;
static uint32_t volatile sns_water_Buffer[4]= {0x0000ffff,0x0000ffff,0x0000ffff,0x0000ffff};
static uint8_t volatile sns_water_BufPointer=0;
static uint32_t volatile sns_water_StoreCnt=0;
StdCan_Msg_t txMsg;
#if sns_water_USEEEPROM==1
#include "sns_water_eeprom.h"
struct eeprom_sns_water EEMEM eeprom_sns_water =
{
{
(uint8_t)sns_water_SEND_PERIOD_S, // reportInterval
0, // VolumeCounterUpper
0 // VolumeCounterLower
},
0 // crc, must be a correct value, but this will also be handled by the EEPROM module or make scripts
};
#endif
void sns_water_Init(void)
{
#if sns_water_USEEEPROM==1
if (EEDATA_OK)
{ // Use stored data to set initial values for the module
sns_water_ReportInterval = eeprom_read_byte(EEDATA.reportInterval);
sns_water_TickCnt = eeprom_read_word(EEDATA16.VolumeCounterLower);
sns_water_TickCnt += (((uint32_t)(eeprom_read_word(EEDATA16.VolumeCounterUpper)))<<16);
} else
{ //The CRC of the EEPROM is not correct, store default values and update CRC
eeprom_write_byte_crc(EEDATA.reportInterval, sns_water_SEND_PERIOD_S, WITHOUT_CRC);
eeprom_write_word_crc(EEDATA16.VolumeCounterUpper, 0, WITHOUT_CRC);
eeprom_write_word_crc(EEDATA16.VolumeCounterLower, 0, WITHOUT_CRC);
EEDATA_UPDATE_CRC;
}
#endif
ADC_Init();
sns_water_TimePrevTick = Timer_GetTicks();
Timer_SetTimeout(sns_water_ADPOLL_TIMER, sns_water_ADPOLL_PERIOD_MS, TimerTypeFreeRunning, 0);
Timer_SetTimeout(sns_water_SEND_TIMER, sns_water_SEND_PERIOD_S*1000, TimerTypeFreeRunning, 0);
uint16_t ADvalue = ADC_Get(sns_water_AD_CHANNEL);
if (ADvalue > (sns_water_HIGH_THRESHOLD_MV*1024UL/5000UL))
{
sns_water_status = HIGH;
}
StdCan_Set_class(txMsg.Header, CAN_MODULE_CLASS_SNS);
StdCan_Set_direction(txMsg.Header, DIRECTIONFLAG_FROM_OWNER);
txMsg.Header.ModuleType = CAN_MODULE_TYPE_SNS_WATER;
txMsg.Header.ModuleId = sns_water_ID;
txMsg.Header.Command = CAN_MODULE_CMD_PHYSICAL_FLOW;
txMsg.Length = 6;
}
void sns_water_Process(void)
{
/*
Notes
maybe its better to skip the poll timer and always poll when in process
*/
uint8_t oldstatus = sns_water_status;
if (Timer_Expired(sns_water_ADPOLL_TIMER))
{
uint16_t ADvalue = ADC_Get(sns_water_AD_CHANNEL);
if (sns_water_status == LOW && ADvalue > (sns_water_HIGH_THRESHOLD_MV*1024UL/5000UL))
{
sns_water_status = HIGH;
}
else if (sns_water_status == HIGH && ADvalue < (sns_water_LOW_THRESHOLD_MV*1024UL/5000UL))
{
sns_water_status = LOW;
}
}
/* If status changed == one tick */
if (oldstatus != sns_water_status)
{
sns_water_TickCnt += 1;
sns_water_Buffer[sns_water_BufPointer] = Timer_GetTicks() - sns_water_TimePrevTick;
if (sns_water_BufPointer++ == 4)
{
sns_water_BufPointer = 0;
}
sns_water_TimePrevTick = Timer_GetTicks();
