Seeed_MCP9600/Seeed_MCP9600.cpp

/*
    Seeed_MCP9600.cpp
    Driver for MCP9600

    Copyright (c) 2018 Seeed Technology Co., Ltd.
    Website    : www.seeed.cc
    Author     : downey
    Create Time: May 2018
    Change Log :

    The MIT License (MIT)

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    THE SOFTWARE.
*/

#include "Seeed_MCP9600.h"


MCP9600::MCP9600(u8 IIC_ADDR, u32 IIC_FREQUENCY) {
    set_iic_addr(IIC_ADDR);
    set_iic_frequency(IIC_FREQUENCY);
}


/** @brief set type of thermocouple.read version.
    @param therm_type
    @param frequency
    @return 0 if successed.
 * */
mcp_err_t MCP9600::init(u8 therm_type) {
    mcp_err_t ret = NO_ERROR;
    u16 ver;
    IIC_begin();
    ret = read_version(&ver);
    if (!ret) {
        Serial.print("version =");
        Serial.println(ver, HEX);
    }
    ret = set_therm_type(therm_type);
    return ret;
}



/** @brief read version.
    @param ver.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::read_version(u16* ver) {
    if (IIC_read_16bit(VERSION_ID_REG_ADDR, ver)) {
        return ERROR_COMM;
    }
    return NO_ERROR;
}

/** @brief read hot-junction,the temperature result.
    @param value: result.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::read_hot_junc(float* value) {
    *value = 0;
    s16 read_value = 0;
    if (IIC_read_16bit(HOT_JUNCTION_REG_ADDR, (u16*)&read_value)) {
        return ERROR_COMM;
    }
    *value = (float)read_value / 16.0f;
    return NO_ERROR;
}


/** @brief read junction delta.
    @param value: result.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::read_junc_temp_delta(float* value) {
    *value = 0;
    s16 read_value = 0;
    if (IIC_read_16bit(JUNCTION_TEMP_DELTA_REG_ADDR, (u16*)&read_value)) {
        return ERROR_COMM;
    }
    *value = (float)read_value / 16.0f;
    return NO_ERROR;
}

/** @brief read cold-junction.
    @param value: result.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::read_cold_junc(float* value) {
    *value = 0;
    s16 read_value = 0;
    if (IIC_read_16bit(COLD_JUNCTION_TEMP_REG_ADDR, (u16*)&read_value)) {
        return ERROR_COMM;
    }
    *value = (float)read_value / 16.0f;
    return NO_ERROR;
}

/** @brief read raw ADC value.
    @param data
    @param data_len
    @return 0 if successed.
 * */
mcp_err_t MCP9600::read_ADC_data(u8* data, u32 data_len) {
    if (IIC_read_bytes(RAW_ADC_DATA_REG_ADDR, data, data_len)) {
        return ERROR_COMM;
    }
    return NO_ERROR;
}

/** @brief read sensor status.
    @param byte: result.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::read_status(u8* byte) {
    *byte = 0;
    if (IIC_read_byte(STAT_REG_ADDR, byte)) {
        return ERROR_COMM;
    }
    return NO_ERROR;
}

/** @brief set_therm_cfg
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_therm_cfg(u8 set_byte) {
    if (IIC_write_byte(THERM_SENS_CFG_REG_ADDR, set_byte)) {
        return ERROR_COMM;
    }
    return NO_ERROR;
}


/** @brief read thermocouple status.
    @param byte: result.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::read_therm_cfg(u8* byte) {
    if (IIC_read_byte(THERM_SENS_CFG_REG_ADDR, byte)) {
        return ERROR_COMM;
    }
    return NO_ERROR;
}

