diff options
| author | Keith Packard <keithp@keithp.com> | 2012-04-07 20:33:27 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2012-04-07 20:33:27 -0700 |
| commit | 98aa481741b8fbc617545beda3d295b53de90716 (patch) | |
| tree | 750b36242c5b22f3d4bbf896c2c48c04d51da437 /src/stm/ao_adc_stm.c | |
| parent | 0bce68e6a0abc19f49c573331164d13643c9bee5 (diff) | |
altos: Use 384 cycle ADC sample time
This is plenty fast, and provides nice stable readings.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/stm/ao_adc_stm.c')
| -rw-r--r-- | src/stm/ao_adc_stm.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/stm/ao_adc_stm.c b/src/stm/ao_adc_stm.c index 1722a9ec..d758e629 100644 --- a/src/stm/ao_adc_stm.c +++ b/src/stm/ao_adc_stm.c @@ -28,11 +28,11 @@ static uint8_t ao_adc_ready; (0 << STM_ADC_CR2_JWSTART) | \ (STM_ADC_CR2_JEXTEN_DISABLE << STM_ADC_CR2_JEXTEN) | \ (0 << STM_ADC_CR2_JEXTSEL) | \ - (1 << STM_ADC_CR2_ALIGN) | \ + (0 << STM_ADC_CR2_ALIGN) | \ (0 << STM_ADC_CR2_EOCS) | \ (1 << STM_ADC_CR2_DDS) | \ (1 << STM_ADC_CR2_DMA) | \ - (STM_ADC_CR2_DELS_NONE << STM_ADC_CR2_DELS) | \ + (STM_ADC_CR2_DELS_UNTIL_READ << STM_ADC_CR2_DELS) | \ (0 << STM_ADC_CR2_CONT) | \ (1 << STM_ADC_CR2_ADON)) @@ -168,10 +168,10 @@ ao_adc_init(void) (0 << STM_ADC_CR1_EOCIE ) | (0 << STM_ADC_CR1_AWDCH )); - /* 4 cycle sample time for everyone */ - stm_adc.smpr1 = 0; - stm_adc.smpr2 = 0; - stm_adc.smpr3 = 0; + /* 384 cycle sample time for everyone */ + stm_adc.smpr1 = 0x3ffff; + stm_adc.smpr2 = 0x3fffffff; + stm_adc.smpr3 = 0x3fffffff; stm_adc.sqr1 = ((AO_NUM_ADC - 1) << 20); stm_adc.sqr2 = 0; |