| 0,0 → 1,524 |
|---|
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Copyright (c) 04.2007 Holger Buss |
| // + only for non-profit use |
| // + www.MikroKopter.com |
| // + see the File "License.txt" for further Informations |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| |
| #include <avr/io.h> |
| #include <avr/interrupt.h> |
| #include <avr/wdt.h> |
| #include <stdarg.h> |
| #include <string.h> |
| |
| #include "main.h" |
| #include "menu.h" |
| #include "timer0.h" |
| #include "uart0.h" |
| #include "ubx.h" |
| #include "led.h" |
| |
| |
| #define FC_ADDRESS 1 |
| #define NC_ADDRESS 2 |
| #define MK3MAG_ADDRESS 3 |
| |
| #define FM_ADDRESS 10 // FOLLOW ME |
| |
| #define FALSE 0 |
| #define TRUE 1 |
| |
| uint8_t text[100]; // globally used text buffer |
| |
| //int8_t test __attribute__ ((section (".noinit"))); |
| uint8_t Request_VerInfo = FALSE; |
| uint8_t Request_Display = FALSE; |
| uint8_t Request_Display1 = FALSE; |
| uint8_t Request_ExternalControl = FALSE; |
| uint8_t Request_DebugData = FALSE; |
| uint8_t Request_DebugLabel = 255; |
| uint8_t Request_SendFollowMe = FALSE; |
| uint8_t DisplayLine = 0; |
| |
| volatile uint8_t txd_buffer[TXD_BUFFER_LEN]; |
| volatile uint8_t rxd_buffer_locked = FALSE; |
| volatile uint8_t rxd_buffer[RXD_BUFFER_LEN]; |
| volatile uint8_t txd_complete = TRUE; |
| volatile uint8_t ReceivedBytes = 0; |
| volatile uint8_t *pRxData = 0; |
| volatile uint8_t RxDataLen = 0; |
| |
| uint8_t PcAccess = 100; |
| |
| ExternControl_t ExternControl; |
| DebugOut_t DebugOut; |
| UART_VersionInfo_t UART_VersionInfo; |
| |
| uint16_t DebugData_Timer; |
| uint16_t DebugData_Interval = 500; // in 1ms |
| |
| Waypoint_t FollowMe; |
| |
| const uint8_t ANALOG_LABEL[32][16] = |
| { |
| //1234567890123456 |
| "Analog_Ch0 ", //0 |
| "Analog_Ch1 ", |
| "Analog_Ch2 ", |
| "Analog_Ch3 ", |
| "Analog_Ch4 ", |
| "Analog_Ch5 ", //5 |
| "Analog_Ch6 ", |
| "Analog_Ch7 ", |
| "UBat ", |
| "Speed_North ", |
| "Speed_East ", //10 |
| "Speed_Top ", |
| "NumOfSats ", |
| "Pos.Longitude ", |
| "Pos.Latitude ", |
| "Pos.Altitude ", //15 |
| "Zellenzahl ", |
| "PowerOn ", |
| "Debug18 ", |
| "Debug19 ", |
| "Debug20 ", //20 |
| "Debug21 ", |
| "Debug22 ", |
| "Debug23 ", |
| "Debug24 ", |
| "Debug25 ", //25 |
| "Debug26 ", |
| "Debug27 ", |
| "Debug28 ", |
| "Debug29 ", |
| "Debug30 ", //30 |
| "Debug31 " |
| }; |
| |
| |
| |
| /****************************************************************/ |
| /* Initialization of the USART0 */ |
| /****************************************************************/ |
| void USART0_Init (void) |
| { |
| uint8_t sreg = SREG; |
| uint16_t ubrr = (uint16_t) ((uint32_t) SYSCLK/(8 * USART0_BAUD) - 1); |
| |
| // disable all interrupts before configuration |
| cli(); |
| |
| // disable RX-Interrupt |
| UCSR0B &= ~(1 << RXCIE0); |
| // disable TX-Interrupt |
