liweiyan/shoe_mcu2.1.1/hal/fml_single_line_simplex.c

/**

通讯线平时空闲时处于低电平，由一个100MS的高电平作为引导码来唤醒从机。然后发送一个字节串行数据。完毕后通讯线恢复到空闲状态的低电平。
对于从机来说，接受完8位数据，或检测到一个连续5t的低电平（结束码）即可认为通讯结束。

在引导码之后，数据码之前，增加一位波特率校准位。该校准位由一个低电平和高电平构成，低电平和高电平分别 =1t。在从机被唤醒后，检测到引导码结束后，先
对校准位进行时间测量。为后续数据码的识别提供标准时间（“t”值）。


数据码共8位（低位bit0先发）；每位数据码由一个低电平和一个高电平组成；低电平时间固定=1t；高电平时间=1t代表逻辑‘0’，=3t代表逻辑‘1’； 


结束码为一个持续时间 >= 5t的低电平。检测到结束码后通讯结束。


*/

/*Includes ----------------------------------------------*/
#include "tool.h"
#include "bsp_pwm.h"
#include "fml_single_line_simplex.h"


/*Private macro ------------------------------------------------*/
#define			FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_OUTPUT														do \
																																								{ \
																																									nrfx_gpiote_out_uninit(FML_SINGLE_LINE_SIMPLEX_PIN); \
																																									nrfx_gpiote_in_uninit(FML_SINGLE_LINE_SIMPLEX_PIN); \
																																									nrfx_gpiote_out_config_t out_config = GPIOTE_CONFIG_OUT_SIMPLE(0); \
																																									APP_ERROR_CHECK(nrfx_gpiote_out_init(FML_SINGLE_LINE_SIMPLEX_PIN, &out_config)); \
																																									nrf_gpio_cfg_watcher(FML_SINGLE_LINE_SIMPLEX_PIN); \
																																								}while(0)																										//配置引脚为输出，且初始化为低电平						

#define 		FML_SINGLE_LINE_SIMPLEX_SET_PIN																			nrfx_gpiote_out_set(FML_SINGLE_LINE_SIMPLEX_PIN)						//设置IO引脚高电平
																																								
#define 		FML_SINGLE_LINE_SIMPLEX_CLEAR_PIN																		nrfx_gpiote_out_clear(FML_SINGLE_LINE_SIMPLEX_PIN)					//设置IO引脚低电平	





																																								

#define			FML_SINGLE_LINE_SIMPLEX_GET_PIN(X)																	do \
																																								{ \
																																									if(nrfx_gpiote_in_is_set(FML_SINGLE_LINE_SIMPLEX_PIN)) \
																																										X = 1; \
																																									else \
																																										X = 0; \
																																								}while(0)																										//读取IO引脚高低电平				
																																								
#define			FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT_H_PULL						0																														//主机中断接收上下拉配置
																																								
#define			FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT_S_PULL						1																														//从机中断接收上下拉配置

#define			FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT(HANDLER,X)				do \
																																								{ \
																																									nrfx_gpiote_out_uninit(FML_SINGLE_LINE_SIMPLEX_PIN); \
																																									nrfx_gpiote_in_uninit(FML_SINGLE_LINE_SIMPLEX_PIN); \
																																									nrfx_gpiote_in_config_t in_config;									\
																																									in_config.sense = NRF_GPIOTE_POLARITY_TOGGLE;				\
																																									if(X == 0)in_config.pull = NRF_GPIO_PIN_NOPULL;			\
																																									if(X == 1)in_config.pull = NRF_GPIO_PIN_PULLUP;			\
																																									if(X == 2)in_config.pull = NRF_GPIO_PIN_PULLDOWN;		\
																																									in_config.is_watcher = false;												\
																																									in_config.hi_accuracy = true;												\
																																									in_config.skip_gpio_setup = false;									\
																																									APP_ERROR_CHECK(nrfx_gpiote_in_init(FML_SINGLE_LINE_SIMPLEX_PIN, &in_config, HANDLER)); \
																																									nrfx_gpiote_in_event_enable(FML_SINGLE_LINE_SIMPLEX_PIN, true); \
																																								}while(0)																										//设置IO引脚为输入高低电平中断

#define			FML_SINGLE_LINE_SIMPLEX_RECEIVE_MAX_LEN															1024																												//接收缓存的最大字节长度																																						
																																																																															
