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Change ADC1 to reduce number of interrupts. 

Disable interrupts for ADC1. 
Every time ADC0 interrupts (24Khz) read the current conversion from ADC1 and software trigger a new one. 
This way there will always be an ADC1 conversion available whenever ADC0 interrupts.
This commit is contained in:
g4eml 2016-12-22 22:27:10 +00:00 committed by GitHub
parent c69c573000
commit 957d0d8d34
1 changed files with 18 additions and 14 deletions
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28
IOTeensy.cpp
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@ -117,7 +117,6 @@ void CIO::startInt()
sum1 = (sum1 / 2U) | 0x8000U; sum1 = (sum1 / 2U) | 0x8000U;
ADC1_PG = sum1; ADC1_PG = sum1;
NVIC_ENABLE_IRQ(IRQ_ADC1);
#endif #endif
#if defined(EXTERNAL_OSC) #if defined(EXTERNAL_OSC)
@ -162,25 +161,30 @@ void CIO::interrupt(uint8_t source)
if ((ADC0_SC1A & ADC_SC1_COCO) == ADC_SC1_COCO) { if ((ADC0_SC1A & ADC_SC1_COCO) == ADC_SC1_COCO) {
sample = ADC0_RA; sample = ADC0_RA;
m_rxBuffer.put(sample, control); m_rxBuffer.put(sample, control);
#if defined(SEND_RSSI_DATA)
ADC1_SC1A = ADC_SC1_AIEN | PIN_RSSI;
#else
m_rssiBuffer.put(0U);
#endif
} }
m_watchdog++;
}
#if defined(SEND_RSSI_DATA) #if defined(SEND_RSSI_DATA)
if (source == 1U) { // ADC1
if ((ADC1_SC1A & ADC_SC1_COCO) == ADC_SC1_COCO) { if ((ADC1_SC1A & ADC_SC1_COCO) == ADC_SC1_COCO) {
uint16_t rssi = ADC1_RA; uint16_t rssi = ADC1_RA;
m_rssiBuffer.put(rssi); m_rssiBuffer.put(rssi);
} }
} else {
m_rssiBuffer.put(0U);
}
ADC1_SC1A = ADC_SC1_AIEN | PIN_RSSI; //start the next RSSI conversion
#else
m_rssiBuffer.put(0U);
#endif #endif
m_watchdog++;
}
} }
bool CIO::getCOSInt() bool CIO::getCOSInt()