| UCSR0B &= ~(1 << TXCIE0); |
| |
| // set direction of RXD0 and TXD0 pins |
| // set RXD0 (PD0) as an input pin |
| PORTD |= (1 << PORTD0); |
| DDRD &= ~(1 << DDD0); |
| // set TXD0 (PD1) as an output pin |
| PORTD |= (1 << PORTD1); |
| DDRD |= (1 << DDD1); |
| |
| // USART0 Baud Rate Register |
| // set clock divider |
| UBRR0H = (uint8_t)(ubrr >> 8); |
| UBRR0L = (uint8_t)ubrr; |
| |
| // USART0 Control and Status Register A, B, C |
| |
| // enable double speed operation in |
| UCSR0A |= (1 << U2X0); |
| // enable receiver and transmitter in |
| UCSR0B = (1 << TXEN0) | (1 << RXEN0); |
| // set asynchronous mode |
| UCSR0C &= ~(1 << UMSEL01); |
| UCSR0C &= ~(1 << UMSEL00); |
| // no parity |
| UCSR0C &= ~(1 << UPM01); |
| UCSR0C &= ~(1 << UPM00); |
| // 1 stop bit |
| UCSR0C &= ~(1 << USBS0); |
| // 8-bit |
| UCSR0B &= ~(1 << UCSZ02); |
| UCSR0C |= (1 << UCSZ01); |
| UCSR0C |= (1 << UCSZ00); |
| |
| // flush receive buffer |
| while ( UCSR0A & (1<<RXC0) ) UDR0; |
| |
| // enable interrupts at the end |
| // enable RX-Interrupt |
| UCSR0B |= (1 << RXCIE0); |
| // enable TX-Interrupt |
| UCSR0B |= (1 << TXCIE0); |
| |
| // initialize the debug timer |
| DebugData_Timer = SetDelay(DebugData_Interval); |
| |
| // unlock rxd_buffer |
| rxd_buffer_locked = FALSE; |
| pRxData = 0; |
| RxDataLen = 0; |
| |
| // no bytes to send |
| txd_complete = TRUE; |
| |
| UART_VersionInfo.SWMajor = VERSION_MAJOR; |
| UART_VersionInfo.SWMinor = VERSION_MINOR; |
| UART_VersionInfo.SWPatch = VERSION_PATCH; |
| UART_VersionInfo.ProtoMajor = VERSION_SERIAL_MAJOR; |
| UART_VersionInfo.ProtoMinor = VERSION_SERIAL_MINOR; |
| |
| // restore global interrupt flags |
| SREG = sreg; |
| } |
| |
| /****************************************************************/ |
| /* USART0 transmitter ISR */ |
| /****************************************************************/ |
| ISR(USART0_TX_vect) |
| { |
| static uint16_t ptr_txd_buffer = 0; |
| uint8_t tmp_tx; |
| if(!txd_complete) // transmission not completed |
| { |
| ptr_txd_buffer++; // die [0] wurde schon gesendet |
| tmp_tx = txd_buffer[ptr_txd_buffer]; |
| // if terminating character or end of txd buffer was reached |
| if((tmp_tx == '\r') || (ptr_txd_buffer == TXD_BUFFER_LEN)) |
| { |
| ptr_txd_buffer = 0; // reset txd pointer |
| txd_complete = 1; // stop transmission |
| } |
| UDR0 = tmp_tx; // send current byte will trigger this ISR again |
| } |
| // transmission completed |
| else ptr_txd_buffer = 0; |
| } |
| |
| /****************************************************************/ |
| /* USART0 receiver ISR */ |
| /****************************************************************/ |
| ISR(USART0_RX_vect) |
| { |
| static uint16_t crc; |
| static uint8_t ptr_rxd_buffer = 0; |
| uint8_t crc1, crc2; |
| uint8_t c; |
| |
| c = UDR0; // catch the received byte |
| |
| if(rxd_buffer_locked) return; // if rxd buffer is locked immediately return |
