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ESP-Miner/main/TPS546.c
Georges 10c331a400
Supra 402 (#221) 
* port TCH Supra 402 branch

* refactor TMP1075 (unused?) driver using i2c_master module

* pulled in @Bitmaker-hub stratum_task.c DNS changes from PR #185

* removing serial debug

---------

Co-authored-by: Skot <skot@bitnet.cx>
2024-06-14 16:09:08 -04:00

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#include "driver/i2c.h"
#include "esp_log.h"
#include <stdio.h>
#include <stdint.h>
#include <math.h>
#include <string.h>
#include "pmbus_commands.h"
#include "TPS546.h"
#define I2C_MASTER_NUM 0 /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
#define WRITE_BIT I2C_MASTER_WRITE
#define READ_BIT I2C_MASTER_READ
#define ACK_CHECK true
#define NO_ACK_CHECK false
#define ACK_VALUE 0x0
#define NACK_VALUE 0x1
#define MAX_BLOCK_LEN 32
#define SMBUS_DEFAULT_TIMEOUT (1000 / portTICK_PERIOD_MS)
static const char *TAG = "TPS546.c";
static uint8_t DEVICE_ID1[] = {0x54, 0x49, 0x54, 0x6B, 0x24, 0x41};
static uint8_t DEVICE_ID2[] = {0x54, 0x49, 0x54, 0x6D, 0x24, 0x41};
static uint8_t MFR_ID[] = {'B', 'A', 'X'};
static uint8_t MFR_MODEL[] = {'H', 'E', 'X'};
static uint8_t MFR_REVISION[] = {0x00, 0x00, 0x01};
static uint8_t COMPENSATION_CONFIG[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
/**
* @brief SMBus read byte
*/
static esp_err_t smb_read_byte(uint8_t command, uint8_t *data)
{
esp_err_t err = ESP_FAIL;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, TPS546_I2CADDR << 1 | WRITE_BIT, ACK_CHECK);
i2c_master_write_byte(cmd, command, ACK_CHECK);
i2c_master_start(cmd);
i2c_master_write_byte(cmd, TPS546_I2CADDR << 1 | READ_BIT, ACK_CHECK);
i2c_master_read_byte(cmd, data, NACK_VALUE);
i2c_master_stop(cmd);
i2c_set_timeout(I2C_MASTER_NUM, 20);
ESP_ERROR_CHECK(i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, SMBUS_DEFAULT_TIMEOUT));
i2c_cmd_link_delete(cmd);
// return get an actual error status
return err;
}
/**
* @brief SMBus write byte
*/
static esp_err_t smb_write_byte(uint8_t command, uint8_t data)
{
esp_err_t err = ESP_FAIL;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, TPS546_I2CADDR << 1 | WRITE_BIT, ACK_CHECK);
i2c_master_write_byte(cmd, command, ACK_CHECK);
i2c_master_write_byte(cmd, data, ACK_CHECK);
i2c_master_stop(cmd);
ESP_ERROR_CHECK(i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, SMBUS_DEFAULT_TIMEOUT));
i2c_cmd_link_delete(cmd);
// TODO return an actual error status
return err;
}
/**
* @brief SMBus read word
*/
static esp_err_t smb_read_word(uint8_t command, uint16_t *result)
{
uint8_t data[2];
esp_err_t err = ESP_FAIL;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, TPS546_I2CADDR << 1 | WRITE_BIT, ACK_CHECK);
i2c_master_write_byte(cmd, command, ACK_CHECK);
i2c_master_start(cmd);
i2c_master_write_byte(cmd, TPS546_I2CADDR << 1 | READ_BIT, ACK_CHECK);
i2c_master_read(cmd, &data[0], 1, ACK_VALUE);
i2c_master_read_byte(cmd, &data[1], NACK_VALUE);
i2c_master_stop(cmd);
i2c_set_timeout(I2C_MASTER_NUM, 20);
