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AN1711 датащи(PDF) 37 Page - STMicroelectronics

номер детали AN1711
подробное описание детали  SOFTWARE TECHNIQUES FOR COMPENSATING ST7 ADC ERRORS
PDF  40 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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AN1711 датащи(HTML) 37 Page - STMicroelectronics

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SOFTWARE TECHNIQUES FOR COMPENSATING ST7 ADC ERRORS
5.4 INTERRUPTS
Only one interrupt is used for Timer A. This is used for demonstrating “Wait for interrupt”. You
are advised to make necessary changes in the software when using this technique for ex-
ample, in PRM file etc.
5.5 CODE SIZE AND EXECUTION TIME
The following table summarises the approximate code size and execution time. Depending on
the compiler and memory placement, these values can change.
The RAM requirements are not provided and you can choose to place the variables as global
or local. For techniques which require arrays, the size of array will define the RAM require-
ments and it is left up to the user.
Table 6. Code size and execution time
No.
Function Name
Code size
(Bytes)
Execution
time
(us)
Averaging technique
1.
ADC_get_avgdata
63
311
Averaging using queue implementation
2.
ADC_fill_Q
68
178
3.
ADC_avg_Q
104
31
Noise filtering technique
4.
ADC_getdata_filter_noise
155
717
Histogram technique
5.
ADC_getdata_histgrm
669
6550
Execute from RAM
6.
ADC_do_Conversion
15
10
7.
copy_code_ROM_2_RAM
44
109
8.
ADC_get_avg_execRAM
97
541
Zone compensation
9.
ADC_zone_compensation
149
24
Wait for Interrupt technique
10.
TimerA_Init
19
4
11.
ADC_conversion_WFI
14
36**



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