| |
| // the rxd buffer is unlocked |
| if((ptr_rxd_buffer == 0) && (c == '#')) // if rxd buffer is empty and syncronisation character is received |
| { |
| rxd_buffer[ptr_rxd_buffer++] = c; // copy 1st byte to buffer |
| crc = c; // init crc |
| } |
| #if 0 |
| else if (ptr_rxd_buffer == 1) // handle address |
| { |
| rxd_buffer[ptr_rxd_buffer++] = c; // copy byte to rxd buffer |
| crc += c; // update crc |
| } |
| #endif |
| else if (ptr_rxd_buffer < RXD_BUFFER_LEN) // collect incomming bytes |
| { |
| if(c != '\r') // no termination character |
| { |
| rxd_buffer[ptr_rxd_buffer++] = c; // copy byte to rxd buffer |
| crc += c; // update crc |
| } |
| else // termination character was received |
| { |
| // the last 2 bytes are no subject for checksum calculation |
| // they are the checksum itself |
| crc -= rxd_buffer[ptr_rxd_buffer-2]; |
| crc -= rxd_buffer[ptr_rxd_buffer-1]; |
| // calculate checksum from transmitted data |
| crc %= 4096; |
| crc1 = '=' + crc / 64; |
| crc2 = '=' + crc % 64; |
| // compare checksum to transmitted checksum bytes |
| if((crc1 == rxd_buffer[ptr_rxd_buffer-2]) && (crc2 == rxd_buffer[ptr_rxd_buffer-1])) |
| { // checksum valid |
| rxd_buffer[ptr_rxd_buffer] = '\r'; // set termination character |
| ReceivedBytes = ptr_rxd_buffer + 1;// store number of received bytes |
| rxd_buffer_locked = TRUE; // lock the rxd buffer |
| // if 2nd byte is an 'R' enable watchdog that will result in an reset |
| if(rxd_buffer[2] == 'R') {wdt_enable(WDTO_250MS);} // Reset-Commando |
| } |
| else |
| { // checksum invalid |
| rxd_buffer_locked = FALSE; // unlock rxd buffer |
| } |
| ptr_rxd_buffer = 0; // reset rxd buffer pointer |
| } |
| } |
| else // rxd buffer overrun |
| { |
| ptr_rxd_buffer = 0; // reset rxd buffer |
| rxd_buffer_locked = FALSE; // unlock rxd buffer |
| } |
| |
| } |
| |
| |
| // -------------------------------------------------------------------------- |
| void AddCRC(uint16_t datalen) |
| { |
| uint16_t tmpCRC = 0, i; |
| for(i = 0; i < datalen; i++) |
| { |
| tmpCRC += txd_buffer[i]; |
| } |
| tmpCRC %= 4096; |
| txd_buffer[i++] = '=' + tmpCRC / 64; |
| txd_buffer[i++] = '=' + tmpCRC % 64; |
| txd_buffer[i++] = '\r'; |
| txd_complete = FALSE; |
| UDR0 = txd_buffer[0]; // initiates the transmittion (continued in the TXD ISR) |
| } |
| |
| |
| |
| // -------------------------------------------------------------------------- |
| void SendOutData(uint8_t cmd, uint8_t addr, uint8_t numofbuffers, ...) // uint8_t *pdata, uint8_t len, ... |
| { |
| va_list ap; |
| uint16_t pt = 0; |
| uint8_t a,b,c; |
| uint8_t ptr = 0; |
| |
| uint8_t *pdata = 0; |
| int len = 0; |
| |
| txd_buffer[pt++] = '#'; // Start character |
| txd_buffer[pt++] = 'a' + addr; // Address (a=0; b=1,...) |
| txd_buffer[pt++] = cmd; // Command |
| |
| va_start(ap, numofbuffers); |
