- Fri Jun 17, 2016 3:21 am
#49318
@forlotto: This is so AWESOME!!! I figured out the library and what it is doing. Most of my assumptions were correct (except that there is no device code look-up table as it's derived with each call by brute force). It's no mystery to me at all now. I would propose addition of two functions. One to return all device codes on the wire (in a space separated string for easy handling with word()) and one to retrieve temperature readings by device code. Please understand that I'm very rusty with the particular C like dialects in play here (spending most of my time with PHP and Javascript). These won't run as written, but you'll get the idea.
If these are written on the library level, they look different than if written as the BASIC interpreter code (which would use "sensor."). I haven't figured out how the arg[] array works yet or exactly how I should handle strings or if my "fictitious" conversion functions actually exist elsewhere already, but if I had more time, I think I could figure out how to do this straight in the BASIC code. I'm on a roll but 4:00am came too quickly.
forlotto wrote:}
else if ( fname == F("temp") && num_args > 0 ) {
// function temp(sensor #)
// set return value
sensors.requestTemperatures();
*value = sensors.getTempCByIndex(args[0]);
return PARSER_TRUE;
}
@forlotto: This is so AWESOME!!! I figured out the library and what it is doing. Most of my assumptions were correct (except that there is no device code look-up table as it's derived with each call by brute force). It's no mystery to me at all now. I would propose addition of two functions. One to return all device codes on the wire (in a space separated string for easy handling with word()) and one to retrieve temperature readings by device code. Please understand that I'm very rusty with the particular C like dialects in play here (spending most of my time with PHP and Javascript). These won't run as written, but you'll get the idea.
Code: Select all
void function getDevCodes()
{
DeviceAddress deviceAddress;
uint8_t index;
char* strptr;
// here we have to initialize strptr to the start of a character buffer
for (index=0; getAddress(deviceAddress,index); index++)
{
uint8ToHex(strptr,deviceAddress); // Fictitious function to convert 8 byte device code to 16 byte string and advance strptr
(*strptr++)=" "; // Add a space separator
}
if (index>0) strptr--; // Don't need a trailing space
(*strptr)="\0"; // Add 0 terminator
} // result is returned in character buffer as space separated device codes
function getTempByDevCode((string*)devCode)
{
DeviceAddress deviceAddress; // create 8 byte storage area for device code
hexToUint8( deviceAddress, devCode ); // Fictitious function to convert 16 byte hex character string to 8 byte address
return getTempC(deviceAddress);
}
If these are written on the library level, they look different than if written as the BASIC interpreter code (which would use "sensor."). I haven't figured out how the arg[] array works yet or exactly how I should handle strings or if my "fictitious" conversion functions actually exist elsewhere already, but if I had more time, I think I could figure out how to do this straight in the BASIC code. I'm on a roll but 4:00am came too quickly.