/** @brief set_therm_type
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_therm_type(u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(THERM_SENS_CFG_REG_ADDR, &therm_cfg_data)) {
        return ERROR_COMM;
    }

    byte_to_set = (therm_cfg_data & 0x8f) | set_byte;

    return IIC_write_byte(THERM_SENS_CFG_REG_ADDR, byte_to_set);
}

/** @brief set_filt_coefficients
    The  content of filt-coefficients register are:code-junction-resolution/ADC measurement resolution/burst mode temp samples/sensor mode
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_filt_coefficients(u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(THERM_SENS_CFG_REG_ADDR, &therm_cfg_data)) {
        return ERROR_COMM;
    }

    byte_to_set = (therm_cfg_data & 0xf8) | set_byte;

    return IIC_write_byte(THERM_SENS_CFG_REG_ADDR, byte_to_set);
}


/** @brief set_dev_cfg
    The content of device configuration register are:interrupt clear/monitor TH or TC/inerrupt pin rise or FALL/
                                                    Active-high or low/compare mode or int mode /alert enable or not
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_dev_cfg(u8 set_byte) {
    if (IIC_write_byte(DEVICE_CFG_REG_ADDR, set_byte)) {
        return ERROR_COMM;
    }
    return NO_ERROR;
}

/** @brief read_dev_cfg
    @param byte: the byte to be read in.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::read_dev_cfg(u8* byte) {
    if (IIC_read_byte(DEVICE_CFG_REG_ADDR, byte)) {
        return ERROR_COMM;
    }
    return NO_ERROR;
}

/** @brief set_sensor_mode
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_sensor_mode(u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(DEVICE_CFG_REG_ADDR, &therm_cfg_data)) {
        return ERROR_COMM;
    }
    byte_to_set = (therm_cfg_data & 0xfc) | set_byte;
    return IIC_write_byte(DEVICE_CFG_REG_ADDR, byte_to_set);
}

/** @brief set_burst_mode_samp
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_burst_mode_samp(u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(DEVICE_CFG_REG_ADDR, &therm_cfg_data)) {
        return ERROR_COMM;
    }
    byte_to_set = (therm_cfg_data & 0xe3) | set_byte;
    return IIC_write_byte(DEVICE_CFG_REG_ADDR, byte_to_set);
}


/** @brief set_ADC_meas_resolution
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_ADC_meas_resolution(u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(DEVICE_CFG_REG_ADDR, &therm_cfg_data)) {
        return ERROR_COMM;
    }
    byte_to_set = (therm_cfg_data & 0x9f) | set_byte;
    return IIC_write_byte(DEVICE_CFG_REG_ADDR, byte_to_set);
}

/** @brief set_cold_junc_resolution
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_cold_junc_resolution(u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(DEVICE_CFG_REG_ADDR, &therm_cfg_data)) {
        return ERROR_COMM;
    }
    byte_to_set = (therm_cfg_data & 0x7f) | set_byte;
    return IIC_write_byte(DEVICE_CFG_REG_ADDR, byte_to_set);
}

/** @brief set_alert_limitation
    @param alert num the channel of alert
    @param value: the 16bit value to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_alert_limit(u8 alert_num, u16 value) {
    if (IIC_write_16bit(TEMP_ALERT1_LIMIT_REG_ADDR + alert_num, value)) {
        return ERROR_COMM;
    }
    return NO_ERROR;
}

/** @brief set_alert_hysteresis
    @param alert num the channel of alert
    @param set_byte: the byte to be set..
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_alert_hys(u8 alert_num, u16 value) {
    if (IIC_write_byte(ALERT1_HYS_REG_ADDR + alert_num, value)) {
        return ERROR_COMM;
    }
    return NO_ERROR;
}

/** @brief set_alert_cfg
    @param alert num the channel of alert
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_alert_cfg(u8 alert_num, u8 set_byte) {
    return IIC_write_byte(ALERT1_CFG_REG_ADDR + alert_num, set_byte);
}

/** @brief read_alert_cfg
    @param alert num the channel of alert
    @param byte: the byte to be read in.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::read_alert_cfg(u8 alert_num, u8* byte) {
    *byte = 0;
    if (IIC_read_byte(ALERT1_CFG_REG_ADDR + alert_num, byte)) {
        return ERROR_COMM;
    }
    return NO_ERROR;
}

/** @brief clear_int_flag
    @param alert num the channel of alert
    @return 0 if successed.
 * */
mcp_err_t MCP9600::clear_int_flag(u8 alert_num) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(ALERT1_CFG_REG_ADDR + alert_num, &therm_cfg_data)) {
        return ERROR_COMM;
    }
    byte_to_set = (therm_cfg_data | 0x80);
    return IIC_write_byte(ALERT1_CFG_REG_ADDR + alert_num, byte_to_set);
}


