101-1017 Rabbit Semiconductor, 101-1017 Datasheet - Page 68
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101-1017
Manufacturer Part Number
101-1017
Description
KIT DEV POWERCORE 3800 INT'L
Manufacturer
Rabbit Semiconductor
Series
PowerCore FLEXr
Type
MPU Moduler
Datasheet
1.101-1007.pdf
(240 pages)
Specifications of 101-1017
Contents
RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
Processor To Be Evaluated
PowerCore 38xx
Interface Type
Ethernet
For Use With/related Products
RCM3800
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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DESCRIPTION
60
float anaInVolts(int channel);
Reads the state of an external analog channel and uses the previously set calibration
constants to convert the value to volts.
The state being read is located in memory, and is updated by the A/D converter inter-
rupt. The update interval is as follows:
There is a macro/hook in the interrupt service routine for you add your A/D converter
MUX control code. The following steps explain how to implement round-robin MUX
control.
• For single-channel designs, the state of the analog channel will be updated approximately
• For multiple-channel designs, the update interval will depend on the number of channels
1. Set the maximum number of external A/D converter channels:
2. Create a pointer to your custom MUX control routine by defining
3. Write your adcmux routine to switch the hardware and adc_mux_channel index to
every 2.5 ms.
you have and the way you have implemented your MUX control (round-robin vs. random
channel selection):
#define MAX_ADCHANNELS <new value>
#define ADC_MUX_CNTRL call adcmux
This step will insert a call to the adcmux routine at the end of interrupt service routine.
This will allow the channel to be ready for the next conversion cycle.
the next A/D converter channel. Make sure you initialize your I/O before executing the
anaInExternalInit function.
the round-robin update interval will be the number of channels times 2.5 ms.
the random-channel-selection update interval will be >2.5 ms for the initial channel
selection and 2.5 ms thereafter.
anaInVolts
PowerCore FLEX
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