testing

newcode/main.c

@@ -46,14 +46,16 @@ void io_setup(void){
 void modbusGet(void) {
 	if (modbusGetBusState() & (1<<ReceiveCompleted))
     {
+        PORTD.OUTSET = 1 << 5;
         switch(rxbuffer[1]) {
             case fcReadHoldingRegisters: ;
-                modbusExchangeRegisters((uint16_t*)ch_values, 0, 18);
+                modbusExchangeRegisters((uint16_t*)ch_values, 0, 20);
                 break;
             default:
                 modbusSendException(ecIllegalFunction);
                 break;
         }
+        PORTD.OUTCLR = 1 << 5;
     }
 }
 

newcode/pt100.c

@@ -5,7 +5,7 @@
 #include "pt100.h"
 
 uint16_t adc_buffer[AVRG];
-volatile float ch_values[9];
+volatile float ch_values[10];
 
 void adc_init(void){
     ADCA.CTRLB = ADC_FREERUN_bm;
@@ -70,15 +70,21 @@ ISR(DMA_CH0_vect){
     ADCA.CTRLB = 0; // stop ADC
 
     uint8_t old_pin = pin;
-    pin=(pin+1)%9;
+    pin=(pin+1)%10;
-    ADCA.CH0.MUXCTRL = pin << ADC_CH_MUXPOS_gp; // give MUX time to switch during averaging
+    ADCA.CH0.MUXCTRL = pin << ADC_CH_MUXPOS_gp; // give MUX time to switch during calculation
     float temp = avrg(adc_buffer, AVRG);
-
     temp = temp - ADC_0V_COUNT;
     temp = (temp)/ (4096-ADC_0V_COUNT) * ADC_MAX_VOLT;
-    temp = (temp * REF_OHMS)/(SUPPLY_VOLTS - temp);
+
-    temp = (temp-100)/0.3927; //pt100 formula
+    if(old_pin <= 8){ /* pt100 temperature channels */
-    ch_values[old_pin] = temp;
+        temp = (temp * REF_OHMS)/(SUPPLY_VOLTS - temp);
+        temp = (temp-100)/0.3927; //pt100 formula
+        ch_values[old_pin] = temp;
+    }
+    if(old_pin == 9){ /* 24V supply voltage measurement */
+        // resistor devider 33k and 1k
+        ch_values[old_pin] = temp * 34;
+    }
 
     DMA.CH0.TRIGSRC = DMA_CH_TRIGSRC_ADCA_CH0_gc;
     ADCA.CTRLB = ADC_FREERUN_bm; // start ADC again

newcode/pt100.h

@@ -8,7 +8,7 @@
 #define ADC_0V_COUNT 170
 #define ADC_MAX_VOLT 1.95
 
-extern volatile float ch_values[9];
+extern volatile float ch_values[10];
 
 void adc_init(void);
 void dma_init(void);

newcode/yaMBSiavr.c

@@ -74,18 +74,12 @@ void modbusSetAddress(unsigned char newadr)
 #if PHYSICAL_TYPE == 485
 void transceiver_txen(void)
 {
-	#if BOARD_TYPE == bType5chLedDim
-	PORTD|=(1<<7);
-	#endif
 	TRANSCEIVER_ENABLE_PORT|=(1<<TRANSCEIVER_ENABLE_PIN);
 }
 
- void transceiver_rxen(void)
+void transceiver_rxen(void)
 {
 	TRANSCEIVER_ENABLE_PORT&=~(1<<TRANSCEIVER_ENABLE_PIN);
-	#if BOARD_TYPE == bType5chLedDim
-	PORTD&=~(1<<7);
-	#endif
 }
 #endif
 
@@ -209,8 +203,8 @@ ISR(UART_TRANSMIT_INTERRUPT)
 #ifndef __AVR_ATxmega32A4__
 		UART_CONTROL&=~(1<<UART_UDRIE);
 #else
-        USARTD0_CTRLA &= ~(USART_DREINTLVL_gm);
+        UART.CTRLA &= ~(USART_DREINTLVL_gm);
-#endif
+#endif//__AVR_ATxmega32A4__
 	}
 }
 
@@ -236,34 +230,32 @@ void modbusInit(void)
     UCSRC = (3<<UCSZ0); //Frame Size
 #endif
 	UART_CONTROL = (1<<TXCIE)|(1<<RXCIE)|(1<<RXEN)|(1<<TXEN); // USART receiver and transmitter and receive complete interrupt
-	#if PHYSICAL_TYPE == 485
+#else//URSEL
-	TRANSCEIVER_ENABLE_PORT_DDR|=(1<<TRANSCEIVER_ENABLE_PIN);
+    UART.CTRLC = USART_CHSIZE_8BIT_gc;
-	transceiver_rxen();
-	#endif
-	BusState=(1<<TimerActive);
-#else
-    //8bit
-    USARTD0.CTRLC = USART_CHSIZE0_bm | USART_CHSIZE1_bm;
 
-    //38400
+    // set baudrate
-    USARTD0.BAUDCTRLA = bsel;
+    UART.BAUDCTRLA = UART_BSEL;
-    USARTD0.BAUDCTRLB = 0 | (bsel >> 8) | (bscale << USART_BSCALE0_bp);
+    UART.BAUDCTRLB = 0 | (UART_BSEL >> 8) | (UART_BSCALE << USART_BSCALE0_bp);
 
-    USARTD0.CTRLB = USART_TXEN_bm | USART_RXEN_bm;
+    UART.CTRLB = USART_TXEN_bm | USART_RXEN_bm;
 
