/*----------------------------------------------------------------------------
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;
}
}
