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voltage & current scaling: use px4_arch_adc_dn_fullcount() instead of 4096

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Fixes the scaling on h7 boards (the ADC has 16 bits resolution).
This commit is contained in:
Beat Küng
2019-11-21 08:19:59 +01:00
parent b63044393e
commit 4b290c4903
4 changed files with 51 additions and 2 deletions
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src/modules/battery_status/parameters.cpp
+3 -2
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@@ -40,6 +40,7 @@
#include "parameters.h"
#include <px4_platform_common/log.h>
#include <drivers/drv_adc.h>
namespace battery_status
{
@@ -67,7 +68,7 @@ int update_parameters(const ParameterHandles &parameter_handles, Parameters &par
} else if (parameters.battery_voltage_scaling < 0.0f) {
/* apply scaling according to defaults if set to default */
parameters.battery_voltage_scaling = (3.3f / 4096);
parameters.battery_voltage_scaling = (3.3f / px4_arch_adc_dn_fullcount());
param_set_no_notification(parameter_handles.battery_voltage_scaling, &parameters.battery_voltage_scaling);
}
@@ -77,7 +78,7 @@ int update_parameters(const ParameterHandles &parameter_handles, Parameters &par
} else if (parameters.battery_current_scaling < 0.0f) {
/* apply scaling according to defaults if set to default */
parameters.battery_current_scaling = (3.3f / 4096);
parameters.battery_current_scaling = (3.3f / px4_arch_adc_dn_fullcount());
param_set_no_notification(parameter_handles.battery_current_scaling, &parameters.battery_current_scaling);
}