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https://github.com/skot/ESP-Miner.git
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e1bf30b26e
Fix all compiler warnings and migrate off depreciated ADC and I2C libraries. --------- Co-authored-by: Erik Olof Gunnar Andersson <eandersson@users.noreply.github.com>
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
#include <stdio.h>
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#include "esp_log.h"
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#include "i2c_bitaxe.h"
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#include "EMC2101.h"
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static const char * TAG = "EMC2101";
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// static const char *TAG = "EMC2101.c";
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static i2c_master_dev_handle_t emc2101_dev_handle;
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/**
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* @brief Initialize the EMC2101 sensor.
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*
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* @return esp_err_t ESP_OK on success, or an error code on failure.
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*/
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esp_err_t EMC2101_init(bool invertPolarity) {
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if (i2c_bitaxe_add_device(EMC2101_I2CADDR_DEFAULT, &emc2101_dev_handle) != ESP_OK) {
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ESP_LOGE(TAG, "Failed to add device");
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return ESP_FAIL;
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}
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// set the TACH input
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ESP_ERROR_CHECK(i2c_bitaxe_register_write_byte(emc2101_dev_handle, EMC2101_REG_CONFIG, 0x04));
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if (invertPolarity) {
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ESP_ERROR_CHECK(i2c_bitaxe_register_write_byte(emc2101_dev_handle, EMC2101_FAN_CONFIG, 0b00100011));
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}
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return ESP_OK;
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}
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// takes a fan speed percent
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void EMC2101_set_fan_speed(float percent)
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{
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uint8_t speed;
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speed = (uint8_t) (63.0 * percent);
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ESP_ERROR_CHECK(i2c_bitaxe_register_write_byte(emc2101_dev_handle, EMC2101_REG_FAN_SETTING, speed));
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}
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// RPM = 5400000/reading
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uint16_t EMC2101_get_fan_speed(void)
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{
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uint8_t tach_lsb, tach_msb;
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uint16_t reading;
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uint16_t RPM;
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ESP_ERROR_CHECK(i2c_bitaxe_register_read(emc2101_dev_handle, EMC2101_TACH_LSB, &tach_lsb, 1));
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ESP_ERROR_CHECK(i2c_bitaxe_register_read(emc2101_dev_handle, EMC2101_TACH_MSB, &tach_msb, 1));
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// ESP_LOGI(TAG, "Raw Fan Speed = %02X %02X", tach_msb, tach_lsb);
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reading = tach_lsb | (tach_msb << 8);
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RPM = 5400000 / reading;
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// ESP_LOGI(TAG, "Fan Speed = %d RPM", RPM);
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if (RPM == 82) {
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return 0;
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}
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return RPM;
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}
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float EMC2101_get_external_temp(void)
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{
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uint8_t temp_msb, temp_lsb;
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uint16_t reading;
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ESP_ERROR_CHECK(i2c_bitaxe_register_read(emc2101_dev_handle, EMC2101_EXTERNAL_TEMP_MSB, &temp_msb, 1));
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ESP_ERROR_CHECK(i2c_bitaxe_register_read(emc2101_dev_handle, EMC2101_EXTERNAL_TEMP_LSB, &temp_lsb, 1));
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reading = temp_lsb | (temp_msb << 8);
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reading >>= 5;
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if (reading == EMC2101_TEMP_FAULT_OPEN_CIRCUIT) {
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ESP_LOGE(TAG, "EMC2101 TEMP_FAULT_OPEN_CIRCUIT: %04X", reading);
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}
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if (reading == EMC2101_TEMP_FAULT_SHORT) {
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ESP_LOGE(TAG, "EMC2101 TEMP_FAULT_SHORT: %04X", reading);
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}
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float result = (float) reading / 8.0;
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// Greater than 200C is probably an erroneous reading...
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if (result > 200){
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return EMC2101_get_internal_temp();
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}
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return result;
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}
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uint8_t EMC2101_get_internal_temp(void)
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{
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uint8_t temp;
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ESP_ERROR_CHECK(i2c_bitaxe_register_read(emc2101_dev_handle, EMC2101_INTERNAL_TEMP, &temp, 1));
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return temp;
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}
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