#define			FML_SINGLE_LINE_SIMPLEX_APPROX_EQUAL_TO(A,B,ERROR,BOOL)							do \
																																								{ \
																																									uint32_t error; \
																																									if(A > B){error = A - B;if(error <= ERROR)BOOL = true;else BOOL = false;} \
																																									else {error = B - A;if(error <= ERROR)BOOL = true;else BOOL = false;} \
																																								}while(0)																										//判断俩个数是否约等于	
																																								
#define			FML_SINGLE_LINE_SIMPLEX_WAIT_TIMES(US)															do \
																																								{ \
																																									uint32_t tim1; \
																																									uint32_t tim2; \
																																									uint32_t distance; \
																																									tim1 = NRF_RTC0->COUNTER; \
																																									do	\
																																									{	\
																																										tim2 = NRF_RTC0->COUNTER; \
																																										if(tim2 < tim1)tim2 += 16777216; \
																																										distance = (tim2 - tim1)/32.768 * 1000; \
																																									}while(distance < US); \
																																								}while(0)																										//等待时间							单位：us

#define			FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT(X)															do \
																																								{ \
																																									FML_SINGLE_LINE_SIMPLEX_CLEAR_PIN; \
																																									FML_SINGLE_LINE_SIMPLEX_WAIT_TIMES(FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T); \
																																									if(X == 1) \
																																										FML_SINGLE_LINE_SIMPLEX_SET_PIN; \
																																									else \
																																										FML_SINGLE_LINE_SIMPLEX_CLEAR_PIN; \
																																								}while(0)																										//发送一个位																																																																																
																																																																									
#define			FML_SINGLE_LINE_SIMPLEX_GET_TIMESTAMP(X)														X = NRF_RTC0->COUNTER																				//获取时间戳

#define			FML_SINGLE_LINE_SIMPLEX_GET_DISTANCE_FOR_TIMESTAMP(TIMESTAMP,US)		do \
																																								{ \
																																									uint32_t tim = NRF_RTC0->COUNTER; \
																																									if(tim < TIMESTAMP) tim += 16777216; \
																																									US = (tim - TIMESTAMP)/32.768 * 1000; \
																																								}while(0)																										//获取与时间戳的差			单位：us
																																								
#define			FML_SINGLE_LINE_SIMPLEX_PWM_SEND_ONE_BIT_TIEMS											(FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS/8)							//PWM发送一位的时间   	单位：us     1 -> 8us    125 -> 1ms   3750 -> 30ms
																																								
#define			FML_SINGLE_LINE_SIMPLEX_PWM_SEQ_VALUES_LEN													((FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T + FML_SINGLE_LINE_SIMPLEX_BOOT_CODE_T + \
																																								2*FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T + \
																																								8*FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T + 8*FML_SINGLE_LINE_SIMPLEX_HIGHT_LEVEL_T + \
																																								FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T + FML_SINGLE_LINE_SIMPLEX_HIGHT_LEVEL_T + \
																																								FML_SINGLE_LINE_SIMPLEX_END_CODE_T*2) / FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS \
																																								)																														//PWM发送一个字节的序列大小，END_CODE*2是为了余量。
																																								
#define			FML_SINGLE_LINE_SIMPLEX_PWM_LEVEL_HIGHT															0																														//PWM高电平
																																								
#define			FML_SINGLE_LINE_SIMPLEX_PWM_LEVEL_LOW																0x8000																											//PWM低电平																																								
																																								
#define			FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(SEQ_VALUES,INDEX,COUNT,X)		do \
																																								{ \
																																									uint16_t	level; \
																																									if(X==1)level = FML_SINGLE_LINE_SIMPLEX_PWM_LEVEL_HIGHT;else level = FML_SINGLE_LINE_SIMPLEX_PWM_LEVEL_LOW; \
																																									for(int i = 0; i < COUNT; i++)SEQ_VALUES[INDEX++] =level; \
																																								}while(0)																										//PWM等待时间转为序列		单位：us
																																							
																																					