/** @brief set_alert_for_TH_or_TC
    @param alert num the channel of alert
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_alert_for_TH_or_TC(u8 alert_num, u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(ALERT1_CFG_REG_ADDR + alert_num, &therm_cfg_data)) {
        return ERROR_COMM;
    }
    byte_to_set = (therm_cfg_data & 0xef) | set_byte;
    return IIC_write_byte(ALERT1_CFG_REG_ADDR + alert_num, byte_to_set);
}

/** @brief set_alert_limit_direction
    @param alert num the channel of alert
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_alert_limit_direction(u8 alert_num, u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(ALERT1_CFG_REG_ADDR + alert_num, &therm_cfg_data)) {
        return ERROR_COMM;
    }
    byte_to_set = (therm_cfg_data & 0xf7) | set_byte;
    return IIC_write_byte(ALERT1_CFG_REG_ADDR + alert_num, byte_to_set);
}

/** @brief set_alert_bit
    @param alert num the channel of alert
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_alert_bit(u8 alert_num, u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(ALERT1_CFG_REG_ADDR + alert_num, &therm_cfg_data)) {
        return ERROR_COMM;
    }

    byte_to_set = (therm_cfg_data & 0xfb) | set_byte;

    return IIC_write_byte(ALERT1_CFG_REG_ADDR + alert_num, byte_to_set);
}

/** @brief set_alert_mode_bit
    set alert mode:comparator mode or INT mode.
    @param alert num the channel of alert
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_alert_mode_bit(u8 alert_num, u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(ALERT1_CFG_REG_ADDR + alert_num, &therm_cfg_data)) {
        return ERROR_COMM;
    }
    byte_to_set = (therm_cfg_data & 0xfd) | set_byte;
    return IIC_write_byte(ALERT1_CFG_REG_ADDR + alert_num, byte_to_set);
}

/** @brief set_alert_enable
    Eable alert pin or not.
    @param alert num the channel of alert
    @param set_byte: the byte to be set.
    @return 0 if successed.
 * */
mcp_err_t MCP9600::set_alert_enable(u8 alert_num, u8 set_byte) {
    u8 therm_cfg_data = 0;
    u8 byte_to_set = 0;
    if (IIC_read_byte(ALERT1_CFG_REG_ADDR + alert_num, &therm_cfg_data)) {
        return ERROR_COMM;
    }
    byte_to_set = (therm_cfg_data & 0xfe) | set_byte;
    return IIC_write_byte(ALERT1_CFG_REG_ADDR + alert_num, byte_to_set);
}


/** @brief check_data_update
    check if data ready.
    @param stat :indicate if data ready
    @return 0 if successed.
 * */
mcp_err_t MCP9600::check_data_update(bool* stat) {
    *stat = 0;
    mcp_err_t ret = NO_ERROR;
    u8 byte = 0;
    CHECK_RESULT(ret, read_status(&byte));
    if (byte & 0x40) {
        *stat = true;
    } else {
        *stat = false;
    }
    return NO_ERROR;
}

/** @brief read_INT_stat
    check if any interruption is generated.
    @param stat :indicate if any interruption is generated
    @return 0 if successed.
 * */
mcp_err_t MCP9600::read_INT_stat(u8* stat) {
    *stat = 0;
    mcp_err_t ret = NO_ERROR;
    u8 byte = 0;
    CHECK_RESULT(ret, read_status(&byte));
    for (int i = 0; i < 4; i++) {
        if (byte & 1 << i) {
            Serial.print("channel ");
            Serial.print(i);
            Serial.println("generate interruption!!!");
        }
    }
    *stat = byte;
    return NO_ERROR;
}




/******************************************************************************************************/
u16 MCP9600::covert_temp_to_reg_form(float temp) {
    u8 negetive = 0;
    if (temp < 0) {
        negetive = 1;
    }
    temp = abs(temp);
    u16 dest_temp = 0;
    u8 temp_H = 0, temp_L = 0;
    u16 interger = (u16)temp;
    float decimal = temp - interger;
    temp_H = interger / 16;
    temp_L |= (interger % 16) << 4;
    temp_L |= (u8)(decimal / 0.25) << 2;
    if (negetive) {
        temp_H |= 0x80;
    }
    dest_temp = (u16)temp_H << 8 | temp_L;
    return dest_temp;
}