#if sns_water_USEEEPROM==1
if ((sns_water_TickCnt % 2048) == 0)
{
eeprom_write_word_crc(EEDATA16.VolumeCounterUpper, (uint16_t)((sns_water_TickCnt>>16) & 0xffff), WITHOUT_CRC);
eeprom_write_word_crc(EEDATA16.VolumeCounterLower, (uint16_t)(sns_water_TickCnt & 0xffff), WITH_CRC);
}
#endif
}
if (Timer_Expired(sns_water_SEND_TIMER))
{
uint32_t flow4 = 0;
for (uint8_t i = 0; i<4;i++) {
flow4 += sns_water_Buffer[i];
}
flow4 = flow4/4;
/* The flow is ml per tick / time between ticks */
flow4 = sns_water_UL_PER_TICK/flow4;
txMsg.Data[0] = (uint8_t)((flow4>>8) & 0xff);
txMsg.Data[1] = (uint8_t)(flow4 & 0xff);
txMsg.Data[5] = (uint8_t)(sns_water_TickCnt*sns_water_UL_PER_TICK/1000) & 0xff;
txMsg.Data[4] = (uint8_t)((sns_water_TickCnt*sns_water_UL_PER_TICK/1000) >> 8) & 0xff;
txMsg.Data[3] = (uint8_t)((sns_water_TickCnt*sns_water_UL_PER_TICK/1000) >> 16) & 0xff;
txMsg.Data[2] = (uint8_t)((sns_water_TickCnt*sns_water_UL_PER_TICK/1000) >> 24) & 0xff;
#if CAN_PRINTF==1
// txMsg.Data[5] = (uint8_t)sns_water_TickCnt & 0xff;
// txMsg.Data[4] = (uint8_t)(sns_water_TickCnt >> 8) & 0xff;
// txMsg.Data[3] = (uint8_t)(sns_water_TickCnt >> 16) & 0xff;
// txMsg.Data[2] = (uint8_t)(sns_water_TickCnt >> 24) & 0xff;
#endif
while (StdCan_Put(&txMsg) != StdCan_Ret_OK);
/* TODO How to handle no flow? (means no ticks, no new time-diffs) */
/* This solution starts to fill buffer with older values if ticks come in slower than we send out data */
if (Timer_GetTicks() - sns_water_TimePrevTick > sns_water_SEND_PERIOD_S*1000)
{
sns_water_Buffer[sns_water_BufPointer] = Timer_GetTicks() - sns_water_TimePrevTick;
if (sns_water_BufPointer++ == 4)
{
sns_water_BufPointer = 0;
}
}
}
}
void sns_water_HandleMessage(StdCan_Msg_t *rxMsg)
{
#if 0
if ( StdCan_Ret_class(rxMsg->Header) == CAN_MODULE_CLASS_SNS &&
StdCan_Ret_direction(rxMsg->Header) == DIRECTIONFLAG_FROM_OWNER &&
rxMsg->Header.ModuleType == CAN_MODULE_TYPE_SNS_WATER &&
rxMsg->Header.ModuleId == sns_water_ID)
{
switch (rxMsg->Header.Command)
{
case CAN_CMD_MODULE_DUMMY:
break;
}
}
#endif
}
void sns_water_List(uint8_t ModuleSequenceNumber)
{
StdCan_Msg_t txMsg;
StdCan_Set_class(txMsg.Header, CAN_MODULE_CLASS_SNS);
StdCan_Set_direction(txMsg.Header, DIRECTIONFLAG_FROM_OWNER);
txMsg.Header.ModuleType = CAN_MODULE_TYPE_SNS_WATER;
txMsg.Header.ModuleId = sns_water_ID;
txMsg.Header.Command = CAN_MODULE_CMD_GLOBAL_LIST;
txMsg.Length = 6;
uint32_t HwId=BIOS_GetHwId();
txMsg.Data[0] = HwId&0xff;
txMsg.Data[1] = (HwId>>8)&0xff;
txMsg.Data[2] = (HwId>>16)&0xff;
txMsg.Data[3] = (HwId>>24)&0xff;
txMsg.Data[4] = NUMBER_OF_MODULES;
txMsg.Data[5] = ModuleSequenceNumber;
while (StdCan_Put(&txMsg) != StdCan_Ret_OK);
}