/*STRUCTION -----------------------------------------------------*/
typedef struct _fml_single_line_simplex
{
	FML_SINGLE_LINE_SIMPLEX_ROLE_e					role;																																															//角色
	
	bool																		start_receive;																																										//开始接收标志位
	
	uint8_t																	receive_bit_num;																																									//接收到的字节当前位
	
	volatile unsigned char* 								RxW;																																															//接收缓存区写指针
	
	volatile unsigned char* 								RxR;																																															//接收缓存区读指针
	
	uint8_t																	receive_buff[FML_SINGLE_LINE_SIMPLEX_RECEIVE_MAX_LEN];																						//接收缓存区
	
	fml_single_line_half_duplex_receive_cb  receive_cb;																																												//接收回调
	
	uint32_t 																pwm_pin_channel[4];																																								//PWM通道引脚，每个PWM模块只支持4个通道
	
	uint16_t 																pwm_cycle_time;																																										//PWM周期时间
	
	uint32_t 																pwm_mode;																																													//PWM模式
	
	pwm_values_common_t 										fml_single_line_simplex_pwm_seq_values[FML_SINGLE_LINE_SIMPLEX_PWM_SEQ_VALUES_LEN];								//PWM序列值
	
	nrf_pwm_sequence_t 											*fml_single_line_simplex_pwm_seq;																																	//PWM序列指针
	
	bool																		pwm_transfer_is_done;																																							//PWM传输是否完成标志
	
} Fml_Single_Line_Simplex_t;



/*Local Variable ----------------------------------------------*/
static Fml_Single_Line_Simplex_t 	ob_fml_single_line_simplex;


/*Local Functions ----------------------------------------------*/
static void fml_single_line_receive_buff_push(uint8_t	*p,  int len)
{
	volatile unsigned char *W=ob_fml_single_line_simplex.RxW; 								//这里要与上面指针相同
	if(len<=0) return;
	for(int i=0;i<len;i++){
		W=ob_fml_single_line_simplex.RxW+1; 
		if(W>=ob_fml_single_line_simplex.receive_buff+FML_SINGLE_LINE_SIMPLEX_RECEIVE_MAX_LEN) W=ob_fml_single_line_simplex.receive_buff;        //取下一位置(到顶转到底)
		if(W!=ob_fml_single_line_simplex.RxR){*ob_fml_single_line_simplex.RxW=*(p+i); ob_fml_single_line_simplex.RxW=W;}
		else break;
	}
}

static unsigned int fml_single_line_receive_CheckLen(void) //检查RX接收了多少数据
{   
	unsigned int Len; //short 
	volatile unsigned char *W=ob_fml_single_line_simplex.RxW; 
	volatile unsigned char *R=ob_fml_single_line_simplex.RxR; 
	
	if(W>=R)Len=W-R;else Len=(W+FML_SINGLE_LINE_SIMPLEX_RECEIVE_MAX_LEN)-R;         //这样正确(中途中断改变也变不了结果)
    return Len; 
}

static uint8_t fml_single_line_receive_buff_pop(void)
{
	unsigned char R=*ob_fml_single_line_simplex.RxR;       //读数
	
	if(ob_fml_single_line_simplex.RxR!=ob_fml_single_line_simplex.RxW)
	{	
		if(ob_fml_single_line_simplex.RxR+1>=(ob_fml_single_line_simplex.receive_buff+FML_SINGLE_LINE_SIMPLEX_RECEIVE_MAX_LEN))
			ob_fml_single_line_simplex.RxR = ob_fml_single_line_simplex.receive_buff;
		else 
			ob_fml_single_line_simplex.RxR++;
	}//下标
	return R; 
}

static void fml_single_line_in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
	static uint8_t	receive_byte = 0;
	static uint8_t	flow = 0;
	static uint32_t	timestamp,last_timestamp;
	static uint32_t	distance;
	static uint32_t	calibration_compensate = FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T / 2;	//若线太长，拉高拉低时间过长，导致校验码时间与设定好的校验码时间不一致，初始设定能接受的延迟为校准码的一半
	static int			Parity_Check;
	
	uint32_t				level;
	bool						condition;

	FML_SINGLE_LINE_SIMPLEX_GET_PIN(level);
	
//	//test-----------------
//	JS_RTT_Print(level,0,0);
//	return;
//	//test-----------------	
	
