rt-thread/bsp/swm320/libraries/SWM320_StdPeriph_Driver/SWM320_port.c

/****************************************************************************************************************************************** 
* 文件名称: SWM320_port.c
* 功能说明:	SWM320单片机的端口引脚功能选择库函数
* 技术支持:	http://www.synwit.com.cn/e/tool/gbook/?bid=1
* 注意事项:
* 版本日期: V1.1.0		2017年10月25日
* 升级记录: 
*
*
*******************************************************************************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION 
* REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, SYNWIT SHALL NOT BE HELD LIABLE 
* FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT 
* OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONN-
* -ECTION WITH THEIR PRODUCTS.
*
* COPYRIGHT 2012 Synwit Technology 
*******************************************************************************************************************************************/
#include "SWM320.h"
#include "SWM320_port.h"


/****************************************************************************************************************************************** 
* 函数名称: PORT_Init()
* 功能说明:	端口引脚功能选择，可用的功能见"SWM320_port.h"文件
* 输    入: uint32_t PORTx	   		指定PORT端口，有效值包括PORTA、PORTB、PORTC、PORTM、PORTN、PORTP
*			uint32_t n		   		指定PORT引脚，有效值包括PIN0、PIN1、PIN2、... ... PIN22、PIN23
*			uint32_t func	   		指定端口引脚要设定的功能，其可取值见"SWM320_port.h"文件
*			uint32_t digit_in_en   	数字输入使能
* 输    出: 无
* 注意事项: 当引脚标号n为偶数时，func取值只能是FUNMUX0开头的，如FUNMUX0_UART0_RXD
*			当引脚标号n为奇数时，func取值只能是FUNMUX1开头的，如FUNMUX1_UART0_TXD
******************************************************************************************************************************************/
void PORT_Init(uint32_t PORTx, uint32_t n, uint32_t func, uint32_t digit_in_en)
{
	switch((uint32_t)PORTx)
	{
		case ((uint32_t)PORTA):
			if(func > 99)
			{
				if(n < PIN6)
				{
					PORT->PORTA_MUX0 &= ~(0x1F << (n*5));
					PORT->PORTA_MUX0 |= (func-100) << (n*5);
				}
				else if(n < PIN12)
				{
					PORT->PORTA_MUX1 &= ~(0x1F << ((n-6)*5));
					PORT->PORTA_MUX1 |= (func-100) << ((n-6)*5);
				}
			}
			
			PORT->PORTA_SEL &= ~(0x03 << (n*2));
			PORT->PORTA_SEL |= (func > 99 ? 1 : func) << (n*2);
			
			PORT->PORTA_INEN &= ~(0x01 << n);
			PORT->PORTA_INEN |= (digit_in_en << n);
			break;
			
		case ((uint32_t)PORTB):
			if(func > 99)
			{
				if(n < PIN6)
				{
					PORT->PORTB_MUX0 &= ~(0x1F << (n*5));
					PORT->PORTB_MUX0 |= (func-100) << (n*5);
				}
				else if(n < PIN12)
				{
					PORT->PORTB_MUX1 &= ~(0x1F << ((n-6)*5));
					PORT->PORTB_MUX1 |= (func-100) << ((n-6)*5);
				}
			}
			
			PORT->PORTB_SEL &= ~(0x03 << (n*2));
			PORT->PORTB_SEL |= (func > 99 ? 1 : func) << (n*2);
			
			PORT->PORTB_INEN &= ~(0x01 << n);
			PORT->PORTB_INEN |= (digit_in_en << n);
			break;
		
		case ((uint32_t)PORTC):
			if(func > 99)
			{
				if(n < PIN6)
				{
					PORT->PORTC_MUX0 &= ~(0x1F << (n*5));
					PORT->PORTC_MUX0 |= (func-100) << (n*5);
				}
				else if(n < PIN12)
				{
					PORT->PORTC_MUX1 &= ~(0x1F << ((n-6)*5));
					PORT->PORTC_MUX1 |= (func-100) << ((n-6)*5);
				}
			}
			
			PORT->PORTC_SEL &= ~(0x03 << (n*2));
			PORT->PORTC_SEL |= (func > 99 ? 1 : func) << (n*2);
			
