uint8_t temperature_GetReading (tmprData *tr) {
r = temperature_InitOneShotReading();
if (r) {
tr->verification = r;
return r;
}
// temperature conversion time, typically 30ms
for (Timer2 = 4; Timer2; ); // Wait for 40ms to be sure
// read ambient temperature from the device
r = I2C_Start();
// len = sprintf(str, "\n\r I2C_Start: 0x%x\n\r", r);
// outputStringToUART0(str);
if (r == TW_START) {
r = I2C_Write(TCN75A_ADDR_WRITE); // address the device, say we are going to write
// len = sprintf(str, "\n\r I2C_Write(TCN75A_ADDR_WRITE): 0x%x\n\r", r);
// outputStringToUART0(str);
if (r == TW_MT_SLA_ACK) {
r = I2C_Write(TCN75A_TA);
// len = sprintf(str, "\n\r I2C_Write(TCN75A_CONFIG): 0x%x\n\r", r);
// outputStringToUART0(str);
if (r == TW_MT_DATA_ACK) {
r = I2C_Start(); // restart, prep to read
// len = sprintf(str, "\n\r I2C_Start: 0x%x\n\r", r);
// outputStringToUART0(str);
if (r == TW_REP_START) {
r = I2C_Write(TCN75A_ADDR_READ); // address the device, say we are going to read
// len = sprintf(str, "\n\r I2C_Write(TCN75A_ADDR_READ): 0x%x\n\r", r);
// outputStringToUART0(str);
if (r == TW_MR_SLA_ACK) {
tr->tmprHiByte = I2C_Read(1); // do ACK, because not last byte
tr->tmprLoByte = I2C_Read(0); // do NACK, since this is the last byte
// len = sprintf(str, "\n\r I2C_READ(tr->tmprHiByte): 0x%x\n\r", (tr->tmprHiByte));
// len = sprintf(str, "\n\r I2C_READ(tr->tmprHiByte): %d\n\r", (tr->tmprHiByte));
// outputStringToUART0(str);
I2C_Stop();
tr->verification = I2C_OK;
return I2C_OK;
} else { // could not address device to READ
I2C_Stop();
tr->verification = errNoI2CAddrAckRead;
return errNoI2CAddrAckRead;
}
} else { // could not reSTART
I2C_Stop();
tr->verification = errNoI2CRepStart;
return errNoI2CRepStart;
}
} else { // could not write to device
I2C_Stop();
tr->verification = errNoI2CDataAck;
return errNoI2CDataAck;
}
} else { // could not address device
I2C_Stop();
tr->verification = errNoI2CAddressAck;
return errNoI2CAddressAck;
}
// outputStringToUART0("\n\r STOP completed \n\r");
} else { // could not START
tr->verification = errNoI2CStart;
return errNoI2CStart;
}
}
void checkForCommands (void) {
char c;
char tmpStr[commandBufferLen];
while (uart0_char_waiting_in()) {
c = uart0_getchar();
if (c == 0x08) { // backspace
if (commandBufferPtr > commandBuffer) { // if there is anything to backspace
commandBufferPtr--;
}
}
if (c == 0x0d) // if carriage-return
c = 0x0a; // substitute linefeed
if (c == 0x0a) { // if linefeed, attempt to parse the command
stayRoused(120); // keep system roused
*commandBufferPtr++ = '\0'; // null terminate
switch (commandBuffer[0]) { // command is 1st char in buffer
case '$': { // an NMEA string from the GPS
// outputStringToUART1("\r\n NMEA from GPS \r\n");
strcpy(tmpStr, commandBuffer + 1);
if (!strncmp(tmpStr,"GPRMC",5)) {
outputStringToUART1(tmpStr);
outputStringToUART1("\r\n");
}
break;
}
case 'V': case 'v': { // show firmware version
outputStringToBothUARTs(versionString);
break;
}
case 'T': case 't': { // set time
// get info from commandBuffer before any UART output,
