Diff: DeviceUserPort.c

Revision:

198:78dd6d14d108

Parent:

197:7a05523bf588

--- a/DeviceUserPort.c	Wed Oct 19 10:55:05 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,226 +0,0 @@
-#include "Device.h"
-
-extern Device device;
-extern unsigned int SystemCoreClock1;
-
-void InitUserPortDefaultSettings(void) {
-  device.user.port.settings.mode = 0;     //Baud rate usage: 0 - accept baud rate change; 1 - always 921600
-  device.user.port.settings.baud = 38400;
-}
-
-void InitUserPortState(void) {
-  device.user.port.state.mode = device.user.port.settings.mode;
-  device.user.port.state.baud = userSelectBaudRate(device.user.port.settings.baud);
-}
-
-void DeviceStartUserPort(void)
-{ 
-  LPC_PINCON->PINSEL4 &= ~0x0000000F;
-  LPC_PINCON->PINSEL4 |= 0x0000000A;  //Enable RxD1 P2.1, TxD1 P2.0
-  
-  userSetBaudRate(device.user.port.state.baud);
-  
-  device.controller.uart[1].state.FCR = 0x03;
-  LPC_UART1->FCR = device.controller.uart[1].state.FCR; //Enable and reset TX and RX FIFO.
-
-  /*
-  //Uncomment to use interrupts
-  //NVIC_EnableIRQ(UART1_IRQn);
-  //LPC_UART1->IER = IER_RBR | IER_THRE | IER_RLS;  //Enable UART1 interrupt
-  */
-}
-
-uint32_t userSelectBaudRate(uint32_t baud) {
-  if (device.user.port.state.mode == 1)
-    return 921600;
-  else
-    return baud;
-}
-
-void userSetBaudRate(uint32_t baud) {
-  baud = userSelectBaudRate(baud);
-  //Peripheral clock of UART1
-  uint32_t pclkdiv = (LPC_SC->PCLKSEL0 >> 8) & 0x03;    //Bits 8,9 are for UART1
-  uint32_t pclk;
-  switch ( pclkdiv ) {
-      case 0x00:
-      default:
-        pclk = SystemCoreClock1/4;
-        break;
-      case 0x01:
-        pclk = SystemCoreClock1;
-        break; 
-      case 0x02:
-        pclk = SystemCoreClock1/2;
-        break; 
-      case 0x03:
-        pclk = SystemCoreClock1/8;
-        break;
-  }  
-  //Divider
-  uint32_t Fdiv = ( pclk / 16 ) / baud;
-  //Enable divider write
-  device.controller.uart[1].state.LCR = 0x83;
-  LPC_UART1->LCR = device.controller.uart[1].state.LCR; //8 bits, no Parity, 1 Stop bit
-  //Write divider hi byte
-  device.controller.uart[1].state.DLM = Fdiv / 256;
-  LPC_UART1->DLM = device.controller.uart[1].state.DLM;
-  //Write divider lo byte
-  device.controller.uart[1].state.DLL = Fdiv % 256;
-  LPC_UART1->DLL = device.controller.uart[1].state.DLL;
-  //Disable divider write
-  device.controller.uart[1].state.LCR = 0x03;
-  LPC_UART1->LCR = device.controller.uart[1].state.LCR; //DLAB = 0
-  
-  device.user.port.state.baud = baud;
-  
-  #ifdef DEBUG_USER_BAUD
-  sprintf(device.service.buffer, "userSetBaudRate(%06d)\r\n", baud); WriteConcole();
-  #endif
-}
-
-void userReceive(void){
-  if (LPC_UART1->LSR & 0x01) {
-    device.user.request.buffer.data[device.user.request.buffer.end] = LPC_UART1->RBR;
-    device.user.request.buffer.end = (device.user.request.buffer.end + 1) % InputBufferSize;
-    device.user.request.buffer.empty = 0;
-    device.user.decoder.canceled = 0; //Clear decode canceled flag
-  }
-}
-
-void userTransmit(void){
-  if (device.user.response.ready) {
-    if (device.user.response.type == RESPONSE_DELAYED) {
-      if (!device.user.response.triggered) return;     
-    }
-    
-    if (device.user.response.buffer.position < device.user.response.buffer.count) {
-      if (LPC_UART1->LSR & 0x20) {
-        LPC_UART1->THR = device.user.response.buffer.data[device.user.response.buffer.position];
-        device.user.response.buffer.position++;
-        if (device.user.response.buffer.position == device.user.response.buffer.count){
-          device.user.response.ready = 0;
-          if (device.user.response.type == RESPONSE_PERIODIC) {
-            device.user.response.enabled = 1; //next response encoding required
-          }