			PORT->PORTC_INEN &= ~(0x01 << n);
			PORT->PORTC_INEN |= (digit_in_en << n);
			break;
		
		case ((uint32_t)PORTM):
			if(func > 99)
			{
				if(n < PIN6)
				{
					PORT->PORTM_MUX0 &= ~(0x1F << (n*5));
					PORT->PORTM_MUX0 |= (func-100) << (n*5);
				}
				else if(n < PIN12)
				{
					PORT->PORTM_MUX1 &= ~(0x1F << ((n-6)*5));
					PORT->PORTM_MUX1 |= (func-100) << ((n-6)*5);
				}
				else if(n < PIN18)
				{
					PORT->PORTM_MUX2 &= ~(0x1F << ((n-12)*5));
					PORT->PORTM_MUX2 |= (func-100) << ((n-12)*5);
				}
				else if(n < PIN24)
				{
					PORT->PORTM_MUX3 &= ~(0x1F << ((n-18)*5));
					PORT->PORTM_MUX3 |= (func-100) << ((n-18)*5);
				}
			}
			
			if(n < 16)
			{
				PORT->PORTM_SEL0 &= ~(0x03 << (n*2));
				PORT->PORTM_SEL0 |= (func > 99 ? 1 : func) << (n*2);
			}
			else
			{
				PORT->PORTM_SEL1 &= ~(0x03 << ((n-16)*2));
				PORT->PORTM_SEL1 |= (func > 99 ? 1 : func) << ((n-16)*2);
			}
			
			PORT->PORTM_INEN &= ~(0x01 << n);
			PORT->PORTM_INEN |= (digit_in_en << n);
			break;
		
		case ((uint32_t)PORTN):
			if(func > 99)
			{
				if(n < PIN6)
				{
					PORT->PORTN_MUX0 &= ~(0x1F << (n*5));
					PORT->PORTN_MUX0 |= (func-100) << (n*5);
				}
				else if(n < PIN12)
				{
					PORT->PORTN_MUX1 &= ~(0x1F << ((n-6)*5));
					PORT->PORTN_MUX1 |= (func-100) << ((n-6)*5);
				}
				else if(n < PIN18)
				{
					PORT->PORTN_MUX2 &= ~(0x1F << ((n-12)*5));
					PORT->PORTN_MUX2 |= (func-100) << ((n-12)*5);
				}
			}
			
			if(n < 16)
			{
				PORT->PORTN_SEL0 &= ~(0x03 << (n*2));
				PORT->PORTN_SEL0 |= (func > 99 ? 1 : func) << (n*2);
			}
			else
			{
				PORT->PORTN_SEL1 &= ~(0x03 << ((n-16)*2));
				PORT->PORTN_SEL1 |= (func > 99 ? 1 : func) << ((n-16)*2);
			}
			
			PORT->PORTN_INEN &= ~(0x01 << n);
			PORT->PORTN_INEN |= (digit_in_en << n);
			break;
			
		case ((uint32_t)PORTP):
			if(func > 99)
			{
				if(n < PIN6)
				{
					PORT->PORTP_MUX0 &= ~(0x1F << (n*5));
					PORT->PORTP_MUX0 |= (func-100) << (n*5);
				}
				else if(n < PIN12)
				{
					PORT->PORTP_MUX1 &= ~(0x1F << ((n-6)*5));
					PORT->PORTP_MUX1 |= (func-100) << ((n-6)*5);
				}
				else if(n < PIN18)
				{
					PORT->PORTP_MUX2 &= ~(0x1F << ((n-12)*5));
					PORT->PORTP_MUX2 |= (func-100) << ((n-12)*5);
				}
				else if(n < PIN24)
				{
					PORT->PORTP_MUX3 &= ~(0x1F << ((n-18)*5));
					PORT->PORTP_MUX3 |= (func-100) << ((n-18)*5);
				}
			}
			
			if(n < 16)
			{
				PORT->PORTP_SEL0 &= ~(0x03 << (n*2));
				PORT->PORTP_SEL0 |= (func > 99 ? 1 : func) << (n*2);
			}
			else
			{
				PORT->PORTP_SEL1 &= ~(0x03 << ((n-16)*2));
				PORT->PORTP_SEL1 |= (func > 99 ? 1 : func) << ((n-16)*2);
			}
			
			PORT->PORTP_INEN &= ~(0x01 << n);
			PORT->PORTP_INEN |= (digit_in_en << n);
			break;
	}
}