/**********************************************************************************************************/
/************************************************IIC PART************************************************/
/**********************************************************************************************************/


/** @brief I2C write byte
    @param reg :Register address of operation object
    @param byte :The byte to be wrote.
    @return result of operation,non-zero if failed.
 * */
mcp_err_t MCP9600_IIC_OPRTS::IIC_write_byte(u8 reg, u8 byte) {
    s32 ret = 0;
    Wire.beginTransmission(_IIC_ADDR);
    Wire.write(reg);
    Wire.write(byte);
    ret = Wire.endTransmission();
    if (!ret) {
        return NO_ERROR;
    } else {
        return ERROR_COMM;
    }
}


/** @brief I2C write 16bit value
    @param reg: Register address of operation object
    @param value: The 16bit value to be wrote .
    @return result of operation,non-zero if failed.
 * */
mcp_err_t MCP9600_IIC_OPRTS::IIC_write_16bit(u8 reg, u16 value) {
    s32 ret = 0;
    Wire.beginTransmission(_IIC_ADDR);
    Wire.write(reg);

    Wire.write((u8)(value >> 8));
    Wire.write((u8)value);
    ret = Wire.endTransmission();
    if (!ret) {
        return NO_ERROR;
    } else {
        return ERROR_COMM;
    }
}



/** @brief I2C read byte
    @param reg: Register address of operation object
    @param byte: The byte to be read in.
    @return result of operation,non-zero if failed.
 * */
mcp_err_t MCP9600_IIC_OPRTS::IIC_read_byte(u8 reg, u8* byte) {
    mcp_err_t ret = NO_ERROR;
    u32 time_out_count = 0;
    Wire.beginTransmission(_IIC_ADDR);
    Wire.write(reg);
    Wire.endTransmission(false);

    Wire.requestFrom(_IIC_ADDR, (u8)1);
    while (1 != Wire.available()) {
        time_out_count++;
        if (time_out_count > 10) {
            return ERROR_COMM;
        }
        delay(1);
    }
    *byte = Wire.read();
    return NO_ERROR;
}

/** @brief I2C read 16bit value
    @param reg: Register address of operation object
    @param byte: The 16bit value to be read in.
    @return result of operation,non-zero if failed.
 * */
mcp_err_t MCP9600_IIC_OPRTS::IIC_read_16bit(u8 start_reg, u16* value) {
    mcp_err_t ret = NO_ERROR;
    u32 time_out_count = 0;
    u8 val = 0;
    *value = 0;
    Wire.beginTransmission(_IIC_ADDR);
    Wire.write(start_reg);
    Wire.endTransmission(false);

    Wire.requestFrom(_IIC_ADDR, sizeof(u16));
    while (sizeof(u16) != Wire.available()) {
        time_out_count++;
        if (time_out_count > 10) {
            return ERROR_COMM;
        }
        delay(1);
    }
    val = Wire.read();
    *value |= (u16)val << 8;
    val = Wire.read();
    *value |= val;
    return NO_ERROR;
}


/** @brief I2C read some bytes
    @param reg: Register address of operation object
    @param data: The buf  to be read in.
    @param data_len: The length of buf need to read in.
    @return result of operation,non-zero if failed.
 * */
mcp_err_t MCP9600_IIC_OPRTS::IIC_read_bytes(u8 start_reg, u8* data, u32 data_len) {
    mcp_err_t ret = NO_ERROR;
    u32 time_out_count = 0;
    Wire.beginTransmission(_IIC_ADDR);
    Wire.write(start_reg);
    Wire.endTransmission(false);

    Wire.requestFrom(_IIC_ADDR, data_len);
    while (data_len != Wire.available()) {
        time_out_count++;
        if (time_out_count > 10) {
            return ERROR_COMM;
        }
        delay(1);
    }

    for (int i = 0; i < data_len; i++) {
        data[i] = Wire.read();
    }
    return ret;
}


/** @brief change the I2C address from default.
    @param IIC_ADDR: I2C address to be set
 * */
void MCP9600_IIC_OPRTS::set_iic_addr(u8 IIC_ADDR) {
    _IIC_ADDR = IIC_ADDR;
}

void MCP9600_IIC_OPRTS::set_iic_frequency(u32 IIC_FREQUENCY) {
    _IIC_FREQUENCY = IIC_FREQUENCY;
}