ESP_ERROR_CHECK(i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, SMBUS_DEFAULT_TIMEOUT));
i2c_cmd_link_delete(cmd);
*result = (data[1] << 8) + data[0];
// TODO return an actual error status
return err;
}
/**
* @brief SMBus write word
*/
static esp_err_t smb_write_word(uint8_t command, uint16_t data)
{
esp_err_t err = ESP_FAIL;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, TPS546_I2CADDR << 1 | WRITE_BIT, ACK_CHECK);
i2c_master_write_byte(cmd, command, ACK_CHECK);
i2c_master_write_byte(cmd, (uint8_t)(data & 0x00FF), ACK_CHECK);
i2c_master_write_byte(cmd, (uint8_t)((data & 0xFF00) >> 8), NACK_VALUE);
i2c_master_stop(cmd);
ESP_ERROR_CHECK(i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, SMBUS_DEFAULT_TIMEOUT));
i2c_cmd_link_delete(cmd);
// TODO return an actual error status
return err;
}
/**
* @brief SMBus read block
*/
static esp_err_t smb_read_block(uint8_t command, uint8_t *data, uint8_t len)
{
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, TPS546_I2CADDR << 1 | WRITE_BIT, ACK_CHECK);
i2c_master_write_byte(cmd, command, ACK_CHECK);
i2c_master_start(cmd);
i2c_master_write_byte(cmd, TPS546_I2CADDR << 1 | READ_BIT, ACK_CHECK);
uint8_t slave_len = 0;
i2c_master_read_byte(cmd, &slave_len, ACK_VALUE);
ESP_ERROR_CHECK(i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, SMBUS_DEFAULT_TIMEOUT));
i2c_cmd_link_delete(cmd);
cmd = i2c_cmd_link_create();
for (size_t i = 0; i < slave_len - 1; ++i)
{
i2c_master_read_byte(cmd, &data[i], ACK_VALUE);
}
i2c_master_read_byte(cmd, &data[slave_len - 1], NACK_VALUE);
i2c_master_stop(cmd);
ESP_ERROR_CHECK(i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, SMBUS_DEFAULT_TIMEOUT));
i2c_cmd_link_delete(cmd);
// TODO return an actual error status
return 0;
}
/**
* @brief SMBus write block
*/
static esp_err_t smb_write_block(uint8_t command, uint8_t *data, uint8_t len)
{
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, TPS546_I2CADDR << 1 | WRITE_BIT, ACK_CHECK);
i2c_master_write_byte(cmd, command, ACK_CHECK);
i2c_master_write_byte(cmd, len, ACK_CHECK);
for (size_t i = 0; i < len; ++i)
{
i2c_master_write_byte(cmd, data[i], ACK_CHECK);
}
i2c_master_stop(cmd);
i2c_set_timeout(I2C_MASTER_NUM, 20);
ESP_ERROR_CHECK(i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, SMBUS_DEFAULT_TIMEOUT));
i2c_cmd_link_delete(cmd);
// TODO return an actual error status
return 0;
}
/**
* @brief Convert an SLINEAR11 value into an int
*/
static int slinear11_2_int(uint16_t value)
{
int exponent, mantissa;
float result;
// First 5 bits is exponent in twos-complement
// check the first bit of the exponent to see if its negative
if (value & 0x8000) {
// exponent is negative
exponent = -1 * (((~value >> 11) & 0x001F) + 1);
} else {
exponent = (value >> 11);
}
// last 11 bits is the mantissa in twos-complement
// check the first bit of the mantissa to see if its negative
if (value & 0x400) {
// mantissa is negative
mantissa = -1 * ((~value & 0x03FF) + 1);
} else {
mantissa = (value & 0x03FF);
}
// calculate result (mantissa * 2^exponent)
result = mantissa * powf(2.0, exponent);
return (int)result;
}
/**