     //Interrupt enable (levels)
-    USARTD0.CTRLA |= USART_RXCINTLVL_HI_gc;
+    UART.CTRLA |= USART_RXCINTLVL_HI_gc;
-    USARTD0.CTRLA |= USART_TXCINTLVL_HI_gc;
+    UART.CTRLA |= USART_TXCINTLVL_HI_gc;
 
-    PORTD_OUTSET = PIN3_bm;
+    //PORTD_OUTSET = PIN3_bm;
     PORTD_DIRSET = PIN3_bm;
-    PORTD_OUTCLR = PIN2_bm;
+    //PORTD_OUTCLR = PIN2_bm;
-    PORTD_DIRCLR = PIN2_bm;
+    //PORTD_DIRCLR = PIN2_bm;
 
-    //TODO Physical type 485
+#endif//__AVR_ATxmega32A4__
+
+    #if PHYSICAL_TYPE == 485
+    TRANSCEIVER_ENABLE_PORT_DDR|=(1<<TRANSCEIVER_ENABLE_PIN);
+    transceiver_rxen();
+    #endif
 
     BusState=(1<<TimerActive);
-#endif
 }
 
 /* @brief: Sends a response.
@@ -284,8 +276,7 @@ void modbusSendMessage(unsigned char packtop)
 #ifndef __AVR_ATxmega32A4__
     UART_CONTROL|=(1<<UART_UDRIE);
 #else
-    //TODO use define for usartd
+    UART.CTRLA |= USART_DREINTLVL_HI_gc;
-    USARTD0_CTRLA |= USART_DREINTLVL_HI_gc;
 #endif
 
 	BusState&=~(1<<ReceiveCompleted);

newcode/yaMBSiavr.h

@@ -57,15 +57,11 @@ THE POSSIBILITY OF SUCH DAMAGE.
 /*
 * Definitions for transceiver enable pin.
 */
-#if BOARD_TYPE == bType5chLedDim
+
-	#define TRANSCEIVER_ENABLE_PORT PORTD
+#define TRANSCEIVER_ENABLE_PORT PORTD_OUT
-	#define TRANSCEIVER_ENABLE_PIN 5
+#define TRANSCEIVER_ENABLE_PIN 4
-	#define TRANSCEIVER_ENABLE_PORT_DDR DDRD
+#define TRANSCEIVER_ENABLE_PORT_DDR PORTD_DIR
-#else
+
-	#define TRANSCEIVER_ENABLE_PORT PORTD
-	#define TRANSCEIVER_ENABLE_PIN 2
-	#define TRANSCEIVER_ENABLE_PORT_DDR DDRD
-#endif
 /**
  * @brief    
  *           At the moment the user has to set the value for Baudrate and
@@ -188,11 +184,16 @@ THE POSSIBILITY OF SUCH DAMAGE.
 #define UART_UDRIE    UDRIE
 
 #elif defined(__AVR_ATxmega32A4__)
+#define UART                                USARTD0
 #define UART_TRANSMIT_COMPLETE_INTERRUPT    USARTD0_TXC_vect
 #define UART_RECEIVE_INTERRUPT              USARTD0_RXC_vect
 #define UART_TRANSMIT_INTERRUPT             USARTD0_DRE_vect
 #define UART_DATA                           USARTD0.DATA
 
+//38400 Baud at 32MHz system clock
+#define UART_BSEL                           51
+#define UART_BSCALE                         0
+
 
 #else
 #error "no definition available"
@@ -219,7 +220,7 @@ THE POSSIBILITY OF SUCH DAMAGE.
 * Use 485 or 232, default: 485
 * Use 232 for testing purposes or very simple applications that do not require RS485 and bus topology.
 */
-#define PHYSICAL_TYPE 232//485 //possible values: 485, 232
+#define PHYSICAL_TYPE 485 //possible values: 485, 232
 
 /*
 #define modbusBaudrate 38400

plot.py

@@ -0,0 +1,62 @@
+import time
+from simple_pid import PID
+from itertools import count
+import matplotlib.pyplot as plt
+from matplotlib.animation import FuncAnimation
+
+import minimalmodbus
+
+tempSens = minimalmodbus.Instrument('/dev/ttyUSB1', 1)
+tempSens.serial.baudrate = 38400
+
+OutputDriver = minimalmodbus.Instrument('/dev/ttyUSB1', 1)
+OutputDriver.serial.baudrate = 38400
+
+pid = PID(10, 0.01, 0.1, setpoint=100)
+
+plt.style.use('fivethirtyeight')
+
+x_values = []
+y_values = []
+
+index = count()
+
+
+def animate(i):
+    try:
+        temp = tempSens.read_float(1, functioncode=4, byteorder=0)
+        y_values.append(temp)
+        x_values.append(next(index))
+        #print(temp)
+        print(tempSens.read_float(11, functioncode=4, byteorder=0))
+
+#        print(temp, end='\t')
+#        control = pid(temp)
+#        if(control>100):
+#            control = 100;
+#        control = (control/1000.0)
+#        if(control < 0):
+#            control = 0
+#        print(control, end='\t')
+#        print(0.1-control)
+#
+#        if(control > 0):
+#            OutputDriver.write_bit(0, 1, functioncode=15)
+#
+#        time.sleep(control)
+#
+#        if(control<0.1):
+#            OutputDriver.write_bit(0, 0, functioncode=15)
+#    
+#        time.sleep(0.1-control)
+
+        plt.cla()
+        plt.scatter(x_values, y_values)
+    except Exception as e: print(e)
+
+
+ani = FuncAnimation(plt.gcf(), animate, 2000)
+
+
+plt.tight_layout()
+plt.show()