//	SEGGER_RTT_printf(0,"level:%d\n",level);	
	
	switch(flow)
	{
		case 0:											//接收引导码阶段
			if(level == 1)
			{
				//这样子读取减少误差产生---------->
				last_timestamp = timestamp;
				FML_SINGLE_LINE_SIMPLEX_GET_TIMESTAMP(timestamp);
				FML_SINGLE_LINE_SIMPLEX_GET_DISTANCE_FOR_TIMESTAMP(last_timestamp,distance);
				//<----------这样子读取减少误差产生		
				
				if(timestamp !=0 && last_timestamp != 0)
				{
					if(distance >= FML_SINGLE_LINE_SIMPLEX_END_CODE_T)																										//结束码错误
					{
						flow = 1;
					}
					else
					{
						flow = 0;
					}
				}
				else
				{
					flow = 1;							//第一次运行
				}
				
				
				ob_fml_single_line_simplex.start_receive = false;
				ob_fml_single_line_simplex.receive_bit_num = 0;				
				receive_byte = 0;									
			}
			break;
		
		case 1:											//接收校准码阶段
			if(level == 0)
			{
				//这样子读取减少误差产生---------->
				last_timestamp = timestamp;
				FML_SINGLE_LINE_SIMPLEX_GET_TIMESTAMP(timestamp);
				FML_SINGLE_LINE_SIMPLEX_GET_DISTANCE_FOR_TIMESTAMP(last_timestamp,distance);
				//<----------这样子读取减少误差产生
				FML_SINGLE_LINE_SIMPLEX_APPROX_EQUAL_TO(distance,FML_SINGLE_LINE_SIMPLEX_BOOT_CODE_T,calibration_compensate,condition);
				if(!condition)
				{
					flow = 0;																																														//引导码错误
				}
			}
			else
			{
				FML_SINGLE_LINE_SIMPLEX_GET_TIMESTAMP(timestamp);		
				flow = 2;
			}
			break;
		
		case 2:											//接收数据码阶段
			if(level == 0)
			{
				//这样子读取减少误差产生---------->
				last_timestamp = timestamp;
				FML_SINGLE_LINE_SIMPLEX_GET_TIMESTAMP(timestamp);
				FML_SINGLE_LINE_SIMPLEX_GET_DISTANCE_FOR_TIMESTAMP(last_timestamp,distance);
				//<----------这样子读取减少误差产生
				
				if(ob_fml_single_line_simplex.start_receive == false)
				{
					FML_SINGLE_LINE_SIMPLEX_APPROX_EQUAL_TO(distance,FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T,calibration_compensate,condition);
					if(condition)
					{
						ob_fml_single_line_simplex.start_receive = true;																									//校准码无误
						Parity_Check = 0;
					}
					else
					{
						flow = 0;	
					}
				}
				else
				{
					FML_SINGLE_LINE_SIMPLEX_APPROX_EQUAL_TO(distance,FML_SINGLE_LINE_SIMPLEX_HIGHT_LEVEL_T,calibration_compensate,condition);
					if(condition){receive_byte |= (0x01 << ob_fml_single_line_simplex.receive_bit_num);Parity_Check++;}
					else receive_byte &= ~(0x01 << ob_fml_single_line_simplex.receive_bit_num);
					
					ob_fml_single_line_simplex.receive_bit_num++;
					
					if(ob_fml_single_line_simplex.receive_bit_num == 8)
					{
						flow = 3;
					}
				}
			}
			else
			{
				FML_SINGLE_LINE_SIMPLEX_GET_TIMESTAMP(timestamp);
			}
			break;
			
		case 3:											//接收奇偶校验码阶段
			if(level == 1)
			{
				FML_SINGLE_LINE_SIMPLEX_GET_TIMESTAMP(timestamp);
			}
			else
			{
				//这样子读取减少误差产生---------->
				last_timestamp = timestamp;
				FML_SINGLE_LINE_SIMPLEX_GET_TIMESTAMP(timestamp);
				FML_SINGLE_LINE_SIMPLEX_GET_DISTANCE_FOR_TIMESTAMP(last_timestamp,distance);
				//<----------这样子读取减少误差产生			

				if(ob_fml_single_line_simplex.start_receive == true && ob_fml_single_line_simplex.receive_bit_num == 8) //接收结束码阶段
				{
					
