void uart0_init(unsigned long br) { vAHI_UartSetRTSCTS(E_AHI_UART_0, false); vAHI_UartEnable(E_AHI_UART_0); vAHI_UartReset(E_AHI_UART_0, true, true); uart0_set_br(br); vAHI_UartSetRTSCTS(E_AHI_UART_0, false); vAHI_Uart0RegisterCallback(irq); vAHI_UartSetInterrupt(E_AHI_UART_0, false, /* modem status */ false, /* rx line error status */ false, /* tx fifo empty */ true, /* rx data there */ E_AHI_UART_FIFO_LEVEL_1); vAHI_UartSetRTSCTS(E_AHI_UART_0, false); vAHI_UartReset(E_AHI_UART_0, false, false); }
/**************************************************************************** * * NAME: vUART_Init * * DESCRIPTION: * * PARAMETERS: Name RW Usage * None. * * RETURNS: * None. * * NOTES: * None. ****************************************************************************/ PUBLIC bool_t vUART_Init(uint8 u8Uart, /**< Uart to open */ uint32 u32BaudRate, /**< Baud rate */ bool_t bEvenParity, /**< Even parity */ bool_t bEnableParity, /**< Enable parity */ uint8 u8WordLength, /**< Word length, one of:\n E_AHI_UART_WORD_LEN_5\n E_AHI_UART_WORD_LEN_6\n E_AHI_UART_WORD_LEN_7\n E_AHI_UART_WORD_LEN_8 */ bool_t bOneStopBit) /**< One stop bit */ { uint16 u16Divisor; /* Baud rate divisor */ uint32 u32Remainder; /* Baud rate remainder */ /* Valid uart ? */ if (u8Uart < 2) { /* Calculate divisor for baud rate = 16MHz / (16 x baud rate) */ u16Divisor = (uint16)(16000000UL / (16UL * u32BaudRate)); /* Correct for rounding errors */ u32Remainder = (uint32)(16000000UL % (16UL * u32BaudRate)); if (u32Remainder >= ((16UL * u32BaudRate) / 2)) u16Divisor += 1; /* Start with port unopened */ Uart_Opened[u8Uart]= FALSE; vAHI_UartSetRTSCTS(u8Uart, FALSE); /* Enable UART 0 */ vAHI_UartEnable(u8Uart); vAHI_UartReset(u8Uart, TRUE, TRUE); vAHI_UartReset(u8Uart, FALSE, FALSE); Uart_Opened[u8Uart]= TRUE; #if !UART_JENOS { /* Register function that will handle UART interrupts */ if (u8Uart == E_AHI_UART_0) vAHI_Uart0RegisterCallback(UART_vInterrupt); if (u8Uart == E_AHI_UART_1) vAHI_Uart1RegisterCallback(UART_vInterrupt); } #endif /* Set baud rate */ vAHI_UartSetBaudDivisor(u8Uart, u16Divisor); /* Set control */ vAHI_UartSetControl(u8Uart, bEvenParity, bEnableParity, u8WordLength, bOneStopBit, FALSE); /* Set UART interrupts */ vAHI_UartSetInterrupt(u8Uart, FALSE, /* ModemStatus */ FALSE, /* RxLineStatus */ TRUE, /* TxFifoEmpty */ TRUE, /* RxData */ E_AHI_UART_FIFO_LEVEL_1); return TRUE; } return FALSE; }