-          if (device.user.response.type == RESPONSE_DELAYED) {
-            device.user.response.triggered = 0; //Clear transmission flag, wait next trigger event. Here ok - transmit response in multiple passes!
-          }
-          device.user.response.buffer.count = 0;
-          device.user.response.buffer.position = 0;
-        }
-      }
-    }
-  }
-}
-
-//
-//Compatibility section
-//
-uint8_t var_SRgR(void) {
-  //SysRgR
-  //    Unused 3 bits: => xxxxx000
-  //    Hardware: transmitter rate = receiver rate => xxxx1000
-  //    Sending response, so transmitter enabled, no case => 1xxx1000
-  //    Request received, so receiver enabled, no case => 11xx1000
-  uint8_t res;
-  switch (device.user.port.state.baud) {
-    case  38400: res = 0xc8; break; //11001000
-    case 115200: res = 0xd8; break; //11011000
-    case 460800: res = 0xe8; break; //11101000
-    case 921600: res = 0xf8; break; //11111000
-    default:     res = 0xc8;        //11001000 - 38400
-  }
-  return res;
-}
-
-//
-//Not used section
-//  Communication using interrupt
-/*
-#define IER_RBR     0x01
-#define IER_THRE    0x02
-#define IER_RLS     0x04
-
-#define IIR_PEND    0x01
-#define IIR_RLS     0x03
-#define IIR_RDA     0x02
-#define IIR_CTI     0x06
-#define IIR_THRE    0x01
-
-#define LSR_RDR     0x01
-#define LSR_OE      0x02
-#define LSR_PE      0x04
-#define LSR_FE      0x08
-#define LSR_BI      0x10
-#define LSR_THRE    0x20
-#define LSR_TEMT    0x40
-#define LSR_RXFE    0x80
-
-void UART1Send(void)
-{
-  uint8_t pos = 0;
-  while (device.host.response.buffer.count != pos ) {
-    //THRE status, contain valid data
-    while ( !(device.host.port.TxEmpty & 0x01) ); 
-    LPC_UART1->THR = device.host.response.buffer.data[pos];
-    device.host.port.TxEmpty = 0; //not empty in the THR until it shifts out
-    pos++;
-  }
-  device.host.response.buffer.count = 0;
-}
-
-//Not used 
-__irq void UART1_IRQHandler (void)
-{
-  uint8_t IIRValue, LSRValue;
-  uint8_t Dummy = Dummy;
-    
-  IIRValue = LPC_UART1->IIR;
-    
-  IIRValue >>= 1;            //skip pending bit in IIR
-  IIRValue &= 0x07;          //check bit 1~3, interrupt identification
-  if ( IIRValue == IIR_RLS ) // Receive Line Status
-  {
-    LSRValue = LPC_UART1->LSR;
-    //Receive Line Status
-    if ( LSRValue & (LSR_OE|LSR_PE|LSR_FE|LSR_RXFE|LSR_BI) )
-    {
-      //There are errors or break interrupt
-      //Read LSR will clear the interrupt
-      device.host.port.status = LSRValue;
-      Dummy = LPC_UART1->RBR;//Dummy read on RX to clear interrupt, then bail out
-      return;
-    }
-    if ( LSRValue & LSR_RDR )//Receive Data Ready
-    {
-      //If no error on RLS, normal ready, save into the data buffer.
-      //Note: read RBR will clear the interrupt
-      device.host.request.buffer.data[device.host.request.buffer.end] = LPC_UART1->RBR;
-      device.host.request.buffer.end = (device.host.request.buffer.end + 1) % InputBufferSize;
-    }
-  }
-  else if ( IIRValue == IIR_RDA )   //Receive Data Available
-  {
-    device.host.request.buffer.data[device.host.request.buffer.end] = LPC_UART1->RBR;
-    device.host.request.buffer.end = (device.host.request.buffer.end + 1) % InputBufferSize;
-  }
-  else if ( IIRValue == IIR_CTI )   //Character timeout indicator
-  {
-    //Character Time-out indicator
-    device.host.port.status |= 0x100; //Bit 9 as the CTI error
-  }
-  else if ( IIRValue == IIR_THRE )    //THRE, transmit holding register empty
-  {
-    //THRE interrupt
-    LSRValue = LPC_UART1->LSR;        //Check status in the LSR to see if valid data in U0THR or not
-    if ( LSRValue & LSR_THRE )
-    {
-      device.host.port.TxEmpty = 1;
-    }
-    else
-    {
-      device.host.port.TxEmpty = 0;
-    }
-  }
-}*/
\ No newline at end of file