| if(numofbuffers) |
| { |
| pdata = va_arg(ap, uint8_t*); |
| len = va_arg(ap, int); |
| ptr = 0; |
| numofbuffers--; |
| } |
| |
| while(len) |
| { |
| if(len) |
| { |
| a = pdata[ptr++]; |
| len--; |
| if((!len) && numofbuffers) |
| { |
| pdata = va_arg(ap, uint8_t*); |
| len = va_arg(ap, int); |
| ptr = 0; |
| numofbuffers--; |
| } |
| } |
| else a = 0; |
| if(len) |
| { |
| b = pdata[ptr++]; |
| len--; |
| if((!len) && numofbuffers) |
| { |
| pdata = va_arg(ap, uint8_t*); |
| len = va_arg(ap, int); |
| ptr = 0; |
| numofbuffers--; |
| } |
| } |
| else b = 0; |
| if(len) |
| { |
| c = pdata[ptr++]; |
| len--; |
| if((!len) && numofbuffers) |
| { |
| pdata = va_arg(ap, uint8_t*); |
| len = va_arg(ap, int); |
| ptr = 0; |
| numofbuffers--; |
| } |
| } |
| else c = 0; |
| txd_buffer[pt++] = '=' + (a >> 2); |
| txd_buffer[pt++] = '=' + (((a & 0x03) << 4) | ((b & 0xf0) >> 4)); |
| txd_buffer[pt++] = '=' + (((b & 0x0f) << 2) | ((c & 0xc0) >> 6)); |
| txd_buffer[pt++] = '=' + ( c & 0x3f); |
| } |
| va_end(ap); |
| AddCRC(pt); // add checksum after data block and initates the transmission |
| } |
| |
| |
| // -------------------------------------------------------------------------- |
| void Decode64(void) |
| { |
| uint8_t a,b,c,d; |
| uint8_t x,y,z; |
| uint8_t ptrIn = 3; |
| uint8_t ptrOut = 3; |
| uint8_t len = ReceivedBytes - 6; |
| |
| while(len) |
| { |
| a = rxd_buffer[ptrIn++] - '='; |
| b = rxd_buffer[ptrIn++] - '='; |
| c = rxd_buffer[ptrIn++] - '='; |
| d = rxd_buffer[ptrIn++] - '='; |
| //if(ptrIn > ReceivedBytes - 3) break; |
| |
| x = (a << 2) | (b >> 4); |
| y = ((b & 0x0f) << 4) | (c >> 2); |
| z = ((c & 0x03) << 6) | d; |
| |
| if(len--) rxd_buffer[ptrOut++] = x; else break; |
| if(len--) rxd_buffer[ptrOut++] = y; else break; |
| if(len--) rxd_buffer[ptrOut++] = z; else break; |
| } |
| pRxData = &rxd_buffer[3]; |
| RxDataLen = ptrOut - 3; |
| } |
| |
| |
| // -------------------------------------------------------------------------- |
| void USART0_ProcessRxData(void) |
| { |
| // if data in the rxd buffer are not locked immediately return |
| if(!rxd_buffer_locked) return; |
| |
| Decode64(); // decode data block in rxd_buffer |
| |
| |
| switch(rxd_buffer[1] - 'a') |
| { |
| case FM_ADDRESS: |
| |
| switch(rxd_buffer[2]) |
| { |
| default: |
| //unsupported command received |
| break; |
| } // case FC_ADDRESS: |
| |
| default: // any Slave Address |
| |
| switch(rxd_buffer[2]) |
| { |
| case 'a':// request for labels of the analog debug outputs |
| Request_DebugLabel = pRxData[0]; |
| if(Request_DebugLabel > 31) Request_DebugLabel = 31; |
| PcAccess = 255; |
| break; |
| |
| case 'h':// request for display columns |
| PcAccess = 255; |
| RemoteKeys |= pRxData[0]; |
| if(RemoteKeys) DisplayLine = 0; |
| Request_Display = TRUE; |
| break; |
| |
| case 'l':// request for display columns |
| PcAccess = 255; |
