Changeset 34c57e8 in avrstuff for EPRoxygen/at29c040.h

Timestamp:

Jul 7, 2012, 6:19:53 PM (12 years ago)

Author:

Adrien Destugues <pulkomandy@…>

Branches:

main

Children:

a6ae6ac

Parents:

d09030d

Message:

More work.

• Power on/off sequence OK
• Code to read chip ID written, but not working yet...

git-svn-id: ​svn://pulkomandy.tk/avrstuff@59 c6672c3c-f6b6-47f9-9001-1fd6b12fecbe

File:

• EPRoxygen/at29c040.h (modified) (1 diff)

EPRoxygen/at29c040.h

@@ -4 +4 @@
 {
         public:
+                AT29C040();
+
+                void power(void);
+                void shutdown(void);
                 void read(const char* filename);
                 void write(const char* filename);
                 void erase(void);
+        private:
+                bool checkId(void);
+
+                // Write a byte to a 16-bit address (bits 16 17 18 are 0)
+                inline void wr16(uint16_t addr, uint8_t val)
+                {
+                        Device::write(ADR0, addr);
+                        Device::write(ADR1, addr >> 8);
+
+                        Device::write(CTRL, OE | CTRLmask); 
+
+                        Device::write(DATA, val);
+
+                        Device::write(CTRL, WE | OE | CTRLmask);
+                }
+
+                static const uint8_t CTRLmask = 0b01100000;
+                static const uint8_t VOLTmask = 0b10110011;
 };