Very simple, because the LPC1114 features a hardware scan mode,
which automatically scans a given set of pins in freerunning mode
and stores all the values separately. No need for an interrupt!
Not yet done: configure not PIO1_0 and PIO1_1, but the pins
actually defined in the board file.
For testing, add this to ifclock(clock_flag_1s) in clock.c:
uint8_t i;
for (i = 0; i <= 7; i++) {
sersendf_P(PSTR("%lu "), analog_read(i));
}
serial_writechar('\n');
This should print all 8 ADC values repeatedly. Only two pins are
actually set up, these values should change depending on the
thermistor temperature. More precisely: depending on the voltage
on the pin.
Test code which wants to customize config.h can do so without
touching config.h itself by wrapping config.h in a macro variable
which is passed in to the compiler. It defaults to "config.h" if
no override is provided.
This change would break makefile dependency checking since the selection
of a different header file on the command line is not noticed by make
as a build-trigger. To solve this, we add a layer to the BUILDDIR path
so build products are now specific to the USER_CONFIG choice if it is
not "config.h".
Saves 10 bytes RAM and 16 bytes binary size on an 1284P (8 ADC
channels) running two sensors. Should also be a bit faster, as one
loop runs fewer iterations.
Also, checking for NUM_TEMP_SENSORS was a mistake, as temp sensors
_not_ using an analog pin exist. Extreme case is, temp sensors
exist, but zero ADC channels are used.
Nico Tonnhofer
Markus Hitter
Phil Hord
Mikko Sivulainen
Bas Laarhoven
Michael Moon
Markus Amsler
Stephan Walter
madscifi
dps.lwk