Diff: i2c.h

Revision:

0:2a01c5a56ed1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/i2c.h	Mon Jul 09 09:12:38 2018 +0000
@@ -0,0 +1,96 @@
+#ifndef _I2C_H_
+#define _I2C_H_
+/*
+    ****************************************************************************
+    ****************************************************************************
+    ** DEVINT BİLİŞİM YAZILIM DONANIM TİC. LTD. ŞTİ. TARAFINDAN GELİŞTİRİLMİŞTİR
+    ** İzmir / TÜRKİYE
+    **
+    ** (C) 2015
+    ****************************************************************************
+    ****************************************************************************
+    *************************************************************** K A M B O ** 
+*/
+
+// FONKSIYON PROTOTİPLERİ
+void eeprom_write(uint8_t eepromtype, uint16_t memory_address, uint8_t value);
+//******************************************************************************
+
+uint8_t eeprom_read(uint8_t eepromtype, uint16_t memory_address);
+//******************************************************************************
+
+bool io_send(uint8_t first_byte, uint8_t second_byte);
+//******************************************************************************
+
+//
+void eeprom_write(uint8_t eepromtype, uint16_t memory_address, uint8_t val)
+{
+    if (eepromtype == 1) {                          // 1 bayt adresleme
+    
+        fnode.edata2[0] = memory_address;
+        fnode.edata2[1] = val;
+        i2c.write(EEPROM_ADDRESS, fnode.edata2, 2, false);
+        wait_ms(10);
+
+    } else {                                        // 2 bayt adresleme
+    
+        fnode.edata3[0] = memory_address >> 8;
+        fnode.edata3[1] = memory_address & 0xFF;
+        fnode.edata3[2] = val;
+        i2c.write(EEPROM_ADDRESS, fnode.edata3, 3, false);
+        wait_ms(10);
+        
+    }
+}
+
+//
+uint8_t eeprom_read(uint8_t eepromtype, uint16_t memory_address)
+{
+    if (eepromtype == 1) {                          // 1 bayt adresleme
+    
+        fnode.edata = memory_address;
+        i2c.write(EEPROM_ADDRESS, &fnode.edata, 1, true);
+        wait_ms(5);
+        i2c.read(EEPROM_ADDRESS, &fnode.value, 1, false);
+        wait_ms(10);
+        
+        return (uint8_t)fnode.value;
+
+    } else {                                        // 2 bayt adresleme
+    
+        fnode.edata2[0] = memory_address >> 8;
+        fnode.edata2[1] = memory_address & 0xFF;
+        i2c.write(EEPROM_ADDRESS, fnode.edata2, 2, true);
+        wait_ms(5);
+        i2c.read(EEPROM_ADDRESS, &fnode.value, 1, false);
+        wait_ms(10);
+
+        return (uint8_t)fnode.value;
+        
+    }
+}
+
+//
+//
+bool io_send(uint8_t first_byte, uint8_t second_byte)
+{
+    bool _success = false;
+
+    fnode.iodata[0] = first_byte;
+    fnode.iodata[1] = second_byte;
+
+    // Try max. 3 times
+    for (uint8_t i = 0; i < 3; i++) {
+
+        if (i2c.write(IO_EXPANDER_ADDRESS, fnode.iodata, 2) == 0) {
+            _success = true;
+        }
+
+        if (_success == true) {
+            break;
+        }
+    }
+
+    return _success;
+}
+#endif
\ No newline at end of file