					FML_SINGLE_LINE_SIMPLEX_APPROX_EQUAL_TO(distance,FML_SINGLE_LINE_SIMPLEX_HIGHT_LEVEL_T,calibration_compensate,condition);
					if(condition)
					{
						if((Parity_Check % 2) != 0)				//奇校验通过
						{
							//接收字节
							fml_single_line_receive_buff_push(&receive_byte,  1);
							//接收回调
							if(ob_fml_single_line_simplex.receive_cb != NULL)ob_fml_single_line_simplex.receive_cb();
						}
					}
					else
					{
						if((Parity_Check % 2) == 0)				//偶校验通过
						{
							//接收字节
							fml_single_line_receive_buff_push(&receive_byte,  1);
							//接收回调
							if(ob_fml_single_line_simplex.receive_cb != NULL)ob_fml_single_line_simplex.receive_cb();
						}
					}
				}	
				flow = 0;			
			}
			break;
	}
}

static int fml_single_line_transfer_one_byte(uint8_t value)
{
	uint8_t	bit;
	int			Parity_Check;
	
	//发送引导码
	FML_SINGLE_LINE_SIMPLEX_CLEAR_PIN;
	FML_SINGLE_LINE_SIMPLEX_WAIT_TIMES(FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T);
	FML_SINGLE_LINE_SIMPLEX_SET_PIN;
	FML_SINGLE_LINE_SIMPLEX_WAIT_TIMES(FML_SINGLE_LINE_SIMPLEX_BOOT_CODE_T);
	
	//发送校准码
	FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT(1);
	FML_SINGLE_LINE_SIMPLEX_WAIT_TIMES(FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T);
	
	//发送数据码
	Parity_Check = 0;
	for(int i=0; i<8;i++)
	{
		bit = ((value >> i)&0x01);
		FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT(1);
		if(bit == 1){FML_SINGLE_LINE_SIMPLEX_WAIT_TIMES(FML_SINGLE_LINE_SIMPLEX_HIGHT_LEVEL_T);Parity_Check++;}
		else FML_SINGLE_LINE_SIMPLEX_WAIT_TIMES(FML_SINGLE_LINE_SIMPLEX_LOW_LEVEL_T);
	}
	
	//发送奇偶校验码
	FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT(1);
	if(Parity_Check % 2 == 0)FML_SINGLE_LINE_SIMPLEX_WAIT_TIMES(FML_SINGLE_LINE_SIMPLEX_LOW_LEVEL_T);
	else FML_SINGLE_LINE_SIMPLEX_WAIT_TIMES(FML_SINGLE_LINE_SIMPLEX_HIGHT_LEVEL_T);
	
	//发送结束码
	FML_SINGLE_LINE_SIMPLEX_CLEAR_PIN;
	FML_SINGLE_LINE_SIMPLEX_WAIT_TIMES(FML_SINGLE_LINE_SIMPLEX_END_CODE_T);
	
	return 0;
}

static int fml_single_line_pwm_transfer_one_byte(uint8_t value)
{
	uint8_t	bit;
	int			Parity_Check;
	int			index;
	
	//清空序列值
	for(int i=0; i<FML_SINGLE_LINE_SIMPLEX_PWM_SEQ_VALUES_LEN; i++)ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values[i] = FML_SINGLE_LINE_SIMPLEX_PWM_LEVEL_LOW;

	//发送引导码
	index = 1;
	FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, \
																				index, \
																				(FML_SINGLE_LINE_SIMPLEX_BOOT_CODE_T/FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS), \
																				1);
	 
	//发送校准码
	FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, \
																				index, \
																				(FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T/FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS), \
																				0);
	FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, \
																				index, \
																				(FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T/FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS), \
																				1);
	
	//发送数据码
	Parity_Check = 0;
	for(int i=0; i<8;i++)
	{
		bit = ((value >> i)&0x01);
		FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, \
																					index, \
																					(FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T/FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS), \
																					0);
		if(bit == 1)
		{
			FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, \
																						index, \
																						(FML_SINGLE_LINE_SIMPLEX_HIGHT_LEVEL_T/FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS), \
																						1);
			Parity_Check++;
		}
		else
		{
			FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, \
																						index, \
																						(FML_SINGLE_LINE_SIMPLEX_LOW_LEVEL_T/FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS), \
																						1);
		}
	}
	
	//发送奇偶校验码
	FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, \
																				index, \
																				(FML_SINGLE_LINE_SIMPLEX_CALIBRATION_CODE_T/FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS), \
																				0);
	
	if(Parity_Check % 2 == 0)
	{
		FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, \
																					index, \
																					(FML_SINGLE_LINE_SIMPLEX_LOW_LEVEL_T/FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS), \
																					1);
	}
	else
	{
		FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, \
																					index, \
																					(FML_SINGLE_LINE_SIMPLEX_HIGHT_LEVEL_T/FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS), \
																					1);
	}
	
