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109 lines
6.6 KiB
109 lines
6.6 KiB
#include "USART1.h"
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// USARTs common settings : Speed and Timeouts
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const uint16_t USART_UBRR[8] PROGMEM={ (F_CPU/8UL)/19200-1, (F_CPU/8UL)/500000-1,
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(F_CPU/8UL)/2400-1, (F_CPU/8UL)/9600-1,
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(F_CPU/8UL)/115200-1, (F_CPU/8UL)/250000-1,
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(F_CPU/8UL)/1000000-1, /*(F_CPU/8UL)/10000000-1*/ 0}; // Fosc=16MHz : 19.2k, 500k, 2.4k, 9.6k, 115.2k, 250k, 1M, 1M
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const uint16_t USART_TIMEOUT[8] PROGMEM={ (IDIBUS_19200B_INTERFRAME_TIMEOUT_US/8*16), (IDIBUS_500K_INTERFRAME_TIMEOUT_US/8*16),
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(IDIBUS_2400B_INTERFRAME_TIMEOUT_US/8*16), (IDIBUS_9600B_INTERFRAME_TIMEOUT_US/8*16),
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(IDIBUS_115200B_INTERFRAME_TIMEOUT_US/8*16), (IDIBUS_250K_INTERFRAME_TIMEOUT_US/8*16),
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(IDIBUS_1M_INTERFRAME_TIMEOUT_US/8*16), (IDIBUS_1M_INTERFRAME_TIMEOUT_US/8*16) };
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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ISR(USART1_TX_vect){
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if (USART1STR.TxSendedCount == USART1STR.TxBufCount){
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//UCSR1B &= ~((1<<TXCIE1)|(1<<TXEN1));
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UCSR1B=(1<<RXCIE1)|(1<<RXEN1);
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USART1STR.TxSendedCount = 0;
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USART1STR.TxBufCount = 0;
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USART1STR.TxComplete = 1;
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USART1_TX_DDR&=~(1<<USART1_TX_BIT); USART1_TX_PORT|=1<<USART1_TX_BIT; // TXD -> Z
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USART1_DRE_DDR&=~(1<<USART1_DRE_BIT); USART1_DRE_PORT&=~(1<<USART1_DRE_BIT); // RDE -> Z
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} else {
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UDR1=USART1_TX_BUF[USART1STR.TxSendedCount];
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USART1STR.TxSendedCount++;
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}
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}
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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ISR(USART1_RX_vect){
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//TIMSK3=0;
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TCNT3=0; // Timeout Timer3 On, clkI/O/8 (From prescaller)
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TCCR3B=2;
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TIMSK3=1<<OCIE3A;
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if (UCSR1A & ((1<<FE1) | (1<<DOR1)) )
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USART1STR.RxError = 1;
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if (USART1STR.RxBufCount < USART1_BUF_SIZE){
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USART1_RX_BUF[USART1STR.RxBufCount] = UDR1;
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USART1STR.RxBufCount++;
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}
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}
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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ISR(TIMER3_COMPA_vect) {
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TCCR3B=0; TCNT3=0; TIMSK3=0; // Timeout TIMER3 off
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UCSR1B &= ~((1<<RXCIE1)|(1<<RXEN1)); // RX off
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USART1STR.RxComplete = 1; // RX data ready
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}
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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void USART1_Init(void) {
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USART1STR.TxBufCount = 0;
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USART1STR.TxSendedCount = 0;
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USART1STR.RxBufCount = 0;
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USART1STR.RxComplete = 0;
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USART1STR.TxComplete = 1;
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USART1STR.InterFrameTimeoutTicks = 0;
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USART1_TX_DDR&=~(1<<USART1_TX_BIT); USART1_TX_PORT|=1<<USART1_TX_BIT; // TXD -> Z
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USART1_RX_DDR&=~(1<<USART1_RX_BIT); USART1_RX_PORT|=1<<USART1_RX_BIT; // RXD -> Z
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USART1_DRE_DDR&=~(1<<USART1_DRE_BIT); USART1_DRE_PORT&=~(1<<USART1_DRE_BIT); // RDE -> 0
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UCSR1A=(1<<U2X1);
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UCSR1B=(1<<RXCIE1)|(1<<RXEN1); // RX enable
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UCSR1C=(1<<UCSZ10)|(1<<UCSZ11)|(1<<USBS1); // 8 bit, 2 stop
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TCCR3B=0; TCNT3=0; TIMSK3=0; // Timeout TIMER3 off
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}
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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// uint8_t USART1_IsNewRxMessage(void) { return USART1STR.RxComplete; }
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////--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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// uint8_t USART1_IsRxError(void) { return USART1STR.RxError; }
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////--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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// uint16_t USART1_getRxBufSize(void) { return USART1STR.RxBufCount; }
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////--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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// uint8_t *USART1_getRxBuf(void) { return &USART1STR.RX_BUF[0]; }
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////--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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// uint8_t *USART1_getTxBuf(void) { return &USART1STR.TX_BUF[0]; }
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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void USART1_copyRxBuf(uint8_t *Dst, uint16_t StartPos, uint16_t Count) { _memcopy(&USART1_RX_BUF[StartPos], Dst,Count); }
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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uint8_t USART1_IsTxActive(void){
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if (USART1STR.TxComplete) return 0;
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else return 1;
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}
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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void USART1_SetIdiBusBoudrate(enum IDIBUS_SERIAL_BAUDRATE BoudrateCode){
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UBRR1 = flash_read_word((USART_UBRR) ,(BoudrateCode<<1));
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USART1STR.InterFrameTimeoutTicks = flash_read_word((USART_TIMEOUT) ,(BoudrateCode << 1));
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OCR3A = USART1STR.InterFrameTimeoutTicks;
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}
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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void USART1_SendTxBuf(uint16_t Count){
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if ( (!USART1STR.TxComplete) || (Count == 0) || (Count > USART1_BUF_SIZE) ) { return; }
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USART1_TX_DDR|=1<<USART1_TX_BIT; USART1_TX_PORT|=1<<USART1_TX_BIT; // TXD -> out
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USART1_DRE_DDR|=1<<USART1_DRE_BIT; USART1_DRE_PORT|=1<<USART1_DRE_BIT;
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USART1STR.TxComplete = 0;
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USART1STR.TxBufCount = Count;
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USART1STR.TxSendedCount = 1;
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//UCSR1B &= ~((1<<RXCIE1)|(1<<RXEN1)); // RX off
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UCSR1B=(1<<TXCIE1)|(1<<TXEN1);
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UDR1 = USART1_TX_BUF[0];
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}
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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void USART1_RxTransferRestart(void){
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UCSR1B|=(1<<RXCIE1)|(1<<RXEN1);
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USART1STR.RxBufCount = 0;
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USART1STR.RxComplete = 0;
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USART1STR.RxError = 0;
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}
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//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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