mirror of https://github.com/ArduPilot/ardupilot
AnalogSource: prevent a division by zero on zero ADC data
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@ -94,7 +94,11 @@ uint16_t AP_AnalogSource_Arduino::read_raw(void)
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// scaled read for board Vcc
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// scaled read for board Vcc
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uint16_t AP_AnalogSource_Arduino::read_vcc(void)
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uint16_t AP_AnalogSource_Arduino::read_vcc(void)
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{
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{
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return 1126400UL / read_raw();
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uint16_t v = read_raw();
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if (v == 0) {
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return 0;
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}
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return 1126400UL / v;
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}
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}
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// read the average 16 bit value since the last
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// read the average 16 bit value since the last
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