	//发送结束码
	FML_SINGLE_LINE_SIMPLEX_PWM_WAIT_TIMES(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, \
																				index, \
																				(FML_SINGLE_LINE_SIMPLEX_END_CODE_T/FML_SINGLE_LINE_SIMPLEX_SEND_ONE_BIT_TIEMS), \
																				0);	
	
	return index;
}

static void fml_single_line_pwm_transfer_callback(nrfx_pwm_evt_type_t event_type)
{
	uint32_t err_code;
	
	switch(event_type)
	{
		case NRFX_PWM_EVT_FINISHED:			//Sequence playback finished.
			//取消pwm
			Pwm1_UnInitialize();
			//重新GPIOTE 驱动初始化：
			err_code = nrf_drv_gpiote_init();
			APP_ERROR_CHECK(err_code);	
			//配置接收中断
			if(ob_fml_single_line_simplex.role == FML_SINGLE_LINE_SIMPLEX_ROLE_HOST)
				FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT(fml_single_line_in_pin_handler,FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT_H_PULL);
			else
				FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT(fml_single_line_in_pin_handler,FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT_S_PULL);
			//修改状态
			ob_fml_single_line_simplex.pwm_transfer_is_done = true;
			break;
		
		default:
			break;
	}
}

/*API ----------------------------------------------*/
/**
	@brief 		初始化单线单工驱动
	@param 		role									- [in]	角色
	@return 	错误代码							- [out]	-1失败，0成功
*/
int fml_single_line_simplex_Init(FML_SINGLE_LINE_SIMPLEX_ROLE_e role)
{
	uint32_t err_code;
	
	// GPIOTE 驱动初始化：
	err_code = nrf_drv_gpiote_init();
	APP_ERROR_CHECK(err_code);	
	//重置
	memset(&ob_fml_single_line_simplex,0,sizeof(ob_fml_single_line_simplex));
	//初始化结构体
	ob_fml_single_line_simplex.start_receive 				= false;
	
	ob_fml_single_line_simplex.RxW 									= ob_fml_single_line_simplex.receive_buff;
	
	ob_fml_single_line_simplex.RxR 									= ob_fml_single_line_simplex.receive_buff;
	
	ob_fml_single_line_simplex.pwm_pin_channel[0] 	= FML_SINGLE_LINE_SIMPLEX_PIN;
	
	ob_fml_single_line_simplex.pwm_pin_channel[1] 	= NRF_DRV_PWM_PIN_NOT_USED;
	
	ob_fml_single_line_simplex.pwm_pin_channel[2] 	= NRF_DRV_PWM_PIN_NOT_USED;
	
	ob_fml_single_line_simplex.pwm_pin_channel[3] 	= NRF_DRV_PWM_PIN_NOT_USED;
	
	ob_fml_single_line_simplex.pwm_cycle_time				=	FML_SINGLE_LINE_SIMPLEX_PWM_SEND_ONE_BIT_TIEMS;		
	
	ob_fml_single_line_simplex.pwm_mode							=	PWM_FLAG_STOP;
	
	ob_fml_single_line_simplex.pwm_transfer_is_done = true;
	
	ob_fml_single_line_simplex.role									=	role;
	
	
	//配置接收中断
	if(ob_fml_single_line_simplex.role == FML_SINGLE_LINE_SIMPLEX_ROLE_HOST)
		FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT(fml_single_line_in_pin_handler,FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT_H_PULL);
	else
		FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT(fml_single_line_in_pin_handler,FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT_S_PULL);
	
	
	return 0;
}

/**
	@brief 		取消初始化单线单工驱动
	@param 		无
	@return 	错误代码							- [out]	-1失败，0成功
*/
int fml_single_line_simplex_UnInit(void)
{
	//取消pwm
	Pwm1_UnInitialize();
	//取消gpiote
	nrf_drv_gpiote_uninit();
	
	return 0;
}

/**
	@brief 		单线单工传输 —— 发送
	@param 		p_send 								- [in]	需要发送数据的指向地址
	@param 		len 									- [in]	数据长度
	@return 	错误代码							- [out]	-1失败，0成功
*/
int fml_single_line_simplex_transfer(char *p_send, int	len)
{
	uint32_t err_code;
	
	if(p_send == NULL)return -1;
	
	if(len < 0)return -1;
	
