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Remove problematic calloc

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This commit is contained in:
Lucian Copeland 2020-12-08 17:30:32 -05:00
parent 93fade24ef
commit 9a5006e241
1 changed files with 8 additions and 3 deletions
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11
ports/esp32s2/common-hal/analogio/AnalogIn.c
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@ -34,6 +34,8 @@
#include "shared-bindings/microcontroller/Pin.h"
#include <string.h>
#define DEFAULT_VREF 1100
#define NO_OF_SAMPLES 64
#define ATTENUATION ADC_ATTEN_DB_11
@ -66,11 +68,14 @@ uint16_t common_hal_analogio_analogin_get_value(analogio_analogin_obj_t *self) {
adc1_config_channel_atten((adc1_channel_t)self->pin->adc_channel, ATTENUATION);
} else if (self->pin->adc_index == ADC_UNIT_2) {
adc2_config_channel_atten((adc2_channel_t)self->pin->adc_channel, ATTENUATION);
} else {
mp_raise_ValueError(translate("Invalid Pin"));
}
// Automatically select calibration process depending on status of efuse
esp_adc_cal_characteristics_t *adc_chars = calloc(1, sizeof(esp_adc_cal_characteristics_t));
esp_adc_cal_characterize(self->pin->adc_index, ATTENUATION, DATA_WIDTH, DEFAULT_VREF, adc_chars);
esp_adc_cal_characteristics_t adc_chars;
memset(&adc_chars, 0, sizeof(adc_chars));
esp_adc_cal_characterize(self->pin->adc_index, ATTENUATION, DATA_WIDTH, DEFAULT_VREF, &adc_chars);
uint32_t adc_reading = 0;
//Multisampling
@ -89,7 +94,7 @@ uint16_t common_hal_analogio_analogin_get_value(analogio_analogin_obj_t *self) {
adc_reading /= NO_OF_SAMPLES;
// This corrects non-linear regions of the ADC range with a LUT, so it's a better reading than raw
uint32_t voltage = esp_adc_cal_raw_to_voltage(adc_reading, adc_chars);
uint32_t voltage = esp_adc_cal_raw_to_voltage(adc_reading, &adc_chars);
return voltage * ((1 << 16) - 1)/3300;
}