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- #include "vbus_sensor.h"
- #include "bsp/bsp.h"
- static vbus_t _vbus;
- void vbus_sensor_init(void){
- _vbus.voltage_avg = 0;
- _vbus.avg_count = 5;
- HAL_ADC1_ChanConfig(VBUS_SENSOR_ADC_CHANNEL);
- vbus_sample_voltage();
- }
- void vbus_sample_voltage(void){
- u32 vadc = 0;
- u32 max = 0, min = 0xFFFFFFF;
- for (int i = 0; i < _vbus.avg_count; i++) {
- u32 one = HAL_ADC1_ReadValue(VBUS_SENSOR_ADC_CHANNEL);
- vadc += one;
- if (min > one) {
- min = one;
- }
- if (max < one) {
- max = one;
- }
- }
- vadc -= (max + min);
- vadc = vadc / (_vbus.avg_count - 2);
- _vbus.voltage_avg = ((float)vadc)/(65536.0f) * ADC_REFERENCE_VOLTAGE / VBUS_PARTITIONING_FACTOR;
- }
- float vbus_get_voltage(void){
- return _vbus.voltage_avg;
- }
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