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