* @brief Convert an SLINEAR11 value into an int
*/
static float slinear11_2_float(uint16_t value)
{
int exponent, mantissa;
float result;
// First 5 bits is exponent in twos-complement
// check the first bit of the exponent to see if its negative
if (value & 0x8000) {
// exponent is negative
exponent = -1 * (((~value >> 11) & 0x001F) + 1);
} else {
exponent = (value >> 11);
}
// last 11 bits is the mantissa in twos-complement
// check the first bit of the mantissa to see if its negative
if (value & 0x400) {
// mantissa is negative
mantissa = -1 * ((~value & 0x03FF) + 1);
} else {
mantissa = (value & 0x03FF);
}
// calculate result (mantissa * 2^exponent)
result = mantissa * powf(2.0, exponent);
return result;
}
/**
* @brief Convert an int value into an SLINEAR11
*/
static uint16_t int_2_slinear11(int value)
{
int mantissa;
int exponent = 0;
uint16_t result = 0;
int i;
// First see if the exponent is positive or negative
if (value >= 0) {
// exponent is positive
for (i=0; i<=15; i++) {
mantissa = value / powf(2.0, i);
if (mantissa < 1024) {
exponent = i;
break;
}
}
if (i == 16) {
ESP_LOGI(TAG, "Could not find a solution");
return 0;
}
} else {
// value is negative
ESP_LOGI(TAG, "No negative numbers at this time");
return 0;
}
result = ((exponent << 11) & 0xF800) + mantissa;
return result;
}
/**
* @brief Convert a float value into an SLINEAR11
*/
static uint16_t float_2_slinear11(float value)
{
int mantissa;
int exponent = 0;
uint16_t result = 0;
int i;
// First see if the exponent is positive or negative
if (value > 0) {
// exponent is negative
for (i=0; i<=15; i++) {
mantissa = value * powf(2.0, i);
if (mantissa >= 1024) {
exponent = i-1;
mantissa = value * powf(2.0, exponent);
break;
}
}
if (i == 16) {
ESP_LOGI(TAG, "Could not find a solution");
return 0;
}
} else {
// value is negative
ESP_LOGI(TAG, "No negative numbers at this time");
return 0;
}
result = (( (~exponent + 1) << 11) & 0xF800) + mantissa;
return result;
}
/**
* @brief Convert a ULINEAR16 value into a float
* the exponent comes from the VOUT_MODE bits[4..0]
* stored in twos-complement
* The mantissa occupies the full 16-bits of the value
*/
static float ulinear16_2_float(uint16_t value)
{
uint8_t voutmode;
int exponent;
float result;
smb_read_byte(PMBUS_VOUT_MODE, &voutmode);
if (voutmode & 0x10) {
// exponent is negative
exponent = -1 * ((~voutmode & 0x1F) + 1);
} else {
exponent = (voutmode & 0x1F);
}
result = (value * powf(2.0, exponent));
return result;
}
/**
* @brief Convert a float value into a ULINEAR16
* the exponent comes from the VOUT_MODE bits[4..0]
* stored in twos-complement
* The mantissa occupies the full 16-bits of the result
**/
static uint16_t float_2_ulinear16(float value)
{
uint8_t voutmode;
float exponent;
uint16_t result;
smb_read_byte(PMBUS_VOUT_MODE, &voutmode);
if (voutmode & 0x10) {
// exponent is negative
exponent = -1 * ((~voutmode & 0x1F) + 1);
} else {
exponent = (voutmode & 0x1F);
}
result = (value / powf(2.0, exponent));
return result;
}
/*--- Public TPS546 functions ---*/
// Set up the TPS546 regulator and turn it on
