Hello all,
I'm working on controlling LED with NEC remote control and Capsense(Using custom PCB with PSoC4 MCU cy8c4245axi-483). My Project which I have attached here is work fine with either through remote or Capsense button. As Problem is different from previous one, I have already opened thread regarding this issue. but problem has not been solved .https://community.cypress.com/t5/PSoC-4-MCU/IR-interfacing-with-Capsense-Button/m-p/273105/emcs_t/S2... .
Please Note that I wanted to operate LED by both the ways. Here I am attaching my Project(in which it is working only with CapSense)
#include "project.h"
#include "stdio.h"
#define TIMER_FREQUENCY 1000000UL
#define ADDRESS_SIZE 16U
#define DATA_SIZE 16U
volatile uint16_t timeStart;
volatile uint16_t timeEnd;
uint32_t pulseWidth;
volatile uint16_t pulseReceived;
volatile uint16_t overflow;
uint32_t timeDiff;
/******************************/
uint8_t startFrameFlag = 0;
uint8_t addressCount = 0;
uint8_t dataCount = 0;
uint16_t address_temp;
uint8_t address_temp2;
uint8_t address;
uint8_t address_inv;
uint16_t data_temp;
uint8_t data;
uint8_t data_inv;
uint8_t frameReceived;
unsigned char status=0;
unsigned char prev_status=0;
unsigned char flag[10];
/*****************************/
typedef enum
{
IDLE,
ADDRESS_FRAME,
DATA_FRAME,
}state;
state nec_state;
volatile uint16_t countFlag;
uint16_t timerPeriod;
asm (".global _printf_float");
int _write(int file, char *ptr, int len)
{
(void) file;
int i;
for (i = 0; i < len; i++)
{
UART_UartPutChar(*ptr++);
}
return(len);
}
void Pin_ISR();
void Timer_ISR();
void DecodeProcotol(uint16_t pulseWidth);
CY_ISR(Pin_ISR)
{
uint8 intrSrc;
intrsrc=NEC_IN_ClearInterrupt();
if(intrSrc != 0u)
{
if(countFlag == 0)
{
timeStart = Timer_ReadCounter();
countFlag = 1;
}
else
{
timeEnd = Timer_ReadCounter();
pulseReceived = 1;
}
}
}
CY_ISR(Timer_ISR)
{
if((Timer_GetInterruptSourceMasked() & Timer_INTR_MASK_TC ) != 0)
{
if(countFlag != 0)
overflow++;
Timer_ClearInterrupt(Timer_INTR_MASK_TC);
}
}
void DecodeProcotol(uint16_t pulseWidth)
{
uint8_t bit = 0;
switch(nec_state)
{
case IDLE://Checks for start of frame
{
if(pulseWidth > 12000 && pulseWidth < 15000)
{
nec_state = ADDRESS_FRAME;
startFrameFlag = 1;
}
else
{
//Invalid Frame received
nec_state = IDLE;
}
break;
}
case ADDRESS_FRAME:
{
if(pulseWidth > 1100 && pulseWidth < 1160)
{
bit = 0;
}
else if(pulseWidth > 2200 && pulseWidth < 2300)
{
bit = 1;
}
address_temp |= ( bit << addressCount);
addressCount++;
if(addressCount >= ADDRESS_SIZE)
{
addressCount = 0;
nec_state = DATA_FRAME;
}
break;
}
case DATA_FRAME:
{
if(pulseWidth > 1100 && pulseWidth < 1160)
{
bit = 0;
}
else if(pulseWidth > 2200 && pulseWidth < 2300)
{
bit = 1;
}
data_temp |= ( bit << dataCount);
dataCount++;
if(dataCount >= DATA_SIZE)
{
dataCount = 0;
nec_state = IDLE;
frameReceived = 1;
}
break;
}
}
}
int main(void)
{
CyGlobalIntEnable; /* Enable global interrupts. */
CapSense_Start();
CapSense_InitializeAllBaselines();
CapSense_ProcessAllWidgets();
CapSense_ScanAllWidgets();
Pin_Interrupt_StartEx(Pin_ISR);
Timer_Interrupt_StartEx(Timer_ISR);
UART_Start();
UART_UartPutString("Working\r\n");
nec_state = IDLE;
Timer_Start();
timerPeriod = Timer_ReadPeriod();
/* Place your initialization/startup code here (e.g. MyInst_Start()) */
for(;;)
{
countFlag = 0;
timeEnd = 0;
timeStart = 0;
frameReceived = 0;
address_temp = 0;
data_temp = 0;
address_inv = 0;
address = 0;
data_inv = 0;
if(pulseReceived)
{
if(timeEnd > timeStart)
{
timeDiff = (overflow * timerPeriod) + (timeEnd - timeStart);
}
else
{
timeDiff = (overflow * timerPeriod) - (timeStart - timeEnd);
}
timeStart = timeEnd;
overflow = 0;
pulseReceived = 0;
pulseWidth = timeDiff; //in uS
//printf("%u uS\r\n", pulseWidth);
DecodeProcotol(pulseWidth);
}
if(frameReceived)
{
address_inv = address_temp >> 8;
address = address_temp & 0x00FF;
data_inv = data_temp >> 8;
data = data_temp & 0x00FF;
if((uint8_t)(~data) == data_inv)
{
//printf("Data received: %u\r\n", data_temp);
printf("Data received: %u\r\n", data);
}
else
{
printf("Data corrupted\n\r");
}
}
if (CapSense_NOT_BUSY == CapSense_IsBusy()) {
CapSense_ProcessAllWidgets();
status = CapSense_IsWidgetActive(CapSense_BUTTON08_WDGT_ID) || data==18;
if (status && !prev_status) {
if(flag[8]==0)// && (OF_1_Read()==1))
{flag[8]=1;OF_8_Write(0);
}
else
{flag[8]=0;OF_8_Write(1);
}
}
prev_status = status ;
CapSense_ScanAllWidgets(); }
}
}
. Please Have look. Your suggestions are always helpful for me.
Thanks & Regards,
Prem KB
@MotooTanaka @Hari @Bob_Marlowe @BragadeeshV
