Goal: It starts after a certain period of time and blinks the LED. Reset with a switch.
Hi,
I have to take medicine every morning because I had been over weight for years. However, as I get used to taking medicine every day, I sometime forget to take it. In order to prevent this, I am thinking of programming to make it known by lighting the LED at a certain fixed time. I studied the Deep Sleep function to make it battery-powered and have a long life. I will introduce the program created at that time. This program will be the minimum template that can realize what I want to do. Maybe....
The environment used is as follows:
・PSoC Creator 4.4
・CY8CKIT-042-BLE-A
Program behavior:
After Power On, it does not start up immediately, but after a certain period of time, it starts up and turns on the LED. The LED counts the blinking of the blue LED and changes to red after blinking 4 times. Reset with SW and repeat the same operation.
In my case, I usually take the medicine once a day. If you can adjust the WDT to reset after drinking, the blue LED flashes after 23 hours, the red LED flashes after another hour, and a warning is issued as a two-step alarm, the desired program is completed. This sample program If you set this, it will be a wait-and-see for one day, so I have not set it and confirmed the feasibility in a short time.
After Power On or reset release, enter Deep Sleep after initial setting. The first WDT setting is to cascade WDT0-1-2 and wake up the CPU with a WDT2 interrupt (path ①). The WDT2 interrupt changes to a cascade of WDT0-1 only (path ②). WDT1 interrupt creates LED blinking timing. It is set so that Software can be reset by GPIO interrupt of SW.
The circuit is simply the setting of the SW/GPIO and LED part as shown below.
Pin map for CY8CKIT-042-BLE-A is as below.
The clock source of WDT is set on the program.
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#include "project.h"
#define LED_ON (0u) #define LED_OFF (1u) #define LED_ON_TIME (100u)
#include "project.h"
volatile int Cnt = 0; void wdt1Callback() { Cnt++; CySysWdtClearInterrupt(CY_SYS_WDT_COUNTER1); }
/* Enable modification of the WDT Timers for LED twinkle */ void wdt2Callback() { // Turn off the WDTs (all three of them) CySysWdtDisable(CY_SYS_WDT_COUNTER0_MASK); CySysWdtDisable(CY_SYS_WDT_COUNTER1_MASK); CySysWdtDisable(CY_SYS_WDT_COUNTER2_MASK);
// Make Timer 0 & 1 run with no interrupt, and 2 cause an interrupt CySysWdtSetMode(CY_SYS_WDT_COUNTER0,CY_SYS_WDT_MODE_NONE); CySysWdtSetMode(CY_SYS_WDT_COUNTER1,CY_SYS_WDT_MODE_INT); CySysWdtSetMode(CY_SYS_WDT_COUNTER2,CY_SYS_WDT_MODE_NONE);
CySysWdtSetCascade(CY_SYS_WDT_CASCADE_01 ); // Cascade 0-1, not to use WDT2 CySysWdtEnable(CY_SYS_WDT_COUNTER0_MASK | CY_SYS_WDT_COUNTER1_MASK);
CySysWdtClearInterrupt(CY_SYS_WDT_COUNTER2); }
CY_ISR(GPIOIsrHandler) { /*Software Reset */ // CySoftwareReset(void); CY_SYS_AIRCR_REG = (CY_SYS_AIRCR_REG & (uint32)(~CY_SYS_AIRCR_VECTKEY_MASK)) | CY_SYS_AIRCR_VECTKEY | CY_SYS_AIRCR_SYSRESETREQ; }
int main(void) { CySysWdtSetInterruptCallback(CY_SYS_WDT_COUNTER1,wdt1Callback); CySysWdtSetInterruptCallback(CY_SYS_WDT_COUNTER2,wdt2Callback);
// SW_int_StartEx(SW_isr) ; isr_GPIO_StartEx(GPIOIsrHandler);
CySysWdtUnlock(); // Enable modification of the WDT Timers
// Turn off the WDTs (all three of them) CySysWdtDisable(CY_SYS_WDT_COUNTER0_MASK); CySysWdtDisable(CY_SYS_WDT_COUNTER1_MASK); CySysWdtDisable(CY_SYS_WDT_COUNTER2_MASK);
// Make Timer 0 & 1 run with no interrupt, and 2 cause an interrupt CySysWdtSetMode(CY_SYS_WDT_COUNTER0,CY_SYS_WDT_MODE_NONE); CySysWdtSetMode(CY_SYS_WDT_COUNTER1,CY_SYS_WDT_MODE_NONE); CySysWdtSetMode(CY_SYS_WDT_COUNTER2,CY_SYS_WDT_MODE_INT);
// Set the time to 32KHz/(128*64*2^4) = 0.244 Hz = 4.1S CySysWdtSetMatch(CY_SYS_WDT_COUNTER0, 128); CySysWdtSetMatch(CY_SYS_WDT_COUNTER1, 64 ); CySysWdtSetToggleBit(4);
CySysWdtSetClearOnMatch(CY_SYS_WDT_COUNTER0,1); // When counter this period reset counter CySysWdtSetClearOnMatch(CY_SYS_WDT_COUNTER1,1);
CySysWdtSetCascade(CY_SYS_WDT_CASCADE_01 | CY_SYS_WDT_CASCADE_12); // Cascade 0-1-2 CySysWdtEnable(CY_SYS_WDT_COUNTER0_MASK | CY_SYS_WDT_COUNTER1_MASK | CY_SYS_WDT_COUNTER2_MASK );
LED_B_Write(LED_OFF); //LED OFF LED_R_Write(LED_OFF); //LED OFF
CyGlobalIntEnable; /* Enable global interrupts. */
for(;;) { CySysPmDeepSleep();
if(Cnt<4){ LED_B_Write(LED_ON); //LED ON CyDelay(LED_ON_TIME); LED_B_Write(LED_OFF); //LED OFF }else{ LED_R_Write(LED_ON); //LED ON CyDelay(LED_ON_TIME); LED_R_Write(LED_OFF); //LED OFF } } } |
Thanks,
Kenshow