int TPS546_init(void)
{
uint8_t data[6];
uint8_t u8_value;
uint16_t u16_value;
float vin;
float iout;
float vout;
uint8_t read_mfr_revision[4];
int temp;
uint8_t comp_config[5];
ESP_LOGI(TAG, "Initializing the core voltage regulator");
/* Establish communication with regulator */
smb_read_block(PMBUS_IC_DEVICE_ID, data, 6);
ESP_LOGI(TAG, "Device ID: %02x %02x %02x %02x %02x %02x", data[0], data[1],
data[2], data[3], data[4], data[5]);
/* There's two different known device IDs observed so far */
if ( (memcmp(data, DEVICE_ID1, 6) != 0) && (memcmp(data, DEVICE_ID2, 6) != 0) )
{
ESP_LOGI(TAG, "ERROR- cannot find TPS546 regulator");
return -1;
}
/* Make sure power is turned off until commanded */
u8_value = ON_OFF_CONFIG_CMD | ON_OFF_CONFIG_PU | ON_OFF_CONFIG_CP |
ON_OFF_CONFIG_POLARITY | ON_OFF_CONFIG_DELAY;
ESP_LOGI(TAG, "Power config-ON_OFF_CONFIG: %02x", u8_value);
smb_write_byte(PMBUS_ON_OFF_CONFIG, u8_value);
/* Read version number and see if it matches */
TPS546_read_mfr_info(read_mfr_revision);
if (memcmp(read_mfr_revision, MFR_REVISION, 3) != 0) {
uint8_t voutmode;
// If it doesn't match, then write all the registers and set new version number
ESP_LOGI(TAG, "--------------------------------");
ESP_LOGI(TAG, "Config version mismatch, writing new config values");
smb_read_byte(PMBUS_VOUT_MODE, &voutmode);
ESP_LOGI(TAG, "VOUT_MODE: %02x", voutmode);
TPS546_write_entire_config();
}
/* Show temperature */
ESP_LOGI(TAG, "--------------------------------");
ESP_LOGI(TAG, "Temp: %d", TPS546_get_temperature());
/* Show switching frequency */
TPS546_get_frequency();
TPS546_set_frequency(650);
/* Show voltage settings */
TPS546_show_voltage_settings();
ESP_LOGI(TAG, "-----------VOLTAGE/CURRENT---------------------");
/* Get voltage input (SLINEAR11) */
TPS546_get_vin();
/* Get output current (SLINEAR11) */
TPS546_get_iout();
/* Get voltage output (ULINEAR16) */
TPS546_get_vout();
ESP_LOGI(TAG, "-----------TIMING---------------------");
smb_read_word(PMBUS_TON_DELAY, &u16_value);
temp = slinear11_2_int(u16_value);
ESP_LOGI(TAG, "TON_DELAY: %d", temp);
smb_read_word(PMBUS_TON_RISE, &u16_value);
temp = slinear11_2_int(u16_value);
ESP_LOGI(TAG, "TON_RISE: %d", temp);
smb_read_word(PMBUS_TON_MAX_FAULT_LIMIT, &u16_value);
temp = slinear11_2_int(u16_value);
ESP_LOGI(TAG, "TON_MAX_FAULT_LIMIT: %d", temp);
smb_read_byte(PMBUS_TON_MAX_FAULT_RESPONSE, &u8_value);
ESP_LOGI(TAG, "TON_MAX_FAULT_RESPONSE: %02x", u8_value);
smb_read_word(PMBUS_TOFF_DELAY, &u16_value);
temp = slinear11_2_int(u16_value);
ESP_LOGI(TAG, "TOFF_DELAY: %d", temp);
smb_read_word(PMBUS_TOFF_FALL, &u16_value);
temp = slinear11_2_int(u16_value);
ESP_LOGI(TAG, "TOFF_FALL: %d", temp);
ESP_LOGI(TAG, "--------------------------------------");
// Read the compensation config registers
smb_read_block(PMBUS_COMPENSATION_CONFIG, comp_config, 5);
ESP_LOGI(TAG, "COMPENSATION CONFIG");
ESP_LOGI(TAG, "%02x %02x %02x %02x %02x", comp_config[0], comp_config[1],
comp_config[2], comp_config[3], comp_config[4]);
return 0;
}
/* Read the manufacturer model and revision */
