From aebd9701a78d267cb264d400804b02c5b7a00e9a Mon Sep 17 00:00:00 2001
From: Damien George
Date: Wed, 11 Apr 2018 14:08:23 +1000
Subject: stm32/adc: Optimise read_timed_multi() by caching buffer pointers.

---
 docs/library/pyb.ADC.rst | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'docs')

diff --git a/docs/library/pyb.ADC.rst b/docs/library/pyb.ADC.rst
index c2d09ad40..1256c6a3c 100644
--- a/docs/library/pyb.ADC.rst
+++ b/docs/library/pyb.ADC.rst
@@ -125,9 +125,10 @@ Methods
 
        The maximum rate depends on factors including the data width and the
        number of ADC's being read. In testing two ADC's were sampled at a timer
-       rate of 140KHz without overrun. Samples were missed at 180KHz. At high
-       sample rates disabling interrupts for the duration can reduce the risk
-       of sporadic data loss.
+       rate of 210kHz without overrun. Samples were missed at 215kHz.  For three
+       ADC's the limit is around 140kHz, and for four it is around 110kHz.
+       At high sample rates disabling interrupts for the duration can reduce the
+       risk of sporadic data loss.
 
 The ADCAll Object
 -----------------
-- 
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