Update Call
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121
main.c
121
main.c
@ -1,9 +1,9 @@
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/*
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* File: main.c
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* Author: Bruno Rybársky
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*
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* Created on November 17, 2022, 12:49 PM
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*/
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* File: main.c
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* Author: Bruno Rybársky
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*
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* Created on November 17, 2022, 12:49 PM
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*/
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//PINS
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//GP0 - Button 1
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@ -104,20 +104,19 @@
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/* These are the definitions */
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const char String1[3] = "OK"; //ok response
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const char String2[11] = "NO CARRIER"; //call state change
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const char String3[6] = "ERROR"; //ok response
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const char String2[27] = "+CLIP: \"+421905708125\",145"; //call state change
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const char String4[10] = "SMS Ready"; //modem startup
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const char StringDial[14] = "+421905708125";
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//#define TMR0_BAUD (256-133) /* trial and error value, comes to 3603 Baud */
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#define TMR0_BAUD (256-133) /* trial and error value, comes to 3603 Baud */
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#define TMR0_BAUD (256-128) /* trial and error value, comes to 3603 Baud */
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#define TxBUF_SIZE 32
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#define RxBufSize 8
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volatile char TxBuf[TxBUF_SIZE] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00};
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00};
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#define TxBUF_MASK (TxBUF_SIZE-1)
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volatile char RxBuf[RxBufSize];
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volatile char RxIPtr;
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@ -136,6 +135,7 @@ volatile char TxCount;
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volatile char RxFlags;
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volatile char RxBufDiff;
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volatile char InChar;
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volatile char turnOffCounter = 0;
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//start parsing serial data:
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@ -166,14 +166,15 @@ volatile char Millis = 0;
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/* processor). When a character has been added, the "new data" flag is */
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/* set to tell the interrupt routine to restart sending data. */
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/* Note: data can be added to the buffer faster than the interrupt */
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/* routine can transmit it */
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void SendChar(char c) {
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GIE = 0; /* disable interrupts to avoid a race condition */
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GIE = 0; /* disable interrupts to avoid a race condition */
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TxBuf[TxOPtr++] = c;
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TxOPtr = TxOPtr & TxBUF_MASK;
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TxFlags |= 0x80;
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GIE = 1; /* safe to restart them now */
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GIE = 1; /* safe to restart them now */
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}
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void SendString(const char *c) {
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@ -204,15 +205,15 @@ void __interrupt()isr(void) {
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// if millis overflows
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// Debouncing code sampling GPIO2 only runs when Millis overflows
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//if ((GPIOtemp & 0x0D) != (GPIO & 0x0D)) { // compare current input with last round
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if ((GPIO & 0x03) != GPIOold){
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if ((GPIO & 0x03) != GPIOold) {
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GPIOtemp = (GPIO & 0x03) ^ GPIOold;
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GPIOold = GPIO & 0x03;
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// GPIO2 changed, perform debouncing
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if (GPIOtemp & 0x01) {
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if (!(GPIO & 0x01)) {
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GPIOdeb |= (1 << 4); // arm
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}
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}
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else {
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GPIOdeb |= (1 << 5); // disarm
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}
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@ -221,15 +222,17 @@ void __interrupt()isr(void) {
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if (GPIOtemp & 0x02) {
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if (!(GPIO & 0x02)) {
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GPIOdeb |= (1 << 6); // arm
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}
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}
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else {
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GPIOdeb |= (1 << 7); // disarm
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}
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}
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}
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if (turnOffCounter > 0 && !--turnOffCounter) {
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GPIO &= 0xFD;
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}
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}
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// Routine to receive asynchronous data from GPIO5
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// credit: http://www.electro-tech-online.com/micro-controllers/18828-finding-serial-start-bit-bit-banging.html#post117227
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asm("decfsz _RecSkips,F");
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@ -246,8 +249,8 @@ void __interrupt()isr(void) {
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asm("goto DoneRS232_Rx");
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asm("movf _InByte,W");
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asm("movwf _RxChar");
