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本帖最后由 inkfish321 于 2013-7-12 21:53 编辑
目前我在移植一个程序到nano130 上面。 原先在STM32L152上面跑整个程序每500mS唤醒一次刷新显示才30uA左右,而每秒唤醒30次执行的时候也才130uA左右。现在我移植过来后功耗降不下来怎么解决??
程序一开始的时候我关闭外部晶振,并关闭有所外设时钟
void SysInit_Clock(void)
{
uint32_t delayCnt;
UNLOCKREG();
CLK->PWRCTL = CLK->PWRCTL | CLK_PWRCTL_HIRC_EN | CLK_PWRCTL_LXT_EN | CLK_PWRCTL_LIRC_EN;
for (delayCnt=0; delayCnt<100000; delayCnt++)
if (CLK->CLKSTATUS & CLK_CLKSTATUS_HIRC_STB) break;
CLK->CLKDIV0 = CLK->CLKDIV0 & (~CLK_CLKDIV0_HCLK_MASK) | HCLK_CLK_DIVIDER(3); /* divider is 0 */
CLK->CLKSEL0 = (CLK->CLKSEL0 & ~CLK_CLKSEL0_HCLK_MASK) | CLK_CLKSEL0_HCLK_HIRC; /* HCLK = 12MHz */
CLK->PWRCTL = CLK_PWRCTL_DELY_EN | CLK_PWRCTL_HIRC_EN | CLK_PWRCTL_LXT_EN | CLK_PWRCTL_LIRC_EN;
//
CLK->AHBCLK = CLK_AHBCLK_ISP_EN | CLK_AHBCLK_SRAM_EN | CLK_AHBCLK_GPIO_EN;
CLK->APBCLK = CLK_APBCLK_RTC_EN | CLK_APBCLK_WDT_EN;
CLK->PLLCTL = CLK_PLLCTL_PLLSRC_HIRC | CLK_PLLCTL_PD;
/*
GCR->IPRST_CTL1 = GCR_IPRSTCTL1_DMA | GCR_IPRSTCTL1_EBI;
GCR->IPRST_CTL2 = 0xffffffff;
delay_us(2);
GCR->IPRST_CTL2 = 0x00000000;
*/
LOCKREG();
/* Update CPU Clock Frequency */
SystemCoreClockUpdate();
}
初始化DEBUG串口
void SysInit_DebugConsole()
{
GCR->PA_L_MFP = ((GCR->PA_L_MFP & ~PA3_MFP_MASK) | PA3_MFP_UART1_TX);
CLK->APBCLK |= CLK_APBCLK_UART1_EN;
CLK->CLKDIV0 &= ~CLK_CLKDIV0_UART_MASK;
CLK->CLKSEL1 = (CLK->CLKSEL1 & ~CLK_CLKSEL1_UART_MASK) | CLK_CLKSEL1_UART_HIRC;
UART1->BAUD = 0x67; //Baud Rate:115200 OSC:12MHz
UART1->TLCTL = 0x03; // Character len is 8 bits
}
跳到main 函数后我将所有IO口设置成输入上拉。然后实始化RTC唤醒
#include <stdio.h>
#include <stdint.h>
#include "nano1xx.h"
#include "nano1xx_gpio.h"
#include "nano1xx_rtc.h"
#include "main.h"
void InitAllPin(void)
{
GPIOA->PMD = 0x0000;
GPIOB->PMD = 0x0000;
GPIOC->PMD = 0x0000;
GPIOD->PMD = 0x0000;
GPIOE->PMD = 0x0000;
GPIOF->PMD = 0x0000;
GCR->PA_L_MFP = PA3_MFP_UART1_TX;
GCR->PA_H_MFP = 0;
GCR->PB_L_MFP = 0;
GCR->PB_H_MFP = 0;
GCR->PC_L_MFP = 0;
GCR->PC_H_MFP = 0;
GCR->PD_L_MFP = 0;
GCR->PD_H_MFP = 0;
GCR->PE_L_MFP = 0;
GCR->PE_H_MFP = 0;
#ifdef __SWD_DEBUG
#else
GCR->PF_L_MFP = 0x00007700;
#endif
GPIOA->PUEN = 0xFFFF;
GPIOB->PUEN = 0xFFFF;
GPIOC->PUEN = 0xFFFF;
GPIOD->PUEN = 0xFFFF;
GPIOE->PUEN = 0xFFFF;
#ifdef __SWD_DEBUG
#else
GPIOF->PUEN = 0x0033;
#endif
}
void PowerDown(void)
{
while(!(UART1->FSR & UART_FSR_TE_F));
UNLOCKREG();
CLK->PWRCTL |= (CLK_PWRCTL_PWRDOWN_EN | CLK_PWRCTL_DELY_EN | CLK_PWRCTL_WAKEINT_EN | CLK_PWRCTL_LXT_EN);
SCB->SCR |= 0x04;
NVIC_EnableIRQ(PDWU_IRQn);
//SYS_SetUpPowerDown(1);
LOCKREG();
__WFI();
}
void SetRtcWakeupPeriod(uint16_t period)
{
uint8_t i=0;
uint16_t tickPeriodH;
uint16_t tickPeriodL;
for(i=0; i<8; i++)
{
tickPeriodH = 1000 / (1<<i);
tickPeriodL = 1000/ (1<<(i+1));
if((tickPeriodH >= period) && (period > tickPeriodL))
{
break;
}
}
if(i>=8)
return;
RTC_WriteEnable();
/* Set Tick setting */
i = RTC_TTR_TWKE | (i&RTC_TTR_TTR);
do{
RTC->TTR = i;
if(i != RTC->TTR)
{
TRACE_ERROR1("Write RTC-TTR faile");
}
}while(i != RTC->TTR);
//TRACE_INFO2("RTC->TTR = %d", RTC->TTR);
/* Enable RTC Tick Interrupt */
RTC_EnableInt(RTC_RIER_TIER);
}
int main(void)
{
RTC_Init();
RTC_WriteEnable();
RTC->TSSR |= RTC_TSSR_24hr;Url
InitAllPin();
SetRtcWakeupPeriod(30);
while(1)
{
TRACE_INFO1("POWER DOWN");
PowerDown();
TRACE_INFO1("WAKE UP");
}
}
当SetRtcWakeupPeriod(30);设置为30mS的时候电流4~500uA....
当SetRtcWakeupPeriod(500);设置为500mS的时候电流100多uA....
附件是我的测试例子。。。
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