Revision 3:b6bb8d236251, committed 2018-03-28

Comitter:

Arkadi

Date:

Wed Mar 28 13:17:02 2018 +0000

Parent:

2:f72110475fec

Commit message:

Modified for page read, n bytes read

Changed in this revision

diff -r f72110475fec -r b6bb8d236251 SPI_MX25R.cpp
--- a/SPI_MX25R.cpp	Thu Jul 23 17:11:27 2015 +0000
+++ b/SPI_MX25R.cpp	Wed Mar 28 13:17:02 2018 +0000
@@ -303,3 +303,17 @@
     return( data ) ;
 }
 
+
+void SPI_MX25R::readNBytes(int addr, uint8_t *data, int nBytes) // read sequential n bytes
+{
+    int i;   
+    m_cs = CS_LOW ;
+    m_spi.write(CMD_READ) ;                         // send 03h
+    m_spi.write((addr >> 16)&0xFF) ;
+    m_spi.write((addr >>  8)&0xFF) ;
+    m_spi.write(addr & 0xFF) ;
+    for (i = 0 ; i < nBytes ; i++ ) {              // data: sequential data bytes
+        data[i] = m_spi.write(DUMMY) ;
+    } 
+    m_cs = CS_HIGH ;                               
+}
\ No newline at end of file

diff -r f72110475fec -r b6bb8d236251 SPI_MX25R.h
--- a/SPI_MX25R.h	Thu Jul 23 17:11:27 2015 +0000
+++ b/SPI_MX25R.h	Wed Mar 28 13:17:02 2018 +0000
@@ -3,6 +3,10 @@
  
 #include "mbed.h"
  
+ /**
+ Page Defines, write read based on page size
+ */
+ #define MX25R_PAGES 0x7FFF // total memory size - Addresses 0x7FFFFF
 /**
  * Macronix Serial Flash Low Power Memories
  * SPI_MX25R Series SPI-Flash Memory
@@ -178,6 +182,8 @@
   uint8_t readFREAD(int addr) ; 
   uint8_t read8(int addr) ;
   void write8(int addr, uint8_t data) ;
+  // read sequential n bytes
+  void readNBytes(int addr, uint8_t *data, int nBytes);
   private:
  
 } ;