📄 d_hispeed.r
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//
// Date init 14.12.2004
//
// Revision date $Date:: 16-05-06 12:13 $
//
// Filename $Workfile:: d_hispeed.r $
//
// Version $Revision:: 11 $
//
// Archive $Archive:: /LMS2006/Sys01/Main/Firmware/Source/d_hispeed. $
//
// Platform C
//
#ifdef SAM7S256
#if defined (PROTOTYPE_PCB_3) || (PROTOTYPE_PCB_4)
#define HIGHSPEED_RX_PIN AT91C_PIO_PA5
#define HIGHSPEED_TX_PIN AT91C_PIO_PA6
#define HIGHSPEED_RTS_PIN AT91C_PIO_PA7
#else
#endif
#define PER_ID6_UART_0 0x40
#define UART0_INQ 0x40
#define BAUD_RATE 921600L
#define SIZE_OF_INBUF 128
#define NO_OF_INBUFFERS 2
#define SIZE_OF_OUTBUF 128
#define NO_OF_DMA_OUTBUFFERS 1
static UBYTE InBuf[NO_OF_INBUFFERS][SIZE_OF_INBUF];
static ULONG InBufPtrs[NO_OF_INBUFFERS];
static UBYTE InBufInPtr;
static UBYTE OutDma[NO_OF_DMA_OUTBUFFERS][SIZE_OF_OUTBUF];
static UBYTE DmaBufPtr;
static UBYTE *pBuffer;
static UBYTE MsgIn;
static UBYTE InBufOutCnt;
#define HIGHSPEEDInit {\
*AT91C_PIOA_PER = HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN | HIGHSPEED_RX_PIN; /* Enable PIO on PA07, PA06 & PA05 */\
*AT91C_PIOA_PPUDR = HIGHSPEED_RX_PIN | HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN; /* Disable Pull-up resistor */\
*AT91C_PIOA_OER = HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN | HIGHSPEED_RX_PIN; /* PA07 & PA06 set to Output */\
*AT91C_PIOA_CODR = HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN | HIGHSPEED_RX_PIN; /* Set output low */\
}
#define HIGHSPEEDSetupUart {\
UBYTE Tmp;\
InBufInPtr = 0;\
for(Tmp = 0; Tmp < NO_OF_INBUFFERS; Tmp++)\
{\
InBufPtrs[Tmp] = (ULONG)&(InBuf[Tmp][0]);\
}\
*AT91C_PMC_PCER = PER_ID6_UART_0; /* Enable PMC clock for UART 0 */\
*AT91C_PIOA_PPUDR = HIGHSPEED_RX_PIN | HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN; /* Disable Pull-up resistor */\
*AT91C_PIOA_PDR = HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN | HIGHSPEED_RX_PIN; /* Disable Per. A on PA5, PA6 & PA7 */\
*AT91C_PIOA_ASR = HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN | HIGHSPEED_RX_PIN;; /* Enable Per. A on PA5, PA6 & PA7 */\
*AT91C_US0_CR = AT91C_US_RSTSTA; /* Resets pins on UART0 */\
*AT91C_US0_CR = AT91C_US_STTTO; /* Start timeout functionality after 1 byte */\
*AT91C_US0_RTOR = 2400; /* Approxitely 20 mS,x times bit time with 115200 bit pr s */\
*AT91C_US0_IDR = AT91C_US_TIMEOUT; /* Disable interrupt on timeout */\
*AT91C_AIC_IDCR = UART0_INQ; /* Disable UART0 interrupt */\
*AT91C_AIC_ICCR = UART0_INQ; /* Clear interrupt register */\
*AT91C_US0_MR = AT91C_US_USMODE_RS485; /* Set UART to RUN RS485 Mode*/\
*AT91C_US0_MR &= ~AT91C_US_SYNC; /* Set UART in asynchronous mode */\
*AT91C_US0_MR |= AT91C_US_CLKS_CLOCK; /* Clock setup MCK*/\
*AT91C_US0_MR |= AT91C_US_CHRL_8_BITS; /* UART using 8-bit */\
*AT91C_US0_MR |= AT91C_US_PAR_NONE; /* UART using none parity bit */\
*AT91C_US0_MR |= AT91C_US_NBSTOP_1_BIT; /* UART using 1 stop bit */\
*AT91C_US0_MR |= AT91C_US_OVER; /* UART is using 8-bit sampling */\
*AT91C_US0_BRGR = ((OSC/8/BAUD_RATE) | (((OSC/8) - ((OSC/8/BAUD_RATE) * BAUD_RATE)) / ((BAUD_RATE + 4)/8)) << 16);\
*AT91C_US0_PTCR = (AT91C_PDC_RXTDIS | AT91C_PDC_TXTDIS); /* Disable of TX & RX with DMA */\
