--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/drivers/drv_app/sim/sim32.c	Fri Oct 16 06:23:26 2020 +0000
@@ -0,0 +1,321 @@
+/*
+ * SIM32.C
+ *
+ * Pole Star SIM
+ *
+ * Target : ARM
+ *
+ * Copyright (c) Texas Instruments 1995
+ *
+ */
+
+#define SIM32_C   1
+
+#include "chipset.cfg"
+
+#include "main/sys_types.h"
+#include <assert.h>
+#include "inth/iq.h" 
+#include "sim.h"
+
+
+#ifdef SIM_DEBUG_TRACE
+/* working buffer for NULL BYTE */
+extern SYS_UWORD8  SIM_dbg_null[];
+/* Nucleus variable given the current number of TDMA frames */
+extern SYS_UWORD32 IQ_FrameCount;
+/* working variable to calculate the TDMA ecart */
+extern SYS_UWORD16 SIM_dbg_tdma_diff;
+/* working variable storing the current number of TDMA frames elapsed */
+SYS_UWORD32 SIM_dbg_local_count;
+#endif
+
+/*
+ * SIM_IntHandler
+ *
+ * Read cause of SIM interrupt : 
+ * 
+ * if receive buffer full, read char
+ * if transmitter empty, change direction, transmit a dummy char
+ *
+ */
+void SIM_IntHandler(void)
+{
+   volatile unsigned short it, i, stat, conf1;
+   volatile SYS_UWORD8 ins; 
+   volatile SYS_UWORD8 rx;
+   volatile SYS_UWORD8 nack;
+   volatile SYS_UWORD8 nack1;
+
+   
+   SIM_PORT *p;
+
+   p = &(Sim[0]);
+
+   p->rxParityErr = 0;   
+   it = p->c->it;
+
+   if ((it & SIM_IT_ITRX) && !(p->c->maskit & SIM_MASK_RX)) // int on reception
+   {
+      stat = p->c->rx;
+      conf1 = p->conf1;
+
+#ifdef SIM_DEBUG_TRACE
+      if ((IQ_FrameCount - SIM_dbg_local_count) > SIM_dbg_tdma_diff) {
+	     SIM_dbg_tdma_diff = IQ_FrameCount - SIM_dbg_local_count;
+	  }
+      SIM_dbg_local_count = IQ_FrameCount;
+#endif
+
+          // Check if reception parity is enable
+      if (((conf1 & SIM_CONF1_CHKPAR) && ((stat & SIM_DRX_STATRXPAR) != 0))\
+       || ((conf1 & SIM_CONF1_CHKPAR) == 0))
+      {
+          rx    = (SYS_UWORD8) (stat & 0x00FF);
+          ins   = p->xbuf[1] & p->hw_mask;
+          nack  = (~p->xbuf[1]) & p->hw_mask;
+            
+          switch (p->moderx)
+          {
+              case 0:                  //mode of normal reception without proc char (like PTS proc)
+                  p->rbuf[p->rx_index++] = rx;
+                  break;      
+
+              case 1:                  //mode wait for ACK
+                  if ((rx & p->hw_mask) == ins)
+                  {
+                      p->moderx = 2;
+                  }  
+                  else if ((rx & p->hw_mask) == nack)
+                  {
+                      p->moderx = 4;          
+                  }
+                  else if (((rx & 0xF0) == 0x60) || ((rx & 0xF0) == 0x90))
+                  {
+                      if (rx != 0x60)     //in case of error code (SW1/SW2) returned by sim card
+                      {
+                          p->rSW12[p->SWcount++] = rx;
+                          p->moderx = 5;
+                      }
+                      else
+                      {
+                          p->null_received = 1;
+#ifdef SIM_DEBUG_TRACE
+			  SIM_dbg_null[0]++;
+#endif
+                      }
+                  }
+                  else
+                  {
+                    p->errorSIM = SIM_ERR_ABNORMAL_CASE2;
+                  }  
+                                        //if rx = 0x60 wait for ACK
+                  break;      
+
+              case 2:                  //mode reception by block
+                  p->rbuf[p->rx_index++] = rx;
+
+                  if(p->expected_data == 256)
+                  {
+                      if (p->rx_index == 0)
+                      {
+                          p->moderx = 5;
+                      }
+                  }	
+                  else
+                  {  
+                  if (p->rx_index == p->expected_data)
+                  {
+                      p->moderx = 5;
+                  }
+                  }
+                  break;      
+  
+              case 3:                  //mode reception char by char. reception of proc char
+                  if ((rx & p->hw_mask) == ins)
+                  {
+                      p->moderx = 2;
+                  }            
+                  else if ((rx & p->hw_mask) == nack)
+                  {
+                      p->moderx = 4;          
+                  }                      //if rx = 0x60 wait for ACK  
+                  else if (rx == 0x60)
+                  {
+                      p->null_received == 1;
+#ifdef SIM_DEBUG_TRACE
+		      SIM_dbg_null[1]++;
+#endif
+                  }  
+                    
+                  break;
+
+              case 4:                  //mode reception char by char. reception of data
+                  p->rbuf[p->rx_index++] = rx;