void TPS546_read_mfr_info(uint8_t *read_mfr_revision)
{
uint8_t read_mfr_id[4];
uint8_t read_mfr_model[4];
ESP_LOGI(TAG, "Reading MFR info");
smb_read_block(PMBUS_MFR_ID, read_mfr_id, 3);
read_mfr_id[3] = 0x00;
smb_read_block(PMBUS_MFR_MODEL, read_mfr_model, 3);
read_mfr_model[3] = 0x00;
smb_read_block(PMBUS_MFR_REVISION, read_mfr_revision, 3);
ESP_LOGI(TAG, "MFR_ID: %s", read_mfr_id);
ESP_LOGI(TAG, "MFR_MODEL: %s", read_mfr_model);
ESP_LOGI(TAG, "MFR_REVISION: %d%d%d ", read_mfr_revision[0],
read_mfr_revision[1], read_mfr_revision[2]);
}
/* Write the manufacturer ID and revision to NVM */
void TPS546_set_mfr_info(void)
{
ESP_LOGI(TAG, "Setting MFR info");
smb_write_block(PMBUS_MFR_ID, MFR_ID, 3);
smb_write_block(PMBUS_MFR_MODEL, MFR_MODEL, 3);
smb_write_block(PMBUS_MFR_REVISION, MFR_REVISION, 3);
}
/* Set all the relevant config registers for normal operation */
void TPS546_write_entire_config(void)
{
ESP_LOGI(TAG, "---Writing new config values to TPS546---");
/* set up the ON_OFF_CONFIG */
ESP_LOGI(TAG, "Setting ON_OFF_CONFIG");
smb_write_byte(PMBUS_ON_OFF_CONFIG, TPS546_INIT_ON_OFF_CONFIG);
/* Switch frequency */
ESP_LOGI(TAG, "Setting FREQUENCY");
smb_write_word(PMBUS_FREQUENCY_SWITCH, int_2_slinear11(TPS546_INIT_FREQUENCY));
/* vin voltage */
ESP_LOGI(TAG, "Setting VIN");
smb_write_word(PMBUS_VIN_ON, float_2_slinear11(TPS546_INIT_VIN_ON));
smb_write_word(PMBUS_VIN_OFF, float_2_slinear11(TPS546_INIT_VIN_OFF));
smb_write_word(PMBUS_VIN_UV_WARN_LIMIT, float_2_slinear11(TPS546_INIT_VIN_UV_WARN_LIMIT));
smb_write_word(PMBUS_VIN_OV_FAULT_LIMIT, float_2_slinear11(TPS546_INIT_VIN_OV_FAULT_LIMIT));
smb_write_byte(PMBUS_VIN_OV_FAULT_RESPONSE, TPS546_INIT_VIN_OV_FAULT_RESPONSE);
/* vout voltage */
ESP_LOGI(TAG, "Setting VOUT SCALE");
smb_write_word(PMBUS_VOUT_SCALE_LOOP, float_2_slinear11(TPS546_INIT_SCALE_LOOP));
ESP_LOGI(TAG, "VOUT_COMMAND");
smb_write_word(PMBUS_VOUT_COMMAND, float_2_ulinear16(TPS546_INIT_VOUT_COMMAND));
ESP_LOGI(TAG, "VOUT_MAX");
smb_write_word(PMBUS_VOUT_MAX, float_2_ulinear16(TPS546_INIT_VOUT_MAX));
ESP_LOGI(TAG, "VOUT_OV_FAULT_LIMIT");
smb_write_word(PMBUS_VOUT_OV_FAULT_LIMIT, float_2_ulinear16(TPS546_INIT_VOUT_OV_FAULT_LIMIT));
ESP_LOGI(TAG, "VOUT_OV_WARN_LIMIT");
smb_write_word(PMBUS_VOUT_OV_WARN_LIMIT, float_2_ulinear16(TPS546_INIT_VOUT_OV_WARN_LIMIT));
ESP_LOGI(TAG, "VOUT_MARGIN_HIGH");
smb_write_word(PMBUS_VOUT_MARGIN_HIGH, float_2_ulinear16(TPS546_INIT_VOUT_MARGIN_HIGH));
ESP_LOGI(TAG, "VOUT_MARGIN_LOW");
smb_write_word(PMBUS_VOUT_MARGIN_LOW, float_2_ulinear16(TPS546_INIT_VOUT_MARGIN_LOW));
ESP_LOGI(TAG, "VOUT_UV_WARN_LIMIT");
smb_write_word(PMBUS_VOUT_UV_WARN_LIMIT, float_2_ulinear16(TPS546_INIT_VOUT_UV_WARN_LIMIT));
ESP_LOGI(TAG, "VOUT_UV_FAULT_LIMIT");
smb_write_word(PMBUS_VOUT_UV_FAULT_LIMIT, float_2_ulinear16(TPS546_INIT_VOUT_UV_FAULT_LIMIT));
ESP_LOGI(TAG, "VOUT_MIN");
smb_write_word(PMBUS_VOUT_MIN, float_2_ulinear16(TPS546_INIT_VOUT_MIN));
/* iout current */
ESP_LOGI(TAG, "Setting IOUT");
smb_write_word(PMBUS_IOUT_OC_WARN_LIMIT, float_2_slinear11(TPS546_INIT_IOUT_OC_WARN_LIMIT));
