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HAL_ChibiOS: cope with having no ADC inputs

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This commit is contained in:
Andrew Tridgell 2018-02-04 20:36:36 +11:00
parent 87389e0fdc
commit d191b37520
1 changed files with 5 additions and 2 deletions
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7
libraries/AP_HAL_ChibiOS/AnalogIn.cpp
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@ -178,7 +178,7 @@ AnalogIn::AnalogIn() :
*/ */
void AnalogIn::adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n) void AnalogIn::adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n)
{ {
if (buffer != &samples[0]) { if (buffer != samples) {
return; return;
} }
for (uint8_t i = 0; i < ADC_DMA_BUF_DEPTH; i++) { for (uint8_t i = 0; i < ADC_DMA_BUF_DEPTH; i++) {
@ -194,6 +194,9 @@ void AnalogIn::adccallback(ADCDriver *adcp, adcsample_t *buffer, size_t n)
*/ */
void AnalogIn::init() void AnalogIn::init()
{ {
if (ADC_GRP1_NUM_CHANNELS == 0) {
return;
}
adcStart(&ADCD1, NULL); adcStart(&ADCD1, NULL);
memset(&adcgrpcfg, 0, sizeof(adcgrpcfg)); memset(&adcgrpcfg, 0, sizeof(adcgrpcfg));
adcgrpcfg.circular = true; adcgrpcfg.circular = true;
@ -219,7 +222,7 @@ void AnalogIn::init()
adcgrpcfg.sqr1 |= chan << (5*(i-12)); adcgrpcfg.sqr1 |= chan << (5*(i-12));
} }
} }
adcStartConversion(&ADCD1, &adcgrpcfg, &samples[0], ADC_DMA_BUF_DEPTH); adcStartConversion(&ADCD1, &adcgrpcfg, samples, ADC_DMA_BUF_DEPTH);
} }
/* /*