// because in some configurations any Tx feeds back to Rx
strcpy(tmpStr, commandBuffer + 1);
if (!isValidDateTime(tmpStr)) {
outputStringToUART0("\r\n Invalid timestamp\r\n");
break;
}
if (!isValidTimezone(tmpStr + 20)) {
outputStringToUART0("\r\n Invalid hour offset\r\n");
break;
}
outputStringToUART0("\r\n Time changed from ");
strcat(strJSON, "\r\n{\"timechange\":{\"from\":\"");
intTmp1 = rtc_readTime(&dt_RTC);
datetime_getstring(datetime_string, &dt_RTC);
strcat(strJSON, datetime_string);
outputStringToUART0(datetime_string);
datetime_getFromUnixString(&dt_tmp, tmpStr, 0);
rtc_setTime(&dt_tmp);
strcat(strJSON, "\",\"to\":\"");
outputStringToUART0(" to ");
datetime_getstring(datetime_string, &dt_tmp);
strcat(strJSON, datetime_string);
outputStringToUART0(datetime_string);
strcat(strJSON, "\",\"by\":\"hand\"}}\r\n");
outputStringToUART0("\r\n");
stateFlags1 |= (1<<writeJSONMsg); // log JSON message on next SD card write
stateFlags1 |= (1<<writeDataHeaders); // log data column headers on next SD card write
rtcStatus = rtcTimeManuallySet;
outputStringToUART0(strHdr);
intTmp1 = rtc_setupNextAlarm(&dt_CurAlarm);
timeZoneOffset = dt_tmp.houroffset;
timeFlags &= ~(1<<timeZoneWritten); // flag that time zone needs to be written
syncTimeZone(); // attempt to write the time zone; will retry later if e.g. power too low
//
/*
startTimer1ToRunThisManySeconds(30); // keep system Roused
*/
break;
}
case 'L': case 'l':
{ // experimenting with the accelerometer Leveling functions
uint8_t rs, val;
// outputStringToUART0("\r\n about to initialize ADXL345\r\n");
// rs = initializeADXL345();
// if (rs) {
// len = sprintf(str, "\n\r initialize failed: %d\n\r", rs);
// outputStringToUART0(str);
// break;
// }
// outputStringToUART0("\r\n ADXL345 initialized\r\n");
// bring out of low power mode
// use 100Hz for now ; bit 4 set = reduced power, higher noise
rs = setADXL345Register(ADXL345_REG_BW_RATE, 0x0a);
if (rs) {
len = sprintf(str, "\n\r could not set ADXL345_REG_BW_RATE: %d\n\r", rs);
outputStringToUART0(str);
break;
}
// for (iTmp = 1; iTmp < 6; iTmp++) { // try reading bit 7, INT_SOURCE.DATA_READY
// rs = readADXL345Register(ADXL345_REG_INT_SOURCE, &val);
// if (rs) {
// len = sprintf(str, "\n\r could not read ADXL345_REG_INT_SOURCE: %d\n\r", rs);
// outputStringToUART0(str);
// break;
// }
// if (val & (1 << 7)) {
// len = sprintf(str, "\n\r INT_SOURCE.DATA_READY set: 0x%x\n\r", val);
// } else {
// len = sprintf(str, "\n\r INT_SOURCE.DATA_READY clear: 0x%x\n\r", val);
// }
// outputStringToUART0(str);
// }
// outputStringToUART0("\r\n set ADXL345_REG_BW_RATE, 0x0a \r\n");
if (readADXL345Axes (&accelData)) {
outputStringToUART0("\r\n could not get ADXL345 data\r\n");
break;
}
// set low power bit (4) and 25Hz sampling rate, for 40uA current
rs = setADXL345Register(ADXL345_REG_BW_RATE, 0x18);
if (rs) {
len = sprintf(str, "\n\r could not set ADXL345_REG_BW_RATE: %d\n\r", rs);
outputStringToUART0(str);
break;
}
// len = sprintf(str, "\n\r X = %i, Y = %i, Z = %i\n\r", (unsigned int)((int)x1 << 8 | (int)x0),
