Revision 2:4e64923032ad, committed 2021-07-14

Comitter:

okano

Date:

Wed Jul 14 03:00:18 2021 +0000

Parent:

1:b44f801ac9f2

Child:

3:47f1f22747cc

Commit message:

buffer write/read splitted

Changed in this revision

--- a/SC18IS606.cpp	Tue Jul 13 10:45:46 2021 +0000
+++ b/SC18IS606.cpp	Wed Jul 14 03:00:18 2021 +0000
@@ -35,24 +35,27 @@
     return 0;   //  dummy
 }
 
-
-int SC18IS606::transfer( char *send_data_ptr, char *receive_data_ptr, int length )
+int SC18IS606::transfer( int slave_select_num, char *send_data_ptr, int length )
 {
     char    *p;
     p   = new char[ length + 1 ];
     
-    *p  = SPI_read_and_write;
+    *p  = SPI_read_and_write | (0x1 << slave_select_num);
     memcpy( p + 1, send_data_ptr, length );
     i2c.write( device_address, p, length + 1 );
     delete[]    p;
-    
+
+    return 0;   //  dummy
+}
+
+int SC18IS606::read_buffer( char *receive_data_ptr, int length )
+{
     if ( receive_data_ptr )
         i2c.read( device_address, receive_data_ptr, length );
     
     return 0;   //  dummy
 }
 
-
 int SC18IS606::config( FunctionID fid, char data )
 {
     char    s[ 2 ];
@@ -70,3 +73,12 @@
 
     return 0;   //  dummy
 }
+
+#if 0
+void SC18IS606::wait_transfer_done( void )
+{
+    char    func_id = 0x01;
+    while ( i2c.write( device_address, &func_id, 1 ) )
+        ;
+}
+#endif

--- a/SC18IS606.h	Tue Jul 13 10:45:46 2021 +0000
+++ b/SC18IS606.h	Wed Jul 14 03:00:18 2021 +0000
@@ -58,14 +58,28 @@
      */
     ~SC18IS606();
 
-    /** Transfer (send and receive) data
+    /** Transfer (send data)
+     *
+     *  @param slave_select_num SPI slave select number (0 ~ 2)
+     *  @param send_ptr         Send_data_ptr
+     *  @param length           Length of data array
+     *  @return                 dummy
+     */
+    int transfer( int slave_select_num, char *send_data_ptr, int length );
+
+    /** Read buffer (reading out received data from buffer)
      *
-     *  @param send_ptr     Send_data_ptr
-     *  @param receive_ptr  Receive_data_ptr
-     *  @param length       Length of data array
-     *  @return             dummy
+     *  @param receive_ptr      Receive_data_ptr
+     *  @param length           Length of data array
+     *  @return                 dummy
      */
-    int transfer( char *send_data_ptr, char *receive_data_ptr, int length );
+    int read_buffer( char *receive_data_ptr, int length );
+
+#if 0
+    /** Wait transfer done (using polling method)
+     */
+    void wait_transfer_done( void );
+#endif
 
     /** Set congiguration
      *