DocID024597 Rev 5 559/1830
RM0351 Analog-to-digital converters (ADC)
614
Auto-injected mode
It is possible to oversample auto-injected sequences and have all conversions results stored
in registers to save a DMA resource. This mode is available only with both regular and
injected oversampling active: JAUTO = 1, ROVSE = 1 and JOVSE = 1, other combinations
are not supported. The ROVSM bit is ignored in auto-injected mode. The Figure 117 below
shows how the conversions are sequenced.
Figure 117. Oversampling in auto-injected mode
It is possible to have also the triggered mode enabled, using the TROVS bit. In this case,
the ADC must be configured as following: JAUTO = 1, DISCEN = 0, JDISCEN = 0, ROVSE
= 1, JOVSE = 1 and TROVSE = 1.
Dual ADC modes supported when oversampling
It is possible to have oversampling enabled when working in dual ADC configuration, for the
injected simultaneous mode and regular simultaneous mode. In this case, the two ADCs
must be programmed with the very same settings (including oversampling).
All other dual ADC modes are not supported when either regular or injected oversampling is
enabled (ROVSE = 1 or JOVSE = 1).
Combined modes summary
The Table 115 below summarizes all combinations, including modes not supported.
Table 115. Oversampler operating modes summary
Regular Over-
sampling
ROVSE
Injected Over-
sampling
JOVSE
Oversampler
mode
ROVSM
0 = continued
1 = resumed
Triggered
Regular mode
TROVS
Comment
1 0 0 0 Regular continued mode
1 0 0 1 Not supported
1 0 1 0 Regular resumed mode
1011
Triggered regular resumed
mode
1 1 0 X Not supported
1110
Injected and regular resumed
mode
1 1 1 1 Not supported
0 1 X X Injected oversampling
069
5HJXODUFKDQQHOV 1
-$872 5296( -296( 52960 ;75296
1
1
1
,
,
,
,
-
-
-
-
.
.
.
.
/
/
/
/
1
1
1
1
,QMHFWHGFKDQQHOV
To Next Page
Loading...
Need help?
General