	//取消pwm
	Pwm1_UnInitialize();
	//取消gpiote
	nrf_drv_gpiote_uninit();
	
	//重新GPIOTE 驱动初始化：
	err_code = nrf_drv_gpiote_init();
	APP_ERROR_CHECK(err_code);	

	//配置发送
	FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_OUTPUT;
	
	for(int i=0; i<len; i++)
	{
		//发送一个字节
		fml_single_line_transfer_one_byte(p_send[i]);
	}
	
	//配置接收中断
	if(ob_fml_single_line_simplex.role == FML_SINGLE_LINE_SIMPLEX_ROLE_HOST)
		FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT(fml_single_line_in_pin_handler,FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT_H_PULL);
	else
		FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT(fml_single_line_in_pin_handler,FML_SINGLE_LINE_SIMPLEX_CONFIG_PIN_INPUT_INTERRUPT_S_PULL);	

	return 0;
}

/**
	@brief 		单线单工PWM传输 —— 发送
	@param 		byte 									- [in]	发送的字节
	@return 	错误代码							- [out]	-1失败，0成功
*/
int fml_single_line_simplex_pwm_transfer_onebyte(char byte)
{
	int len = 0;
	
	if(ob_fml_single_line_simplex.pwm_transfer_is_done == false)return -1;
	
	//取消gpiote
	nrf_drv_gpiote_uninit();
	//取消pwm
	Pwm1_UnInitialize();
	
	//重新初始化PWM
	SetPwm1_BaseClock(NRF_PWM_CLK_125kHz);
	SetPwm1_Channels(ob_fml_single_line_simplex.pwm_pin_channel[0], ob_fml_single_line_simplex.pwm_pin_channel[1], ob_fml_single_line_simplex.pwm_pin_channel[2], ob_fml_single_line_simplex.pwm_pin_channel[3]);
	SetPwm1_DutyCycleThreshold(ob_fml_single_line_simplex.pwm_cycle_time);
	SetPwm1_IRQ(fml_single_line_pwm_transfer_callback, PWM0_IRQ_PRIORITY);
	Pwm1_Initialize();	
	
	//将需要发送的字节转换对应的序列值
	len = fml_single_line_pwm_transfer_one_byte(byte);	
	
	ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq = Pwm1_SetComSequence(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq_values, len,0,0);
	
	//修改状态
	ob_fml_single_line_simplex.pwm_transfer_is_done = false;
	
	//播放序列
	if(SetSimplePwm1PlayBack(ob_fml_single_line_simplex.fml_single_line_simplex_pwm_seq, 1, ob_fml_single_line_simplex.pwm_mode) != NRF_SUCCESS)
	{
		return -1;
	}
	
	return 0;
}

/**
	@brief 		单线单工PWM传输是否完成 —— 发送
	@param 		无
	@return 	错误代码							- [out]	-1失败，0成功
*/
int fml_single_line_simplex_pwm_transfer_is_done(void)
{
	return (ob_fml_single_line_simplex.pwm_transfer_is_done == true)?0:-1;
}

/**
	@brief 		单线单工传输 —— 接收
	@param 		p_receive 						- [in]	需要接收数据的指向地址
	@param 		len 									- [in]	数据长度
	@return 	返回的长度
*/
int fml_single_line_simplex_receive(char *p_receive, uint32_t	len)
{
	uint8_t read_len;
	
	if(p_receive == NULL)return 0;
	
	read_len = fml_single_line_receive_CheckLen();
	
	if(read_len >= len)read_len = len;
	
	for(int i=0; i<read_len; i++)
	{
		p_receive[i] = fml_single_line_receive_buff_pop();
	}
	
	return read_len;
}

/**
	@brief 		单线单工传输 —— 接收回调
	@param 		cb 										- [in]	回调地址
	@return 	错误代码							- [out]	-1失败，0成功
*/
int fml_single_line_simplex_receive_time_callback(fml_single_line_half_duplex_receive_cb cb)
{
	if(cb == NULL)return -1;
	
	ob_fml_single_line_simplex.receive_cb = cb;
	
	return 0;
}