#include?
#include?“TM1628.h“
typedef?unsigned?char?????uint8_t;
typedef?unsigned?short????uint16_t;
typedef?unsigned?long?????uint32_t;
typedef?uint32_t??u32;
typedef?uint16_t?u16;
typedef?uint8_t??u8;

#define?loadbitmask?0x04
#define?GPIOA_baseAddress???????0x5000
#define?GPIOB_baseAddress???????0x5005
#define?GPIOF_baseAddress???????0x5019
#define?PA3_stouchbit???0
#define?PF4_stouchbit???1
#define?PB7_stouchbit???2
#define?PB6_stouchbit???3
typedef?struct?GPIO_struct
{
??volatile?uint8_t?ODR;?/*!??volatile?uint8_t?IDR;?/*!??volatile?uint8_t?DDR;?/*!??volatile?uint8_t?CR1;?/*!??volatile?uint8_t?CR2;?/*!}
GPIO_TypeDef;
GPIO_TypeDef?*PORT_ADDR;??/**se?adress?of?the?GPIO?（DR?address）?*/



void?Clk_Config（void）
{
????CLK_CKDIVR_CPUDIV?=?0;?????????????????//系統(tǒng)時(shí)鐘1分頻
????while（!（CLK_ICKR?&?0x02））;?????????//等待HSI準(zhǔn)備好
}
void?delay（u16?n）??????????
{
????u16?ij;
????while（n?--）
????{
??????for（i?=?0;i?????????for（j?=?0;j?????????????
??????
????}
}?
void?Io_Config（void）
{
????PA_DDR?|=?0x0C;?????????????????????
????PA_CR1?|=?0x0C;?????????????????????????
????PA_ODR?|=?0x0C;??
????PB_DDR?|=?0xC0;?????????????????????
????PB_CR1?|=?0xC0;?????????????????????????
????PB_ODR?|=?0xC0;
????PF_DDR?|=?0x10;?????????????????????
????PF_CR1?|=?0x10;?????????????????????????
????PF_ODR?|=?0x10;
????PD_DDR?|=?0x10;
????PD_CR1?|=?0x10;
}
void?Tim2_Config（void）
{
????TIM2_PSCR?=?0;		????????//16分頻得到8MHZ的定時(shí)器時(shí)鐘定時(shí)器加1就是0.125us
????TIM2_ARRH?=?0xff;	????????//20ms更新一次
????TIM2_ARRL?=?0xff;
???//?TIM2_IER_UIE?=?1;	????????//更新中斷使能	?
????TIM2_CR1_ARPE?=?1;	????????//預(yù)裝載使能
????TIM2_CR1_CEN=1;???
}
int?touch_acqusition（int?touch_io）
{
????u16?measure_time=0measure_count=0;
????u8?stouchbitmask;
????switch（touch_io）
????{
????????case?PA3_stouchbit:
??????????PORT_ADDR?=?（GPIO_TypeDef?*）（GPIOA_baseAddress）;
??????????stouchbitmask=0x08;
??????????break;????????
????????case?PF4_stouchbit:
??????????PORT_ADDR?=?（GPIO_TypeDef?*）（GPIOF_baseAddress）;
??????????stouchbitmask=0x10;
??????????break;
????????case?PB7_stouchbit:
??????????PORT_ADDR?=?（GPIO_TypeDef?*）（GPIOB_baseAddress）;
??????????stouchbitmask=0x80;
??????????break;
????????case?PB6_stouchbit:
??????????PORT_ADDR?=?（GPIO_TypeDef?*）（GPIOB_baseAddress）;
??????????stouchbitmask=0x40;
??????????break;
????}
????do
????{
??????????
????????PORT_ADDR->ODR?&=?~stouchbitmask;??????????????//CAP_CHx?pin?is?set?in?output?mode?at?Vss
????????PORT_ADDR->DDR?|=?stouchbitmask;
????????PORT_ADDR->CR1?&=?~stouchbitmask;
????????PA_ODR?|=?loadbitmask;????????????????//Load?pin?is?set?in?output?mode?at?Vdd
????????TIM2_CNTRH=0X00;
????????TIM2_CNTRL=0X00;????????????//保存定時(shí)器計(jì)數(shù)器的初始值（vih_start）
??