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Fix TRAB channel switching delay for trab_fkt.bin standalone applikation

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Patch by Martin Krause, 08 Nov 2005

In tsc2000_read_channel() the delay after setting the multiplexer
to a temperature channel is increased from 1,5 ms to 10 ms. This
is to allow the multiplexer inputs to stabilize after huge steps
of the input signal level.
This commit is contained in:
Wolfgang Denk 2006-06-16 16:14:28 +02:00
parent cd65a3dc87
commit cebd1fcec0
2 changed files with 8 additions and 1 deletions
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7
CHANGELOG
View File

@ -2,6 +2,13 @@
Changes since U-Boot 1.1.4:
======================================================================
* Fix TRAB channel switching delay for trab_fkt.bin standalone applikation
In tsc2000_read_channel() the delay after setting the multiplexer
to a temperature channel is increased from 1,5 ms to 10 ms. This
is to allow the multiplexer inputs to stabilize after huge steps
of the input signal level.
Patch by Martin Krause, 08 Nov 2005
* Adjust TQM5200 make targets
Make the automatic CS configuration the default.
The dedicated configurations CONFIG_TQM5200_AA, CONFIG_TQM5200_AB

2
board/trab/tsc2000.c
View File

@ -223,7 +223,7 @@ u16 tsc2000_read_channel (unsigned int channel)
u16 res;
tsc2000_set_mux(channel);
udelay(3 * TSC2000_DELAY_BASE);
udelay(20 * TSC2000_DELAY_BASE);
tsc2000_write(TSC2000_REG_ADC, 0x2036);
adc_wait_conversion_done ();