{{/media/uploads/khsaleh/img_2639.jpg}} Successful interrupt on PB_8 ( it failed on PA_3, any thought?) {{/media/uploads/khsaleh/pb_8.jpg}} InputArray[1] is the state of the inputs. What is InputArray[0] Please find here copy of main.cpp /** ****************************************************************************** * @file main.cpp * @author AST/CLs * @version V1.1.0 * @date February 23rd, 2016 * @brief mbed test application for the STMicroelectronics X-NUCLEO-PLC01A1 * PLC Expansion Board. ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ /* expansion board specific header files. */ #include "x_nucleo_plc01a1_class.h" #include "rtos.h" /* Definitions ---------------------------------------------------------------*/ /* Uncomment this for OUTPUT_CYCLING ENABLE */ //#define OUTPUT_CYCLING /* Variables -----------------------------------------------------------------*/ /* Array for input data from Digital Input Termination Device */ uint8_t inputArray[2] = {0x00, 0x00}; /* Array for output data to Solid State Relay */ uint8_t outputArray[2] = {0x00, 0x00}; /* Number of channels in ON state */ uint8_t Ch_On = 0x00; /*==================================================== pulse generator is connected to pin and the thread implements the pulse counter - can the PLC inputs generate similar interrupts? ======================================================*/ Timer t1; InterruptIn in(PB_8); //(PA_3) not working; int count = 0; float t_period = 0; // This is the period between interrupts in microseconds float HZ = 0; void counter(void ) { count++; t_period = t1.read_us(); // Get time since last interrupt HZ = (1/t_period)*1000000; // Convert period (in us) to frequency (Hz) t1.reset(); // Reset timer and wait for next interrupt } void print_thread(void const* argument) { while (true){ Thread::wait(10000); printf("pulses = %d\nFreq = %.2f\ninArray[0] %.2x\ninArray[1] %.2x\n "\ ,count,HZ,inputArray[0],inputArray[1]); fflush(stdout); } } /* Functions -----------------------------------------------------------------*/ /** * @brief Receive input data from Digital Input Termination Device * @param None * @retval None */ void DigitalInputArrayHandler(X_NUCLEO_PLC01A1 &plc) { plc.plcInput().DigInpArray_GetInput(inputArray); } /** * @brief Select output function and set outputs * @param None * @retval None */ void SsrelayHandler(X_NUCLEO_PLC01A1 &plc) { /* Set outputArray as DigInpArray RxBuffer */ outputArray[1] = plc.signalMirror(inputArray[1]); /* Uncomment the relevant function as required */ //outputArray[1] = plc.signalMirror(0xFF); //outputArray[1] = plc.outputFreeze(0xFF,5000); //outputArray[1] = plc.outputRegroup(0xFF); //Ch_On = plc.inputSum(&outputArray[1],0xFF); //outputArray[1] = plc.setOutput(0xFF); //outputArray[1] = plc.inputsAND(0xFF,0x0F); //outputArray[1] = plc.inputsOR(0xF0,0x0F); //outputArray[1] = plc.inputsNOT(0x00); //outputArray[1] = plc.inputsXOR(0xFF,0x00); /* Parity bits calculation */ plc.outputParityBits(outputArray); /* Send output information to solid state relay */ plc.plcOutput().Ssrelay_SetOutput(outputArray); } void setup(SPI &spi, int bits, int mode = 0, int frequency_hz = 1E6) { /* Set given configuration. */ spi.format(bits, mode); spi.frequency(frequency_hz); } /* Main ----------------------------------------------------------------------*/ int main() { /*----- Initialization. -----*/ /* Initializing SPI bus. */ SPI spi(X_NUCLEO_PLC01A1_PIN_SPI_MOSI, X_NUCLEO_PLC01A1_PIN_SPI_MISO, X_NUCLEO_PLC01A1_PIN_SPI_SCLK); setup(spi, X_NUCLEO_PLC01A1_PIN_SPI_BITS); /* Initializing X_NUCLEO_PLC01A1 IO Channels Component. */ X_NUCLEO_PLC01A1 plc(X_NUCLEO_PLC01A1_PIN_SPI_CS1, X_NUCLEO_PLC01A1_PIN_SPI_CS2, X_NUCLEO_PLC01A1_PIN_OUT_EN, spi); printf("\n\n*** RTOS PLC example ***\n"); // pulse counter in.mode(PullDown); // Set the pin to Pull Down mode. in.rise(&counter); // Set up the interrupt for rising edge t1.start(); // start the timer // Compiler raises "Deprecated" warning, what is the updated declaration? Thread thread(print_thread,NULL, osPriorityNormal, DEFAULT_STACK_SIZE); while(1) { plc.plcInput().SetReadStatus(1); /* Polling input device to refresh input state */ if(plc.plcInput().GetReadStatus()) { plc.plcInput().SetReadStatus(0); #ifdef OUTPUT_CYCLING plc.outputCycling(); #else DigitalInputArrayHandler(plc); SsrelayHandler(plc); #endif /* OUTPUT_CYCLING */ } wait_ms(10); } }