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asm("bsf _RxFlags,1"); // b_byte_available
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asm("bcf _RxFlags,0"); // b_receiving
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asm("bsf _RxFlags,1"); // b_byte_available
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asm("bcf _RxFlags,0"); // b_receiving
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RxBuf[RxIPtr++] = RxChar; /* write received byte to circular buffer */
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RxIPtr = RxIPtr & 0x7;
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asm("goto DoneRS232_Rx");
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@ -259,7 +262,7 @@ void __interrupt()isr(void) {
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asm("goto DoneRS232_Rx");
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asm("movlw 4");
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asm("movwf _RecSkips");
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asm("bsf _RxFlags,0"); // b_receiving
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asm("bsf _RxFlags,0"); // b_receiving
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asm("movlw 80h");
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asm("movwf _InByte");
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asm("DoneRS232_Rx:");
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@ -270,34 +273,34 @@ void __interrupt()isr(void) {
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// Here check if there is data being sent, or ready to send
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asm("btfsc _TxFlags, 6"); /* already sending ?*/
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asm("goto Tx_Sending");
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asm("btfsc _TxFlags, 7"); // data to send
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asm("btfsc _TxFlags, 7"); // data to send
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asm("goto Tx_Start_Bit");
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asm("incf _TxSkips, F"); // set back to 1, so we retest next time round
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asm("goto DoneRS232_Tx"); // nothing to do
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asm("incf _TxSkips, F"); // set back to 1, so we retest next time round
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asm("goto DoneRS232_Tx"); // nothing to do
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// come here to start sending a new byte
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asm("Tx_Start_Bit:");
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asm("decfsz _TxSkips, f");
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asm("goto DoneRS232_Tx");
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asm("bcf GPIO, 4"); // hardware start bit
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asm("bcf GPIO, 4"); // hardware start bit
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TxChar = TxBuf[TxIPtr++];
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TxIPtr = TxIPtr & TxBUF_MASK;
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TxFlags = 8; // initialise bit count, clear FULL flag
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asm("bsf _TxFlags, 6"); // indicate we are sending data
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asm("bsf _TxFlags, 6"); // indicate we are sending data
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TxSkips = 3;
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asm("goto DoneRS232_Tx");
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//here if we are already in the process of sending data
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asm("Tx_Sending:");
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asm("decfsz _TxSkips, F"); // only waggle o/p every third intr.
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asm("decfsz _TxSkips, F"); // only waggle o/p every third intr.
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asm("goto DoneRS232_Tx");
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asm("btfsc _TxFlags, 5"); // time to send stop bit?
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asm("btfsc _TxFlags, 5"); // time to send stop bit?
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asm("goto Tx_Stop_Bit");
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asm("bcf STATUS, 0"); // carry bit
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asm("bcf STATUS, 0"); // carry bit
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asm("rrf _TxChar, f");
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asm("btfss STATUS, 0");
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asm("goto Tx_Set_Bit");
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@ -308,13 +311,13 @@ void __interrupt()isr(void) {
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// here we have sent the data bit, decrement the bit counter
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asm("Tx_Sent_Bit:");
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asm("movlw 3");
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asm("movwf _TxSkips"); // reset Tx skip counter for 3 more intrs
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asm("decf _TxFlags, F"); // bit count in lower 3 bits
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asm("movwf _TxSkips"); // reset Tx skip counter for 3 more intrs
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asm("decf _TxFlags, F"); // bit count in lower 3 bits
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asm("movf _TxFlags, W");
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asm("andlw 7");
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asm("btfss STATUS, 2"); // if result is zero
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asm("btfss STATUS, 2"); // if result is zero
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asm("goto DoneRS232_Tx");
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asm("bsf _TxFlags, 5"); // all data sent, sent stop bit next time
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asm("bsf _TxFlags, 5"); // all data sent, sent stop bit next time
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asm("goto DoneRS232_Tx");
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// here to send the stop bit and check if there''s more data
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@ -323,15 +326,15 @@ void __interrupt()isr(void) {
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asm("bsf GPIO, 4");
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asm("movlw 3");
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asm("movwf _TxSkips");
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asm("bcf _TxFlags, 6"); // sending_data flag
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asm("bcf _TxFlags, 5"); // send_stop_bit flag
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asm("bcf _TxFlags, 6"); // sending_data flag
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asm("bcf _TxFlags, 5"); // send_stop_bit flag
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TxCount = 1 + TxOPtr - TxIPtr;
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asm("decfsz _TxCount, F"); // counter of number of chars still to send
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asm("decfsz _TxCount, F"); // counter of number of chars still to send
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asm("goto Tx_More");
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asm("goto DoneRS232_Tx"); // all sent
