#include "serial_at_cmd_app.h"
#include "global_param.h"
#include <string.h>
#include <stdio.h>

uint8_t m_frame_data[MAX_FRAME_LEN] = {0};
uint8_t m_frame_data_len = 0;

void ParseFrame(void)
{
	if(!memcmp(m_frame_data, "DIS", 3))
	{
		g_com_map[ALARM_DISTANCE] = (m_frame_data[3]-'0')*1000 + (m_frame_data[4]-'0')*100 +  (m_frame_data[5]-'0')*10 + (m_frame_data[6]-'0');
		printf("When distance < %d cm, alarm is on.\n", g_com_map[ALARM_DISTANCE]);
		save_com_map_to_flash();
	}
	else if(!memcmp(m_frame_data, "DEV", 3))
	{
		g_com_map[ALARM_DEV] = m_frame_data[3]-'0';
		printf("Alarm device is %d. \n", g_com_map[ALARM_DEV]);
		save_com_map_to_flash();
	}
	else if(!memcmp(m_frame_data, "ID", 2))
	{
		g_com_map[DEV_ID] = 0;
		for(uint8_t i=2; i < m_frame_data_len; i++)
		{
			if(m_frame_data[i]<58 && m_frame_data[i]>47)
			{
				g_com_map[DEV_ID] = g_com_map[DEV_ID]*10 + m_frame_data[i]- '0';
			}
			else
			{
				printf("Error: Wrong ID.\r\n");
				break;
			}
		}
		printf("set dev id = %d. \r\n", g_com_map[DEV_ID]);
		save_com_map_to_flash();
	}
}

void UsartParseDataHandler(uint8_t data)
{
	static uint8_t s_usart_state = 0;
	static uint8_t s_data_pos;
	
	switch(s_usart_state)
	{
		case 0:
			if(data=='A')	s_usart_state=  1;
		break;
			
		case 1:
			if(data=='T')	s_usart_state = 2;
		break;
		
		case 2:
			if(data=='+')
			{ 
				s_usart_state = 3;
				s_data_pos = 0;
				m_frame_data_len = 0;
			}
		break;
			
		case 3:
			m_frame_data_len = s_data_pos;
			m_frame_data[s_data_pos++] = data;
			if(data == 0x0d)
			{
				s_usart_state = 4;
			}
			if(s_data_pos >= MAX_FRAME_LEN) //Èç¹û³¬¹ý×î´ó³¤¶È
			{
				m_frame_data_len = MAX_FRAME_LEN;
				ParseFrame();
				s_usart_state = 0;
			}
		break;
			
		case 4:
			if(data == 0x0a)
			{
				ParseFrame();
				s_usart_state = 0;
			}
		break;
			
		default: break;
	}
}