*AT91C_US0_RCR = 0; /* Receive Counter Register */\
*AT91C_US0_TCR = 0; /* Transmit Counter Register */\
*AT91C_US0_RNPR = 0;\
*AT91C_US0_TNPR = 0;\
Tmp = *AT91C_US0_RHR;\
Tmp = *AT91C_US0_CSR;\
*AT91C_US0_RPR = (unsigned int)&(InBuf[InBufInPtr][0]); /* Initialise receiver buffer using DMA */\
*AT91C_US0_RCR = SIZE_OF_INBUF;\
*AT91C_US0_RNPR = (unsigned int)&(InBuf[(InBufInPtr + 1)%NO_OF_INBUFFERS][0]);\
*AT91C_US0_RNCR = SIZE_OF_INBUF;\
MsgIn = 0;\
InBufOutCnt = 0;\
*AT91C_US0_CR = AT91C_US_RXEN | AT91C_US_TXEN; /* Enable Tx & Rx on UART 0*/\
*AT91C_US0_PTCR = (AT91C_PDC_RXTEN | AT91C_PDC_TXTEN); /* Enable of TX & RX with DMA */\
}
#define HIGHSPEEDInitReceiver(InputBuffer)\
{\
UBYTE Tmp;\
pBuffer = InputBuffer;\
*AT91C_US0_PTCR = (AT91C_PDC_RXTDIS | AT91C_PDC_TXTDIS); /* Disable of TX & RX with DMA */\
*AT91C_US0_RCR = 0; /* Receive Counter Register */\
*AT91C_US0_TCR = 0; /* Transmit Counter Register */\
*AT91C_US0_RNPR = 0;\
*AT91C_US0_TNPR = 0;\
Tmp = *AT91C_US0_RHR;\
Tmp = *AT91C_US0_CSR;\
Tmp = Tmp;\
*AT91C_US0_RPR = (unsigned int)&(InBuf[InBufInPtr][0]); /* Initialise receiver buffer using DMA */\
*AT91C_US0_RCR = SIZE_OF_INBUF;\
*AT91C_US0_RNPR = (unsigned int)&(InBuf[(InBufInPtr + 1)%NO_OF_INBUFFERS][0]);\
*AT91C_US0_RNCR = SIZE_OF_INBUF;\
MsgIn = 0;\
InBufOutCnt = 0;\
*AT91C_US0_CR = AT91C_US_RXEN | AT91C_US_TXEN; /* Enable Tx & Rx on UART 0*/\
*AT91C_US0_PTCR = (AT91C_PDC_RXTEN | AT91C_PDC_TXTEN); /* Enable of TX & RX with DMA */\
}
#define HIGHSPEEDReceivedData(pByteCnt)\
{\
UWORD InCnt;\
*pByteCnt = 0;\
InCnt = (SIZE_OF_INBUF - *AT91C_US0_RCR);\
if (*AT91C_US0_RNCR == 0)\
{\
InCnt = SIZE_OF_INBUF;\
}\
InCnt -= InBufOutCnt; /* Remove already read bytes */\
if(InCnt)\
{\
while(InCnt > 0)\
{\
pBuffer[MsgIn] = InBuf[InBufInPtr][InBufOutCnt];\
MsgIn++;\
InBufOutCnt++;\
InCnt--;\
}\
*pByteCnt = MsgIn;\
MsgIn = 0;\
}\
if ((*AT91C_US0_RNCR == 0) && (SIZE_OF_INBUF == InBufOutCnt))\
{\
InBufOutCnt = 0;\
*AT91C_US0_RNPR = (unsigned int)InBufPtrs[InBufInPtr];\
*AT91C_US0_RNCR = SIZE_OF_INBUF;\
InBufInPtr = (InBufInPtr + 1) % NO_OF_INBUFFERS;\
}\
}
#define AVAILOutBuf(Avail) if (!(*AT91C_US0_TNCR))\
{\
Avail = SIZE_OF_OUTBUF;\
}\
else\
{\
Avail = 0;\
}
#define HIGHSPEEDSendDmaData(OutputBuffer, BytesToSend)\
{\
UWORD Avail, Cnt;\
AVAILOutBuf(Avail);\
if (BytesToSend < (Avail - 1))\
{\
for (Cnt = 0; Cnt < BytesToSend; Cnt++)\
{\
OutDma[DmaBufPtr][Cnt] = OutputBuffer[Cnt];\
}\
*AT91C_US0_TNPR = (unsigned int)&(OutDma[DmaBufPtr][0]);\
*AT91C_US0_TNCR = BytesToSend;\
DmaBufPtr = (DmaBufPtr + 1) % NO_OF_DMA_OUTBUFFERS;\
}\
}
#define HIGHSPEEDExit {\
*AT91C_PMC_PCDR = PER_ID6_UART_0; /* Disable PMC clock for UART 0*/\
*AT91C_PIOA_PER = HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN | HIGHSPEED_RX_PIN; /* Enable PIO on PA07, PA06 & PA05 */\
*AT91C_PIOA_PPUDR = HIGHSPEED_RX_PIN | HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN; /* Disable Pull-up resistor */\
*AT91C_PIOA_OER = HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN | HIGHSPEED_RX_PIN; /* PA07 & PA06 set to Output */\
*AT91C_PIOA_CODR = HIGHSPEED_TX_PIN | HIGHSPEED_RTS_PIN | HIGHSPEED_RX_PIN; /* Set output low */\
}
#endif
#ifdef PCWIN
#endif
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