/**
  ******************************************************************************
  * @file    power_meter.c 
  * @author  Motor Control SDK Team, Yuwell Software XiangenWang
  * @brief   Voice Recognition Module Initialization Section, 
	           including peripheral initialization and message node insertion, etc.
	* @version 1.0		
  * @changelog     version 1.0 初始版本	      2026.1.6
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2025 Yuwell Software Danyang.Jiangsu.China.
  * All rights reserved.</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted, provided that the following conditions are met:
  *
  * 1. Redistribution of source code must retain the above copyright notice,
  *    this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. Neither the name of Yuwell Software nor the names of other
  *    contributors to this software may be used to endorse or promote products
  *    derived from this software without specific written permission.
  * 4. This software, including modifications and/or derivative works of this
  *    software, must execute solely and exclusively on microcontroller or
  *    microprocessor devices manufactured by or for Yuwell Software.
  * 5. Redistribution and use of this software other than as permitted under
  *    this license is void and will automatically terminate your rights under
  *    this license.
  *
  * THIS SOFTWARE IS PROVIDED BY Yuwell Software AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
  * SHALL Yuwell Software OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */ 
	/* USER CODE END Header */
	
#include "power_meter.h"


// 提供给外部的采样结果数据
EleC_V_data elec_v_data;


#if COULOMBMETER_SET_FUNC_ENABLE
/**
 * @brief  向BL0942指定寄存器写入24位数据
 * @param  addr: 寄存器地址(8位)
 * @param  reg_data: 待写入的数据缓冲区指针，需传入3个字节，低位在前、高位在后
 * @retval 无
 * @note   1. 数据格式：共24bit，不足位补0，低位先行发送
 *         2. 通信协议：UART发送帧格式为[写命令(BL0942_ADDR_W)+寄存器地址+3字节数据+校验和]
 *         3. 校验和计算：(写命令+地址+3字节数据)的低8位取反
 *         4. 数据发送大小限定为3个字节，超出部分无效
 */
static void coulombmeter_write_reg(uint8_t addr, uint8_t* reg_data)
{
    uint8_t check_sum = 0;
  
    // 1. 下发命令字节 BL0942_ADDR_W
    COULOMBMETER_UART_TRANS_BYTE(BL0942_ADDR_W);

    // 2. 下发需要写寄存器的地址
    COULOMBMETER_UART_TRANS_BYTE(addr);
  
    // 3. 发送需要往寄存器地址写入的数据
    COULOMBMETER_UART_TRANS_BYTE(reg_data[0]);
    COULOMBMETER_UART_TRANS_BYTE(reg_data[1]);
    COULOMBMETER_UART_TRANS_BYTE(reg_data[2]);
  
    // 4. 发送校验和
    check_sum = (BL0942_ADDR_W + addr + reg_data[0] + reg_data[1] + reg_data[2]);
    check_sum = ~(check_sum & 0xFF);
    COULOMBMETER_UART_TRANS_BYTE(check_sum);
}
#endif




/**
 * @brief  从BL0942指定寄存器读取数据
 * @param  addr: 寄存器地址(8位)
 * @retval 无
 * @note   1. 通信协议：UART发送帧格式为[读命令(BL0942_ADDR_R)+寄存器地址]
 *         2. 芯片收到读命令后，会在150us内通过UART返回4字节数据(3字节有效数据+1字节校验)
 *         3. 建议1s执行一次该函数，返回数据在UART接收中断中处理
 */
static void coulombmeter_read_reg(uint8_t addr)
{
    // 1. 下发命令字节 BL0942_ADDR_R
    COULOMBMETER_UART_TRANS_BYTE(BL0942_ADDR_R);
    