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asm("goto DoneRS232_Tx"); // all sent
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asm("Tx_More:");
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asm("bsf _TxFlags, 7"); // signify more data to send
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asm("bsf _TxFlags, 7"); // signify more data to send
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asm("DoneRS232_Tx:");
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@ -356,28 +359,25 @@ void init(void) {
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OSCCONbits.IRCF2 = 1;
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TRISIObits.TRISIO5 = 1;
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TRISIObits.TRISIO4 = 0;
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TRISIObits.TRISIO1 = 1;
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TRISIObits.TRISIO1 = 0;
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TRISIObits.TRISIO0 = 1;
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WPUbits.WPU1 = 1;
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WPUbits.WPU0 = 1;
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ADCON0bits.ADON = 0;
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ANSELbits.ANS0 = 0;
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ANSELbits.ANS1 = 0;
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ANSELbits.ANS2 = 0;
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ANSELbits.ANS3 = 0;
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GPIObits.GP1 = 0;
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}
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int startSMS() {
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void startSMS(const int flagBit) {
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if (FlagC & (1 << 3)) {
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SendString("AT+CMGS=\"");
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SendString(StringDial);
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SendString("\"\n");
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Flag3 |= (1 << 5);
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return 1;
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Flag4 |= (1 << flagBit);
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}
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return 0;
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}
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void processString(const char *string, volatile char *inputCharacter, const int flagBit) {
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@ -388,6 +388,11 @@ void processString(const char *string, volatile char *inputCharacter, const int
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if (flagBit == 3) {
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SendString("AT+CMGF=1\r\n");
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}
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if (flagBit == 1) {
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GPIO |= 0x02;
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turnOffCounter = 100;
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SendString("ATH\n");
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}
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}
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if (*inputCharacter != string[messagePointer]) {
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Flag2 &= ~(1 << flagBit);
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@ -398,9 +403,7 @@ void processString(const char *string, volatile char *inputCharacter, const int
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void handleGPIO(const int pin, const int flagBit) {
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if (GPIOdeb & (1 << pin)) {
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GPIOdeb &= ~(1 << pin);
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if(startSMS()){
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Flag4 |= (1 << flagBit);
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}
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startSMS(flagBit);
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}
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}
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@ -408,11 +411,8 @@ void main(void) {
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init();
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SendChar('\n');
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while (1) {
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handleGPIO(6, 0);
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handleGPIO(7, 1);
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handleGPIO(4, 2);
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handleGPIO(5, 3);
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handleGPIO(4, 0);
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handleGPIO(5, 1);
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if (RxIPtr != RxIPtr_old) {
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if (RxIPtr < RxIPtr_old) {
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@ -430,25 +430,15 @@ void main(void) {
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if (Flag3 & (1 << 5)) {
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if (Flag4 & (1 << 0)) {
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SendString("1 ON");
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SendString("ON");
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Flag4 &= ~(1 << 0);
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}
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if (Flag4 & (1 << 1)) {
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SendString("1 OFF");
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SendString("OFF");
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Flag4 &= ~(1 << 1);
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}
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if (Flag4 & (1 << 2)) {
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SendString("2 ON");
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Flag4 &= ~(1 << 2);
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}
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if (Flag4 & (1 << 3)) {
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SendString("2 OFF");
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Flag4 &= ~(1 << 3);
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}
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SendChar(26);
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Flag3 &= ~(1 << 5);
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}
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@ -456,7 +446,6 @@ void main(void) {
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processString(String1, &InChar, 0);
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processString(String2, &InChar, 1);
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processString(String3, &InChar, 2);
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processString(String4, &InChar, 3);
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messagePointer++;
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@ -465,4 +454,4 @@ void main(void) {
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RxIPtr_old = RxIPtr;
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}
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}
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}
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}
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