smb_write_word(PMBUS_IOUT_OC_FAULT_LIMIT, float_2_slinear11(TPS546_INIT_IOUT_OC_FAULT_LIMIT));
smb_write_byte(PMBUS_IOUT_OC_FAULT_RESPONSE, TPS546_INIT_IOUT_OC_FAULT_RESPONSE);
/* temperature */
ESP_LOGI(TAG, "Setting TEMPERATURE");
ESP_LOGI(TAG, "OT_WARN_LIMIT");
smb_write_word(PMBUS_OT_WARN_LIMIT, int_2_slinear11(TPS546_INIT_OT_WARN_LIMIT));
ESP_LOGI(TAG, "OT_FAULT_LIMIT");
smb_write_word(PMBUS_OT_FAULT_LIMIT, int_2_slinear11(TPS546_INIT_OT_FAULT_LIMIT));
ESP_LOGI(TAG, "OT_FAULT_RESPONSE");
smb_write_byte(PMBUS_OT_FAULT_RESPONSE, TPS546_INIT_OT_FAULT_RESPONSE);
/* timing */
ESP_LOGI(TAG, "Setting TIMING");
ESP_LOGI(TAG, "TON_DELAY");
smb_write_word(PMBUS_TON_DELAY, int_2_slinear11(TPS546_INIT_TON_DELAY));
ESP_LOGI(TAG, "TON_RISE");
smb_write_word(PMBUS_TON_RISE, int_2_slinear11(TPS546_INIT_TON_RISE));
ESP_LOGI(TAG, "TON_MAX_FAULT_LIMIT");
smb_write_word(PMBUS_TON_MAX_FAULT_LIMIT, int_2_slinear11(TPS546_INIT_TON_MAX_FAULT_LIMIT));
smb_write_byte(PMBUS_TON_MAX_FAULT_RESPONSE, TPS546_INIT_TON_MAX_FAULT_RESPONSE);
smb_write_word(PMBUS_TOFF_DELAY, int_2_slinear11(TPS546_INIT_TOFF_DELAY));
smb_write_word(PMBUS_TOFF_FALL, int_2_slinear11(TPS546_INIT_TOFF_FALL));
/* Compensation config */
//ESP_LOGI(TAG, "COMPENSATION");
//smb_write_block(PMBUS_COMPENSATION_CONFIG, COMPENSATION_CONFIG, 5);
/* configure the bootup behavior regarding pin detect values vs NVM values */
ESP_LOGI(TAG, "Setting PIN_DETECT_OVERRIDE");
smb_write_word(PMBUS_PIN_DETECT_OVERRIDE, INIT_PIN_DETECT_OVERRIDE);
/* TODO write new MFR_REVISION number to reflect these parameters */
ESP_LOGI(TAG, "Writing MFR ID");
smb_write_block(PMBUS_MFR_ID, MFR_ID, 3);
ESP_LOGI(TAG, "Writing MFR MODEL");
smb_write_block(PMBUS_MFR_ID, MFR_MODEL, 3);
ESP_LOGI(TAG, "Writing MFR REVISION");
smb_write_block(PMBUS_MFR_ID, MFR_REVISION, 3);
/* store configuration in NVM */
ESP_LOGI(TAG, "---Saving new config---");
smb_write_byte(PMBUS_STORE_USER_ALL, 0x98);
}
int TPS546_get_frequency(void)
{
uint16_t value;
int freq;
smb_read_word(PMBUS_FREQUENCY_SWITCH, &value);
freq = slinear11_2_int(value);
return (int)freq;
}
void TPS546_set_frequency(int newfreq)
{
uint16_t value;
int freq;
ESP_LOGI(TAG, "Writing new frequency: %d", newfreq);
value = int_2_slinear11(newfreq);
//ESP_LOGI(TAG, "New value: 0x%04x", value);
smb_write_word(PMBUS_FREQUENCY_SWITCH, value);
//ESP_LOGI(TAG, "Checking conversion...");
//freq = slinear11_2_int(value);
//ESP_LOGI(TAG, "Converted value: %d", freq);
}
int TPS546_get_temperature(void)
{
uint16_t value;
int temp;
smb_read_word(PMBUS_READ_TEMPERATURE_1, &value);
temp = slinear11_2_int(value);
return temp;
}
float TPS546_get_vin(void)
{
uint16_t u16_value;
float vin;
/* Get voltage input (ULINEAR16) */
smb_read_word(PMBUS_READ_VIN, &u16_value);
vin = slinear11_2_float(u16_value);
#ifdef _DEBUG_LOG_
ESP_LOGI(TAG, "Got Vin: %2.3f V", vin);
#endif
return vin;
}
float TPS546_get_iout(void)
{
uint16_t u16_value;
float iout;
/* Get current output (SLINEAR11) */
smb_read_word(PMBUS_READ_IOUT, &u16_value);
iout = slinear11_2_float(u16_value);
#ifdef _DEBUG_LOG_