+                  p->moderx = 3;        //switch to receive proc char mode      
+
+                  if(p->expected_data == 256)
+                  {
+                      if (p->rx_index == 0)
+                      {
+                          p->moderx = 5;
+                      }
+                  }
+                  else
+                  {  
+                  if (p->rx_index == p->expected_data)
+                  {
+                      p->moderx = 5;
+                  }
+                  }
+                  break;
+              
+              case 5:                  //mode wait for procedure character except NULL
+                  if ((rx != 0x60) || (p->SWcount != 0))  //treat NULL character only if arriving before SW1 SW2
+                  {
+                      p->rSW12[p->SWcount++] = rx;
+                  }
+                  else
+                  {
+                      p->null_received = 1;
+#ifdef SIM_DEBUG_TRACE
+		      SIM_dbg_null[2]++;
+#endif
+                  }
+
+
+                  break;
+                  
+              case 6:                  //give the acknowledge char
+                  if (((rx & 0xF0) == 0x60) || ((rx & 0xF0) == 0x90))
+                  {
+                      if (rx != 0x60)       //in case of error code (SW1/SW2) returned by sim card
+                      {
+                          p->rSW12[p->SWcount++] = rx;
+                          p->moderx = 5;
+                      }
+                      else
+                      {
+                          p->null_received = 1;
+#ifdef SIM_DEBUG_TRACE
+		          SIM_dbg_null[3]++;
+#endif
+                      }
+                  }
+                  else
+                  {                     
+                     p->ack = rx;
+                  }
+          }
+      }
+      else
+      {
+        p->rxParityErr = 1;
+      }
+   }
+
+   if ((it & SIM_IT_ITTX) && !(p->c->maskit & SIM_MASK_TX))
+   {
+#ifdef SIM_DEBUG_TRACE
+      SIM_dbg_local_count = IQ_FrameCount;
+#endif
+      // check the transmit parity
+      stat = p->c->stat;
+
+
+      if ((stat & SIM_STAT_TXPAR) || ((p->conf1 & SIM_CONF1_CHKPAR) == 0))  //parity disable
+      {
+         if (p->xOut != (p->xIn - 1))       //if only one char transmitted (already transmitted)
+         {                                  //just need to have confirmation of reception
+             if (p->xOut == (p->xIn - 2))
+             {
+                p->xOut++;
+                p->c->tx = *(p->xOut);         // transmit
+
+                p->conf1 &= ~SIM_CONF1_TXRX;   // return the direction
+                p->c->conf1 = p->conf1;
+             }
+             
+             if (p->xOut < (p->xIn - 2))
+             {
+                p->xOut++;
+                p->c->tx = *(p->xOut);         // transmit
+             }                                 
+         }   
+      }
+      else
+      {
+         p->c->tx = *(p->xOut);            // transmit same char
+         p->txParityErr++;                 // count number of transmit parity errors 
+      }
+
+   }
+
+   // Handle errors
+   if ((it & SIM_IT_ITOV) && !(p->c->maskit & SIM_MASK_OV))
+   {
+      p->errorSIM = SIM_ERR_OVF;
+      
+   }
+   if ((it & SIM_IT_WT) && !(p->c->maskit & SIM_MASK_WT))
+   {
+      p->errorSIM = SIM_ERR_READ;
+   }
+
+   // Reset the card in case of NATR to let the program continue
+   if ((it & SIM_IT_NATR) && !(p->c->maskit & SIM_MASK_NATR))
+   {
+      p->c->cmd = SIM_CMD_STOP;
+      p->errorSIM = SIM_ERR_NATR;
+   }
+
+#if ((CHIPSET == 2) || (CHIPSET == 3))
+   // SIM card insertion / extraction
+   if ((it & SIM_IT_CD) && !(p->c->maskit & SIM_MASK_CD))
+   {
+      stat = p->c->stat;
+      if ((stat & SIM_STAT_CD) != SIM_STAT_CD)
+      {
+        (p->RemoveFunc)();
+        p->errorSIM = SIM_ERR_NOCARD;
+      }
+   }
+#endif
+}
+
+#if ((CHIPSET == 4) || (CHIPSET == 5) || (CHIPSET == 6) || (CHIPSET == 7) || (CHIPSET == 8) || (CHIPSET == 9) || (CHIPSET == 10) || (CHIPSET == 11) || (CHIPSET == 12))
+  /*
+   * SIM_CD_IntHandler
+   *
+   * Read cause of SIM interrupt : 
+   * 
+   */
+  void SIM_CD_IntHandler(void)
+  {
+    volatile unsigned short it_cd, stat;
+    SIM_PORT *p;
+
+    p = &(Sim[0]);
+
+    p->rxParityErr = 0;   
+    it_cd = p->c->it_cd;
+
+    // SIM card insertion / extraction
+    if ((it_cd & SIM_IT_CD) && !(p->c->maskit & SIM_MASK_CD))
+    {
+      stat = p->c->stat;
+      if ((stat & SIM_STAT_CD) != SIM_STAT_CD)
+      {
+        (p->RemoveFunc)();
+        p->errorSIM = SIM_ERR_NOCARD;
+      }
+    }
+}
+#endif
+
+
+// to force this module to be linked
+SYS_UWORD16 SIM_Dummy(void)
+{
+   
+}