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AP_RSSI: check for valid analog pin

This commit is contained in:
Iampete1 2021-09-22 20:50:19 +01:00 committed by Andrew Tridgell
parent f667c098a2
commit 8f50eab6c2
1 changed files with 1 additions and 2 deletions
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3
libraries/AP_RSSI/AP_RSSI.cpp
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@ -176,10 +176,9 @@ uint8_t AP_RSSI::read_receiver_rssi_uint8()
// read the RSSI value from an analog pin - returns float in range 0.0 to 1.0
float AP_RSSI::read_pin_rssi()
{
if (!rssi_analog_source) {
if (!rssi_analog_source || !rssi_analog_source->set_pin(rssi_analog_pin)) {
return 0;
}
rssi_analog_source->set_pin(rssi_analog_pin);
float current_analog_voltage = rssi_analog_source->voltage_average();
return scale_and_constrain_float_rssi(current_analog_voltage, rssi_analog_pin_range_low, rssi_analog_pin_range_high);