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Bounds correctness for AnalogIn_IIO

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Oleksiy Protas 2023-12-10 22:44:41 +02:00 committed by Andrew Tridgell
parent ac86bd8d21
commit cadd121401
1 changed files with 7 additions and 1 deletions
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8
libraries/AP_HAL_Linux/AnalogIn_IIO.cpp
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@ -29,6 +29,8 @@ AnalogSource_IIO::AnalogSource_IIO(int16_t pin, float initial_value, float volta
void AnalogSource_IIO::init_pins(void) void AnalogSource_IIO::init_pins(void)
{ {
static_assert(ARRAY_SIZE(AnalogSource_IIO::analog_sources) == ARRAY_SIZE(fd_analog_sources), "AnalogIn_IIO channels count mismatch");
char buf[100]; char buf[100];
for (unsigned int i = 0; i < ARRAY_SIZE(AnalogSource_IIO::analog_sources); i++) { for (unsigned int i = 0; i < ARRAY_SIZE(AnalogSource_IIO::analog_sources); i++) {
// Construct the path by appending strings // Construct the path by appending strings
@ -44,7 +46,11 @@ void AnalogSource_IIO::init_pins(void)
*/ */
void AnalogSource_IIO::select_pin(void) void AnalogSource_IIO::select_pin(void)
{ {
_pin_fd = fd_analog_sources[_pin]; if (0 <= _pin && (size_t)_pin < ARRAY_SIZE(fd_analog_sources)) {
_pin_fd = fd_analog_sources[_pin];
} else {
_pin_fd = -1;
}
} }
float AnalogSource_IIO::read_average() float AnalogSource_IIO::read_average()