Revision 8:aa64e731174a, committed 2022-04-01

Comitter:

jlsalvat

Date:

Fri Apr 01 17:35:58 2022 +0000

Parent:

7:be466464a18c

Commit message:

change for frdm-kl25Z

Changed in this revision

--- a/portserial.cpp	Fri Oct 06 02:54:27 2017 +0000
+++ b/portserial.cpp	Fri Apr 01 17:35:58 2022 +0000
@@ -29,6 +29,8 @@
 #include "mb.h"
 #include "mbport.h"
 
+#define INPUT 0
+#define OUTPUT 1
 
 /* ----------------------- static functions ---------------------------------*/
 static void prvvUARTTxReadyISR( void );
@@ -57,10 +59,13 @@
     #elif defined(TARGET_NUMAKER_PFM_M487)  // for M478 board
     Serial pc(PC_12, PC_11);
     #else
-        #error "The demo code can't be executed on this board."    
+    static UnbufferedSerial modbus_serial(D14, D15);    
+    DigitalOut modbus_dir(PTD6);
+
     #endif
 #endif
 
+int us_time_to_send_bit;
 static volatile BOOL RxEnable, TxEnable;     // Cam - keep a static copy of the RxEnable and TxEnable
                                     // status for the simulated ISR (ticker)
 
@@ -72,11 +77,11 @@
 prvvUARTISR( void )
 {
     if ( TxEnable )
-        if(pc.writeable())
+        if(modbus_serial.writeable())
             prvvUARTTxReadyISR();
 
     if ( RxEnable )
-        if(pc.readable())
+        if(modbus_serial.readable())
             prvvUARTRxISR();
 }
 
@@ -96,7 +101,10 @@
 BOOL
 xMBPortSerialInit( UCHAR ucPORT, ULONG ulBaudRate, UCHAR ucDataBits, eMBParity eParity )
 {
-    pc.baud(ulBaudRate);
+    modbus_dir=INPUT;
+    modbus_serial.baud(ulBaudRate);
+    modbus_serial.format(8,(SerialBase::Parity) eParity,1);
+    us_time_to_send_bit=1000000/(ulBaudRate);
 #if defined(DEF_RS485_PORT) // mbed serial port
     #if defined(TARGET_NUMAKER_PFM_NUC472)      // for NUC472 board
     pc.set_rs485_mode(PF_11);
@@ -118,8 +126,11 @@
     /* Put a byte in the UARTs transmit buffer. This function is called
      * by the protocol stack if pxMBFrameCBTransmitterEmpty( ) has been
      * called. */
-    //printf("[%02x]", ucByte );
-    pc.putc( ucByte);
+    printf("[%02x]", ucByte );
+    modbus_dir=OUTPUT;
+    modbus_serial.write( &ucByte,1);
+    wait_us(us_time_to_send_bit*11);//maximum 11 bits to send
+    modbus_dir=INPUT;
     return TRUE;
 }
 
@@ -129,8 +140,9 @@
     /* Return the byte in the UARTs receive buffer. This function is called
      * by the protocol stack after pxMBFrameCBByteReceived( ) has been called.
      */
-    *pucByte = pc.getc();
-    //printf("<%02x>", *pucByte );
+     modbus_dir=INPUT;
+    modbus_serial.read(pucByte,1);
+    printf("<%02x>", *pucByte );
     return TRUE;
 }