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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// File name : pwm_drv.h
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// Version : V0.1
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#ifndef PWM_DRV_H_
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#define PWM_DRV_H_
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#include "pwm_reg.h"
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#define PWM ((PWM_TypeDef *)(PWM_BASE_ADDR))
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//PWM_PORT DEFINITION
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#define PWM_PORT0 0
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#define PWM_PORT1 1
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#define PWM_PORT2 2
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#define PWM_PORT3 3
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#define IS_PWM_PORTx(port) (((port) == PWM_PORT0) || \
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((port) == PWM_PORT1) || \
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((port) == PWM_PORT2) || \
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((port) == PWM_PORT3))
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//PWM Clock divider
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#define PWM_CLK_DIV_1 4
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#define PWM_CLK_DIV_2 0
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#define PWM_CLK_DIV_4 1
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#define PWM_CLK_DIV_8 2
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#define PWM_CLK_DIV_16 3
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#define IS_PWM_CLK_DIV(div) (((div) == PWM_CLK_DIV_1) || \
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((div) == PWM_CLK_DIV_2) || \
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((div) == PWM_CLK_DIV_4) || \
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((div) == PWM_CLK_DIV_8) || \
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((div) == PWM_CLK_DIV_16))
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#define PWM_PULLUP_EN 1
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#define PWM_PULLUP_DIS 0
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#define IS_PWM_PULLUP_STA(sta) (((sta) == PWM_PULLUP_EN) || \
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((sta) == PWM_PULLUP_DIS))
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/*******************************************************************************
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* Function Name : PWM_OutputInit
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* Description : PWM输出初始化，输出脉冲
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* Input : - PWMx : PWM channel；where x can be 0, 1, 2, 3 to select the PWM peripheral.
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* - PWM_Prescaler: PWM预分频值
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* - PWM_Csr：Clock Source Selection
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* 取值：PWM_CLK_DIV_1、PWM_CLK_DIV_16、PWM_CLK_DIV_8、PWM_CLK_DIV_4、PWM_CLK_DIV_2
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* - PWM_Period：PWM Counter/Timer Loaded Value, data range : 65535~0 (Unit : 1 PWM clock cycle)
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* One PWM cycle width = PWM_Period + 1
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* - PWM_Width：PWM Comparator Register Value;data range : 65535~0 (Unit : 1 PWM clock cycle)
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* used to determine PWM output duty ratio
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* PWM_Width >= PWM_Period : PWM output is always high
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* PWM_Width >= PWM_Period : PWM output high = (PWM_Width + 1) unit
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* PWM_Width = 0 : PWM output high = 1 unit
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* - PWM_CHxINV_Flg：Timer Inverter ON/OFF flag
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* 1 = Inverter ON
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* 0 = Inverter OFF
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*
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* Output : None
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* Return : None
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*******************************************************************************/
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extern void PWM_OutputInit(UINT8 PWMx, UINT8 PWM_Prescaler, UINT8 PWM_Csr, UINT16 PWM_Period, UINT16 PWM_Width, UINT8 PWM_CHxINV_Flg);
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extern void PWM3_OutputInit(UINT8 PWMx, UINT8 PWM_Prescaler, UINT8 PWM_Csr, UINT16 PWM_Period, UINT16 PWM_Width, UINT8 PWM_CHxINV_Flg);
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/*******************************************************************************
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* Function Name : PWM_InputInit
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* Description : PWM输入初始化，可触发中断
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* Input : - - PWMx : PWM channel；where x can be 0, 1, 2, 3 to select the PWM peripheral.
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* - PWM_Prescaler: PWM预分频值
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* - PWM_Csr：Clock Source Selection
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* 取值：PWM_CLK_DIV_1、PWM_CLK_DIV_16、PWM_CLK_DIV_8、PWM_CLK_DIV_4、PWM_CLK_DIV_2
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* - PWM_Period：PWM Counter/Timer Loaded Value, data range : 65535~0 (Unit : 1 PWM clock cycle)
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* One PWM cycle width = PWM_Period + 1
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*
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* Output : None
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* Return : None
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*******************************************************************************/
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extern void PWM_InputInit(UINT8 PWMx, UINT8 pwm_prescaler, UINT8 pwm_csr,UINT16 pwm_period);
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/*******************************************************************************
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* Function Name : PWM_ISR
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* Description : PWM中断处理函数
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* Input : - None
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*
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* Output : None
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* Return : None
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*******************************************************************************/
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extern void PWM_ISR(void);
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/*******************************************************************************
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* Function Name : PWM_Start
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* Description : PWM打开
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* Input : - PWMx : PWM channel；where x can be 0, 1, 2, 3 to select the PWM peripheral.
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*
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* Output : None
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* Return : None
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*******************************************************************************/
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extern void PWM_Start(UINT8 PWMx);
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/*******************************************************************************
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* Function Name : PWM_Stop
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* Description : PWM关闭
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* Input : - PWMx : PWM channel；where x can be 0, 1, 2, 3 to select the PWM peripheral.
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*
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* Output : None
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* Return : None
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*******************************************************************************/
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extern void PWM_Stop(UINT8 PWMx);
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/*******************************************************************************
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* Function Name : PWM_ConfigGpio
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* Description : PWM配置成GPIO用途
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* Input : - PWMx: PWM channel；where x can be 0, 1, 2 to select the PWM peripheral.
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*
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* - SPI_Dir：设置GPIO方向 GPIO_OUTPUT：输出 GPIO_INPUT：输入
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* - PullUp_En：设置相应的脚上拉使能
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* PWM_PULLUP_EN: enable上拉
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* PWM_PULLUP_DIS: disable上拉
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*
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* Output : None
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* Return : None
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******************************************************************************/
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INT8 PWM_ConfigGpio(UINT8 PWMx, UINT8 GPIO_Dir, UINT8 PullUp_En);
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/*******************************************************************************
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* Function Name : PWM_ReadGpioData
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* Description : 获取PWMx对应引脚的电平
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* Input : - PWMx: PWM channel；where x can be 0, 1, 2 to select the PWM peripheral.
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* - PWM_Port: 0,1,2,3
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*
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* Output : None
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* Return : Bit_SET:高电平 Bit_RESET：低电平 -1：fail
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******************************************************************************/
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INT8 PWM_ReadGpioData(UINT8 PWMx);
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/*******************************************************************************
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* Function Name : PWM_WriteGpioData
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* Description : 设置PWMx对应引脚的电平
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* Input : - PWMx: PWM channel；where x can be 0, 1, 2 to select the PWM peripheral.
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* - PWM_Port: 0,1,2,3
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* - bitVal：设置的电平，Bit_SET：设置为高电平 Bit_RESET：设置为低电平
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*
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* Output : None
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* Return : 0: 设置成功 other：设置失败
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******************************************************************************/
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INT8 PWM_WriteGpioData(UINT8 PWMx, UINT8 bitVal);
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#endif /* PWM_DRV_H_ */
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