PSoC 5, 3 & 1 MCU

In my application, there is a control interrupt (isr_1) with a period of 200us. The total time spent in the interrupt is approximately 180us. The UART is running at 115200 and the fifo is set to >4 so it uses the UART RX interrupt and the sw ring buffer for storing the data. As soon as I make the UART RX interrupt priority higher (priority 0) than isr_1 (priority 1) the PSoC resets every few seconds with the reset reason being WDT. Do you know what might cause this? 

When the UART interrupt is at a lower priority (priority 7) everything works fine and I read the received data in the main loop. I measured the time spent in the UART interrupt and it about 1us.

We are using the UART with the HW fifo of 4, we find that when disabling interrupts for long time (not for 4 fifo long), we start to loss bytes sometimes (for our opinion the HW fifo not works OK).

Here is our interrupt handler that we used for testing:

CY_ISR(drvUART_A_RxISR)
{
uint8 dataByte, statusByte;
uint16 receivedData;
uAmaxrcv=0;
do{
  receivedData = UART_A_GetByte();
 dataA[k] = receivedData;
  k = (k+1)%BLEN_TEST;
  dataByte = (uint8)(receivedData & 0x00FFu);
  statusByte = (uint8)((receivedData & 0xFF00u) >> 8u);
  if((statusByte & UART_A_RX_STS_FIFO_NOTEMPTY) != 0u){
          if((statusByte & (UART_A_RX_STS_BREAK | UART_A_RX_STS_PAR_ERROR |
                UART_A_RX_STS_STOP_ERROR | UART_A_RX_STS_OVERRUN)) != 0u){
                g_drvUART_driverStatus.uart_rxStatusErr[DRV_UART_MODULE_A]++;
    }
         else{
              drvUART_fifoPushByte(DRV_UART_RX_FIFO_A, dataByte);
      uAmaxrcv++;
        }
    }
}while((statusByte & UART_B_RX_STS_FIFO_NOTEMPTY) != 0u);
if (uAmaxrcv > uAprevmaxrcv){
     uAprevmaxrcv=uAmaxrcv;
}
}

What we have seen that when we care disabling the interrupt for short time (not more than 1 byte in 4 bytes HW fifo) we are not loosing bytes, but when we are increasing the time of disale interrupt (global interrupt) we start to loose bytes even when 'uAprevmaxrcv'  is 2.
Thanks for any help,

Dudi

Hi,

I've been trying to make a hardware based boost converter using PSOC5 but it isn't working. I have attached a picture of my hardware configuration.

The PWM's period is 21.333us and the listed sampling rate of the ADC is 100000, giving the system about 10us of time for the system to complete the DMA and trigger the interrupt along with running a few lines of code. However using the debugger the interrupt runs either only once or not at all. I know it at least has been set up properly because it can be triggered.

I have attached the project below and am hoping someone might have insight as to why it is not repeatedly triggering.

Any help would be appreciated

Hi,

I need to convert the code example that you can find in PSOC 4 kit 037 to PSOC 5LP PN:CY8C5888LTI-LP097.

The code example his name is sensor BLDC motor PSOC 4. 

link:CY8CKIT-037 PSoC 4 Motor Control Evaluation Kit (cypress.com)

PLS convert it and explain how you do it.

How can i change the factors of measurements ADC?

PLS explain the functionality of the design.

Thank you.

BR,

Ilan

I am using a timer to detect a reset signal of 500us and then give a presence (in an interrupt)(this is a 1-wire communication) , the problem i am facing is that when i given in some other commands after this reset signal at times i am not able to either detect the reset and give presence or the presence is given in between the commands. (I use psoc lp 5)

The timer config as:

trigger: at falling edge

capture: raising edge

interrupt on capture

CR: this is the control reg to reset the timer block inside the interrupt

both the control reg and timer block are connected to 4MHz clock

24bit, period of: 16777216

I don't know the mistake i am doing in this case. Here is my isr:

CY_ISR(isr_1_Handler)
{

Count =Timer_INIT_PERIOD-Timer_ReadCounter();

if(Count>480*4)
{
CyDelayUs(15);
TX_Write(0);
CyDelayUs(102);
TX_Write(1);
CyDelayUs(2);

}
else if(Count>65*4 && Count<75*4)
{
CyDelayUs(2);
TX_Write(0);
CyDelayUs(11);
TX_Write(1);
CyDelayUs(2);
}

CR_Write(1);
}

Note: I tried adding in a flag inside the interrupt and giving the presence outside checking the flag and in that case it missed the resets even when only resets where given without any commands.

I am attaching master code that i used to generate the resets and command and also the timer code (this timer code doesn't do anything other than giving a presence whenever a reset is detected)

Have been trying it out for a long time and am getting errors when i haves huge cycles as 500 times 6 errors, when u run these in two codes in two different psocs u can see the issue. Any help would be great !

1. They are all 24-bit data(or multiples of) with a clock and data on positive or negative edge triggering
2. There is a gap between data packets that is orders of magnitude greater than the clock to distinguish start.