| MenuItem = pRxData[0]; |
| Request_Display1 = TRUE; |
| break; |
| |
| case 'v': // request for version and board release |
| Request_VerInfo = TRUE; |
| break; |
| |
| case 'd': // request for the debug data |
| DebugData_Interval = (uint16_t) pRxData[0] * 10; |
| if(DebugData_Interval > 0) Request_DebugData = TRUE; |
| break; |
| |
| case 'g':// get external control data |
| Request_ExternalControl = TRUE; |
| break; |
| |
| default: |
| //unsupported command received |
| break; |
| } |
| break; // default: |
| } |
| // unlock the rxd buffer after processing |
| pRxData = 0; |
| RxDataLen = 0; |
| rxd_buffer_locked = FALSE; |
| } |
| |
| //############################################################################ |
| //Routine für die Serielle Ausgabe |
| int16_t uart_putchar (int8_t c) |
| //############################################################################ |
| { |
| if (c == '\n') |
| uart_putchar('\r'); |
| // wait until previous character was send |
| loop_until_bit_is_set(UCSR0A, UDRE0); |
| // send character |
| UDR0 = c; |
| return (0); |
| } |
| |
| |
| //--------------------------------------------------------------------------------------------- |
| void USART0_TransmitTxData(void) |
| { |
| if(!txd_complete) return; |
| |
| if(Request_VerInfo && txd_complete) |
| { |
| SendOutData('V', FM_ADDRESS, 1, (uint8_t *) &UART_VersionInfo, sizeof(UART_VersionInfo)); |
| Request_VerInfo = FALSE; |
| } |
| if(Request_Display && txd_complete) |
| { |
| LCD_PrintMenu(); |
| SendOutData('H', FM_ADDRESS, 2, &DisplayLine, sizeof(DisplayLine), &DisplayBuff[DisplayLine * 20], 20); |
| DisplayLine++; |
| if(DisplayLine >= 4) DisplayLine = 0; |
| Request_Display = FALSE; |
| } |
| if(Request_Display1 && txd_complete) |
| { |
| LCD_PrintMenu(); |
| SendOutData('L', FM_ADDRESS, 3, &MenuItem, sizeof(MenuItem), &MaxMenuItem, sizeof(MaxMenuItem), DisplayBuff, sizeof(DisplayBuff)); |
| Request_Display1 = FALSE; |
| } |
| if(Request_DebugLabel != 0xFF) // Texte für die Analogdaten |
| { |
| SendOutData('A', FM_ADDRESS, 2, (uint8_t *) &Request_DebugLabel, sizeof(Request_DebugLabel), ANALOG_LABEL[Request_DebugLabel], 16); |
| Request_DebugLabel = 0xFF; |
| } |
| if(Request_ExternalControl && txd_complete) |
| { |
| SendOutData('G', FM_ADDRESS, 1,(uint8_t *) &ExternControl, sizeof(ExternControl)); |
| Request_ExternalControl = FALSE; |
| } |
| if( ((DebugData_Interval && CheckDelay(DebugData_Timer)) || Request_DebugData) && txd_complete) |
| { |
| SendOutData('D', FM_ADDRESS, 1,(uint8_t *) &DebugOut, sizeof(DebugOut)); |
| DebugData_Timer = SetDelay(DebugData_Interval); |
| Request_DebugData = FALSE; |
| } |
| if(Request_SendFollowMe && txd_complete) |
| { |
| SendOutData('s', NC_ADDRESS, 1, (uint8_t *)&FollowMe, sizeof(FollowMe)); |
| FollowMe.Position.Status = PROCESSED; |
| Request_SendFollowMe = FALSE; |
| } |
| } |
| |