/*---------------------------------------------------------------------------- Serial Device "LPC17xx" initialize *----------------------------------------------------------------------------*/ static int UartDev_Init (void) { int i; if (UARTInfo.State != _STATE_UNKNOWN_) { return (-1); /* Device initialized */ } ConfigureUart (&UART_DEV.Cfg); ConfigurePins (); /* Re-configure the UART pins */ __BUF_RESET(BufTx); /* reset transmit buffer */ __BUF_RESET(BufRx); /* reset receive buffer */ TxRestart = 1; UARTInfo.State = _STATE_INITIALIZED_; UART_TxCmd (UARTInfo.pUart, ENABLE); /* TX, RX enable */ for (i = 0; i < 800; i++); /* eleminate schmierzeichen */ /* Setting up callback function for UART driver */ // Receive callback UART_SetupCbs(UARTInfo.pUart, 0, (void *)UartRxCallBack); // Transmit callback UART_SetupCbs(UARTInfo.pUart, 1, (void *)UartTxCallBack); /* Enable Rx Interrrupt in UART peripheral */ UART_IntConfig(UARTInfo.pUart, UART_INTCFG_RBR, ENABLE); /* preemption = 1, sub-priority = 1 */ NVIC_SetPriority(UARTInfo.UARTIRQn, ((0x01<<3)|0x01)); NVIC_EnableIRQ(UARTInfo.UARTIRQn); /* enable Interrupt */ return(0); /* success */ }
void dcr_SerialDriver(UART_DRIVER_INFO* drv_info, unsigned int reason, HANDLE hnd) { UART_Type * Uart = drv_info->hw_base; UART_DRIVER_DATA *drv_data = drv_info->drv_data; switch(reason) { case DCR_ISR: TX_CTS(drv_data, Uart, (unsigned int)hnd); return; case DCR_RESET: SysCtlPeripheralReset(drv_info->info.peripheral_indx); SysCtlPeripheralDisable(drv_info->info.peripheral_indx); // ??? turn off return; case DCR_OPEN: { UART_DRIVER_MODE *uart_mode = (UART_DRIVER_MODE *)(hnd->mode.as_voidptr); if(uart_mode) { //unsigned long mode, baudrate; if(drv_data->cnt) { if( uart_mode->mode != drv_data->mode.mode || uart_mode->baudrate != drv_data->mode.baudrate || uart_mode->hw_flow != drv_data->mode.hw_flow ) { return; } } else { // Enable AND Reset the UART peripheral SysCtlPeripheralReset(drv_info->info.peripheral_indx); if(drv_data->mode.hw_flow) { PIO_Cfg_List((PIN_DESC *)&drv_info->uart_pins[UART_LIST_ALL_PINS]); ConfigureUart(drv_info, drv_data, uart_mode); #ifdef HW_VER_10 if(drv_info->info.drv_index != UART1_IRQn) TX_CTS(drv_data, Uart, PIO_Read(drv_info->uart_pins[CTS_PIN])); #endif } else { PIO_Cfg_List((PIN_DESC *)&drv_info->uart_pins[UART_LIST_RX_TX_PINS]); ConfigureUart(drv_info, drv_data, uart_mode); } START_RX_BUF(Uart, drv_info, drv_data); } drv_data->cnt++; hnd->res = RES_OK; } return; } case DCR_CLOSE: if(drv_data->cnt) drv_data->cnt--; case DCR_CANCEL: { if( !(hnd->res & FLG_BUSY)) return; if (hnd->cmd & FLAG_READ) { if(hnd == drv_data->hnd_rcv) { STOP_RX(Uart); if(hnd->len > drv_data->rx_remaining || hnd->mode0 ) { hnd->len = drv_data->rx_remaining; hnd->res = RES_SIG_OK; } else hnd->res = RES_SIG_IDLE; drv_data->hnd_rcv = hnd->next; svc_HND_SET_STATUS(hnd, hnd->res); if( (hnd=drv_data->hnd_rcv) ) START_RX_HND(Uart, drv_info, hnd); else START_RX_BUF(Uart, drv_info, drv_data); } else { // try cnacel hnd->svc_list_cancel(drv_data->hnd_rcv); } } else { if(hnd == drv_data->hnd_snd) { STOP_TX(Uart); drv_data->hnd_snd = hnd->next; svc_HND_SET_STATUS(hnd, RES_SIG_IDLE); if( (hnd=drv_data->hnd_snd) ) START_TX_HND(Uart, hnd); } else { hnd->svc_list_cancel(drv_data->hnd_snd); } } if(!drv_data->cnt) { NVIC->NVIC_DisableIRQ(drv_info->info.drv_index); Uart->UARTDisable(); STOP_RX(Uart); STOP_TX(Uart); SysCtlPeripheralDisable(drv_info->info.peripheral_indx); SYSCTL->SysCtlPeripheralDeepSleepDisable(drv_info->info.peripheral_indx); SYSCTL->SysCtlPeripheralSleepDisable(drv_info->info.peripheral_indx); if(drv_data->mode.hw_flow) PIO_Free_List((PIN_DESC *)&drv_info->uart_pins[UART_LIST_ALL_PINS]); else PIO_Free_List((PIN_DESC *)&drv_info->uart_pins[UART_LIST_RX_TX_PINS]); } return; } case DCR_CLOCK: return; } }