NV32F100引脚图与功能及用户手册下载附GPIO驱动程序

ID:252277 · 发表于 2018-3-7 13:03

这个是NV32F100的pdf格式中文资料：

NV32F100引脚图：

NV32F100管脚功能配置：

注：1.该器件不支持片上下拉；SWD_CLK引脚仅支持有 PE0控制的上拉，完全支持 SWD协议需要外部下拉电阻。

注释： 1. 做输出管脚时为大电流管脚 2. 做输出管脚时为开漏状态 3. VSSA和 VSS芯片内部是连接的
4. VERFH和 VDDA芯片内部是连接的 5. TSSOP20无外置晶振封装形式，编号 NV32F100xT20B(x=D,E,F)
6. PA4,PA5,PB4,PC4复位后，默认功能不是 GPIO，如用 GPIO功能需配置相关寄存器[/url]NV32F100单片机GPIO驱动源程序如下:

/******************************************************************************
*
* @brief provide systick utility routines.
*
*******************************************************************************/
#include "common.h"
#include "systick.h"
//#include "stdint.h"
uint32_t cnt_start_value;
uint32_t cnt_end_value;
uint32_t overhead;
SysTick_CallbackType SysTick_Callback[1] = {NULL};
static volatile uint32_t mTicks = 0;
#if 0
__IO uint32_t CTRL; /*!< Offset: 0x000 (R/W) SysTick Control and Status Register */
__IO uint32_t LOAD; /*!< Offset: 0x004 (R/W) SysTick Reload Value Register */
__IO uint32_t VAL; /*!< Offset: 0x008 (R/W) SysTick Current Value Register */
__I uint32_t CALIB; /*!< Offset: 0x00C (R/ ) SysTick Calibration Register */
#endif
void systick_init(void)
{
SysTick->VAL = 0x0; /* clear current ETMer value */
SysTick->LOAD = 0x00FFFFFF;
SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_ENABLE_Msk;
}
void SysTick_SetCallBack(SysTick_CallbackType pSysTick_CallBack)
{
SysTick_Callback[0] = pSysTick_CallBack;
}
void delay_us(uint32_t us)
{
SysTick->CTRL =0;
SysTick->LOAD = ((BUS_CLK_HZ/1000000)/16)*us;
SysTick->VAL = 0;
NVIC_SetPriority (SysTick_IRQn, (1<<__NVIC_PRIO_BITS) - 1);
SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk | SysTick_CTRL_TICKINT_Msk;
SysTick_SetCallBack(SysTick_CallBack);
while(!mTicks);
mTicks = 0;
SysTick->CTRL =0; //1Ø¶¨ê±Æ÷1ØÖD¶Ï
}
void delay_ms(uint32_t mstime)
{
delay_us(mstime*1000);
}
/****************************************************************************//*!
*
* @brief SystickÖD¶Ï·tÎñ×óoˉêy
*
*****************************************************************************/
void SysTick_CallBack(void)
{
mTicks++;
}
void systick_disable(void)
{
SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
}
void cal_systick_read_overhead(void)
{
uint32_t cnt_start_value;
uint32_t cnt_end_value;
cnt_start_value = SysTick->VAL;
cnt_end_value = SysTick->VAL;
overhead = cnt_start_value - cnt_end_value;
#ifdef DEBUG_PRINT
printf("systick start value: 0x%x\n\r", (unsigned int)cnt_start_value);
printf("systick end value: 0x%x\n\r", (unsigned int) cnt_end_value);
printf("systick current value read overhead: 0x%x\n\r", (unsigned int)overhead);
#endif
}
void SysTick_Isr(void)
{
if( SysTick_Callback[0] )
{
SysTick_Callback[0]();
}
}