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ms5611: try to measure the performance cost of I2C timeouts

This commit is contained in:
Andrew Tridgell 2013-02-19 14:45:45 +11:00
parent 4a15eef602
commit e896944adc
1 changed files with 7 additions and 0 deletions
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7
apps/drivers/ms5611/ms5611.cpp
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@ -144,6 +144,7 @@ private:
orb_advert_t _baro_topic;
perf_counter_t _sample_perf;
perf_counter_t _measure_perf;
perf_counter_t _comms_errors;
perf_counter_t _buffer_overflows;
@ -274,6 +275,7 @@ MS5611::MS5611(int bus) :
_msl_pressure(101325),
_baro_topic(-1),
_sample_perf(perf_alloc(PC_ELAPSED, "ms5611_read")),
_measure_perf(perf_alloc(PC_ELAPSED, "ms5611_measure")),
_comms_errors(perf_alloc(PC_COUNT, "ms5611_comms_errors")),
_buffer_overflows(perf_alloc(PC_COUNT, "ms5611_buffer_overflows"))
{
@ -647,6 +649,8 @@ MS5611::measure()
{
int ret;
perf_begin(_measure_perf);
/*
* In phase zero, request temperature; in other phases, request pressure.
*/
@ -664,6 +668,8 @@ MS5611::measure()
if (OK != ret)
perf_count(_comms_errors);
perf_end(_measure_perf);
return ret;
}
@ -689,6 +695,7 @@ MS5611::collect()
ret = transfer(&cmd, 1, &data[0], 3);
if (ret != OK) {
perf_count(_comms_errors);
perf_end(_sample_perf);
return ret;
}