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Fixed 'shaking' readings from ADC/ADC12

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This commit is contained in:
Cristian Maglie
2011-11-27 19:15:33 +01:00
parent b853464da8
commit 037ecd3e3e
4 changed files with 30 additions and 18 deletions
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8
hardware/sam/variants/arduino_due/variant.cpp
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@ -350,8 +350,8 @@ extern void init( void )
* prescal: ADCClock = MCK / ( (PRESCAL+1) * 2 ) => 64MHz / ((4+1)*2) = 6.4MHz
* ADC clock = 6.4 MHz
*/
adc_init( ADC, SystemCoreClock, 6400000, 10 ) ;
adc_configure_timing( ADC, 1200 ) ;
adc_init( ADC, SystemCoreClock, ADC_FREQ_MAX, ADC_STARTUP ) ;
adc_configure_timing( ADC, 15 ) ;
adc_configure_trigger( ADC, ADC_TRIG_SW ) ;
adc_disable_interrupt( ADC, 0xFFFFFFFF ) ; /* Disable all adc interrupt. */
adc_disable_channel( ADC, ADC_ALL_CHANNEL ) ;
@ -366,8 +366,8 @@ extern void init( void )
* prescal: ADCClock = MCK / ( (PRESCAL+1) * 2 ) => 64MHz / ((4+1)*2) = 6.4MHz
* ADC clock = 6.4 MHz
*/
adc12_init( ADC12B, SystemCoreClock, 6400000, 10, 1200 ) ;
adc12_configure_timing( ADC12B, 1200 ) ;
adc12_init( ADC12B, SystemCoreClock, ADC12_FREQ_MAX, ADC12_STARTUP_FAST, 1 ) ;
adc12_configure_timing( ADC12B, 15 ) ;
adc12_configure_trigger( ADC12B, ADC_TRIG_SW ) ;
adc12_disable_interrupt( ADC12B, 0xFFFFFFFF ) ; /* Disable all adc interrupt. */
adc12_disable_channel( ADC12B, ADC_ALL_CHANNEL ) ;