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Convert hall read to use hal/idf #5268

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Merged
merged 3 commits into from
Jun 10, 2021
Merged

Convert hall read to use hal/idf #5268

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3dc3db7
Convert hall read to use hal/idf
lbernstone Jun 9, 2021
88e8f16
docs say to set width first.
lbernstone Jun 9, 2021
064cae1
Urgh. Right function this time
lbernstone Jun 9, 2021
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22 changes: 3 additions & 19 deletions cores/esp32/esp32-hal-adc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -245,28 +245,12 @@ void __analogSetVRefPin(uint8_t pin){
__analogVRefPin = pin;
}

int __hallRead() //hall sensor without LNA
int __hallRead() //hall sensor using idf read
{
int Sens_Vp0;
int Sens_Vn0;
int Sens_Vp1;
int Sens_Vn1;

pinMode(36, ANALOG);
pinMode(39, ANALOG);
SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL1_REG, SENS_XPD_HALL_FORCE_M); // hall sens force enable
SET_PERI_REG_MASK(RTC_IO_HALL_SENS_REG, RTC_IO_XPD_HALL); // xpd hall
SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL1_REG, SENS_HALL_PHASE_FORCE_M); // phase force
CLEAR_PERI_REG_MASK(RTC_IO_HALL_SENS_REG, RTC_IO_HALL_PHASE); // hall phase
Sens_Vp0 = __analogRead(36);
Sens_Vn0 = __analogRead(39);
SET_PERI_REG_MASK(RTC_IO_HALL_SENS_REG, RTC_IO_HALL_PHASE);
Sens_Vp1 = __analogRead(36);
Sens_Vn1 = __analogRead(39);
SET_PERI_REG_BITS(SENS_SAR_MEAS_WAIT2_REG, SENS_FORCE_XPD_SAR, 0, SENS_FORCE_XPD_SAR_S);
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL1_REG, SENS_XPD_HALL_FORCE);
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL1_REG, SENS_HALL_PHASE_FORCE);
return (Sens_Vp1 - Sens_Vp0) - (Sens_Vn1 - Sens_Vn0);
__analogSetWidth(12);
return hall_sensor_read();
}
#endif

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