ESP_LOGI(TAG, "Got Iout: %2.3f A", iout);
#endif
return iout;
}
float TPS546_get_vout(void)
{
uint16_t u16_value;
float vout;
/* Get voltage output (ULINEAR16) */
smb_read_word(PMBUS_READ_VOUT, &u16_value);
vout = ulinear16_2_float(u16_value);
#ifdef _DEBUG_LOG_
ESP_LOGI(TAG, "Got Vout: %2.3f V", vout);
#endif
return vout;
}
/**
* @brief Sets the core voltage
* this function controls the regulator ontput state
* send it the desired output in millivolts
* A value between TPS546_INIT_VOUT_MIN and TPS546_INIT_VOUT_MAX
* send a 0 to turn off the output
**/
void TPS546_set_vout(float volts)
{
uint16_t value;
if (volts == 0) {
/* turn off output */
smb_write_byte(PMBUS_OPERATION, OPERATION_OFF);
} else {
/* make sure we're in range */
if ((volts < TPS546_INIT_VOUT_MIN) || (volts > TPS546_INIT_VOUT_MAX)) {
ESP_LOGI(TAG, "ERR- Voltage requested (%f V) is out of range", volts);
} else {
/* set the output voltage */
value = float_2_ulinear16(volts);
smb_write_word(PMBUS_VOUT_COMMAND, value);
ESP_LOGI(TAG, "Vout changed to %1.2f V", volts);
/* turn on output */
smb_write_byte(PMBUS_OPERATION, OPERATION_ON);
}
}
}
void TPS546_show_voltage_settings(void)
{
uint16_t u16_value;
float f_value;
ESP_LOGI(TAG, "-----------VOLTAGE---------------------");
/* VIN_ON SLINEAR11 */
smb_read_word(PMBUS_VIN_ON, &u16_value);
f_value = slinear11_2_float(u16_value);
ESP_LOGI(TAG, "VIN ON set to: %f", f_value);
/* VIN_OFF SLINEAR11 */
smb_read_word(PMBUS_VIN_OFF, &u16_value);
f_value = slinear11_2_float(u16_value);
ESP_LOGI(TAG, "VIN OFF set to: %f", f_value);
/* VOUT_MAX */
smb_read_word(PMBUS_VOUT_MAX, &u16_value);
f_value = ulinear16_2_float(u16_value);
ESP_LOGI(TAG, "Vout Max set to: %f V", f_value);
/* VOUT_OV_FAULT_LIMIT */
smb_read_word(PMBUS_VOUT_OV_FAULT_LIMIT, &u16_value);
f_value = ulinear16_2_float(u16_value);
ESP_LOGI(TAG, "Vout OV Fault Limit: %f V", f_value);
/* VOUT_OV_WARN_LIMIT */
smb_read_word(PMBUS_VOUT_OV_WARN_LIMIT, &u16_value);
f_value = ulinear16_2_float(u16_value);
ESP_LOGI(TAG, "Vout OV Warn Limit: %f V", f_value);
/* VOUT_MARGIN_HIGH */
smb_read_word(PMBUS_VOUT_MARGIN_HIGH, &u16_value);
f_value = ulinear16_2_float(u16_value);
ESP_LOGI(TAG, "Vout Margin HIGH: %f V", f_value);
/* --- VOUT_COMMAND --- */
smb_read_word(PMBUS_VOUT_COMMAND, &u16_value);
f_value = ulinear16_2_float(u16_value);
ESP_LOGI(TAG, "Vout set to: %f V", f_value);
/* VOUT_MARGIN_LOW */
smb_read_word(PMBUS_VOUT_MARGIN_LOW, &u16_value);
f_value = ulinear16_2_float(u16_value);
ESP_LOGI(TAG, "Vout Margin LOW: %f V", f_value);
/* VOUT_UV_WARN_LIMIT */
smb_read_word(PMBUS_VOUT_UV_WARN_LIMIT, &u16_value);
f_value = ulinear16_2_float(u16_value);
ESP_LOGI(TAG, "Vout UV Warn Limit: %f V", f_value);
/* VOUT_UV_FAULT_LIMIT */
smb_read_word(PMBUS_VOUT_UV_FAULT_LIMIT, &u16_value);
f_value = ulinear16_2_float(u16_value);
ESP_LOGI(TAG, "Vout UV Fault Limit: %f V", f_value);
/* VOUT_MIN */
smb_read_word(PMBUS_VOUT_MIN, &u16_value);
f_value = ulinear16_2_float(u16_value);
ESP_LOGI(TAG, "Vout Min set to: %f V", f_value);
}
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