J4M6-Motion light

Used a microwave motion sensor hooked to pin and interrupt to determine how long light stays on.

Intuitive Motion light that as it detects motion, expands the time the light is on. When it gets down to 60 seconds, it warns you and it does very brief flashes to let you know how many sets of 10 seconds are left. Each motion it detects expands its time on by 30 seconds. for a max number that is set. This is set for max 40 minutes.

/* Motion Light for office desk 8MHz clock with Standby (10uA) Rebuild project all configuration
Works but YOU MUST do a Project "Rebuild all project configuration"             J4M6             ____ PD6/A6 - 1| |8 PD1/SWIO VSS - 2| |7 PC4/A2 PA2 - 3| |6 PC2/SCL VDD + 4| |5 PC1/SDA             ---- PA2 - input/Pulled high - to button PC1 - output
After hard reset, got down to 9.75uA :) */

#include "debug.h"#define MAXCount ((10*6)*4) //40min
//for motion:volatile u16 count=0;

void GPIOConfig(){    GPIO_InitTypeDef GPIO_InitStructure = {0};
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE);    RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All; //Apply the settings on all pins under the selected port    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //Internal pull-up -> Contributes to power saving    GPIO_Init(GPIOA, &GPIO_InitStructure);    GPIO_Init(GPIOC, &GPIO_InitStructure);    GPIO_Init(GPIOD, &GPIO_InitStructure);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; //PC1 - LED pin    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //Push-pull ("toggleable") configuration    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; //Lowest speed    GPIO_Init(GPIOC, &GPIO_InitStructure);}
void EXTI2_INT_INIT(void){    EXTI_InitTypeDef EXTI_InitStructure = {0};    NVIC_InitTypeDef NVIC_InitStructure = {0};
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA, ENABLE);
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource2); //PA2    EXTI_InitStructure.EXTI_Line = EXTI_Line2; //PA2    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; //Since the pin is configured as IPU, it should be pulled down by the button    EXTI_InitStructure.EXTI_LineCmd = ENABLE;    EXTI_Init(&EXTI_InitStructure);
    NVIC_InitStructure.NVIC_IRQChannel = EXTI7_0_IRQn; //Combined interrupt handler for GPIO pins (interrupt lines) 0-7    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //Highest interrupt priority (among competing interrupts)    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; //Second highest sub-priority (among competing interrupts)    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;    NVIC_Init(&NVIC_InitStructure);}
void EXTI9_INT_INIT(void){    EXTI_InitTypeDef EXTI_InitStructure = {0};
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
    EXTI_InitStructure.EXTI_Line = EXTI_Line9; //Internal line, see reference manual 2.3.4 (AWU)    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Event;    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;    EXTI_InitStructure.EXTI_LineCmd = ENABLE;    EXTI_Init(&EXTI_InitStructure);}
void standbyConfig(){    RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);    RCC_LSICmd(ENABLE); //128 kHz internal oscillator    while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET); //Wait until the oscillator becomes ready    PWR_AWU_SetPrescaler(PWR_AWU_Prescaler_61440); //128 kHz -> 1/128kHz/61400 = 480 ms    PWR_AWU_SetWindowValue(24); //+1 is added by the code later. 25 * 480 = 12 s -> expected sleep time    PWR_AutoWakeUpCmd(ENABLE); //Enable the auto-wakeup feature}

int main(void){    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);    SystemCoreClockUpdate();    Delay_Init();    GPIOConfig(); //Configure the GPIOs -> All IPUs + 1 GPIO for the LED    for(u8 i=0;i<6;i++){        GPIO_WriteBit(GPIOC, GPIO_Pin_1, Bit_SET);         Delay_Ms(50);         GPIO_WriteBit(GPIOC, GPIO_Pin_1, Bit_RESET);         Delay_Ms(50);    }
    GPIO_WriteBit(GPIOC, GPIO_Pin_1, Bit_SET); //Turn the LED on    Delay_Ms(5000); //Wait for 5 seconds so you have time to reprogram the microcontroller before it goes asleep    GPIO_WriteBit(GPIOC, GPIO_Pin_1, Bit_RESET); //Turn the LED off
    EXTI2_INT_INIT(); //Button interrupt for wake up // EXTI9_INT_INIT(); //Internal wake-up triggered by AWU //commented 11/19 still worked for button
    //standbyConfig(); //Auto wakeup (LSI), if disabled, EXTI9_INT_INIT() can be disabled, too.
    while(1)    {        if(count<=6){            for(u16 i=0;i<=count;i++){                GPIO_WriteBit(GPIOC, GPIO_Pin_1, Bit_SET);                 Delay_Ms(200);                 GPIO_WriteBit(GPIOC, GPIO_Pin_1, Bit_RESET);                Delay_Ms(70);            }        }         //Delay_Ms(20);        GPIO_WriteBit(GPIOC, GPIO_Pin_1, Bit_SET);         Delay_Ms(10000); //Wait 3 seconds        GPIO_WriteBit(GPIOC, GPIO_Pin_1, Bit_RESET);         //__WFI(); //Go to sleep (600 uA)        //added if and count for motion:        if(count<=0){            PWR_EnterSTANDBYMode(PWR_STANDBYEntry_WFE); //Go to standby (9-10 uA)        }        count--;         }}
void EXTI7_0_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast"))); //Interrupt handler for the button
void EXTI7_0_IRQHandler(void){    if(EXTI_GetITStatus(EXTI_Line2) != RESET) //Check the interrupt bit    {        EXTI_ClearITPendingBit(EXTI_Line2); //Reset, so the MCU can receive another interrupt    }    //added for motion    if(count<MAXCount){        count+=3;    }    }

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