// (unsigned int)((int)y1 << 8 | (int)y0), (unsigned int)((int)z1 << 8 | (int)z0));
len = sprintf(str, "\n\r X = %i, Y = %i, Z = %i\n\r", accelData.xWholeWord,
accelData.yWholeWord, accelData.zWholeWord);
outputStringToUART0(str);
break;
}
case 'C': case 'c':
{
len = sprintf(str, "\n\r test write to SD card 0x%x\n\r", (disk_initialize(0)));
intTmp1 = writeCharsToSDCard(str, len);
// sd card diagnostics
outputStringToUART0("\r\n test write to SD card\r\n");
// len = sprintf(str, "\n\r PINB: 0x%x\n\r", (PINB));
// send_cmd(CMD0, 0)
// len = sprintf(str, "\n\r CMD0: 0x%x\n\r", (send_cmd(CMD0, 0)));
break;
}
case 'P': case 'p':
{ // force SD card power off
outputStringToUART0("\r\n turning SD card power off\r\n");
turnSDCardPowerOff();
outputStringToUART0("\r\n SD card power turned off\r\n");
break;
}
case 'A': case 'a':
{
findADXL345();
break;
}
case 'F': case 'f':
{ // experimenting with temperature functions
if (!temperature_InitOneShotReading()) {
// temperature conversion time, typically 30ms
for (Timer2 = 4; Timer2; ); // Wait for 40ms to be sure
if (!temperature_GetReading(&temperatureReading)) {
len = sprintf(str, "\n\r Temperature: %d degrees C\n\r", (temperatureReading.tmprHiByte));
outputStringToUART0(str);
}
}
break;
}
//case 'I': case 'i':
//{ // experimenting with irradiance functions
//uint8_t result;
//result = getIrrReading(TSL2561_UpLooking, TSL2561_CHANNEL_BROADBAND, &irrReadings[0]);
//if (!result) {
//len = sprintf(str, "\n\r Val: %lu; Mult: %lu; Irr: %lu \n\r",
//(unsigned long)irrReadings[0].irrWholeWord, (unsigned long)irrReadings[0].irrMultiplier,
//(unsigned long)((unsigned long)irrReadings[0].irrWholeWord * (unsigned long)irrReadings[0].irrMultiplier));
//} else {
//len = sprintf(str, "\n\r Could not get irradiance, err code: %d", result);
//}
//outputStringToUART0(str);
//break;
//}
//
//case 'B': case 'b':
//{ // experimenting with reading the battery voltage using the Analog to Digital converter
//len = sprintf(str, "\n\r Hi byte: %d \n\r", readCellVoltage(&cellVoltageReading));
//outputStringToUART0(str);
//len = sprintf(str, "\n\r 16bit value: %d \n\r", cellVoltageReading.adcWholeWord);
//outputStringToUART0(str);
//
//
//break;
//}
//
//
case 'D': case 'd':
{ // output file 'D'ata (or 'D'ump)
outputStringToUART0("\r\n (data dump only works from Bluetooth)\r\n");
break;
}
// put other commands here
default:
{ // if no valid command, echo back the input
outputStringToUART0("\r\n> ");
outputStringToUART0(commandBuffer);
outputStringToUART0("\r\n");
// startTimer1ToRunThisManySeconds(30); // keep system Roused another two minutes
break;
}
} // switch (commandBuffer[0])
commandBuffer[0] = '\0';
commandBufferPtr = commandBuffer; // "empty" the command buffer
} else { // some other character
// ignore repeated linefeed (or linefeed following carriage return) or carriage return
if (!((c == 0x0a) || (c == 0x0a))) {
if (commandBufferPtr < (commandBuffer + commandBufferLen - 1)) // if there is room
*commandBufferPtr++ = c; // append char to the command buffer
}
} // done parsing character
} // while (1)
} // end of checkForCommands
