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Add a soft reset in setup() for bmp280 (#4329)

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fixes https://github.com/esphome/issues/issues/3383
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melyux 2023-01-25 15:11:10 -08:00 committed by GitHub
parent ded86493c2
commit e778a445d9
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 26 additions and 0 deletions
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26
esphome/components/bmp280/bmp280.cpp
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@ -1,4 +1,5 @@
#include "bmp280.h"
#include "esphome/core/hal.h"
#include "esphome/core/log.h"
namespace esphome {
@ -11,8 +12,11 @@ static const uint8_t BMP280_REGISTER_CONTROL = 0xF4;
static const uint8_t BMP280_REGISTER_CONFIG = 0xF5;
static const uint8_t BMP280_REGISTER_PRESSUREDATA = 0xF7;
static const uint8_t BMP280_REGISTER_TEMPDATA = 0xFA;
static const uint8_t BMP280_REGISTER_RESET = 0xE0;
static const uint8_t BMP280_MODE_FORCED = 0b01;
static const uint8_t BMP280_SOFT_RESET = 0xB6;
static const uint8_t BMP280_STATUS_IM_UPDATE = 0b01;
inline uint16_t combine_bytes(uint8_t msb, uint8_t lsb) { return ((msb & 0xFF) << 8) | (lsb & 0xFF); }
@ -66,6 +70,28 @@ void BMP280Component::setup() {
return;
}
// Send a soft reset.
if (!this->write_byte(BMP280_REGISTER_RESET, BMP280_SOFT_RESET)) {
this->mark_failed();
return;
}
// Wait until the NVM data has finished loading.
uint8_t status;
uint8_t retry = 5;
do {
delay(2);
if (!this->read_byte(BMP280_REGISTER_STATUS, &status)) {
ESP_LOGW(TAG, "Error reading status register.");
this->mark_failed();
return;
}
} while ((status & BMP280_STATUS_IM_UPDATE) && (--retry));
if (status & BMP280_STATUS_IM_UPDATE) {
ESP_LOGW(TAG, "Timeout loading NVM.");
this->mark_failed();
return;
}
// Read calibration
this->calibration_.t1 = this->read_u16_le_(0x88);
this->calibration_.t2 = this->read_s16_le_(0x8A);