    // 2. 下发地址数据
    COULOMBMETER_UART_TRANS_BYTE(addr);
}





/**
 * @brief  初始化库仑计(UART5)相关硬件
 * @param  无
 * @retval 无
 * @note   1. 初始化内容：UART TX/RX引脚、UART通信参数、接收中断
 *         2. UART参数：9600波特率、8位数据位、1位停止位、无校验、全双工
 *         3. 中断配置：UART5接收缓冲区满中断，优先级设为2
 *         4. 初始化后清空全局数据结构体elec_v_data
 */
void User_PowerMeter_Init(void)
{
  
		FL_GPIO_InitTypeDef       GPIO_InitStruct;

    // 初始化GPIO
		GPIO_InitStruct.pin              = COULOMBMETER_UART_RX_GPIO_PIN;         
		GPIO_InitStruct.mode             = FL_GPIO_MODE_DIGITAL;
		GPIO_InitStruct.outputType       = FL_GPIO_OUTPUT_PUSHPULL;
		GPIO_InitStruct.pull             = FL_DISABLE;
		GPIO_InitStruct.remapPin         = FL_DISABLE;
		GPIO_InitStruct.analogSwitch     = FL_DISABLE;
		
		FL_GPIO_Init(COULOMBMETER_UART_RX_GPIO_PORT, &GPIO_InitStruct);
	
		GPIO_InitStruct.pin              = COULOMBMETER_UART_TX_GPIO_PIN;
		FL_GPIO_Init(COULOMBMETER_UART_TX_GPIO_PORT, &GPIO_InitStruct);

		// 初始化串口参数
		FL_UART_InitTypeDef UART_InitStruct = {0};
		UART_InitStruct.baudRate            = 9600;							                //波特率
		UART_InitStruct.dataWidth           = FL_UART_DATA_WIDTH_8B;			      //数据位数
		UART_InitStruct.stopBits            = FL_UART_STOP_BIT_WIDTH_1B;				//停止位
		UART_InitStruct.parity              = FL_UART_PARITY_NONE;				      //奇偶校验
		UART_InitStruct.transferDirection   = FL_UART_DIRECTION_TX_RX;	        //接收-发送使能
		FL_UART_Init(COULOMBMETER_USED_UART_NUM, &UART_InitStruct);
		
		NVIC_DisableIRQ(COULOMBMETER_IRQn);
		NVIC_SetPriority(COULOMBMETER_IRQn,2);                                  //中断优先级配置
		NVIC_EnableIRQ(COULOMBMETER_IRQn);
		
		// 开启接收中断
		FL_UART_ClearFlag_RXBuffFull(COULOMBMETER_USED_UART_NUM);
		FL_UART_EnableIT_RXBuffFull(COULOMBMETER_USED_UART_NUM);

    // 清空结果
    memset(&elec_v_data, 0, sizeof(elec_v_data));

    
}




/**
 * @brief  刷新库仑计的电压/电流数据（轮询读取）
 * @param  无
 * @retval 无
 * @note   1. 推荐1s调用一次该函数，交替读取电压和电流有效值
 *         2. 首次调用读取电流寄存器(Addr_I_RMS)，第二次读取电压寄存器(Addr_V_RMS)，循环交替
 *         3. 触发读取后，会设置对应的等待状态，数据接收和解析在UART中断中完成
 *         4. 最终解析后的电压/电流值存储在全局变量elec_v_data中
 */
void User_Coulombmeter_Data_refresh(void)
{
    static Bus_Mod mod = MOD_CURRENT_METER;
  
    if(mod == MOD_VOLTAGE_METER)
    {
        mod = MOD_CURRENT_METER;
        coulombmeter_read_reg(Addr_V_RMS);
        
        elec_v_data.bus_com_stm = BUS_COM_STATE_WAITE_VOLTAGE;   // 转入等待电压数据状态
        elec_v_data.current_index = 0;
        elec_v_data.voltage_raw = 0;
    }else{
        
        mod = MOD_VOLTAGE_METER;
        coulombmeter_read_reg(Addr_I_RMS);
        
        elec_v_data.bus_com_stm = BUS_COM_STATE_WAITE_CURRENT;   // 转入等待电压数据状态
        elec_v_data.current_index = 0;
        elec_v_data.current_raw = 0;
    }
}





/**
 * @brief  UART5中断服务函数（库仑计数据接收处理）
 * @param  无
 * @retval 无
 * @note   1. 仅处理接收缓冲区满中断(RXBuffFull)
 *         2. 根据当前通信状态(BUS_COM_STATE)分别处理电压/电流数据
 *         3. 数据接收格式：3字节有效数据(低位在前)+1字节校验和
 *         4. 校验和验证通过后，转换为实际电压(V)/电流(mA)值并更新全局变量
 *         5. 接收中断标志通过读取RXBuff寄存器自动清除，需手动清除RXBuffFull标志
 */
void UART5_IRQHandler(void)
{

    // 接收中断处理
    if(FL_UART_IsEnabledIT_RXBuffFull(COULOMBMETER_USED_UART_NUM) &&
       FL_UART_IsActiveFlag_RXBuffFull(COULOMBMETER_USED_UART_NUM))
    {
        
        if(elec_v_data.bus_com_stm == BUS_COM_STATE_WAITE_VOLTAGE)
        {
          
            //接收中断标志可通过读取rxreg寄存器清除
            uint8_t tmp_data = 0;
            tmp_data = FL_UART_ReadRXBuff(COULOMBMETER_USED_UART_NUM);  
          
            if(elec_v_data.current_index < 3)
            {
                elec_v_data.voltage_raw |= (tmp_data<<(elec_v_data.current_index*8));
            }
          
            elec_v_data.voltage_array[elec_v_data.current_index++] = tmp_data; 

            if(elec_v_data.current_index == 4)
            {
                
                uint8_t checkSum = ~((elec_v_data.voltage_array[0] + elec_v_data.voltage_array[1] + elec_v_data.voltage_array[2] + BL0942_ADDR_R + Addr_V_RMS)&0xFF);
                if(elec_v_data.voltage_array[3] == checkSum)
                {
                    // 校验正确对数据进行赋值
                    elec_v_data.bus_com_stm = BUS_COM_STATE_IDLE;
                      
                    elec_v_data.bus_rms_voltage_V =elec_v_data.voltage_raw / Voltage_K;
                  
                    elec_v_data.voltage_raw = 0;
                
                    elec_v_data.current_index = 0;
                }
            
            }

            
        }else if(elec_v_data.bus_com_stm == BUS_COM_STATE_WAITE_CURRENT)
        {
            uint8_t tmp_data = 0;
            tmp_data = FL_UART_ReadRXBuff(COULOMBMETER_USED_UART_NUM); 

            if(elec_v_data.current_index < 3)
            {
                elec_v_data.current_raw |= (tmp_data<<(elec_v_data.current_index*8));
            }
            
            elec_v_data.current_array[elec_v_data.current_index++] = tmp_data; 
          
            if(elec_v_data.current_index == 4)
            {
                
                uint8_t checkSum = ~((elec_v_data.current_array[0] + elec_v_data.current_array[1] + elec_v_data.current_array[2] + BL0942_ADDR_R + Addr_I_RMS)&0xFF);
              
                if(elec_v_data.current_array[3] == checkSum)
                {
                    // 校验正确对数据进行赋值
                    elec_v_data.bus_com_stm = BUS_COM_STATE_IDLE;
                      
                    elec_v_data.bus_rms_current_mA =elec_v_data.current_raw*100 / Current_K;
                  
                    elec_v_data.current_raw = 0;
                
                    elec_v_data.current_index = 0;
                }
            
            }

        }
        
        FL_UART_ClearFlag_RXBuffFull(COULOMBMETER_USED_UART_NUM);
    }

}


/************************ (C) COPYRIGHT YUWELL *****END OF FILE****/